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Related Concept Videos

Animal Mitochondrial Genetics02:59

Animal Mitochondrial Genetics

Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...

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Mitochondrial replacement techniques for treating infertility.

Esther Braun1,2

  • 1Institute for Medical Ethics and History of Medicine, Ruhr University Bochum, Bochum, Germany esther.braun@rub.de.

Journal of Medical Ethics
|February 21, 2024
PubMed
Summary
This summary is machine-generated.

Mitochondrial replacement techniques (MRTs) can prevent genetic disease transmission. Ethical review suggests trials for infertility are as justifiable as those for preventing mitochondrial diseases.

Keywords:
Embryos and FetusesEthics- MedicalFertilization in VitroGenetic EngineeringReproductive Medicine

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Area of Science:

  • Reproductive Medicine
  • Bioethics
  • Genetics

Background:

  • Mitochondrial replacement techniques (MRTs) are regulated in the UK and Australia, permitting trials only for preventing severe mitochondrial diseases.
  • These techniques also show potential for treating infertility, particularly in older women, but this application is less ethically scrutinized.
  • Current bioethical discussions predominantly focus on disease prevention, overlooking infertility treatment applications.

Purpose of the Study:

  • To ethically evaluate prohibiting clinical trials on MRTs for infertility.
  • To compare the ethical justifications for MRTs in infertility treatment versus disease prevention.
  • To determine if ethical reasons exist to disallow infertility-focused MRT trials when disease-prevention trials are permitted.

Main Methods:

  • Comparative ethical analysis of MRT applications.
  • Assessment of evidence base, potential benefits, and risks for both MRT contexts.
  • Review of existing legal and bioethical frameworks for MRTs.

Main Results:

  • The evidence base, potential benefits, and risks associated with MRTs for infertility are comparable to those for mitochondrial disease prevention.
  • Existing regulations in the UK and Australia permit MRT trials for disease prevention but not explicitly for infertility.
  • No compelling ethical distinctions were found to prohibit infertility-focused MRT trials when disease-prevention trials are allowed.

Conclusions:

  • There are no convincing ethical grounds to prohibit clinical trials on mitochondrial replacement techniques for infertility.
  • Ethical considerations for MRTs in infertility treatment warrant further attention and potential regulatory inclusion.
  • Allowing MRT trials for infertility aligns with ethical principles when compared to existing allowances for disease prevention.