The United States Food and Drug Administration's Investigational New Drug (IND) program is the means by which a pharmaceutical company obtains permission to start human clinical trials and to ship an experimental drug across state lines (usually to clinical investigators) before a marketing application for the drug has been approved. Regulations are primarily at . Similar procedures are followed in the European Union, Japan, and Canada.
Commercial INDs are filed by companies to obtain marketing approval for a new drug.
Research or investigator INDs are non-commercial INDs filed by researchers to study an unapproved drug or to study an approved drug for a new indication or in a new patient population.
Emergency Use INDs, also called compassionate use or single-patient INDs, are filed for emergency use of an unapproved drug when the clinical situation does not allow sufficient time to submit an IND in accordance with 21 CFR §§ 312.23, 312.24. These are most commonly used for life-threatening conditions for which there is no standard treatment.
Treatment INDs are filed to make a drug available for the treatment of serious or immediately life-threatening conditions prior to FDA approval. Serious diseases or conditions are stroke, schizophrenia, rheumatoid arthritis, osteoarthritis, chronic depression, seizures, Alzheimer's dementia, amyotrophic lateral sclerosis (ALS), and narcolepsy.
Screening INDs are filed for multiple, closely related compounds in order to screen for the preferred compounds or formulations. The preferred compound can then be developed under a separate IND. Used for screening different salts, esters and other drug derivatives that are chemically different, but pharmacodynamically similar.
The IND application may be divided into the following categories:
Preclinical testing consists of animal pharmacology and toxicology studies to assess whether the drug is safe for testing in humans. Also included are any previous experience with the drug in humans (often foreign use).
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Drug development is the process of bringing a new pharmaceutical drug to the market once a lead compound has been identified through the process of drug discovery. It includes preclinical research on microorganisms and animals, filing for regulatory status, such as via the United States Food and Drug Administration for an investigational new drug to initiate clinical trials on humans, and may include the step of obtaining regulatory approval with a new drug application to market the drug.
Clinical trials are prospective biomedical or behavioral research studies on human participants designed to answer specific questions about biomedical or behavioral interventions, including new treatments (such as novel vaccines, drugs, dietary choices, dietary supplements, and medical devices) and known interventions that warrant further study and comparison. Clinical trials generate data on dosage, safety and efficacy. They are conducted only after they have received health authority/ethics committee approval in the country where approval of the therapy is sought.
Explores causality, clinical studies, new drug evaluation, confounding factors, and data analysis methods.
Explores the selection and rationale of preclinical animal models in drug development, emphasizing the 10 to 15-year path to a marketed small-molecule drug.
Explores the historical aspects of drug development, regulatory agencies, and ethical principles in pharmacology, emphasizing the importance of informed consent and human subject protection.
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