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An institutional review board/independent ethics committee (IRB/IEC) is an appropriately constituted group that has been formally designated to review and monitor biomedical and behavioral research involving human subjects. In accordance with Food and Drug Administration (FDA) and HHS regulations, an IRB has the authority to approve, require modifications in (to secure approval), or disapprove research. An IRB performs critical oversight functions for research conducted on human subjects that are scientific, ethical, and regulatory.

In the United States, IRBs are mandated by the Research Act of 1974, which defines IRBs and requires them for all research that receives funding, directly or indirectly, from what was the Department of Health, Education, and Welfare at the time, and is now the Department of Health and Human Services (HHS). IRBs are themselves regulated by the Office for Human Research Protections (OHRP) within HSS. IRBs were developed in direct response to research abuses earlier in the twentieth century. Two of the most notorious of these abuses were the experiments of Nazi physicians that became a focus of the post-World War II Nuremberg Trials, and the Tuskegee Syphilis Study, an unethical and scientifically unjustifiable project conducted between 1932 and 1972 by the U.S. Public Health Service on poor, illiterate black men in rural Alabama.

Naming and Composition

"IRB" is a generic term used by the FDA and HHS. Each institution that establishes an IRB may use whatever name it chooses. Regardless of the name chosen, the IRB is subject to the FDA's IRB regulations when studies of FDA-regulated products are reviewed and approved.

Originally, IRBs were committees at academic institutions and medical facilities to monitor research studies involving human subjects, primarily to minimize or avoid ethical problems.

Today many IRB reviews are done by for-profit organizations. These are known as independent or commercial IRBs. The responsibilities of these IRBs are identical to those based at academic or medical institutions, and they are governed by the same federal regulations.

IRB membership is strictly mandated by the Code of Federal Regulations (45 CFR 46):

ยง46.107 IRB membership.

(a) Each IRB shall have at least five members, with varying backgrounds to promote complete and adequate review of research activities commonly conducted by the institution. The IRB shall be sufficiently qualified through the experience and expertise of its members, and the diversity of the members, including consideration of race, gender, and cultural backgrounds and sensitivity to such issues as community attitudes, to promote respect for its advice and counsel in safeguarding the rights and welfare of human subjects. In addition to possessing the professional competence necessary to review specific research activities, the IRB shall be able to ascertain the acceptability of proposed research in terms of institutional commitments and regulations, applicable law, and standards of professional conduct and practice. The IRB shall therefore include persons knowledgeable in these areas. If an IRB regularly reviews research that involves a vulnerable category of subjects, such as children, prisoners, pregnant women, or handicapped or mentally disabled persons, consideration shall be given to the inclusion of one or more individuals who are knowledgeable about and experienced in working with these subjects.

(b) Every nondiscriminatory effort will be made to ensure that no IRB consists entirely of men or entirely of women, including the institution's consideration of qualified persons of both sexes, so long as no selection is made to the IRB on the basis of gender. No IRB may consist entirely of members of one profession.

(c) Each IRB shall include at least one member whose primary concerns are in scientific areas and at least one member whose primary concerns are in nonscientific areas.

(d) Each IRB shall include at least one member who is not otherwise affiliated with the institution and who is not part of the immediate family of a person who is affiliated with the institution.

(e) No IRB may have a member participate in the IRB's initial or continuing review of any project in which the member has a conflicting interest, except to provide information requested by the IRB.

(f) An IRB may, in its discretion, invite individuals with competence in special areas to assist in the review of issues which require expertise beyond or in addition to that available on the IRB. These individuals may not vote with the IRB.

Membership is stipulated in this way (including both scientists with varying backgrounds and non-scientists) in order to promote thorough and unbiased scientific review of protocols by the IRB as well as to foster sensitivity to the special needs and concerns of the targeted subject pool.

