Clinical research ethics consultation has emerged in the last 15 years as a service to those involved in the conduct of clinical research who face challenging issues for which more than one course of action may be justified. To respond to a growing field and need for opportunities to share knowledge and experience, the Clinical Research Ethics Consultation Collaborative, established in 2014, holds monthly webinars for its 90 members to present their most challenging cases to each other and engage in substantive discussion. Every year, the group selects the four most interesting cases with accompanying commentaries for publication in the American Journal of Bioethics . This timely book brings together these cases and commentaries under a range of common themes for the first time, creating a permanent collection in book format that encourages and supports readers to gain a better understanding of the ethical challenges that they may face, and providing them with a convenient and reflective resource to reference in their own deliberations. Key Features: • Comprehensive collection of cases and commentaries, chosen to reflect the range of issues faced by clinical researchers and oversight committees and illustrate the diversity of analysis that can arise • Supplemented by short introductions to each section • Focus on ethical rather than regulatory issues • Essential reading for graduate students in bioethics and post-doctoral bioethics fellows, and useful for all participants in training grants that are funded by either NIH or NSF Presenting challenging cases to stimulate reflection, the book provides invaluable guidance to clinicians in training and in practice and to investigators, bioethics consultants, regulators, and oversight bodies.