Patient enrichment strategies are using biomarkers to identify certain patient populations that are more likely to respond to the drug therapy or to avoid specific adverse events. This shift toward "personalized medicine," in which the patient receives a treatment based on their genetic as well as medical profile, is helping the drug industry to achieve the goal of cost- effective and faster research. Insight Pharma Reports, Biomarkers in Clinical Development: Implications for Personalized Medicine and Streamlining R&D report, 2005

21st century Drug Discovery & development map: Guide to terms in these glossaries    Site Map
Related glossaries include
Sub-categories  Biomarkers  Metabolic engineering
Applications Drug safety & pharmacovigilance  Genomics, Cancer genomics, Genetic & genomic testing 
Informatics: In Silico & molecular modeling  Technologies Microarrays, Sequencing
Biology Expression, SNPs & genetic variations.

ADE Adverse Drug Effect: Drug safety & pharmacovigilance

ADME: Abbreviation for Absorption, Distribution, Metabolism, Excretion. See also pharmacokinetics, drug disposition. [IUPAC Med Chem] Also referred to as ADME/ Tox ADME/ Toxicology or ADMET. 

These key properties of pharmaceutical compounds are tested for as part of lead optimization activities. 

Google = about 16,600 Mar. 5, 2004 [with drug*, pharma* etc.]

Narrower term: ADME optimization; Related terms: DMPK, pharmacokinetics, predictive ADME, toxicogenomics.

ADME optimization:

ADME/PK models:

ADMET ADME/toxicology: Understanding How to Evaluate ADME Data. Diagnostic PK Assays. QSAR for Medicinal Chemists. Case Studies from Real Projects. ADMET Case Studies from a Medicinal Chemistry Perspective Molecular Medicine Short course, Feb 27, San Francisco CA 

ADE Adverse Drug Event: Molecular Medicine glossary

ADR Adverse Drug Response: Molecular Medicine glossary

Ames test: This test for genotoxicity, developed in the 1970s, determines the reversion of a mutant his gene in Salmonella typhimurium when exposed to a genotoxic agent that causes base changes affecting the mutant gene.

bioequivalence:  Scientific basis on which generic and brand- name drugs are compared. To be considered bioequivalent, the bioavailability of two products must not differ significantly when the two products are given in studies at the same dosage under similar conditions. Some drugs, however, are intended to have a different absorption rate. FDA may consider a product bioequivalent to a second product with a different rate of absorption if the difference is noted in the labeling and doesn't affect the drug's safety or effectiveness or change the drug's effects in any medically significant way. Drug Review Glossary, FDA Consumer Magazine, 25 definitions http://www.fda.gov/fdac/special/newdrug/bengloss.html 

See also therapeutic equivalency

bioinequivalence:

biological markers, biomarkers: Biomarkers

biomedical informatics: Molecular Medicine glossary

chemoprediction: Cancer genomics glossary

chronopharmacokinetics: Molecular Medicine glossary

clinical pharmacology:   The branch of pharmacology that deals directly with the effectiveness and safety of drugs in humans. MeSH, 1980

 This review discusses the basic tenets of clinical pharmacology research, including pharmacokinetic and pharmacodynamic analysis, therapeutic window, and clinical trial design, and the issues that may arise in the application of transcriptome analysis to clinical pharmacology studies. B. Hsu et. al, Application of transcriptome analysis to clinical pharmacology studies, Current Molecular Medicine,. 5(1): 65- 82, Feb. 2005

clinical pharmacometabolomics:  The segregation of patient populations using small molecule biomarkers in clinical trials, adverse drug reaction, and drug efficacy evaluation.  Phenomenome Discoveries http://www.phenomenome.com/ 

Broader term: pharmacometabolomics

cognome, human: The Human Cognome Project seeks to reverse- engineer the human brain, paralleling in many ways the Human Genome Project and its success in deciphering the human genome. Analytical techniques used in the Human Cognome Project include: studying brain biology and chemistry in wet lab experiments, studying brain structure using frozen tissue sample scanning and imaging, studying brain activity and function using active brain imaging, (which is improving both spatial and temporal resolutions in successive technology generations), studying brain development though the field of morphogenesis, studying brain disease, injury and dysfunction through the fields of brain pathology, neurology and psychopharmacology, and studying psychology relative to brain structure and function through neuropsychology, Wikipedia, accessed Aug. 9, 2005 http://en.wikipedia.org/wiki/Human_Cognome_Project

Robert Horn, Stanford, Beginning to concepturalize the Human Cognome Project http://www.stanford.edu/~rhorn/a/topic/cognom/tocCncptlzHumnCognome.html  

communications standards: It is clear that shared understanding of the basic data elements within pharmacogenomics is a critical building block upon which to build an information infrastructure. Methods for communicating these data are therefore equally as important. The two main areas that require progress are the definition of shared syntax (how information is structured in a data file) and semantics (how the information should be interpreted by others). [Russ Altman "Challenges for Biomedical Informatics and Pharmacogenomics, Stanford Medical Informatics, c.2001] http://www-smi.stanford.edu/pubs/SMI_Reports/SMI-2001-0898.pdf

Related terms: Information management & interpretation glossary controlled vocabularies, syntax, semantics

computational pharmacology: Our ultimate goal is transforming the process of drug design through the use of advanced computational techniques, particularly machine learning and knowledge- based approaches applied to high throughput molecular biology data. We create novel algorithms for the analysis and interpretation of gene expression arrays, proteomics, metabonomics, and combinatorial chemistry. We also create tools for building, maintaining and applying knowledge- bases of molecular biology, and for knowledge- driven inference from multiple biological data types. Finally, we are developing and applying natural language processing techniques for information extraction from and management of the biomedical literature. The UCHSC Center for Computational Pharmacology, Univ. of Colorado Health Sciences Center, US http://compbio.uchsc.edu/Hunter_lab/ 

computational therapeutics: Molecular Medicine glossary

computational toxicology: Drug safety & pharmacovigilance glossary

Related terms: In Silico & molecular modeling glossary QSAR; Algorithms glossary SAR

consumer genomics: See personal medicine

cytochrome P450 enzymes: Pharmaceutical biology glossary

DMPK: Drug metabolism and pharmacokinetics. 

An informative snap shot of current trends in DMPK research at most of the major pharmaceutical companies. Extensive case studies on drug metabolism, metabolite profiling, reactive metabolites and drug transporters. Extended coverage of the blood- brain barrier and interpreting DMPK data. Driving DMPK, May 23-25, 2006 • Philadelphia, PA

Google = about 4,070 [-gene[s] Mar. 4, 2004

Related terms: ADME

disease resistant individuals: Another interesting group [of phenotypes for pharmacogenomics] includes those who have no disease yet have high risk factors.  A classic example are individuals who exposed themselves to multiple risk factors for HIV - unprotected intercourse with multiple partners, intravenous drug use, etc. - and who either did not get the disease, or when they did get it, it progressed very slowly. Interestingly, a gene target was identified in this group - the CCRX deletions.  There are many other disease- resistant groups in medicine. ... In general, disease- resistant groups provide a way of identifying given targets that are pre- validated in human subjects. [CHI Summit Pharmacogenomics report]

drug metabolism: About 150 terms directly related to the field of drug metabolism will be compiled and defined by this expert group for dissemination to the scientific community. This will help achieve a common definition base across the various publications in this field. … The working party has pared-down its initial, all- inclusive list of over 600 terms related to drug metabolism, to a focused list of about 170 terms. The latter better represents just those terms that are the most relevant for medicinal chemistry. IUPAC Metabolism terms, project Number: 2000-009-1-700, 2002 http://www.iupac.org/projects/2000/2000-009-1-700.html

