Rebecca L. Walker
University of North Carolina at Chapel Hill
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Featured researches published by Rebecca L. Walker.
American Journal of Bioethics | 2015
Gabriel Lázaro-Muñoz; John M. Conley; Arlene M. Davis; Marcia Van Riper; Rebecca L. Walker; Eric T. Juengst
Advances in genomics have led to calls for developing population-based preventive genomic sequencing (PGS) programs with the goal of identifying genetic health risks in adults without known risk factors. One critical issue for minimizing the harms and maximizing the benefits of PGS is determining the kind and degree of control individuals should have over the generation, use, and handling of their genomic information. In this article we examine whether PGS programs should offer individuals the opportunity to selectively opt out of the sequencing or analysis of specific genomic conditions (the menu approach) or whether PGS should be implemented using an all-or-nothing panel approach. We conclude that any responsible scale-up of PGS will require a menu approach that may seem impractical to some, but that draws its justification from a rich mix of normative, legal, and practical considerations.
Bioethics | 2014
Rebecca L. Walker; Clair Morrissey
While bioethics as a field has concerned itself with methodological issues since the early years, there has been no systematic examination of how ethics is incorporated into research on the Ethical, Legal and Social Implications (ELSI) of the Human Genome Project. Yet ELSI research may bear a particular burden of investigating and substantiating its methods given public funding, an explicitly cross-disciplinary approach, and the perceived significance of adequate responsiveness to advances in genomics. We undertook a qualitative content analysis of a sample of ELSI publications appearing between 2003 and 2008 with the aim of better understanding the methods, aims, and approaches to ethics that ELSI researchers employ. We found that the aims of ethics within ELSI are largely prescriptive and address multiple groups. We also found that the bioethics methods used in the ELSI literature are both diverse between publications and multiple within publications, but are usually not themselves discussed or employed as suggested by bioethics method proponents. Ethics in ELSI is also sometimes undistinguished from related inquiries (such as social, legal, or political investigations).
Genetics in Medicine | 2012
Rebecca L. Walker; Clair Morrissey
Purpose:We sought to examine the ethical, legal, and social implications (ELSI) literature research and scholarship types, topics, and contributing community fields of training as a first step to charting the broader ELSI community’s future priorities and goals.Methods:We categorized 642 articles and book chapters meeting inclusion criteria for content in both human genetics or genomics and ethics or ELSI during a 5-year period (2003–2008) according to research and scholarship types, topics, and the area of advanced training of the first-listed author. Research and scholarship type categories were developed and characterized through in-depth review of 95 randomly sampled publications from the larger group.Results:There is a single dominant approach to ELSI, which focuses on ethical and other social issues “downstream” of advances in genomics, the contributors to which predominately have advanced training in medicine or science fields other than social science. A comparatively low percentage of publications primarily offer policy recommendations, and these are much more likely to be written by those with advanced training in law than is the case for the literature as a whole. Social science studies predominately employ qualitative methods and vary significantly with respect to the extent and types of recommendations offered. Two further types of ELSI research and scholarship offer alternative models for so-called “normative” work in this field.Conclusion:Considering topics, training, and types of ELSI research and scholarship from the most recent past allows for a baseline perspective that is sorely needed in charting this field’s future course.Genet Med 2012:14(2):259–267
Ajob Primary Research | 2012
Clair Morrissey; Rebecca L. Walker
Background: Discussion of the influence of money on bioethics research seems particularly salient in the context of research on the ethical, legal, and social implications (ELSI) of human genomics, as this research may be financially supported by the ELSI Research Program. Empirical evidence regarding the funding of ELSI research and where such research is disseminated, in relation to the specific topics of the research and methods used, can help to further discussions regarding the appropriate influence of specific institutions and institutional contexts on ELSI and other bioethics research agendas. Methods: We reviewed 642 ELSI publications (appearing between 2003 and 2008) for reported sources of funding, forum for dissemination, empirical and nonempirical methods, and topics of investigation. Results: Most ELSI research is independent of direct grant-based funding sources; 66% reported no such sources of funding. The National Human Genome Research Institute (NHGRI) is the most dominant source of funding; 16% of publications acknowledged at least one source of NHGRI grant funding. Funding is acknowledged more frequently in empirical than nonempirical publications and more frequently in publications in public health journals than in any other ELSI research dissemination forums. Dominant research topics vary by publication forum and by reported funding. Conclusions: ELSI research is surprisingly independent of direct grant-based funding, yet correlations are apparent between this type of funding and publication placement, topics addressed, and methods used, implying a not insignificant influence on ELSI research agenda setting. However, given the relatively low percentage of publications acknowledging external grant-based funding, as well as other significant correlations between publication placement and topics addressed, additional institutional contexts, perhaps related to professional advancement or valuation, may shape research agendas in ways that potentially exceed the direct influences of grant-based funding in this area. In some cases, grant-based funding may actually counter other potentially problematic institutional influences.
