|
October 2006 543 Pages US$ 2,200 (electronic)
Summary The aim of personalized medicine or individualized treatment is to match the right drug to the right patient and, in some cases, even to design the appropriate treatment for a patient according to his/her genotype. This report describes the latest concepts of development of personalized medicine based on pharmacogenomics, pharmacogenetics,pharmacoproteomics, and metabolomics. Basic technologies of molecular diagnostics play an important role, particularly those for single nucleotide polymorphism (SNP) genotyping. Diagnosis is integrated with therapy for selection of the treatment as well for monitoring the results. Biochip/microarray technologies are also important and finally bioinformatics is needed to analyze the immense amount of data generated by various technologies.
Pharmacogenetics, the study of influence of genetic factors on drug action and metabolism, is used for predicting adverse reactions of drugs. Several enzymes are involved in drug metabolism of which the most important ones are those belonging to the family of cytochrome P450. The knowledge of the effects of polymorphisms of genes for the enzymes is applied in drug discovery and development as well as in clinical use of drugs. Cost-effective methods for genotyping are being developed and it would be desirable to include this information in the patient's record for the guidance of the physician to individualize the treatment. Pharmacogenomics, a term that overlaps with pharmacogenetics but is distinct, deals with the application of genomics to drug discovery and development. It involves the mechanism of action of drugs on cells as revealed by gene expression patterns. Pharmacoproteomics is an important contribution to personalized medicine as it is a more functional representation of patient-to-patient variation than that provided by genotyping.A 'pharmacometabonomic' approach to personalizing drug treatment is also described.
Biological therapies such as those which use patient's own cells are considered to be personalized medicines. Vaccines are prepared from individual patient's tumor cells. Individualized therapeutic strategies using monoclonal bodies can be directed at specific genetic and immunologic targets. Ex vivo gene therapy involves the genetic modification of the patient's cells in vitro, prior to reimplantation of these cells in the patient's body.
Various technologies are integrated to develop personalized therapies for specific therapeutic areas described in the report. Examples of this are genotyping for drug resistance in HIV infection, personalized therapy of cancer, antipsychotics for schizophrenia, antidepressant therapy, antihypertensive therapy and personalized approach to neurological disorders. Although genotyping is not yet a part of clinically accepted routine, it is expected to have this status by the year 2010.
Several players are involved in the development of personalized therapy. Pharmaceutical and biotechnology companies have taken a leading role in this venture in keeping with their future role as healthcare enterprises rather than mere developers of technologies and manufacturers of medicines.
Ethical issues are involved in the development of personalized medicine mainly in the area of genetic testing. These along with social issues and consideration of race in the development of personalized medicine are discussed. Regulatory issues are discussed mainly with reference to the FDA guidelines on pharmacogenomics.
Increase in efficacy and safety of treatment by individualizing it has benefits in financial terms. Information is presented to show that personalized medicine will be cost-effective in healthcare systems. For the pharmaceutical companies, segmentation of the market may not leave room for conventional blockbusters but smaller and exclusive markets for personalized medicines would be profitable. Marketing opportunities for such a system are described with market estimates from 2005-2015.
Profiles of 195 companies involved in developing technologies for personalized medicines, along with 376 collaborations are included in the part II of the report. Finally the bibliography contains over 400 selected publications cited in the report.The report is supplemented by 53 tables and 15 figures.
T A B L E O F C O N T E N T S 0. Executive Summary .............................................................................. 15 1. Basic Aspects........................................................................................ 17 Definition of personalized medicine ................................................................................17 Historical evolution of medical concepts .........................................................................18 Basics technologies for developing personalized medicine ..............................................20 Conventional medicine versus personalized medicine ......................................................22 Sequencing of the human genome..................................................................................22 Role of variations in human genome ................................................................................ 22 Single nucleotide polymorphisms .................................................................................... 22 Insertions and deletions in the human genome ................................................................. 23 Large scale variation in human genome ........................................................................... 23 Mass analysis of DNA from whole populations ................................................................... 24 Role of genetics in future approaches to healthcare ........................................................24 Genetic medicine ......................................................................................................... 24 Human disease and genes ............................................................................................. 25 Role of genetics in development of personalized medicines .................................................. 25 Genetic databases................................................................................................... 25 Genetic epidemiology............................................................................................... 26 Limitations of medical genetics and future prospects..................................................... 26 Role of systems biology in personalized medicine ...........................................................27 A personalized approach to environmental factors in disease ..........................................27 Reclassification of diseases............................................................................................28 2. Molecular Diagnostics in Personalized Medicine ................................... 29 Introduction..................................................................................................................29 Molecular diagnostic technologies ..................................................................................29 Direct dideoxy DNA sequencing (DDS) ............................................................................. 30 Single-stranded conformation polymorphism (SSCP) analysis .............................................. 30 Heteroduplex analysis (HA) ........................................................................................... 30 The WAVE System ....................................................................................................... 31 DirectLinear™ Analysis .................................................................................................. 31 Denaturing high-performance liquid chromatography (DHPLC) ............................................. 31 Denaturing Gradient Gel electrophoresis (DGGE) ............................................................... 31 Chemical cleavage mismatch (CCM) ................................................................................ 32 Multiplex Allele-Specific Diagnostic Assay ......................................................................... 32 Representational oligonucleotide microarray analysis.......................................................... 32 Cleavase Fragment Length Polymorphism (CFLP)............................................................... 32 Restriction fragment length polymorphism (RFLP).............................................................. 32 Arrayed primer extension (APEX) .................................................................................... 33 Enzymatic Mutation Detection (EMD) ............................................................................... 33 T cells and molecular diagnosis ...................................................................................... 33 The chorioallantoic membrane assay ............................................................................... 34 Sequencing................................................................................................................. 34 Multiplex DNA sequencing......................................................................................... 34 Sequencing in microfabricated high-density picoliter reactors.......................................... 