Preimplantation genetic diagnosis: development and regulation

Area of Science:

• Reproductive Medicine and Genetics
• Bioethics and Medical Law
• Pediatric Stem Cell Transplantation

Background:

• Pre-implantation genetic diagnosis (PGD) is an assisted reproductive technology used with in vitro fertilization (IVF) to screen embryos for serious genetic mutations or chromosomal abnormalities.
• While PGD is accepted for preventing serious inherited diseases, it faces ethical debates regarding potential devaluation of individuals with disabilities and non-medical sex selection.
• Emerging applications of PGD include creating Human Leukocyte Antigen (HLA)-matched donor children for stem cell transplants, raising complex ethical questions about lifelong donation obligations.

Purpose of the Study:

• To examine the ethical and legal implications of using PGD for creating HLA-matched donor children.
• To analyze the potential for exploitation of donor-conceived children and the adequacy of parental decision-making in such cases.
• To compare regulatory approaches in the UK and New Zealand regarding PGD and its ethical boundaries.

Main Methods:

• Ethical and legal analysis of PGD applications.
• Comparative review of regulatory frameworks (UK's HFEA vs. New Zealand).
• Discussion of parental decision-making conflicts and the need for independent oversight.

Main Results:

• The use of PGD for non-medical sex selection and creating donor children presents significant ethical challenges.
• The core ethical issue shifts from PGD itself to the potential for harvesting organs/tissues from a child, necessitating protective measures.
• Discrepancies exist in PGD regulations, with the UK being more permissive than New Zealand, highlighting a lack of consistent legislative frameworks.

Conclusions:

• There is a need for robust legal and ethical guidelines to protect children conceived via PGD for donation purposes.
• Independent authorities or courts may be better suited than parents for making critical decisions regarding a child's donation, especially when conflicts of interest arise.
• The constitutional basis for ethics committee policies in the absence of legislation requires scrutiny, particularly concerning PGD's evolving applications.