Drug Metabolizing Enzymes DME genes: The biochemical and transcriptional mechanisms by which drugs and xenobiotics affect the expression of the Phase I (cytochrome P450) and Phase II (e.g, glutathione S-transferase) drug metabolizing enzymes (DMEs). These important proteins are responsible for metabolizing endogenous compounds such as steroids, prostaglandins, and leukotrienes, as well as drugs and environmental pollutants. A notable characteristic of some DME genes is their ability to be transcriptionally upregulated by treatment with chemical  inducers such as phenobarbital (PB). [Jeff DeJong, Biology Dept. Univ. of Texas at Dallaas]  http://nsm1.utdallas.edu/bio/Dejong/dej99.html

drug response: Includes drug dispositions (pharmacokinetics, PK) and drug effect (pharmacodynamics, PD). E15 terminology in Pharmacogenomics, ICH Draft 2 (Revision 2), 2006 http://www.fda.gov/cder/guidance/7619dft.pdf 

Comparison of pharmacogenomics studies will be difficult until a more standard definition of "response" and of various phenotypes can be agreed upon. 

drug response phenotype: SNPs are also useful in pharmacogenomics for matching an individual’s genotype with a drug- response phenotype. It is possible, in this context, to identify individuals who cannot adequately metabolize the drug and must be dosed accordingly, or those with a compromised drug target, who could not benefit from the drug. The discovery of such a relationship will require measuring hundreds of SNPs in or near candidate genes in several thousands of individuals. Validation will require detecting very few SNPs in several hundred to several thousand individuals. These relationships can be used either for clinical trials or diagnostically to determine therapy. Each clinical trial will involve measuring few SNPs in the low thousands of individuals.

drug safety:  Post-Approval Drug Safety: Approaches and Processes to Reduce Risk, Nov. 29-30, 2006, Philadelphia PA    more Drug safety & pharmacovigilance glossary & taxonomy

ecotoxicogenomics, ecotoxicology: Genomics categories :

enzyme kinetics:  Most of the chemical reactions which occur in living systems, if left to their own devices, would occur at rates which are very slow, some immeasurably slow. Catalysts are required to make these reactions go at rates that are useful to the cell. In biological systems the catalysts are enzymes. [Introduction, Enzyme Kinetics Tutorial, Biochemistry & Molecular Biology Dept., Thomas Jefferson Univ., US] http://jeffline.tju.edu/CWIS/DEPT/biochemistry/kinetics/HTML/PAGE1.HTMLexpression pharmacogenomics:  Applies genome/proteome scale differential expression technologies to both in vivo and in vitro models of drug response to identify candidate markers correlative with and predictive of drug toxicity and efficacy. It is anticipated to streamline drug development by triaging towards lead compounds and clinical candidates that maximize efficacy while minimizing safety risks. Bonnie E. Gould Rothberg "Use of animal models in expression pharmacogenomic analysis" (Pharmacogenomics Journal 1: 48-58, 2001 http://www.nature.com/tpj/journal/v1/n1/abs/6500008a.html 

Related terms: Expression, genes & more glossary

FDA guidelines: Guidance for Industry, Pharmacogenomic Data Submissions CDER, CBER, CDRH, FDA,  March 2005  Non-binding recommendations.  http://www.fda.gov/cber/gdlns/pharmdtasub.pdf 

functional proteomics: Proteomics glossary

genomic biomarkers: Biomarkers glossary

genomic data: PGx [pharmacogenomics] and PGt [pharmacogenetics] research depends on the use of samples to generate data. A harmonised definition for the coding of these samples and their associated data will facilitate use in research and development of new medicines. E15 terminology in Pharmacogenomics, ICH Draft 2 (Revision 2), 2006 http://www.fda.gov/cder/guidance/7619dft.pdf 

genomic data samples coding: There are four general categories of coding: identified, coded, anonymised and anonymous. Coded data or samples can be single or double coded. The implications of using a specific data and sample coding category should be considered in the design of PGx [pharmacogenomics] and PGt [pharmacogenetic] research studies. E15 terminology in Pharmacogenomics, ICH Draft 2 (Revision 2), 2006 http://www.fda.gov/cder/guidance/7619dft.pdf 

genotype: Genomics glossary  

genotype-to-phenotype:  Investigators start with a set of genes that are known (or strongly suspected) to be important in modulating the response to drugs, and search for variation in their sequences (that is, their genotype.) Given an understanding of genetic variations, they then search for the phenotype consequences.  [Russ Altman "Challenges for Biomedical Informatics and Pharmacogenomics, Stanford Medical Informatics, c.2001] http://www-smi.stanford.edu/pubs/SMI_Reports/SMI-2001-0898.pdf 

Compare phenotype-to-genotype

genotyping: Sequencing glossary

Gleevec Cancer genomics glossary 

global transcription profiling: Expression glossary

hepatotoxicity: Drug Safety & pharmacovigilance

Herceptin Cancer genomics glossary

idiosyncratic toxicity: Few drug development surprises can be as devastating as toxicity problems that only show up under a combination of conditions as idiosyncratic toxicity. Because of the role of variations in human drug metabolizing enzymes there may only be subtle (or no) evidence of such problems during pre-clinical safety studies. Such problems are also unlikely to show up in all but the largest clinical trials, but if the side effects are serious, it can result in product withdrawal.   Idiosyncratic toxicity: Understanding, Prediction and Prevention, Nov. 17-18, 2004, Philadelphia PA

immunophenotyping: The recording of observable immunological characteristics of an individual, which result from interaction between the genes of that individual and the environment. [NASA's Neurolab glossary, 1997] http://neurolab.jsc.nasa.gov/glossim.htm

Broader term: Genomics glossary: phenotype

in silico pharmacology:  Bioinformatics is used in drug target identification and validation and in the development of biomarkers and toxicogenomic and pharmacogenomic tools to maximize the therapeutic benefit of drugs. Now that the 'parts list' of cellular signalling pathways is available, integrated computational and experimental programmes are being developed, with the goal of enabling in silico pharmacology by linking the genome, transcriptome and proteome to cellular pathophysiology. PA Whittaker, What is the relevance of bioinformatics to pharmacology? Trends in Pharmacological Sciences. 24 (8): 434- 439, August 2003.

Google = about 24 Sept. 4, 2003; about 22 June 7, 2004; about 76 Nov 10, 2006

See also under computational pharmacology

in vivo pharmacology: To understand fully the role of a gene in health and disease, it is necessary to know how it contributes to the complex physiology of the organism.