35 Whole genome sequencing ............................................................................................ 35 Biochips and microarrays ...............................................................................................35 Application of biochip technology in developing personalized medicine................................... 35 Standardizing the microarrays........................................................................................ 37 Biochip technologies ..................................................................................................... 37 GeneChip............................................................................................................... 37 AmpliChip CYP450 ................................................................................................... 37 Microfluidics................................................................................................................ 39 Lab-on-a-chip......................................................................................................... 40 Micronics' microfluidic technology............................................................................... 40 LabCD................................................................................................................... 40 Microfluidic automated DNA analysis using PCR ............................................................ 40 Integrated microfluidic bioassay chip .......................................................................... 41 Electronic detection of nucleic acids on microarrays ........................................................... 41 Strand displacement amplification on a biochip ................................................................. 41 Rolling circle amplification on DNA microarrays ................................................................. 42 Universal DNA microarray combining PCR and ligase detection reaction ................................. 42 Protein biochips ........................................................................................................... 42 ProteinChip ............................................................................................................ 43 LabChip for protein analysis ...................................................................................... 43 TRINECTIN proteome chip ........................................................................................ 44 - 4 - Protein expression microarrays.................................................................................. 44 Microfluidic devices for proteomics-based diagnostics .................................................... 45 New developments in protein chips ............................................................................ 45 Protein chips for personalized medicine ....................................................................... 46 SNP genotyping .............................................................................................................46 Haplotyping ................................................................................................................ 47 Haplotype Specific Extraction .................................................................................... 47 HapMap project ...................................................................................................... 48 Predictingdrug response with HapMap ......................................................................... 49 Companies developing haplotyping technology ............................................................. 49 Technologies for SNP analysis ........................................................................................ 49 Biochip and microarray-based detection of SNPs................................................................ 50 SNP genotyping by MassARRAY ................................................................................. 50 Biochip combining BeadArray and ZipCode technologies ................................................. 51 SNP-IT primer-extension technology........................................................................... 51 OmniScan SNP genotyping........................................................................................ 52 Affymetrix Variation Detection Arrays ......................................................................... 52 Use of NanoChip for detection of SNPs ........................................................................ 52 DNA sequencing .......................................................................................................... 52 Electrochemical DNA probes .......................................................................................... 53 Single base extension-tag array ..................................................................................... 53 Laboratory Multiple Analyte Profile .................................................................................. 53 PCR-CTPP (confronting two-pair primers) ......................................................................... 54 SNP genotyping on a genome-wide amplified DOP-PCR template.......................................... 54 TaqMan real-time PCR .................................................................................................. 54 Non-Enzymatic Amplification Technology.......................................................................... 55 SNP genotyping with gold nanoparticle probes .................................................................. 55 Locked nucleic acid ...................................................................................................... 55 Molecular inversion probe based assays ........................................................................... 56 Pyrosequencing ........................................................................................................... 56 Reversed enzyme activity DNA interrogation test............................................................... 57 Zinc finger proteins ...................................................................................................... 57 UCAN method (Takara Biomedical).................................................................................. 57 Mitochondrial SNPs....................................................................................................... 58 Limitations of SNP in genetic testing................................................................................ 58 Concluding remarks on SNP genotyping ........................................................................... 58 Companies involved in developing technologies/products for SNP analysis ............................. 59 Impact of SNPs on personalized medicine......................................................................... 60 Optical Mapping.............................................................................................................61 Role of nanobiotechnology in molecular diagnostics........................................................61 Role of biomarkers in personalized medicine ..................................................................62 Biomarkers for diagnostics............................................................................................. 62 Biomarkers for drug development ................................................................................... 63 Application of proteomics in molecular diagnosis ............................................................63 Proteomic strategies for biomarker identification ............................................................... 63 Proteomic technologies for detection of biomarkers in body fluids .................................... 64 Protein patterns........................................................................................................... 64 Layered Gene Scanning ................................................................................................ 64 Comparison of proteomic and genomic approaches in personalized medicine .......................... 65 Gene expression profiling ..............................................................................................66 DNA microarrays ......................................................................................................... 66 Analysis of single-cell gene expression............................................................................. 67 Gene expression profiling based on alternative RNA splicing ................................................ 67 Whole genome expression array ..................................................................................... 68 Tangerine™ expression profiling ..................................................................................... 69 Gene expression analysis on biopsy samples..................................................................... 69 Serial analysis of gene expression (SAGE) ........................................................................ 69 Multiplexed Molecular Profiling........................................................................................ 70 Gene expression analysis using competitive PCR and MALDI TOF MS..................................... 70 Monitoring in vivo gene expression by magnetic resonance imaging ...................................... 