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Should embryos with a hereditary disorder be transferred if no unaffected embryos are available?
Date:7/7/2008

Barcelona, Spain: The numbers of cycles of preimplantation genetic diagnosis or screening are rising steadily in Europe with over 2,700 reported in 2004 (the most recent year for which data are available). Fertility centres are able to screen for a growing number of genetically related conditions, but what should doctors do if no embryos without the targeted condition are available for transfer and the parents request that affected embryos should be transferred instead?

Ethicist Dr Wybo Dondorp told the 24th annual meeting of the European Society of Human Reproduction and Embryology in Barcelona today (Monday): "Parental requests for transferring affected embryos should not be dismissed beforehand as a sign of irresponsible capriciousness. As the couple's primary wish may be for a child, they may reason that if a non-affected, healthy child is not what they can get, they will also be happy with, and good parents for, a child with a condition they at first intended to avoid. Respect for autonomy at least requires taking such requests seriously, even if, in view of all other considerations, doctors decide not agree to the requests."

Dr Dondorp, who is a senior research fellow at the faculty of Health, Medicine and Life Sciences, department of Health, Ethics and Society at Maastricht University (The Netherlands), said that before couples have preimplantation genetic diagnosis (PGD), fertility clinics should discuss the decision-making process and the particular clinic's policy in their pre-test counselling sessions with prospective parents, so that everyone was clear about what the options were in cases where no unaffected embryos could be obtained.

He said the most important consideration was the welfare of the child, particularly taking into account doctors' professional responsibility "to do no harm". "A high risk of serious harm is a contraindication for transferring affected embryos. The present consensus is that where the classical
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Contact: Emma Mason
wordmason@mac.com
34-932-308-810
European Society for Human Reproduction and Embryology
Source:Eurekalert

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