There are several emerging biotechnologies of highly significant scientific and medical value, which require in vivo skills. The best established of these is the knockout animal in which a gene encoding an enzyme, mediator, neurotransmitter or receptor has been selectively disrupted. The generation of the disrupted gene and its introduction into the animal genome are achieved by molecular biologists. Once successful, gene disruption has consequences that require the attention of in vivo biologists. The combination of molecular biology and integrated biology provides a very powerful analytical tool with which to investigate disease. Other such combinations are provided by techniques, including: (1) conditional gene knockout and knock-in techniques, which allow the expression of genes to be up- or downregulated at any time; (2) the use of cell specific promoters to regulate the expression of genes in selected cells [19]; (3) transgenic expression of human genes; and (4) expression in animals of mutated genes that have been identified as possible mediators of disease in humans  In each case, the skills in molecular manipulations have to be combined with skills of in vivo investigations to realize the full (and sometimes completely unexpected [21]) effects of the molecular changes.  [in vivo Pharmacology Training Group, Fall and Rise of in vivo Pharmacology, HMS Beagle, Issue 120, Feb. 15- 28, 2002] http://news.bmn.com/hmsbeagle/current/notes/feature3

individualized medicine: Another term for pharmacogenomics.  One key issue for pharmacogenomics is just how individualized drug therapies are going to become.  There is fundamental tension between the economics of faster and cheaper medical care and customized prescriptions and therapies.  Haplotypes offer hope, as does the tradeoffs between liability for patients likely to encounter adverse events who can be screened out before they take a drug and the prospect of overly fragmented pharmaceutical segments.

Google = about 1, 090 May 7, 2003; about 2,730 June 7, 2004; about 42,600 Nov 10, 2006

Related term: personalized medicine

influence-based data mining: See Algorithms & data management glossary  for relevance of this technique to pharmacogenomics data.

integrative and organ systems pharmacology: "Pharmacological research using in vivo animal models or substantially intact organ systems that are able to display the integrated responses characteristic of the living organism that result from complex interactions between molecules, cells, and tissues." Such studies are important because isolated molecules and cells in vitro do not accurately display all of the properties that they possess in vivo. NIGMS, SHORT COURSE: INTEGRATIVE AND ORGAN SYSTEMS PHARMACOLOGY, Apr 26, 2004, RFA-GM-05-006  http://grants.nih.gov/grants/guide/rfa-files/RFA-GM-05-006.html 

kinetic outliers: Intersubject variability - in particular, the presence of kinetic outliers - is encountered during the course of a drug development program. Often, these outliers can be explained by genetic variability or polymorphism in cytochrome CYP450 genes responsible for drug metabolism. Genetic analysis of outliers could help explain the variability in metabolism and possibly influence the development and labeling of the drug in question. [CHI Summit Pharmacogenomics report] Related term: pharmacokinetics

LD 50:  The dose of a substance that will kill half (50%) of the treated test animals when given as a single dose.  A measure of acute toxicity. [Chemical Hygiene Glossary of Terms, Environment, Health & Safety Lab, Lawrence Berkeley National Laboratory, US]

lure of initial value: Drug approvals glossary

markers: Biomarkers glossary

mechanism of action: A more detailed, molecular description of events. [Genetic Toxicology Association, Spring 2000 meeting  report]  

The knowledge of mechanisms of action is important for two reasons: (1) you need secondary assays that are really associated with a mechanism of action in order to optimize leads in the best possible way, and (2) the FDA will increasingly require that you know the mechanism of action, before you go into clinical trials, to prevent possible toxic side effects. ... The good news is that an increasingly large percentage of drugs that are going through the pipeline now have known mechanisms of action (MOAs) at a molecular level, which is a contrast to 10 to 20 years ago. We now are understanding how therapies interact with the human body and with disease on a much more detailed level. Most drugs now have known targets, and most targets participate in known pathways. The caveat to that, as I mentioned earlier, is that biology is very complicated, and we’re learning that the target isn’t enough. It’s not enough to simply know that a certain molecule binds to a certain protein and turns it off. What you really need to know about are the pathways, and the side pathways, and the domains, and the homologous targets.

Broader term: mode of action 
Narrower term: molecular mechanism of action

median effective dose: The dose of a drug predicted (by statistical techniques) to produce a characteristic effect in 50 percent of the subjects to whom the dose is given. The median effective dose (usually abbreviated ED50) is found by interpolation from a dose- effect curve. The ED50 is the most frequently used standardized dose by means of which the potencies of drugs are compared. Although one can determine the dose of drug predicted to be effective in one percent (ED1) or 99 percent (ED99) of a population, the ED50 can be determined more precisely than other similar values. An ED50 can be determined only from data involving all or none (quantal) response; for quantal response data, values for ED0 and ED100 cannot be determined. In analogy to the median effective dose, the pharmacologist speaks of a median lethal dose (LD50), a median anesthetic dose(AD50), a median convulsive dose (CD50), etc. [Edward W. Pelikan, Glossary of terms and symbols used in pharmacology, Boston University Medical School, US, 1993- 1998 http://www.bumc.bu.edu/www/busm/pharmacology/Programmed/framedGlossary.html

metabolic profiling: Metabolic engineering glossary

metabolism- medicinal chemistry: Pharmaceutical biology glossary See also drug metabolism

metabolite: Metabolic engineering glossary

metabolite patterns and drug development: Drug discovery & development glossary 

metabonomics/metabolomics: In the context of toxicology, this approach involves evaluating tissues and biological fluids for changes in metabolite levels that result from toxicant exposure. In one early manifestation, proton nuclear magnetic resonance (NMR) studies can produce signal patterns representing metabolite mixtures; these patterns can be correlated with toxicant mechanism or identity of affected organs. [CHI report Toxicogenomics: The Promise of Safer, Smarter Drug Development,  2002]

See also -Omes & -omics glossary metabolomics, metabonomics

microdosing: Covers accelerator mass spectrometry, microradioactivity, preclinical Microdosing, attomole sensitivity, and declining R&D productivity. Microdosing Molecular Medicine Short course Feb. 27, 2007, San Francisco CA

Almost half of new drugs fail at the transition from animal to human trials. Human microdosing points the way to smarter drug development and may be the answer to what has been perceived as a productivity crisis in the industry.  By testing only 1% of a pharmacological dose in humans, failures can be identified much earlier in the development process – at Phase 0. This approach has proven to be successful in ADME prediction, helping scientists identify which candidates merit further development.  Microdosing technology can also be used to determine absolute bioavailability, thus aiding drug developers to assess pharmacodynamics and physiological activity. Gathering scientists together to discuss this new and important tool certainly seems needed in order to promote faster, more efficacious drug development.  Using microdosing shows promise of reducing time spent on drugs destined to fail, and also cutting down on the costs associated with testing. In addition, human microdosing at Phase 0 will mitigate the need for testing in animals, and can also help to determine the best animal models to use. Microdosing studies have become possible due in large part to the technical advances of detection instruments. We will be discussing the use of AMS, PET, and LC-MS/MS in assessing PK and metabolism, and how microdosing can help the pharmaceutical industry World Pharmaceutical Congress Microdosing June 12-13, 2007 • Philadelphia, Pa

The concept of microdosing calls for the administration of an investigational compound to healthy human volunteers in doses at least two orders of magnitude lower than those that, based on animal studies, would have a pharmacological effect in humans. There is also a fixed ceiling dose (100 μg) that must not be exceeded. Insight Pharma Reports, Microdosing in Translational Medicine: Pros and Cons,  2006   Also human microdosing

mode of action MOA: Examples of MOAs that are usually encountered include mutagenicity, mitogenesis, inhibition of cell death, immune suppression, among others. [Genetic Toxicology Association, Spring 2000 meeting report] http://www.ems-us.org/gta/springr00.html

The process governing the action of chemicals without the level of detail required to determine mechanism of action. 