71 Companies involved in gene expression analysis ................................................................ 71 Monitoring in vivo gene expression by molecular imaging ...............................................72 Molecular imaging and personalized medicine ................................................................72 Glycomics-based diagnostics..........................................................................................72 Combination of diagnostics and therapeutics ..................................................................73 Companies combining diagnostics and therapeutics............................................................ 73 Point-of-care diagnosis ..................................................................................................74 Companies developing point-of-care diagnostic technologies................................................ 75 Point-of-care diagnosis of infections ................................................................................ 77 Advantages versus disadvantages of point-of-care diagnosis ............................................... 77 Future prospects of point-of-care diagnosis ...................................................................... 78 Role of diagnostics in integrated healthcare ...................................................................78 Concept of integrated healthcare .................................................................................... 78 Components of integrated healthcare .............................................................................. 79 Screening .............................................................................................................. 79 Disease prediction ................................................................................................... 79 Early diagnosis ....................................................................................................... 79 Prevention ............................................................................................................. 79 Therapy based on molecular diagnosis ........................................................................ 79 Monitoring of therapy............................................................................................... 80 Advantages and limitations of integrated healthcare........................................................... 80 Commercially available systems for integrated healthcare ................................................... 80 Future of molecular diagnostics in personalized medicine ...............................................82 3. Pharmacogenetics ................................................................................ 83 Basics of pharmacogenetics ...........................................................................................83 Role of molecular diagnostics in pharmacogenetics.........................................................84 Role of pharmacogenetics in pharmaceutical industry .....................................................84 Study of the drug metabolism and pharmacological effects.................................................. 85 Causes of variations in drug metabolism .......................................................................... 85 Enzymes relevant to drug metabolism ............................................................................. 85 Pharmacogenetics of phase I metabolism......................................................................... 86 CYP450 ................................................................................................................. 86 P450 CYP 2D6 inhibition by selective serotonin reuptake inhibitors................................... 88 Lansoprazole and cytochrome P450 ............................................................................ 88 Glucose-6-phosphate dehydrogenase.......................................................................... 89 Pharmacogenetics of phase II metabolism........................................................................ 89 N-Acetyltransferase................................................................................................. 89 Uridine diphosphate-glucuronosyltransferase ............................................................... 90 Measurement of CYP isoforms ........................................................................................ 90 Polymorphism of drug transporters ................................................................................. 91 Genetic variation in drug targets..................................................................................... 91 Polymorphisms of kinase genes ................................................................................. 92 Effect of genetic polymorphisms on disease response to drugs ............................................. 92 Ethnic differences in drug metabolism ............................................................................. 93 Gender differences in pharmacogenetics .......................................................................... 93 Role of pharmacogenetics in drug safety.......................................................................... 94 Adverse drug reactions ............................................................................................ 94 Malignant hyperthermia ........................................................................................... 95 Therapeutic drug monitoring, phenotyping, and genotyping................................................. 96 Therapeutic drug monitoring ..................................................................................... 96 Phenotyping........................................................................................................... 96 Genotyping ............................................................................................................ 97 Genotyping vs phenotyping....................................................................................... 98 Phenomics.................................................................................................................. 98 Limitations of genotype-phenotype association studies .................................................. 99 Molecular toxicology in relation to personalized medicines ................................................... 99 Toxicogenomics ...................................................................................................... 99 Companies involved in molecular toxicology................................................................100 Gene expression studies ..........................................................................................101 Transcriptome profiling studies .................................................................................101 Genomics and the prediction of xenobiotic toxicity .......................................................101 Pharmacogenetics in clinical trials ..................................................................................102 Postmarketing pharmacogenetics...................................................................................102 Clinical implications of pharmacogenetics..................................................................... 103 Examples of use of pharmacogenetics in clinical pharmacology ...........................................103 Linking pharmacogenetics with pharmacovigilance............................................................104 Recommendations for the clinical use of pharmacogenetics ................................................105 Limitations of pharmacogenetics .................................................................................. 105 Academic research in pharmacogenetics ...................................................................... 106 Future role of pharmacogenetics in personalized medicine ............................................ 106 4. Pharmacogenomics............................................................................. 107 Introduction................................................................................................................ 107 Basics of pharmacogenomics ....................................................................................... 107 Pharmacogenomics and drug discovery ........................................................................ 107 Preclinical prediction of drug efficacy.........................................................................109 Pharmacogenomics and clinical trials ........................................................................... 109 Impact of genetic profiling on clinical studies ...................................................................111 Limitations of the pharmacogenomic -based clinical trials ....................................................112 Pharmacogenomic aspects of major therapeutic areas .................................................. 