Kennedy Institute of Ethics Journal | 2009
Rebecca L. Walker
The standard notion of autonomy in medical ethics does not require that autonomous choices not be irrational. The paper gives three examples of seemingly irrational patient choices and discusses how a rational autonomy analysis differs from the standard view. It then considers whether a switch to the rational autonomy view would lead to overriding more patient decisions but concludes that this should not be the case. Rather, a determination of whether individual patient decisions are autonomous is much less relevant than usually considered in determining whether health care providers must abide by these decisions. Furthermore, respect for rational autonomy entails strong positive requirements of respect for the autonomy of the person as a rational decision maker. The rationality view of autonomy is conceptually stronger than the standard view, allows for a more nuanced understanding of the practical moral calculus involved in respecting patient autonomy, and promotes positive respect for patient autonomy.
Journal of Medicine and Philosophy | 2018
Rebecca L. Walker; Marci D. Cottingham; Jill A Fisher
Phase 1 healthy volunteer clinical trials-which financially compensate subjects in tests of drug toxicity levels and side effects-appear to place pressure on each joint of the moral framework justifying research. In this article, we review concerns about phase 1 trials as they have been framed in the bioethics literature, including undue inducement and coercion, unjust exploitation, and worries about compromised data validity. We then revisit these concerns in light of the lived experiences of serial participants who are income-dependent on phase 1 trials. We show how participant experiences shift attention from discrete exchanges, behaviors, and events in the research enterprise to the ongoing and dynamic patterns of serial participation in which individual decision-making is embedded in collective social and economic conditions and shaped by institutional policies. We argue in particular for the ethical significance of structurally diminished voluntariness, routine powerlessness in setting the terms of exchange, and incentive structures that may promote pharmaceutical interests but encourage phase 1 healthy volunteers to skirt important rules.
Journal of Law Medicine & Ethics | 2014
Rebecca L. Walker; Eric T. Juengst; Warren Whipple; Arlene M. Davis
Recent advances in next generation sequencing along with high hopes for genomic medicine have inspired interest in genomic research with the newly dead. However, applicable law does not adequately determine ethical or policy responses to such research. In this paper we propose that such research stands at a crossroads between other more established biomedical clinical and research practices. In addressing the ethical and policy issues raised by a particular research project within our institution comparatively with these other practices, we illustrate the moral significance of paying careful heed to where one looks for guidance in responding to ethical questions raised by a novel endeavor.
The Journal of Medicine and Philosophy: A Forum for Bioethics and Philosophy of Medicine | 2018
Clair Morrissey; Rebecca L. Walker
Advances in DNA sequencing technology open new possibilities for public health genomics, especially in the form of general population preventive genomic sequencing (PGS). Such screening programs would sit at the intersection of public health and preventive health care, and thereby at once invite and resist the use of clinical ethics and public health ethics frameworks. Despite their differences, these ethics frameworks traditionally share a central concern for individual rights. We examine two putative individual rights-the right not to know, and the childs right to an open future-frequently invoked in discussions of predictive genetic testing, in order to explore their potential contribution to evaluating this new practice. Ultimately, we conclude that traditional clinical and public health ethics frameworks, and these two rights in particular, should be complemented by a social justice perspective in order adequately to characterize the ethical dimensions of general population PGS programs.