molecular mechanisms of action: Activities at the molecular level of exogenous compounds affecting normal biochemical pathways, including the actions of PROTEINS; CELL SURFACE RECEPTORS; NEUROTRANSMITTERS; and inhibitors.  [MeSH 2004]

See also mechanism of action

molecular pharmaceutics: A new journal from the American Chemical Society focusing on molecular mechanistic approaches to the development of bio- available drugs and delivery systems.  ...  research advancing the understanding of pharmaceutics at the molecular level while providing a forum for research among the fields of physical and pharmaceutical chemistry, biochemistry, molecular and cell biology, and materials science focused on drug delivery. With an emphasis on fundamental molecular concepts in chemistry and biology as applied to drug and drug delivery system activity, the journal will showcase emerging technologies used to advance the drug development process. Scientific areas include: physical and pharmaceutical chemistry, biochemistry, molecular and cellular biology, and polymer and materials science as they relate to drugs and drug development.  American Chemical Society, Molecular Pharmaceutics, http://pubs.acs.org/mp/promodocs/flier.pdf 

molecular pharmacology: Knowledge about drugs interacting with known target molecules and the identification of novel target molecules. . Molecular and Systems Pharmacology, Emory University, 2006 http://biomed.emory.edu/programs/program_msp.cfm

Related term: systems pharmacology

molecular phenotyping:  The process of determining specific nucleic acids sequences inside a cell. .. Molecular phenotyping by in situ PCR combined with immunophenotyping is not yet completely reduced to practice, therefore, some development work is also necessary.  [Carleton Stewart, Molecular Phenotyping by Cytometry - Cytokine Expression, Roswell Park Cancer Institute, R01, CA60200, 9/23/92 to 3/31/01 http://researchportfolio.cancer.gov/cgi-bin/abstract.pl?Term=42&CSO=4.1&ProjectID=5302

molecular profiling: Expression glossary

molecular toxicology: Drug safety & pharmacovigilance

NIEHS National Institute of Environmental Health Sciences: Involved in various toxicology and toxicogenomics programs and studies of the environmental factors that interact with genetic and genomic factors. [NIEHS, Research Triangle Park, NC, US] http://www.niehs.nih.gov/

nanotoxicology: Nanoscience glossary

neuropharmacogenomics:   

Google - about 8 July 17, 2002; about 14 Aug. 26, 2003; about 34 June 7, 2004; about 77 Nov 10, 2006

oncopharmacogenomics: Identifying targets for anti- cancer drugs based on genomic vulnerability. GRA Georgia Research Alliance Annual Report, 2001

Google - about 7 July 17, 2002; about 29 June 7, 2004; about 47 Nov 10, 2006

Related terms:  Biomarkers glossary; Cancer genomics glossary

organ systems pharmacology: See integrative and organ systems pharmacology

pathogen sequencing: Sequencing glossary

personal medicine: Continuing advances in genetic research combined with the Internet’s role in empowering individual’s personal health education are poised to revolutionize the healthcare industry. Kits utilizing DNA testing are obvious examples of how genetic technology can be applied to improve patient care. Proponents argue that putting personalized medical information directly into the hands of individuals allow for informed choices about their health. Skeptics point out that although genetic variation is linked to complex disease little is known about the interplay of genetic and non-genetic factors such as diet, exercise, smoking and pollution that also affect a person's risk for disease. Progression of Personal Medicine: Kit Development for Consumer Genomics June 10- 11 2008 San Francisco CA

personalized medicine: Includes targeted therapeutics, certain diagnostics, theranostics, pharmacogenomics, pharmacogenetics, and any developments that promote or impede personalized medicine (also known as individualized therapy). Personalized Medicine, PharmaWeek http://www.pharmaweek.com/topic_PersonalizedMedicine.asp 

The first example of personalized medicine is the HIV test, but instead of genotyping the host, this test involves genotyping the virus and determining what drugs are most effective against the virus or which drugs the virus shows the least resistance to. Pharmacogenetics Offers New Opportunities in Disease Treatment and How Medicines Are Marketed: An Interview with Craig Fitzgerald of HealthCarta, CHI's GenomeLink 25.2 http://www.chiresource.com/newsarticles/issue25_2.asp

Priorities for Personalized Medicine, President's Council of Advisors on Science and Technology Policy,  2008 http://www.ostp.gov/galleries/PCAST/pcast_report_v2.pdf  

Google = about 6,410 May 7, 2003; about 18,300 June 7, 2004, about 453,000 April 24, 2006; about 468,000 Nov 10, 2006; about 553,000 Sept 29, 2008.

Related terms: individualized medicine, pharmacogenomics

Pgx:  Collective use of pharmacogenetics and pharmacogenomics. NIH comments on FDA's draft guidance for Industry Pharmacogenomic Data Submission, Docket No. 2003D-0497, Feb. 2004 http://www.fda.gov/ohrms/dockets/dailys/04/feb04/021104/03D-0497_emc-000009-01.pdf

Google May 21, 2004  pgx and pharmacogenomics = about 326  pgx and pharmacogenetics about 329  

pharmacodynamic biomarkers:  Pharmacodynamic biomarkers for molecular cancer therapeutics, D. Sarker and P Workman, Advances in Cancer Research 96: 213-268, 2007

pharmacodynamics: Study of the biochemical and physiological processes determining the effects of drugs on organisms. 

Narrower terms: pharmacokinetics;  pharmacodynamic biomarkers  
Related terms: ADME, mechanism of action, mode of action

pharmacoepigenomics: MGMT hypermethylation demonstrates the possibility of pharmacoepigenomics: methylated tumors are more sensitive to the killing effects of alkylating drugs used in chemotherapy. M Esteller, JG Herman, Generating mutations but providing chemosensitivity: the role of O6-methylguanine DNA methyltransferase in human cancer, Oncogene 23(1): 1-8, Jan 8, 2004 

This review argues that the epigenome, which plays a critical role in controlling gene expression, plays also an important role in drug responsiveness. The epigenome is composed of chromatin and its modifications and DNA methylation. DNA methylation and chromatin structure are dynamic and tightly linked. Alterations in DNA methylation are involved in the pathology of cancer and in normal aging. It is suggested here that pharmacoepigenomics should be recognized as a new field in pharmacology. This field will address the epigenomic basis of issues which were traditionally the focus of pharmacogenetics and pharmacogenomics such as inter-individual differences in drug responsiveness, the impact of drugs on gene expression profiles, identification of unpredicted side effects of drugs at early stages of preclinical development and the discovery of novel drug targets. Moshe Szyf, Toward a Discipline of Pharmacoepigenomics, Current Pharmacogenomics, 2 (4): 357- 377, Dec. 2004 http://www.ingentaconnect.com/content/ben/cpg/2004/00000002/00000004/art00006

Epigenomics, official journal of the DNA Methylation Society, Moshe Szyf, editor http://www.landesbioscience.com/journals/epigenetics/callforpapers.php

Google = about 19 Nov 5, 2005, about 38 Oct. 25, 2006

pharmacogenetic test: Genetic & Genomic testing 

pharmacogenetics: A subset of pharmacogenomics and is defined as The influence of variations in DNA sequence on drug response. ... does not include other disciplines such as proteomics and metabonomics.  E15 terminology in Pharmacogenomics, ICH Draft 2 (Revision 2), 2006 http://www.fda.gov/cder/guidance/7619dft.pdf 

Adverse effects from toxic substances from the environment.  MeSH 2004 

The terms "pharmacogenomics" and "pharmacogenetics" are often interchanged and used without clear definition. For the purpose of this meeting, I will use working definitions. Pharmacogenetics refers to people including gene identification and "right medicine for right patient." Pharmacogenomics refers to the application of tools including, but not limited to, the functional genomics toolbox of differential gene expression (DGE), proteomics, yeast 2- hybrid (Y2H) analyses, tissue immuno- and histopathology, etc. There are two applications of pharmacogenetics that may use similar techniques but are quite distinct: a) susceptibility gene identification and b) "right medicine for right patient" . [Allen D. Roses "Pharmacogenetics and pharmacogenomics in the discovery and development of medicines " Pharmacogenetique et Pharmacogenetique, Institut Pasteur, Paris [France], 12-13 Octobre 2000, Institut Pasteur]  http://www.pasteur.fr/applications/euroconf/pharmaco/pharmaco-prog.html

A subset of pharmacogenomics encompassing the study of genetic variation underlying differential response to drugs, particularly genes involved in drug metabolism. 