112 Oncogenomics............................................................................................................112 Oncogenes............................................................................................................113 Tumor suppressor genes .........................................................................................113 Cardiogenomics..........................................................................................................114 Neuropharmacogenomics .............................................................................................116 Pharmacogenomics of Alzheimer's disease ..................................................................117 Pharmacogenomics of depression..............................................................................117 Pharmacogenomics of schizophrenia ..........................................................................118 Companies involved in neurogenomics-based drug discovery .........................................118 5. Role of Pharmacoproteomics .............................................................. 121 Basics of proteomics .................................................................................................... 121 Proteomic approaches to the study of pathophysiology of diseases ............................... 121 Single cell proteomics for personalized medicine...............................................................122 Diseases due to misfolding of proteins ............................................................................122 Therapies for protein misfolding................................................................................123 Significance of mitochondrial proteome in human disease ..................................................124 Proteomic technologies for drug discovery and development......................................... 124 Role of proteomics in clinical drug safety.........................................................................124 Toxicoproteomics........................................................................................................124 Application of pharmacoproteomics in personalized medicine ....................................... 126 6. Role of Metabolomics in Personalized Medicine .................................. 127 Metabolomics and metabonomics ................................................................................. 127 Metabolomics bridges the gap between genotype and phenotype .................................. 127 Metabolomics, biomarkers and personalized medicine .................................................. 127 Metabolomic technologies ............................................................................................ 128 Urinary profiling by capillary electrophoresis ....................................................................129 Lipid profiling .............................................................................................................129 Role of metabolomics in biomarker identification and pattern recognition ..............................129 Validation of biomarkers in large-scale human metabolomics studies ...................................130 Pharmacometabonomics .............................................................................................. 130 Metabonomic technologies for toxicology studies.......................................................... 131 Metabonomics/metabolomics a nd personalized nutrition .............................................. 131 7. Personalized Biological Therapies....................................................... 133 Introduction................................................................................................................ 133 Recombinant human proteins ....................................................................................... 133 Therapeutic monoclonal antibodies .............................................................................. 133 Cell therapy ................................................................................................................. 134 Autologous tissue and cell transplants ............................................................................134 Stem cells .................................................................................................................134 Role of stem cells derived from unfertilized embryos ....................................................134 Cloning and personalized cell therapy .............................................................................135 Use of stem cells for drug testing...................................................................................135 Gene therapy ............................................................................................................... 135 Personalized cancer vaccines ....................................................................................... 136 Patient-specific cancer vaccines.....................................................................................136 Personalized cancer vaccines....................................................................................136 Antigen-specific vaccines..............................................................................................136 Autologous cell vaccines...............................................................................................137 Individual cancers are antigenically distinct .....................................................................137 Autologous HSP70-peptide vaccine............................................................................138 Personalized melanoma vaccines ...................................................................................138 Antisense therapy ........................................................................................................ 138 RNA interference ........................................................................................................139 8. Personalized Medicine in Major Therapeutic Areas ............................. 141 Introduction................................................................................................................ 141 Management of viral infections .................................................................................... 142 Management of HIV .....................................................................................................142 Differences in response of the body to HIV .................................................................142 Variations in action of drugs on HIV ...........................................................................142 Role of diagnostic testing in HIV ...............................................................................142 Drug-resistance in HIV ............................................................................................143 Measurement of Replication Capacity.........................................................................144 Prevention of adverse reactions to antiviral drugs ........................................................144 Treatment of hepatitis B...............................................................................................144 Treatment of hepatitis C...............................................................................................145 Psychiatric disorders ................................................................................................... 145 Psychopharmacogenetics..............................................................................................145 COMT genotype and response to amphetamine ...........................................................146 Genotype and response to methylphenidate in children with ADHD .................................146 Personalized antipsychotic therapy.................................................................................146 Personalized antidepressant therapy ..............................................................................148 Pretreatment EEG to predict adverse effects to antidepressants......................................149 Individualization of SSRI treatment ...........................................................................149 Neurological disorders ................................................................................................. 150 Personalized management of Alzheimer's disease .............................................................151 Personalized management of Parkinson's disease .............................................................152 Discovery of subgroup-selective drug targets in PD ......................................................152 Personalized management of Epilepsy ............................................................................153 Choice of the right AED...........................................................................................153 Pharmacogenomics of epilepsy .................................................................................153 Drug resistance in epilepsy ......................................................................................154 Future prospects for epilepsy ...................................................................................155 Personalized management of migraine ............................................................................155 Personalized treatment of multiple sclerosis .....................................................................156 Future prospects for multiple sclerosis .......................................................................157 Cardiovascular disorders .............................................................................................. 