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ENGLISH ABSTRACT
JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
[Preimplantation genetic diagnosis. The first experiences in Denmark].
Ugeskrift for Laeger 2001 October 2
INTRODUCTION: Preimplantation genetic diagnosis (PGD) is a possible alternative to prenatal diagnosis, whereby families with serious inherited diseases can avoid having children with the disease. The genetic diagnosis is performed on embryos before implantation and therefore implies IVF. Hence, PGD offers the possibility of transferring embryos without disease, thereby avoiding termination of pregnancy owing to an affected fetus.
MATERIAL AND METHODS: Activities at the Centre for Preimplantation Genetic Diagnosis at Aarhus University Hospital since its opening in February 1999 are described. The fluorescent in situ hybridisation (FISH) technique was used for sex selection (hemophilia A and Duchenne's muscular dystrophy) and translocations. The polymerase chain reaction (PCR) was used for cystic fibrosis.
RESULTS: Of 20 PGD cycles started, 15 were successful in terms of transference of healthy or carrier embryos. A positive pregnancy test was found after six of 15 embryo transfers (40%) with two subsequent clinical pregnancies.
CONCLUSIONS: The present pregnancy rates with PGD are comparable to those following IVF; the clinical pregnancy rate may seem low, but the cycle numbers are small. Preimplantation genetic diagnosis seems to be a realistic alternative for selected genetic diseases, in cases where the couple find abortion unacceptable.
MATERIAL AND METHODS: Activities at the Centre for Preimplantation Genetic Diagnosis at Aarhus University Hospital since its opening in February 1999 are described. The fluorescent in situ hybridisation (FISH) technique was used for sex selection (hemophilia A and Duchenne's muscular dystrophy) and translocations. The polymerase chain reaction (PCR) was used for cystic fibrosis.
RESULTS: Of 20 PGD cycles started, 15 were successful in terms of transference of healthy or carrier embryos. A positive pregnancy test was found after six of 15 embryo transfers (40%) with two subsequent clinical pregnancies.
CONCLUSIONS: The present pregnancy rates with PGD are comparable to those following IVF; the clinical pregnancy rate may seem low, but the cycle numbers are small. Preimplantation genetic diagnosis seems to be a realistic alternative for selected genetic diseases, in cases where the couple find abortion unacceptable.
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