With the implementation of pharmacogenetics, diseases will be evaluated by mechanisms, rather than just symptoms, and early response will be based on prognosis and susceptibility rather than just diagnosis. It will introduce a bottom- up approach to disease, which will be defined in terms of its heterogeneity, and not "averaged out" to conform to a uniform model. 

Google = about 24,700 May 7, 2003; about 112,000 June 7, 2004; 1,500,000 Nov 10, 2006

See also pharmacogenomics

pharmacogenetics- drug development: You want to use that [pharmaco] genetic knowledge to screen for efficacy or safety so that instead of enrolling 2- 3,000 patients you might only have to enroll 500 or 600. That could limit your costs significantly. When you have to recruit 500 versus thousands, the development costs are much lower. Being able to use a diagnostic that will predict adverse events could be significant; if you just look over the last ten years at the number of drugs removed from the market due to ADRs in a small segment of the population, giving the FDA and the industry alternatives could save billions of dollars in improved care. Pharmacogenetics Offers New Opportunities in Disease Treatment and How Medicines Are Marketed: An Interview with Craig Fitzgerald of HealthCarta, CHI's GenomeLink 25.2  http://www.healthtech.com/newsarticles/issue25_2.asp

pharmacogenetics - drug discovery: I think that pharmacogenetics has already arrived for drug discovery. A cytochrome P450 test is available, and a lot of companies are setting up screening for metabolic pathways as part of drug discovery. That approach can save companies a lot of time and energy; they can engineer molecules that should not have that drug interaction and metabolism problem. Pharmacogenetics Offers New Opportunities in Disease Treatment and How Medicines Are Marketed: An Interview with Craig Fitzgerald of HealthCarta, CHI's GenomeLink 25.2  http://www.healthtech.com/newsarticles/issue25_2.asp

pharmacogenome: -Omes & -omics glossary

pharmacogenomic test: An assay intended to study interindividual variations in whole genome or candidate gene, single nucleotide polymorphism SNP maps, haplotype markers, or alterations in gene expression or inactivation that may be correlated with pharmacological function and therapeutic response, In some cases the pattern or profile of change is the relevant biomarker, rather than changes in individual markers.  Guidance for Industry, Pharmacogenomic Data Submissions CDER, CBER, CDRH, FDA,  March 2005  Non-binding recommendations.  http://www.fda.gov/cber/gdlns/pharmdtasub.pdf 

pharmacogenomics: The investigation of variations of DNA and RNA characteristics as related to drug response. ... does not include other disciplines such as proteomics and metabonomics.  E15 terminology in Pharmacogenomics, ICH Draft 2 (Revision 2), 2006 http://www.fda.gov/cder/guidance/7619dft.pdf 

Comprises the study of variations in targets or target pathways, variation in metabolizing enzymes (pharmacogenetics) or, in the case of infectious organisms, genetic variations in the pathogen. CHI Drug Discovery Map http://www.healthtech.com/drugdiscoverymap.asp

For the purposes of this guidance, the term pharmacogenomics is defined as the use of a pharmacogenomic or pharmacogenetic test (see glossary for definitions) in conjunction with drug therapy. Pharmacogenomics does not include the use of genetic or genomic techniques for the purposes of biological product characterization or quality control (e.g. cell bank characterization, bioassays). The FDA plans to provide guidance on those uses at a future time. Pharmacogenomics also does not refer to data resulting from proteomic or metabolomic techniques.  This document is not meant to provide guidance on pharmacoproteomics or multiplexed protein analyte based technologies. Guidance for Industry, Pharmacogenomic Data Submissions CDER, CBER, CDRH, FDA,  March 2005  Non-binding recommendations.  http://www.fda.gov/cber/gdlns/pharmdtasub.pdf 

The tools for pharmacogenomics carry the promise of achieving improved drug safety, earlier attrition rates, decreased drug development costs, a reduced drug development cycle, and resuscitation of failed drugs. Delivering on these promises will lead the way toward longer patent life and greater profits for new drugs. The challenge — and opportunity — for pharmaceutical companies is to figure out how to deploy the appropriate pharmacogenomics strategy into the drug sales model to facilitate maximum return. 

Can be construed as the study of the entire complement of pharmacologically relevant genes, how they manifest their variations, how these variations interact to produce phenotypes, and how these phenotypes affect drug response. A key element of pharmacogenomics is, not surprisingly, the large- scale and high throughput collection of data, including DNA sequence variations, mRNA expression analysis, enzyme kinetic assays, and cellular localization experiments. [Russ Altman "Challenges for Biomedical Informatics and Pharmacogenomics, Stanford Medical Informatics, c.2001] http://www-smi.stanford.edu/pubs/SMI_Reports/SMI-2001-0898.pdf 

The study of how an individual's genetic inheritance affects the body's response to drugs and holds the promise that drugs might one day be tailor- made for individuals and adapted to each person's own genetic makeup. Environment, diet, age, lifestyle, and state of health all can influence a person's response to medicines, but understanding an individual's genetic makeup is thought to be the key to creating personalized drugs with greater efficacy and safety.  Pharmacogenomics combines traditional pharmaceutical sciences such as biochemistry with annotated knowledge of genes, proteins, and single nucleotide polymorphisms. [Human Genome Project Information, Pharmacogenomics, Oak Ride National Lab, 2001] http://www.ornl.gov/hgmis/medicine/pharma.html

Pharmacogenomics is the analysis of the effect of genomics — in particular, genetic variation (polymorphisms) — on drug response. This practice can potentially help clinicians administer more tailored treatment. The term pharmacogenetics is often used to refer specifically to tests that predict drug response; however, the terms pharmacogenetics and pharmacogenomics are often used interchangeably. 

From pharmacology + genomics.  

