Altruistic cell and tissue donors are my heroes. Without them there would be no “cell” in stem cell research. Individuals have voluntarily donated skin, blood, bone marrow and embryos remaining after infertility treatment to CIRM-funded researchers. Researchers have transformed these donations into stem cell lines. A stem cell line is a group of identical cells that can be grown and multiplied in a lab dish. Stem cell lines derived from patient donors are enabling scientists to better understand how their particular diseases develops and help identify potential drug and cell therapies.
To accelerate disease research and
therapy development, CIRM is creating a clearinghouse designed to make high-quality
patient stem cell lines available to scientists who need them (here's more about that banking initiative). This stem cell repository will distribute
the lines to researchers around the world.
Before embarking on this initiative,
CIRM’s Medical and Ethical Standards Working Group, which I oversee, put considerable thought into
procedures for obtaining cells and tissue and how best to keep patient donors
appraised of research developments. The crux of their recommendations is
embodied in a model informed consent document, which is the topic of a recent paper I recently wrote with my colleague
Kelly Sheppard.
This informed consent document is what
we’re encouraging the people who collect cells from patients to use to inform
donors about the nature and purpose of research and describe any risk or
benefit to the participant. One consideration for donor informed consent is the
potential for research to result in findings that are medically relevant to the
donor. For example, the CIRM repository is designed to support the development
of drug therapies for diseases affecting patient donors. If that research
results in a possible medical benefit, we argue that those findings should be available
to the donor and ideally the population with the disease.
Given the potential for iPS cells to support translational research, one should not preclude the ability to recontact donors. Based on this reasoning, the consent form does disclose that the identification of significant new findings may be the basis for recontact. CIRM intends to evaluate the efficacy of this approach to inform ongoing research efforts.
However, the Standards Working Group
recognized that there is a delicate balance that must be struck between keeping
lines of communication open without creating expectations that cannot be met. Suggesting
to donors that beneficial results may emerge can contribute to a “therapeutic
misconception” – the belief that research is designed to directly help the
patient.
The working group endorsed an approach
that very explicitly tells donors that the research is not designed to help
them directly, but simultaneously acknowledges that cells will be used in
research intended to develop potential commercial therapies.
Thus far, researchers have been
receptive to this approach, but questions remain as to the most effective ways
to compile and disseminate research findings. As with may challenges at CIRM,
this is a work in progress, but one we are firmly committed to finding
effective solutions for.
G.L.
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