Nature Biotechnology | 2015
Nikola Biller-Andorno; Herwig Grimm; Rebecca L. Walker
1. Editorial. Nat. Biotechnol. 32, 961 (2014). 2. Hoffman, A.S. J. Control. Release 132, 153–163 (2008). 3. Davis, F.F. Adv. Drug Deliv. Rev. 54, 457–458 (2002). 4. Barenholz, Y. J. Control. Release 160, 117–134 (2012). 5. Langer, R. & Folkman, J. Nature 263, 797–800 (1976). 6. Matsumura, Y. & Maeda, H. Cancer Res. 46, 6387– 6392 (1986). 7. Brambilla, D., Luciani, P. & Leroux, J.C. J. Control. Release 190, 9–14 (2014). 8. Chauhan, V.P. & Jain, R.K. Nat. Mater. 12, 958–962 (2013). 9. Lammers, T., Kiessling, F., Hennink, W.E. & Storm, G. J. Control. Release 161, 175–187 (2012). 10. El Andaloussi, S., Maeger, I., Breakefield, X.O. & Wood, M.J.A. Nat. Rev. Drug Discov. 12, 347–357 (2013). 11. van der Meel, R. et al. J. Control. Release 195, 72–85 (2014). 12. Kooijmans, S.A. et al. J. Control. Release 172, 229– 238 (2013). important clues about how to deliver these therapeutics most efficiently. It is admittedly the case that our current view on the drug delivery process is generally oversimplified, partially because the molecular regulators that drive the delivery process remain largely elusive. Unveiling the obscure but vital protagonists that shape the intraand extracellular transfection path of drug delivery systems, and combining our gained insights with (nano) technological advances in drug carrier design, could converge into the rational design of next-generation delivery systems. However, over the past decade, our improved understanding of the various biological hurdles that nanomedicines encounter upon in vivo administration coincided with an increased complexity in nanocarrier design to confer multifunctionality, which might entail new, and major, challenges from a manufacturing and regulatory perspective. Although it might appear counterintuitive at first, it is therefore an outstanding challenge to exploit the pending surge of facts and details on the ‘biology’ of the delivery process to the benefit of developing less sophisticated delivery technologies, more amenable to clinical translation and thus with a better chance of changing patients’ lives. Fuelled by the knowledge that conventional synthetic drug carriers often fail to surmount the many in vivo barriers, a handful of biologically inspired delivery technologies that might escape the longstanding vicious cycle of traditional delivery approaches has been put forward. One example that stands out is the exploitation of cell-derived extracellular vesicles (EVs), which are highly efficient signaling vesicles in intercellular communication, as drug delivery tools10. Pioneering papers on the drug delivery potential of EVs evoked a surge of research interest in EV-based therapeutics. Even so, despite initial reports of drug delivery successes using EVs, in our opinion, synthetic liposomes, which share many features with EVs yet lack their heterogeneity, difficulty of scale-up, standardization, and legal and regulatory challenges, still appear to be a better and more feasible choice11. In part, the latter can be explained by the fact that a seemingly trivial issue such as obtaining efficient drug loading is not at all feasible for biological lipid vesicles12. Although several reports endorse the therapeutic potential of EVs, and although their biological behavior is of general interest, we must not forget to tackle these basic pharmaceutical hurdles. An analogy is the example of Doxil, where the remote loading of doxorubicin into preformed liposomes by a transmembrane gradient of ammonium sulfate was a simple concept to achieve high and stable drug loading in the liposomes, and has indeed been vital to Doxil’s clinical approval4. Finally, although efforts to discover new mechanisms associated with membrane transport and cellular trafficking may open up new avenues for innovative drug delivery, we should take care not to oversell their promise. In this regard, the research community should also refrain from publication bias and adopt the publication of negative or inconclusive results as general good scientific practice to avoid misuse of precious research time and money. In addition, verification of breakthrough scientific findings by independent research groups could be an important contribution in this regard. In summary, digging deeper into basic biology indeed seems a sound approach to galvanizing drug delivery research. However, care should be taken that uncovering the nuts and bolts of the delivery process does not drive us into a delivery ‘Ice Age’ because academic research fails to take into account the importance of efficacious, straightforward and robust solutions in enabling commercialization.
The virtual mentor : VM | 2012
Sue E. Estroff; Rebecca L. Walker
A requirement to uphold the confidentiality of information shared in the physician-patient relationship is a central tenet of medical professionalism that, while at risk and undermined in various ways in modern medicine, has been consistently endorsed from the time of Hippocrates.