Google = about 29,200 May 7, 2003; about 117,000 June 7, 2004; about 387,000 Apr. 25, 2005,  about 1,670,000 Oct. 25, 2006

Narrower term: pharmacogenetics Related terms:  individualized medicine, personalized medicine; Gene definitions Proteomics glossary pharmacoproteomics

Promise of pharmacogenomics, National Center for Biotechnology Information, US, 2001 http://www.ncbi.nlm.nih.gov/About/primer/pharm.html  Part of NCBI's Science Primer

pharmacogenomics technologies: The most critical technology is high throughput genotyping (both for large numbers of samples to be genotyped for a few variants, and a smaller number for fuller sequencing of  a large number of variants).

pharmacoglycomics: Glycosciences glossary

pharmacokinetic- pharmacodynamic relationship:  Quantitative relationship between blood and tissue concentrations of the drug (pharmacokinetics) and the effects (pharmacodynamics) of a drug. J. Kirchheiner et. al, Pharmacogenetics- based therapeutic recommendations - ready for clinical practice? Nature Reviews Drug Discovery, 4 (8): 639- 647, August 2005

pharmacokinetics: Process of the uptake of drugs by the body, the biotransformation they undergo, the distribution of the drugs and their metabolites in the tissues, and the elimination of the drugs and their metabolites from the body. Both the amounts and the concentrations of the drugs and their metabolism are studied. The term has essentially the same meaning as toxicokinetics but the latter term should be restricted to the study of substances other than drugs. [IUPAC Compendium]

Dynamic and kinetic mechanisms of exogenous chemical and drug absorption, biotransformation, distribution, release, transport, uptake, and elimination as a function of dosage, and extent and rate of metabolic processes. It includes toxicokinetics, the pharmacokinetic mechanism of the toxic effects of a substance.  [MeSH, 1988]

pharmacology:  The study of the origin, nature, properties, and actions of drugs and their effects on living organisms. MeSH, 1980 

Used with drugs and exogenously administered chemical substances for their effects on living tissues and organisms. It includes acceleration and inhibition of physiological and biochemical processes and other pharmacologic mechanisms of action. MeSH subheading, 1988 

Narrower terms: Computational pharmacology, in silico pharmacology,

pharmacometabonomics:   http://www.nature.com/nm/journal/v12/n5/full/nm0506-510.html 

See also Metabolic engineering glossary metabonomics

pharmacomethylomics: John N. Weinstein "Pharmacogenomics: Teaching Old Drugs New Tricks" New England Journal of Medicine 343: 1408-1409, 2000  

Google = about 13 July 11, 2002; about 91 July 14, 2003; about 131 June 7, 2004, about 106 Aug. 15, 2005, about 125 Oct. 25, 2006

pharmacophylogenomics:  David B. Searls, Pharmacophylogenomics, Genes, Evolution and Drug Targets, Nature Reviews Drug Discovery 2 ; doi:10.1038/nrd1152, 2003

Google =  about 21 Mar. 3, 2004, about 70 Aug. 15, 2005 ,about 181 Oct. 25, 2006

pharmacoproteomics: Once you have identified a number of proteins secreted in sera or urine, you can segregate the proteins by which are linked to early disease, the onset of metastasis, who does and does not tolerate treatment, toxic effects, and who is prone to resistance or relapse.  Fundamentally, you establish a pharmacoproteomic profile of an individual. Like pharmacogenomics, which allows researchers and clinicians to predict the response of an individual to drug treatment on the basis of his or her genetic profile, the evolving field of pharmacoproteomics allows drug developers and clinicians to further subdivide the treated population.  Randall C. Willis, ":The Matching Game" Modern Drug Discovery, 5(5): 26-35, May 2002 http://pubs.acs.org/subscribe/journals/mdd/v05/i05/html/05willis.html

Use of protein expression data to predict toxicity and understand drug mode of action. 

Google = about 402  Sept. 5, 2003; about 469 June 7, 2004; about 21,500 Nov. 5, 2005; about 15,600 Nov 10, 2006

pharmacotyping: The individualized drug selection and dosage profiling by the health professional, based on patient's genotyping and haplotyping data for genes involved in pharmacodynamic and pharmacokinetic drug actions in the body.  Ioannis S. Vizirianakis, Challenges in Current Drug Delivery from the Potential Application of Pharmacogenomics and Personalized Medicine in Clinical Practice, Current Drug Delivery 1: 73- 80, 2004.  

pharmacovigilance: Drug safety & pharmacovigilance

phase zero, phase 0: Drug approvals glossary

phenotype standards: The characterization of phenotype is important for both the genotype- to- phenotype methods as well as the phenotype - to- genotype methods.  Phenotype is difficult to precisely define, but can be thought of as functional features of gene products, ranging in detail from molecular to the individual and population levels. Unfortunately, phenotype data is not as "digital" as sequence data, and so it is much more difficult to represent.  Nevertheless the success of pharmacogenomics depends on the establishment of standards for describing these data.  [Russ Altman "Challenges for Biomedical Informatics and Pharmacogenomics, Stanford Medical Informatics, c.2001] http://www-smi.stanford.edu/pubs/SMI_Reports/SMI-2001-0898.pdf 

phenotype-to-genotype:  Phenotype- to- genotype approaches take a different approach to pharmacogenomic discovery. Instead of identifying a family of genes in which to characterize genetic variations, investigators search for a phenotypic measure that shows significant variation.  This measure can be a clinical measure (such as the rate of clearance of a drug or the peak level of the drug for a given dose), a cellular measure (the rate of cellular uptake of a drug or the profile of gene expression) or a molecular measure (the enzymatic turnover rate of an enzyme or a substrate binding constant).  [Russ Altman "Challenges for Biomedical Informatics and Pharmacogenomics, Stanford Medical Informatics, c.2001] http://www-smi.stanford.edu/pubs/SMI_Reports/SMI-2001-0898.pdf  

Compare genotype- to- phenotype

placebo non-responders, placebo responders: Drug approvals glossary

polymorphisms, population genetics, population genomics: SNPs & genetic variations glossary 

polypharmacology: "dirty drugs" "drug promiscuity" How many drug targets are there?, John P Overington, et. al, Nature Reviews Drug Discovery, 2006 http://www.nature.com/nrd/journal/v5 

predictive ADME: Drug safety & pharmacovigilance

predictive medicine: See predictive pharmacogenomics:

predictive pharmacogenomics: Various approaches, including pharmacogenomics, that make up the emerging field of predictive medicine. These approaches allow clinicians to predict the risk of disease based on genetic testing, whether a particular therapy will be effective in a particular patient, the risk of an adverse effect, and the risk that a disease will progress in a particular manner. The technologies underlying these new approaches will change drug discovery and development, clinical trials, and diagnosis and treatment of disease. 

predictive proteomics: Proteomics categories

predictive safety testing consortium, predictive toxicogenomics, predictive toxicology: Drug safety & pharmacovigilance

predisposition: Molecular Medicine glossary

prodrugs: Pharmaceutical biology glossary

protein biomarkers: Biomarkers glossary 

PSUR Periodic Safety Update Report: Drug Approvals Glossary 

reverse pharmacology: [Masashi] Yanagisawa [Howard Hughes Medical Institute at the University of Texas Southwestern Medical Center at Dallas] went after these receptors because they are mostly "orphan receptors"— those with no known ligand. He suspected that the ligand for many of these receptors would turn out to be a peptide hormone. The computer research yielded about 50 sequences that the group felt were likely to be G protein- coupled receptors, and then set about using those receptors as bait to capture peptide hormones, their true quarry. This strategy is known in the field as "reverse pharmacology.   "In traditional pharmacological research, the hormone is identified first," Yanagisawa said. "That hormone is then used as a tag to pull out the receptor molecule. We're doing this in reverse."  ['Hormones found that influence appetite' HHMI News Feb. 20, 1998]  http://www.hhmi.org/news/orexin.html

