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The NIH "Points to Consider" and the limits of human gene therapy.

In this essay, I examine the sources and reach of the NIH "Points to Consider." These guidelines are based on normative considerations inherited from two sets of science policy deliberations that took place in the United States during the 1970s: the discussion of research with human subjects and the recombinant DNA debate. The combined lessons of those deliberations provide six criteria by which to evaluate human gene therapy proposals. While these criteria could be used to reject proposals to attempt germ-line gene therapy or enhancement engineering today, they provide no principled basis for publicly proscribing the development of these forms of genetic intervention. Instead, they will ultimately lead us to approach the moral limits of gene therapy as a professional policy question about the goals of medicine, rather than as a social policy question about the public good.

Advisory Committees↗

Ethical issues in psychiatric genetics research: points to consider.

RATIONALE: Psychiatric genetics research warrants ethical consideration because of the complex nature of conducting research among affected families. When researchers identify compelling reasons to offer susceptibility data to participants, they face challenges to identify an infrastructure to convey information and means to ensure that undue research risks are not encountered. OBJECTIVES: To outline ethical issues in conducting research in psychiatric genetics with the aim of considering how the identification of susceptibility genes for psychiatric disorders may shape future research; to provide points to consider for conducting psychiatric genetics research with the anticipation of offering susceptibility data to participants. METHODS: Ethical issues that arise in psychiatric genetics research conducted with affected families are discussed along with reasons susceptibility data may be offered to participants in the future. RESULTS: We suggest that all researchers, even those who have no intention of offering susceptibility genetic results, consider how advances in knowledge might affect the provision of research findings. CONCLUSIONS: Existing ethical issues are likely to become even more pressing as susceptibility genes are identified for major psychiatric disorders. It behooves researchers, mental health professionals, and geneticists to consider how to use our growing scientific knowledge to best help participants in ways that anticipate and prevent, rather than respond to, ethical conflicts.

Confidentiality↗

"Points to consider" regarding safety assessment of biotechnology-derived pharmaceuticals in non-clinical studies (English translation).

Regulatory and industrial scientists collaborated to publish a "points to consider" document regarding the safety assessment of biotechnology-derived pharmaceuticals in non-clinical studies in 2002 (Pharmaceutical Non-clinical Investigation Group, 2002). The collaboration team intended to clarify the interpretation of ICH-S6 guideline and furthermore share recent Japanese practices on this matter. However, the document was written in Japanese. Thus, we share here an English translation of the document so that non-native Japanese correctly understand the contents.

Animals↗

Antisense therapeutics in oncology: points to consider in their clinical evaluation.

Novel therapeutics in oncology stem from a rational design of drugs targeting selective pathways that stimulate and maintain tumor cell growth. Many of these agents are cytostatic in action and also have a limited toxicity profile. However, some can be cytotoxic if they successfully modulate molecular pathways of apoptosis, such as bcl-2. This article discusses points to consider in the design of one class of cytostatic agents, antisense therapy. Our purpose is to stimulate designs that answer the question specifically with regard to proof-of-concept, and the concepts proposed should be viewed as ideas in development rather than firm recommendations.

Apoptosis↗

Rewriting the "points to consider": the ethical impact of guidance document language.

Human gene transfer research has been under way for nearly 10 years, with few clinically significant results to date; yet public and professional expectations still run high. Exaggerated expectations and misconceptions about gene transfer research are attributable in part to the terminology used to describe this research, which is misleading but, in the absence of more precise language, is commonly used. In particular, use of the term "gene therapy" to describe gene transfer research and use of the term "patient" in place of "subject" tend to cause both professionals and the public to confuse research with proven effective treatment. Investigators preparing to engage in human gene transfer research must use the NIH guidance document, "The Points to Consider in the Design and Submission of Protocols for the Transfer of Recombinant DNA Molecules into the Genome of One or More Human Subjects," written by the Recombinant DNA Advisory Committee, to prepare for the submission of a research protocol. Several corrections in the terminology employed by this guidance document could help to avoid misconceptions about gene transfer research and clarify both the promise and the limits of the research enterprise for investigators and subjects.

Ethics, Medical↗

Returning genetic research results to individuals: points-to-consider.

This paper is intended to stimulate debate amongst stakeholders in the international research community on the topic of returning individual genetic research results to study participants. Pharmacogenetics and disease genetics studies are becoming increasingly prevalent, leading to a growing body of information on genetic associations for drug responsiveness and disease susceptibility with the potential to improve health care. Much of these data are presently characterized as exploratory (non-validated or hypothesis-generating). There is, however, a trend for research participants to be permitted access to their personal data if they so choose. Researchers, sponsors, patient advocacy groups, ethics committees and regulatory authorities are consequently confronting the issue of whether, and how, study participants might receive their individual results. Noted international ethico-legal guidelines and public policy positions in Europe and the United States are reviewed for background. The authors offer 'Points-to-Consider' regarding returning results in the context of drug development trials based on their knowledge and experience. Theses considerations include: the clinical relevance of data, laboratory qualifications, informed consent procedures, confidentiality of medical information and the competency of persons providing results to participants. The discussion is framed as a benefit-to-risk assessment to balance the potential positive versus negative consequences to participants, while maintaining the integrity and feasibility of conducting genetic research studies.