157 Role of diagnostics in personalized management of cardiovascular disease ............................157 Testing in coronary heart disease..............................................................................157 Cardiovascular disorders with a genetic component ......................................................158 Gene variant as a risk factor for sudden cardiac death..................................................159 Pharmacogenomics of cardiovascular disorders ................................................................160 Modifying the genetic risk for myocardial infarction ...........................................................160 Management of heart failure .........................................................................................161 Management of hypertension ........................................................................................162 Pharmacogenomics of diuretic drugs..........................................................................162 Pharmacogenomics of ACE inhibitors .........................................................................163 Management of hypertension by personalized approach ................................................163 Pharmacogenetics of lipid-lowering therapies ...................................................................164 Polymorphisms in genes involved in cholesterol metabolism ..........................................164 Role of eNOS gene polymorphisms ............................................................................165 The STRENGTH study.............................................................................................165 Personalized management of women with hyperlipidemia ..............................................166 Thrombotic disorders ...................................................................................................167 Factor V Leiden mutation.........................................................................................167 Anticoagulant therapy.............................................................................................167 Nanotechnology-based personalized therapy of cardiovascular diseases................................168 Concluding remarks .....................................................................................................168 Personalized management of skin disorders ................................................................. 169 Personalized therapy of rheumatoid arthritis ................................................................ 169 DIATSTAT™ anti-cyclic citrullinated peptides in rheumatoid arthritis.....................................170 Personalization of COX-2 inhibitor therapy.......................................................................170 Personalized therapy of asthma ................................................................................... 170 Genetic polymorphism and response to b2-adrenergic agonists............................................171 Genotyping in asthma ..................................................................................................171 Personalized approaches in immunology ...................................................................... 172 Role of Mannose-binding lectin in personalized medicine ....................................................172 Pharmacogenetics and pharmacogenomics of immunosuppressive agents .............................173 Personalized immunosuppressant therapy in organ transplants ...........................................173 Personalized management of pain................................................................................ 174 Pharmacogenetics/pharmacogenomics of pain..................................................................174 Mechanism-specific management of pain.........................................................................175 Preoperative testing to tailor postoperative analgesic requirements......................................175 Personalized analgesics................................................................................................175 Management of genetic disorders ................................................................................. 176 Personalized treatment of cystic fibrosis ..........................................................................176 Personalized management of gastrointestinal disorders ................................................ 176 Personalized therapy of inflammatory bowel disease .........................................................176 Personalized management of lactose intolerance ..............................................................177 Miscellaneous applications ........................................................................................... 177 Genetic polymorphism and management of alcoholism ......................................................177 Personalized therapy for smoking cessation .....................................................................178 Antidepressant therapy for smoking cessation .............................................................178 Effectiveness of nicotine patches in relation to genotype ...............................................178 Hormone replacement therapy in women ........................................................................178 Personalized treatment of malaria ..................................................................................179 Personalized management of renal disease ......................................................................179 Personalization of organ transplantation..........................................................................180 Personalization of kidney transplantation ....................................................................180 Personalization of cardiac transplantation ...................................................................181 Role of immunological biomarkers in monitoring grafted patients....................................181 Personalized care of trauma patients..............................................................................181 Personalized anticoagulation .........................................................................................182 Personalized preventive medicine ................................................................................ 182 Personalized nutrition.................................................................................................. 183 Nutrigenomics............................................................................................................183 Nutrigenomic s and personalized medicine...................................................................184 Personalized diet prescription ........................................................................................184 9. Personalized Therapy of Cancer.......................................................... 187 Challenges of cancer classification..................................................................................187 Impact of molecular diagnostics on the management of cancer...........................................187 Cancer classification using microarrays ......................................................................188 Detection of loss of heterozygosity............................................................................189 Analysis of RNA splicing events in cancer....................................................................189 Analysis of chromosomal alterations in cancer cells ......................................................190 eTag assay system for cancer biomarkers...................................................................190 Fluorescent in situ hybridization................................................................................190 Gene expression profiling ........................................................................................190 Gene expression profiles predict chromosomal instability in tumors.................................192 Diagnosis of cancer of an unknown primary ................................................................192 Personalized therapies based on oncogenic pathways signatures ....................................192 Modulation of CYP450 activity for cancer therapy.........................................................193 Role of molecular imaging in personalized therapy of cancer..........................................193 Diagnostics for detection of minimal residual disease....................................................194 Cancer prognosis ...................................................................................................195 Predictive biomarkers for cancer...............................................................................195 HER-2/neu oncogene as a biomarker for cancer...........................................................195 Detection of mutations for risk assessment and prevention............................................196 Determination of response to therapy.............................................................................196 Biopsy