Related terms: Pharmaceutical biology glossary

safety pharmacology: Drug safety & pharmacovigilance Glossary

SNPs: SNPs & genetic variations glossary Related terms:  Genetic variations glossary polymorphisms

side effect: Molecular medicine glossary

stratification: Drug approvals glossary

structural pharmacogenomics: Applying structural genomics toward understanding the consequences of  single nucleotide polymorphisms (SNPs). [CHI Summit Pharmacogenomics report].

surrogate endpoint, surrogate markers: Biomarkers glossary

susceptibility: Drug safety & pharmacovigilance

systems pharmacology: [Molecular Pharmacology} is combined with information about how effects of drugs on different organs and tissues are integrated to produce a therapeutic or toxic effect. Molecular and Systems Pharmacology, Emory University, 2006 http://biomed.emory.edu/programs/program_msp.cfm

NIGMS defines Integrative and Organ Systems Pharmacology (IOSP) as "pharmacological research using in vivo animal models or substantially intact organ systems that are able to display the integrated responses characteristic of the living organism that result from complex interactions between molecules, cells, and tissues." Such studies are important because isolated molecules and cells in vitro do not necessarily reflect the properties that they possess in vivo and cannot adequately reflect the function of intact tissues, organs, and organ systems. Speaking of Pharmacology, Integrative and Organ Systems Pharmacology: A New Initiative from the National Institute of General Medical Sciences [NIGMS], Peter C. Preusch, Molecular Interventions, 4: 72- 73, 2004 http://molinterv.aspetjournals.org/cgi/content/full/4/2/72

Bioinformatics and genomic approaches are suggesting new targets for study.  Hypotheses generated by in vitro studies or by computational biology and systems approaches to the integrative behavior of living systems need to be tested in the actual living organism.  The ability to develop genetically modified organisms has outstripped the ability to characterize the phenotypic changes in these organisms.  Interest is growing in behavioral and neurobiological phenomena that can only be studied in relatively intact systems and living organisms.  Discoveries in the areas of chemistry, genomics, and pharmacogenetics have accelerated the rate of research and have increased the demand for integrative and organ systems pharmacologists in the pharmaceutical industry.  Pharmacologists, experienced with in vivo models, form an integral part of every drug discovery and development project and are essential to assuring that only safe and efficacious lead compounds go forward to clinical trials.  New tools, such as microdialysis and imaging methods, have become available that enhance the collection efficiency and value of pharmacological data obtained in vivo.   NIGMS, SHORT COURSE: INTEGRATIVE AND ORGAN SYSTEMS PHARMACOLOGY, Apr 26, 2004, RFA-GM-05-006  http://grants.nih.gov/grants/guide/rfa-files/RFA-GM-05-006.html 

systems toxicology: Drug Safety & pharmacovigilance

target haplotype: Pharmacogenomics can reduce risk when used toward identifying the haplotypes of a target gene. For example. there are some beta agonists that have differential effects on haplotypes of the beta-1 receptor. In fact, some have absolutely no effect on at least one haplotype of the receptor. Uncovering such differences can reveal the degree to which a candidate compound will vary in its efficacy, and will help identify sub- populations that may benefit from the drug and others which may not benefit... In the few cases where a haplotype effect has been demonstrated, the discovery was accidental, occurring after the development of the drug. [CHI Summit Pharmacogenomics report]

Broader term: Sequencing glossary: haplotype

therapeutic engineering: Molecular Medicine glossary

therapeutic equivalency:  The relative equivalency in the efficacy of different modes of treatment of a disease, most often used to compare the efficacy of different pharmaceuticals to treat a given disease. MeSH, 1970

therapeutic index TI:  The ratio of the LD50 to the effective dose (ED50). How close is the dose which will kill 50% of the tested animals to the dose required for the desired effect in humans? If these two doses are very close to each other, then there is an obvious danger in using the drug with humans. [US Dept. of Justice in the matter of MDMA Scheduling, Docket No. 84- 48, 1986 www.streetdrugs.org] http://www.mninter.net/~publish/mdma.htm

Related terms: ED 50, LD 50 Lethal Dose 50.

tox-chips: Developed at NIEHS [National Institute for Environmental Health Sciences, US], which contains copies, or clones, of about 2,000 of the 80,000 genes in the human body. Millions of  cloned copies of each gene form a nearly invisible dot that is "arrayed" - hence the name - in a grid pattern on the glass slide. The [NIEHS Microarray] center [at Research Triangle Park, NC] also uses an even newer microarray, called the Human ToxChip, containing clusters of each of  12,000 different cloned genes.

Toxic substances produce changes that express, or turn on and off, genes, the center  scientists said, and the chips and the accompanying computer support used to read the slides, take advantage of that linkage.  Initially the new center is evaluating known toxins - for example, chemicals that are known to cause cancer and/or mutations - to build a library or database showing the typical genetic changes that these known poisons produce. Once they have "signature" profiles of how known toxins change genes, the scientists said, they can evaluate other chemicals for potential harm by comparing the gene changes they produce with those made by the known toxins. [NIEHS "Environmental Health Institute to Use Gene Chips to Evaluate Chemicals for Potential Harm to Humans" Feb. 29, 2001]  http://www.niehs.nih.gov/oc/news/toxchip.htm

Related terms: Microarrays glossary

toxicity biomarkers:  Biomarker glossary

toxicity testing: Assays & screening glossary

toxicogenomics: An approach to toxicology measuring how people's genomes respond to environmental stressors or toxicants.  Combines genome-wide gene expression profiling with protein expression patterns using bioinformatics to understand the role of gene-environment interactions in disease, understand how chemicals affect the expression of genes, characterize normal genetic and metabolic pathways, and learn how disease occurs when these pathways malfunction. CHA Cambridge Healthtech Advisors, Clinical Genomics: The Impact of Genomics on Clinical Trials and Medical Practice report, 2004

The study of the structure and output of the genome as it responds to adverse xenobiotic exposure. Ulrich RG. The toxicogenomics of nuclear receptor agonists. Current Opinion in Chemical Biology 7(4) 505- 510, August 2003

An emerging discipline that combines expertise in toxicology, genetics, molecular biology, and environmental health to elucidate the response of living organisms to stressful environments. Of particular interest to scientists in the field is the advancement of high- throughput and computational methodologies to study gene and protein expression at all levels, and the application of this knowledge to enhance our understanding and therapeutic management of human illnesses. The promise of toxicogenomics will become a reality as we begin to fully understand how subtle variations in the environment give rise to altered phenotypes that compromise organ and system functions.  NIEHS, EHP Toxicogenomics, Jan. 2003  http://ehp.niehs.nih.gov/txg/docs/2003/111-1T/eds/eds.html

The ability to predict the toxic effects of potential new drugs is crucial to prioritizing compound pipelines and eliminating costly failures in drug development. Toxicogenomics, which deals primarily with the effects of compounds on gene expression patterns in target cells or tissues, is emerging as a key approach in screening new drug candidates because it may reveal genetic signatures that can be used to predict toxicity in these compounds. [CHI report Toxicogenomics: The Promise of Safer, Smarter Drug Development  2002]

The hybridization of functional genomics and molecular toxicology. [Leming Shi “DNA Microarrays” 1998-2002] http://www.gene-chips.com/

From toxicology + genomics

Google = about 9,650 Sept. 10, 2003; about 27,700 June 7, 2004, about 1,050 Aug. 15, 2005, about 689,000 Oct. 25, 2006, about 567,000 Apr 5, 2007