Purpose and Use

IRBs are most commonly used for studies in the fields of medicine and psychology. Such studies may be clinical trials of new drugs or devices, they may be studies of personal or social behaviour, or they may be studies of how health care is delivered and might be improved.

The purpose of an IRB review is to assure, both in advance and by periodic review, that appropriate steps are taken to protect the rights and welfare of humans participating as subjects in a research study. To accomplish this purpose, IRBs review research protocols and related materials (e.g., informed consent documents and investigator brochures) to ensure protection of the rights and welfare of human subjects of research. The chief objectives of every IRB protocol review are to assess the scientific merit of the research and its methods, to promote fully informed and voluntary participation by prospective subjects who are themselves capable of making such choices (or, if that is not possible, informed permission given by a suitable proxy) and to maximize the safety of subjects once they are enrolled in the project.

Responsibilities

According to ICH GCP an IRB/IEC should safeguard the rights, safety, and well-being of all trial subjects. Special attention should be paid to trials that may include vulnerable subjects, such as pregnant women, children, prisoners, the elderly, or persons with diminished comprehension. Furthermore, in adherence to the ethical principles of beneficence, respect for persons, and justice, the IRB only approves research for which the risks to subjects are balanced by potential benefits to society, for which there is a bona fide informed consent process for participants, and for which selection of subjects affords opportunities to participate for all eligible populations.

The IRB/IEC should obtain the following documents:

trial protocol(s)/amendment(s), written informed consent form(s) and consent form updates that the investigator proposes for use in the trial, subject recruitment procedures (e.g., advertisements), written information to be provided to subjects, Investigator's Brochure (IB), available safety information, information about payments and compensation available to subjects, the investigator's current curriculum vitae and/or other documentation evidencing qualifications, and any other documents that the IRB/IEC may need to fulfill its responsibilities.

The IRB/IEC should review a proposed clinical trial within a reasonable time and document its views in writing, clearly identifying the trial, the documents reviewed and the dates for the following:

  • approval/favourable opinion;
  • modifications required prior to its approval/favourable opinion;
  • disapproval/negative opinion; and
  • termination/suspension of any prior approval/favourable opinion.

According to ICH GCP the IRB/IEC should consider the qualifications of the investigator for the proposed trial, as documented by a current curriculum vitae and/or by any other relevant documentation the IRB/IEC requests.

According to ICH GCP the IRB/IEC should conduct continuing review of each ongoing trial at intervals appropriate to the degree of risk to human subjects, but at least once per year.

The IRB/IEC may request more information than is outlined in paragraph 4.8.10 be given to subjects when, in the judgment of the IRB/IEC, the additional information would add meaningfully to the protection of the rights, safety and/or well-being of the subjects. When a non-therapeutic trial is to be carried out with the consent of the subject's legally acceptable representative (see 4.8.12, 4.8.14), the IRB/IEC should determine that the proposed protocol and/or other document(s) adequately addresses relevant ethical concerns and meets applicable regulatory requirements for such trials. Where the protocol indicates that prior consent of the trial subject or the subject's legally acceptable representative is not possible (see 4.8.15), the IRB/IEC should determine that the proposed protocol and/or other document(s) adequately addresses relevant ethical concerns and meets applicable regulatory requirements for such trials (i.e., in emergency situations). The IRB/IEC should review both the amount and method of payment to subjects to assure that neither presents problems of coercion or undue influence on the trial subjects. Payments to a subject should be prorated and not wholly contingent on completion of the trial by the subject.

According to ICH GCP (good clinical practice) the IRB/IEC should ensure that information regarding payment to subjects, including the methods, amounts, and schedule of payment to trial subjects, is set forth in the written informed consent form and any other written information to be provided to subjects. The way payment will be prorated should be specified.

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''This article incorporates text from the U.S. Food and Drug Administration, which is in the public domain.

experimental design | pharmacology | clinical research

 

This article is licensed under the GNU Free Documentation License. It uses material from the "Institutional Review Board".

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