testing of tumors for chemotherapy sensitivity ..................................................196 Genomic analysis of tumor biopsies to predict response to treatment ..............................197 Mutation detection at molecular level.........................................................................197 Proteomic analysis of tumor biopsies to predict response to treatment.............................198 Real-time apoptosis monitoring ................................................................................198 ChemoFx Assay for predicting anticancer drug response................................................198 Serum nucleosomes as indicators of sensitivity to chemotherapy....................................199 Targeted cancer therapies ............................................................................................199 Targeting glycoproteins on cell surface.......................................................................199 Targeting pathways in cancer...................................................................................200 Functional antibody-based therapies ..............................................................................200 Personalized radiation therapy ......................................................................................201 Molecular diagnostics combined with cancer therapeutics...................................................202 Aptamers for combined diagnosis and therapeutics of cancer.........................................202 Role of nanobiotechnology in personalized management of cancer.......................................203 Design of future cancer therapies ..................................................................................204 Screening for personalized anticancer drugs ...............................................................204 Role of epigenetics in development of personalized cancer therapies ...............................204 Role of oncoproteomics in personalized therapy of caner....................................................205 Cancer tissue proteomics.........................................................................................205 Pharmacogenomic-based chemotherapy .........................................................................206 Whole genome technology to predict drug resistance....................................................206 Anticancer drug selection based on molecular characteristics of tumor.............................206 Testing microsatellite-instability for response to chemotherapy ......................................207 Pharmacogenetics of cancer chemo therapy......................................................................207 CYP 1A2 ...............................................................................................................208 Thiopurine methyltransferase...................................................................................208 Dihydropyrimidine dehydrogenase ............................................................................209 UGT1A1 test as guide to irinotecan therapy ................................................................209 Role of computational models in personalized anticancer therapy ........................................210 Drug resistance in cancer.............................................................................................210 Detection of drug resistance in cancer by metabolic profiling..........................................211 GRP78 as a predictor for chemoresponsiveness of breast cancer.....................................211 Drug resistance in colorectal cancer...........................................................................211 Management of drug resistance in leukemia ................................................................212 Overexpression of multidrug resistance gene ..............................................................212 P53 mutations .......................................................................................................213 A chemogenomic approach to drug resistance.............................................................213 Examples of personalized management of cancer .............................................................213 Personalized management of breast cancer ................................................................213 Personalized management of ovarian cancer...............................................................218 Personalized management of acute leukemias .............................................................219 Personalized management of chronic lymphocytic leukemia ...........................................220 Personalized management of multiple myeloma...........................................................221 Personalized management of myelodysplasia ..............................................................222 Personalized management of malignant melanoma ......................................................222 Personalized management of esophageal cancer..........................................................222 Personalized management of colorectal cancer............................................................223 Personalized management of lung cancer ...................................................................224 Personlized management of prostate cancer ...............................................................226 Personalized management of brain cancer ..................................................................226 Personalized therapy of neuroblastomas.....................................................................229 Future of cancer therapy ..............................................................................................230 Challenges for developing personalized cancer therapies ...............................................230 The Cancer Genome Project.....................................................................................230 Companies involved in developing personalized cancer therapy ...........................................231 10. Development of Personalized Medicine....................................... 233 Introduction................................................................................................................ 233 Non-genomic factors in the development of personalized medicine ............................... 233 Personalized medicine based on circadian rhythms ............................................................233 Cytomics as a basis for personalized medicine..................................................................234 Intestinal microflora ....................................................................................................234 Gut microbiome compared to human genome .............................................................234 Metabolic interactions of the host and the intestinal microflora .......................................235 Role of drug delivery in personalized medicine .................................................................235 Personalized approach to clinical trials ............................................................................235 Use of Bayesian approach in clinical trials ...................................................................235 Individualzing risks and benefits in clinical trials ..........................................................236 Players in the development of personalized medicine .................................................... 236 Personalized Medicine Coalition .....................................................................................237 Role of pharmaceutical industry .....................................................................................238 Production and distribution of personalized medicines ...................................................238 Role of biotechnology companies ...................................................................................239 Role of life sciences industries .......................................................................................239 Role of molecular imaging in personalized medicine ..........................................................240 Molecular imaging for personalized drug development in oncology ..................................240 Molecular imaging and CNS drug development ............................................................242 Companies involved in molecular imaging...................................................................242 Role of the clinical laboratories ......................................................................................243 Role of universities and government support....................................................................243 Roadmap Initiative for Medical Research ....................................................................243 Development of products for personalized medicine at the NIH ......................................244 The National Clinical Genomics Initiative ....................................................................244 Genomic-Based Prospective Medicine Project ..............................................................245 Pharmacogenetics Research Network and Knowledge Base ............................................245 Clinical Proteomics Program .....................................................................................246 Southeast Nebraska Cancer Center's Personalized Medicine Network ...............................246 Role of healthcare organizations and hospitals .................................................................246 Signature Genetics.................................................................................................247 The Mayo Clinic genetic database..............................................................................247 Role of the medical profession .......................................................................................247 Education of the healthcare professionals ...................................................................247 Medical education...................................................................................................248 Role of genetic banking systems and databases............................................................ 