National Center for Toxicogenomics, NIEHS, US http://www.niehs.nih.gov/nct/home.htm

toxicoinformatics: An emerging scientific discipline that integrates approaches from multidisciplinary fields of bioinformatics, chemoinformatics, computational toxicology, informatics technologies and physiologically- based pharmacokinetic modeling with the objective of knowledge discovery and the elucidation of mechanisms of toxicity. NCTR's Center for Toxicoinformatics, National Center for Toxicological Research, FDA, 2003  http://www.fda.gov/nctr/science/centers/toxicoinformatics/

Google = about 161 Nov. 21, 2003; about 746 Nov 10, 2006, about 775 Apr 4, 2007

toxicokinetics: Process of the uptake of potentially toxic substances by the body, the biotransformation they undergo, the distribution of the substances and their metabolites in the tissues, and the elimination of the substances and their metabolites from the body. Both the amounts and the concentrations of the substances are studied. The term has essentially the same meaning as pharmacokinetics, but the latter term should be restricted to the study of pharmaceutical substances. [IUPAC Compendium]

IUPAC, Glossary for toxicokinetics of chemicals, 365 terms. http://www.iupac.org/publications/pac/2004/pdf/7605x1033.pdf  Published Pure & Applied Chemistry 76 (5): 1033-1082, 2004

See also under pharmacokinetics.

toxicology: Can be described, according to a U.S. National Library of Medicine online tutorial, as "the study of the adverse effects of chemicals or physical agents on living organisms." Such effects run the gamut from immediate death to subtle effects that manifest only months or years after exposure. Toxic substances may affect various levels of the body, such as a particular organ, cell type, or biomolecule. [CHI report Toxicogenomics: The Promise of Safer, Smarter Drug Development,  2002]

toxicoproteomics: Toxicoproteomics is the use of global protein expression technologies to better understand environmental and genetic factors, both in episodes of acute exposure to toxicants and in the long-term development of disease. Integrating transcript, protein, and toxicology data is a major objective of the field of toxicogenomics. KB Tomer, DB Merrick, Toxicoproteomics: a parallel approach to identifying biomarkers Environmental Health Perspectives 2003 Aug;111(11): A578- 579.

Google = about 19,100 Nov 5, 2005; about 16,400 Nov 10, 2006, about 13,100 Apr. 5, 2006

toxigenomics: A compendium of gene expression data enhanced by complete proteomic analysis will enable investigators to probe the complexities of the mechanisms of normal genetic and metabolic pathways, and subsequently, to learn how disease occurs when these pathways malfunction. When combined with information on gene/protein groups, functional pathways and networks, and human genetic polymorphisms, these data will confer new knowledge of gene-environment interactions and human health risks. Homepage, NCTR National Center for Toxigenomics, NIEHS National Institute of Environmental Health Sciences, 2005 http://www.niehs.nih.gov/nct/home.htm

Google = about 3,220 Nov 5, 2005; about 1,930 Nov 10, 2006, about 2,060 Apr. 6,5. 2007

toxins:  Integrated Risk Information Systems, US Environmental Protection Agency http://www.epa.gov/iriswebp/iris/index.html

transcriptomics: In the context of toxicology studies, involves assessing changes in transcription initiation, processing, and degradation after chemical exposure using glass and membrane DNA microarrays and low- output tools, such as ribonuclease protection assays and real-time PCR.

See also -Omes & -omics glossary transcriptomics

VGDS: Voluntary Genomic Data Submission, FDA, Draft Guidance for Industry Pharmacogenomic Data Submissions, Federal Register 68 (213): 62461- 62463, 62461-62463, Nov. 4, 2003. http://www.fda.gov/OHRMS/DOCKETS/98fr/03-27646.htm

valid biomarker:  Biomarkers glossary

validation - drug response phenotype: See under drug response phenotype.

Voluntary Genomic Data Submissions VGDS: The designation  for pharmacogenomic data submitted voluntarily to the FDA. Guidance for Industry, Pharmacogenomic Data Submissions CDER, CBER, CDRH, FDA,  March 2005  Non-binding recommendations.  http://www.fda.gov/cber/gdlns/pharmdtasub.pdf 

xenobiotic: A key term in toxicology (means foreign substance) is used to identify clearly toxic substances, such as lead, or beneficial therapeutic agents, many of which become toxic at elevated dosage levels. [CHI report Toxicogenomics: The Promise of Safer, Smarter Drug Development

A compound foreign to an organism. From the Greek xenox = foreign, bios = life. [IUPAC Medicinal Chemistry] Principal xenobiotics include drugs, carcinogens and various compounds that have been introduced into the environment by artificial means. [IUPAC Bioinorganic]

Drugs can generally be characterized as having a nontoxic or beneficial dose, a toxic dose, and a lethal dose. For example, two 650 mg aspirin tablets are usually beneficial, while seven tablets are usually toxic, and 60 tablets can be lethal. Similarly, a blood alcohol level of 0.05% is generally nontoxic, while 0.10% is toxic, and 0.50% can be lethal. However, it is important to note that such levels are averages, and individuals can manifest significant departures from the mean, depending on expression levels of key metabolic enzymes and the presence of polymorphisms that degrade or enhance the activity of these enzymes.

Bibliography
Insight pharma  Advances in Lead Optimization Accelerating Drug Discovery and Development  report, 2003
CHI Predictive Pharmacogenomics report, 2002.
CHI Successful Pharmacogenomics Business Models report  2003 
CHI report Toxicogenomics: The Promise of Safer, Smarter Drug Development,  2002
Guidance for Industry, Pharmacogenomic Data Submissions CDER, CBER, CDRH, FDA,  March 2005  Non-binding recommendations.  http://www.fda.gov/cber/gdlns/pharmdtasub.pdf 
Glossary of IRIS [Integrated Risk Information System] Terms, Environmental Protection Agency, 1999, 130+ terms http://www.epa.gov/iris/gloss8.htm
IUPAC, Glossary for toxicokinetics of chemicals, 365 terms. http://www.iupac.org/publications/pac/2004/pdf/7605x1033.pdf  Published Pure & Applied Chemistry 76 (5): 1033-1082, 2004
IUPAC International Union of Pure and Applied Chemistry, GLOSSARY FOR CHEMISTS OF TERMS USED IN TOXICOLOGY Clinical Chemistry Division, Commission on Toxicology, Recommendations. Pure and Appl. Chem., 65 (9):  2003- 2122, 1993. 1200+ definitions.    http://www.iupac.org/reports/1993/6509duffus/index.html30 plus definitions
Glossary, Toxicogenomics Research Consortium, NIEHS, US, 2003, 30 plus definitions http://www.niehs.nih.gov/dert/trc/glossary.htm  
Pelikan, Edward W.  Glossary of terms and symbols used in pharmacology, Boston University Medical School, US, 1993- 1998, about 300 definitions. http://www.bumc.bu.edu/www/busm/pharmacology/Programmed/framedGlossary.html
Pharmacogenomics supplement, Nature Biotechnology 16, Oct. 1998  http://www.nature.com/cgi-taf/dynapage.taf?file=/nbt/journal/v16/n2s/index.html

Alpha glossary index

How to look for other unfamiliar  terms

IUPAC definitions are reprinted with the permission of the International Union of Pure and Applied Chemistry.