Access to Information↗

FDA points-to-consider documents: the need for dietary control for the reduction of experimental variability within animal assays and the use of dietary restriction to achieve dietary control.

Standard protocols for conducting chronic toxicity and carcinogenicity studies have been refined over the years to carefully control for many variables. Nevertheless, over the last 2 decades, there has been a steady increase in variability, a decrease in survival, an increase in tumor incidence rates, and an increase in the average body weight of control animals among the various rodent species and strains used for toxicity testing. These observations have prompted an evaluation of chronic study designs to determine what factor(s) may be responsible for such confounding changes. Ad libitum feeding and the selection of successful breeders with rapid offspring growth is believed to be at least partially responsible for the heavier, obese rodents with which many laboratories are coping today. As a result of these changes, some studies used for the evaluation of safety have been deemed inconclusive or inadequate for regulatory purposes and either additional supportive studies have been requested and/or studies per se have been repeated. Research on the molecular mechanisms of caloric restriction and agent-induced toxicity at the Food and Drug Administration (FDA) National Center for Toxicological Research stimulated the first international conference on the biological effects of dietary restriction in 1989; this was followed in 1993 by an FDA workshop exploring the utility of dietary restriction in controlling reduced survival in chronic tests and an international conference in 1994 exploring the implications for the regulatory community of using dietary restriction in toxicity and carcinogenicity studies used in support of a sponsor's submission or in risk assessments. The outcome of that conference was the FDA's commitment to develop Points-to-Consider documents that address the issue of dietary control in chronic toxicity and carcinogenicity studies.

Animal Feed↗

Benchmark dose analysis of developmental toxicity in rats exposed to boric acid.

Developmental toxicity risk assessment has typically relied on the estimation of reference doses or reference concentrations based on the use of no-observed-adverse-effect levels (NOAELs) divided by uncertainty factors. The benchmark dose (BMD) approach has been proposed as an alternative basis for reference value calculations. In this analysis of the developmental toxicity observed in rats exposed to boric acid in their diet, BMD analyses have been conducted using two existing studies. By considering various end points (rib XIII effects, variations of the first lumbar rib, and fetal weight changes) and various modeling approaches for those end points, the best approach for incorporating all of the information available from those studies could be determined. Particular emphasis has been placed on methods for combining data across studies and for combining potentially related effects (on rib XIII and on the first lumbar rib). The issues of study and end point selection are ones that will arise frequently in the process of estimating reference values. This example of boric acid suggests that the BMD approach provides a reasonable basis for appropriately comparing and combining study data, as opposed to ad hoc combinations of study results. Moreover, it is shown that the BMD approach can be used with combinations of end points considered to differ in severity. In this case, the preferred approach involved combining the data from the two studies, which were similarly designed and were conducted in the same laboratory, to calculate BMDs that were more accurate and more precise than those that could be derived from either study alone. It was determined that decreased fetal body weight provided the best basis for BMD calculations; BMDs calculated for fetal body weight changes were less than those for all other relevant end points. The appropriate BMD to use as the basis for boric acid reference dose calculation appears to be 59 mg/kg/day, which is very similar to the NOAEL observed in the second of the two studies (55 mg/kg/day). Although the first study failed to establish a NOAEL, the BMD approach could have been applied to that study, thereby avoiding the need for a repeat study. Similar BMD results were obtained in both studies.

Animals↗

Analysis of the spatial organization of the cell: a statistical method for revealing the non-random location of an organelle.

A method is proposed for testing the randomness of the location of an organelle within a given area of a cell section. The approach chosen is to analyse the distance between this organelle and a specific point considered as a point of reference. The method consists of converting this distance into the ratio of one given area to another and comparing the statistical distribution of the converted values to the uniform distribution. This method has the advantage of being valid in the absence of any restrictive assumptions concerning the heterogeneity in size and/or shape of the collection of sections sampled. Detailed examples are given to illustrate the practical use of the method, and its possible extensions are discussed.

Cell Nucleolus↗

Have more confidence in your stability data: two points to consider.

Simple statistical, mathematical, and chemical arguments are presented that will justify performing all stability studies using a different approach than is currently practiced in the pharmaceutical and IVD industries. The use of multi time point stability studies is in most cases a waste of resources that could be better spent on endpoint studies at less cost and a significant increase in the quality of the data.

Data Interpretation, Statistical↗