248 Role of biobanks in development of personalized medicine .................................................248 UK Biobank................................................................................................................249 Personalized medicine based on PhysioGenomics™ technology............................................250 Role of bioinformatics in development of personalized medicine ................................... 250 Exploration of disease-gene relationship .........................................................................251 Health information management....................................................................................252 Electronic medical records .......................................................................................252 Linking patient medical records and genetic information................................................252 Management of personal genomic data......................................................................253 Personalized prognosis of disease ..................................................................................253 Integration of technologies for development of personalized medicine ..................................253 Global scope of personalized medicine.......................................................................... 254 Personalized medicine in the developed countries .............................................................254 NIH initiatives to determine genetic causes of disease ..................................................254 Personalized medicine in the US ...............................................................................255 Personalized medicine in the EU................................................................................255 UK National Health Service and medical genetics.........................................................256 Personalized medicine in the developing countries ............................................................256 Advantages and limitations of personalized medicine .................................................... 257 Future of personalized medicine ................................................................................... 259 Understanding the genetic basis of diseases ....................................................................259 Personal Genome Project..............................................................................................259 Genome-wide association studies...................................................................................259 Personalized predictive medicine....................................................................................260 Opportunities and challenges ........................................................................................261 Pharmacotyping..........................................................................................................261 Medicine in the year 2010 ............................................................................................261 Concluding remarks about the future of personalized medicine............................................262 11. Ethical and Regulatory Aspects of Personalized Medicine........... 265 Introduction to ethical issues....................................................................................... 265 Ethical issues of pharmacogenetics............................................................................265 Genotype-specific clinical trials .................................................................................265 Social issues in personalized medicine .......................................................................266 Privacy issues in personalized medicine......................................................................266 Race and personalized medicine ...............................................................................266 Regulatory aspects of personalized medicine ................................................................ 268 CLSI guideline for the use of RNA controls in gene expression assays...................................269 Regulatory aspects of pharmacogenetics.........................................................................269 FDA and pharmacogenomics.........................................................................................270 FDA guidance for pharmacogenomic data submissions ..................................................270 Joint guidelines of the FDA and EU regulators for pharmacogenomics..............................271 FDA and validation of biomarkers..............................................................................271 FDA and predictive medicine ....................................................................................272 12. Commercial Aspects of Personalized Medicine............................ 273 Introduction................................................................................................................ 273 Perceived financial concerns .........................................................................................273 Personalized medicine and orphan drug syndrome ............................................................273 Commercial aspects of pharmacogenomics ................................................................... 273 Cost of DNA testing .....................................................................................................273 Cost of sequencing the human genome ...........................................................................274 Cost of genotyping ......................................................................................................274 Cost of pharmacogenomics-based clinical trials ................................................................275 Business development of pharmacogenomic companies .....................................................275 Cost of personalized healthcare .................................................................................... 275 Cost of genetic testing .................................................................................................275 Economics of CYP genotyping-based pharmacotherapy ......................................................276 Cost of personalized medicines ......................................................................................276 The rising healthcare costs in the US .........................................................................276 Lowering the cost of healthcare ................................................................................277 Cost effectiveness of HIV genotyping.........................................................................277 Lowering the high costs of cancer chemotherapy .........................................................277 Reducing the cost incurred by adverse drug reactions .......................................................278 Overall impact of personalized medicine on healthcare ......................................................278 Drivers for the development of personalized medicine .................................................. 278 Evolution of medicine as a driver for personalized therapy markets......................................279 Collaboration between the industry and the academia .................................................. 280 Personalized medicine and drug markets...................................................................... 280 Impact on drug markets...............................................................................................280 Growth of markets relevant to personalized medicine ........................................................281 Pharmacogenomics.................................................................................................281 Pharmacogenetics..................................................................................................281 Pharmacoproteomics ..............................................................................................282 Biochips ...............................................................................................................282 Point-of-Care.........................................................................................................282 Markets for personalized medicines according to therapeutic areas ......................................282 Markets for personalized medicines according to geographical regions ..................................283 Market opportunities for personalization of me dicine .........................................................283 Impact of personalized medicine on other industries .........................................................284 Strategies for developing and marketing personalized medicine ..........................................285 Education of the public ............................................................................................285 Role of the Internet in development of personalized medicine ........................................285 13. References.................................................................................. 287
