The practice of research on humans is, of course, long standing. Even a quick review of medical history reveals countless examples of this. However, the formal idea and regulation of āhuman subjects researchā is recent and was, like many such reforms, generated by a controversy. Serious ethical issues arising from the Tuskegee syphilis experiments in 1972 caused a moral outrage [1ā3]. Congress was moved to act and in 1974 passed the National Research Act, which established the National Commission for the Protection of Human Subjects of Biomedical and Behavioral Research. From 1974 to 1978, the commission issued several reports related to biomedical and behavioral research with human subjects, culminating in 1979 with their final, formal report known as the Belmont Report, named after the conference room in which they met [4]. The Belmont Report summarized the basic ethical principles and corresponding guidelines that the commission recognized for the conduct of human experimentation. Principles and codes addressing the conduct of human subject research have existed in various forms and have been followed by a variety of organizations since the mid 1940s, but the Belmont Report has arguably had the greatest effect on human subject research protections in the United States.
The Belmont Reportās ethical principles and guidelines address key areas of concern following the aforementioned Tuskegee syphilis study. Officially known as the Tuskegee Study of Untreated Syphilis in the Negro Male, the study was sponsored by the United States Public Health Service and was conducted between 1932 and 1972. As the title suggests, the study aimed to follow the progression of untreated syphilis in the human body with a target study population of black males. Subjects infected with syphilis, and some who were not infected, were recruited into the study with the promise of medical care, free food, and burial insurance. The subjects were not informed of the true nature of the procedures to which they agreed and were told only that they were being treated for ābad bloodā [1ā3]. The researchers deliberately withheld penicillin and other treatments that were developed during the course of the study from the subjects so they could monitor and document the progression of the disease. As both a direct and indirect consequence, subjects experienced psychological/cognitive distress, physical deficiencies, and even death. Further, the disease may well have been transmitted to sexual partners and children born to research participants.
The core principles and practices identified in the Belmont Report were central to the public outcry regarding the overall conduct of this research and the treatment of the research subjects: patient autonomy, lack of informed consent, the direct harm done to subjects due to withholding medical care, and the unequal/inequitable distribution of research risks on one segment of the population. The Belmont Report identified three key ethical principles for the practice of human subject research: respect for persons, beneficence, and justice. Emerging from these three principles were three guidelines for their implementation or actualization: informed consent, assessment of risk and benefit, and equitable sharing of the burdens and benefits of research [4,5].
Respect for persons specifically addresses patient autonomy and requires that, as autonomous beings, subjects should be afforded the right to be informed of the procedures being performed in the research in which they are asked to participate and that their participation be voluntary. The Belmont Report describes an autonomous human being as one capable of self-determination and consideration of a variety of choices based on information provided to them. The full application of this principle, through informed consent, involves the provision of all relevant information, the confirmation that this information is comprehended and understood, and the ensuring of voluntary participation, or not, based on the potential subjectās choice.
Just as the autonomy of each person is recognized, the commission also recognized the necessity of protections for persons with diminished autonomy. Individuals who are incapacitated, ill, mentally disabled, immature, or are otherwise vulnerable to undue influence or coercion may have diminished autonomy requiring special care when including them in researchāknown as āvulnerable populations.ā This care involves ongoing evaluation of their awareness of the consequences of participation, assessment of the subjectsā voluntariness, and protections to prevent coercion. It is the responsibility of the researchers to ensure patient autonomy is preserved and potentially to remove a subject from research if this cannot be established.
Beneficence refers to the prospective risks and harms that a research subject may face by participating in a study with the prospective benefits that may arise from the research for either the subject or, more generally, society with the development of new knowledge. For the Belmont committee, it addressed the direct harm done to the subjects in the Tuskegee syphilis study. By withholding medical care, specifically penicillin, the participants in this study were denied care that otherwise would have been available to them were they not research subjects. Penicillin was established as the standard treatment for syphilis in 1947, approximately 15 years after the initiation of this study; however, the subjects were denied this treatment, and the study continued for another 25 years. For these subjects, participation was actually maleficent, which is contrary to the very precepts of the practice of medicine and the principle of beneficence. The Belmont Report extends this precept of medicine into human subject research with the two prongs of beneficence: 1) to do no harm to subjects; and 2) if harm/risk is unavoidable, to maximize benefit while minimizing possible harm. The report acknowledged that individual research subjects may not directly benefit from their participation, but their inclusion in the study must still be justifiable in consideration of the benefits to be gained and possible risks. An evaluation should be made of the ratio of potential risks to potential benefits. There is, of course, some tension between this and the principle implicit in respect for persons. Respect for persons and autonomy require that researchers do not treat subjects as āmeansā to an āend,ā but the assessment of risks/harm against possible benefits implies some dimension of this, especially when there is no direct benefit for the subjects and the only benefits are advancement of knowledge. The practice of informed consent, however, is designed to mitigate this tension.
The principle of justice addresses the unequal distribution of the burdens and risks of participation in research on subject populations in general, as illustrated by the inequitable inclusion of only the black male population in the Tuskegee syphilis study. This principle seeks to address the fairness of the distribution of research risks and possible benefits and to prevent injustice. There is no question that the rural black male population was exploited and manipulated in this study. Similarly, prisoners, the poor, and institutionalized individuals have been exploited in various other research studies throughou...