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Genotyping Single Nucleotide Polymorphisms in the Mitochondrial Genome by Pyrosequencing
Published on: February 10, 2023
Ethics of modifying the mitochondrial genome
A L Bredenoord1, W Dondorp, G Pennings
1Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Stratenum, 6.131, PO Box 85500, 3508 GA Utrecht, The Netherlands. a.l.bredenoord@umcutrecht.nl
Journal of Medical Ethics
|November 13, 2010
Summary
Nuclear transfer can prevent mitochondrial DNA disorders, but involves germ-line modification. This paper argues that modifying mitochondrial DNA is ethically similar to nuclear DNA modification, focusing on safeguarding a child's future instead of identity.
Area of Science:
- Reproductive Medicine
- Bioethics
- Genetics
Background:
- Mitochondrial DNA (mtDNA) disorders affect numerous individuals, with nuclear transfer (NT) showing promise for prevention.
- Current NT techniques for mtDNA disorder prevention involve germ-line modification, raising ethical concerns.
- The distinction between nuclear and mitochondrial DNA modification is often debated regarding its ethical implications.
Purpose of the Study:
- To analyze the ethical considerations of germ-line modification in the context of nuclear transfer for preventing mitochondrial DNA disorders.
- To evaluate the tenability of the dichotomy between nuclear and mitochondrial DNA modification concerning individual identity.
- To assess the moral acceptability of NT for mtDNA disorders based on safeguarding the child's right to an open future.
Main Methods:
- Conceptual analysis of germ-line modification and its implications for personal identity.
- Ethical evaluation of nuclear transfer techniques in light of existing bioethical principles.
- Review of preclinical studies on the feasibility of nuclear transfer for preventing mitochondrial DNA disorders.
Main Results:
- Modification of mitochondrial DNA via NT is not substantively different from nuclear DNA modification in its effect on a future person's identity.
- The ethical debate surrounding germ-line modification should focus on the child's right to an open future, not solely on identity alteration.
- Dismissing NT for mtDNA disorder prevention due to germ-line modification is unjustified if the procedure is safe and effective.
Conclusions:
- Germ-line modification, whether of nuclear or mitochondrial DNA, alters a future person's identity.
- The moral acceptability of germ-line modification hinges on protecting the child's right to an open future.
- Nuclear transfer for preventing mitochondrial DNA disorders warrants ethical consideration based on safety, efficacy, and the safeguarding of future autonomy.
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