Tables Table 1-1: Selected terms relevant to the concept of personalized medicine .................................... 17 Table 1-2: Landmarks in the historic al development of personalized medicine .................................. 18 Table 2-1: Molecular diagnostic technologies used for personalized medicine ................................... 29 Table 2-2: Applications of biochip technology relevant to personalized medicine ............................... 35 Table 2-3: Companies developing haplotying technology .............................................................. 49 Table 2-4: Technologies for SNP analysis ................................................................................... 49 Table 2-5: A sampling of companies involved in technologies for SNP genotyping ............................. 59 Table 2-6: Comparison of proteomic and genomic approaches in personalized medicine..................... 65 Table 2-7: Selected methods for gene expression profiling............................................................ 66 Table 2-8: A selection of companies with gene expression technologies .......................................... 71 Table 2-9: Companies combining molecular diagnostics and therapeutics........................................ 73 Table 2-10: Applications of point-of-care diagnosis ...................................................................... 74 Table 2-11: Companies developing point-of-care diagnostic tests................................................... 75 Table 3-1: Pharmacogenetic vs. pharmacogenomic studies ........................................................... 83 Table 3-2: Enzymes relevant to drug metabolism........................................................................ 86 Table 3-3: Examples of mutation of the enzyme CYP450 .............................................................. 86 Table 3-4: Frequency distribution of drugs metabolized by major isoforms of CYP450........................ 87 Table 3-5: Commonly prescribed medications, which are metabolized by CYP2D6 ............................. 87 Table 3-6: Polymorphisms in drug target genes that can influence drug response ............................. 92 Table 3-7: Effect of genetic polymorphisms on disease response to drugs ....................................... 93 Table 3-8: Examples of genetically determined adverse reactions to drugs ...................................... 95 Table 3-9: Examples of genotyping and phenotyping in some diseases ........................................... 98 Table 3-10: Companies with novel molecular toxicology technology.................................................100 Table 4-1: Role of pharmacogenomics in clinical trials .................................................................110 Table 4-2: Examples of pharmacogenomics-based clinical studies .................................................110 Table 4-3: Tumor suppressor genes, their chromosomal location, function and associated tumors. .....113 Table 4-4: Gene polymorphisms relevant to cardiovascular disease management ............................114 Table 4-5: Companies involved in cardiovascular genomics..........................................................116 Table 4-6: A sampling of companies involved in neuropharmacogenomics ......................................118 Table 8-1: Important therapeutic areas for personalized medicine.................................................141 Table 8-2: Enzymes that metabolize antipsychotics....................................................................148 Table 8-3: Enzymes that metabolize antidepressants..................................................................149 Table 8-4: Genes that cause cardiovascular diseases ..................................................................158 Table 9-1: Factors that drive the development of personalized therapy in cancer.............................187 Table 9-2: Impact of molecular diagnostics on the management of cancer......................................188 Table 9-3: Selected companies involved in developing personalized cancer therapies .......................231 Table 10-1: Players in the development of personalized medicine .................................................236 Table 10-2: Members of the Personalized Medicine Coalition ........................................................237 Table 10-3: Biobanks relevant to personalized medicine ..............................................................249 Table 10-4: Role of bioinformatics in the development of personalized medicine ..............................251 Table 10-5: Advantages of personalized medicine for the biopharmaceutical industry .......................257 Table 10-6: Advantages of personalized medicine for the patients.................................................257 Table 10-7: Advantage of personalized medicine for the physicians ...............................................257 Table 10-8: Limitations of personalized medicine .......................................................................258 Table 10-9: Companies involved in predictive healthcare.............................................................260 Table 12-1: Drivers for the development of personalized medicine ................................................278 Table 12-2: Growth of markets relevant to personalized medicine 2005-2015 .................................281 Table 12-3: Markets for personalized medicine according to therapeutic area 2005-2015 ..................283 Table 12-4: Markets for personalized medicine according to major geographical regions ...................283 Table 12-5: Lack of efficacy in current therapy ..........................................................................284 Table 12-6: Impact of personalized medicine on other industries ..................................................284 Table 12-7: Strategies to develop personalized medicine .............................................................285 Table 12-8: Role of the Internet in development of personalized medicine ......................................285
Figures Figure 1-1: Relation of personalized medicine to other technologies ............................................... 21 Figure 2-1: Role of biochips/microarrays in personalized medicine ................................................. 36 Figure 2-2: Affymetrix GeneChip technology .............................................................................. 38 Figure 2-3: Role of CYP450 genotyping in development of personalized medicine.............................. 39 Figure 2-4: Role of SNPs in personalized medicine....................................................................... 46 Figure 2-5: A scheme of integrated healthcare and personalized medicine ....................................... 78 Figure 3-1: Role of pharmacogenetic technologies in personalized medicine ..................................... 84 Figure 4-1: Impact of new technologies at various stages of the drug discovery process ...................108 Figure 4-2: Steps in the application of pharmacogenomics in clinical trials ......................................110 Figure 7-1: Role RNAi in development of personalized medicine....................................................140 Figure 8-1: A hypothetical personalized medicine approach to management of hypertension..............164 Figure 9-1: Schematic role of proteomics in personalized management of cancer.............................205
Figure 10-1: enTrust Genetic Banking System of First Genetic Trust ..............................................249 Figure 10-2: Integration of technologies for the development of personalized medicine ....................254 Figure 12-1: Evolution of personalized medicine as a market driver...............................................279
14. Companies Involved in Developing Personalized Medicine ................... 5 Introduction...................................................................................................................5 Profiles..........................................................................................................................5 Collaborations .............................................................................................................205 Tables Table 14-1: Top five companies involved in personalized medicine...................................................5 Table 14-2: Selected collaborations of companies in personalized medicine ................................... 205 |