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Why we should not extend the 14-day rule

Bruce Philip Blackshaw1, Daniel Rodger2

  • 1Department of Philosophy, University of Birmingham, Birmingham B15 2TT, UK bblackshaw@gmail.com.

Journal of Medical Ethics
|June 11, 2021
PubMed

Insights

The 14-day rule for human embryo research is debated. Extending the in vitro culturing limit is argued against, as the original ethical reasons remain valid.

Area of Science:

  • Embryology
  • Bioethics
  • Developmental Biology

Background:

  • The 14-day rule limits in vitro human embryo culture for research.
  • New capabilities challenge this long-standing restriction.
  • Debate surrounds potential modifications to the rule.

Purpose of the Study:

  • To evaluate the argument for extending the 14-day rule to 28 days.
  • To re-examine the foundational ethical considerations of the Warnock Committee.
  • To assess the persuasiveness of extending human embryo research timelines.

Main Methods:

  • Critical analysis of Sophia McCully's proposal for a 28-day limit.
  • Review of the historical ethical justifications for the 14-day rule by the Warnock Committee.
  • Argumentative critique of the extension proposal based on enduring ethical concerns.

Main Results:

  • McCully's argument for extending the 14-day rule to 28 days was not found persuasive.
  • The core ethical reasons established by the Warnock Committee for the 14-day limit remain relevant.
  • The potential benefits presented for extension do not outweigh the persistent ethical considerations.

Conclusions:

  • The 14-day rule's ethical underpinnings are still valid and necessitate careful consideration.
  • Extending human embryo culture beyond 14 days requires addressing the original ethical concerns.
  • The current arguments for modification do not sufficiently overcome the established ethical framework.
Keywords:
embryos and fetusesin vitro fertilisation and embryo transfermoral statusresearch ethics

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