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Le diagnostic génétique pré-implantatoire: premier bilan du groupe parisien

Preimplantation genetic diagnosis: update

Resume

Le travail rapporte l’expérience parisienne du diagnostic génétique pré-implantatoire (DPI). 59 couples ont été pris en charge de janvier 2000 à juillet 2001 au cours de 71 cycles. Les ovocytes recueillis ont été inséminés par injection intracytoplasmique de spermatozoïde et les embryons biopsiés au troisième jour de développement. L’analyse génétique a été effectuée le jour de la biopsie et la majorité des transferts embryonnaires effectués le quatriéme jour post fécondation. Au cours des 71 cycles, 872 ovocytes ont été recueillis dont 731 étaient compatibles avec une injection intracytoplasmique de spermatozoïde. Parmi les 505 embryonds obtenus, 421 embryons ont été biopsiés et un résultat génétique a été obtenu pour 312 (74%) d’entre eux. 127 embryons ont été transférés au cours de 58 transferts. 18 grossesses biologiques et 12 cliniques ont été obtenues (7 uniques, 4 gémellaires et une triple). 16 enfants sont nés. Le DPI prend désormais sa place parmi les choix proposés aux couples à risque de transmission de maladie génétique de particulière gravité et incurable au moment du diagnostic.

Abstract

This paper reports the birth of the first fourteen infants conceived after preimplantation genetic diagnosis (PGD) in our unit. Fifty-nine couples were enrolled between January 2000 and July 2001. They had a total of 71 oocyte pick-up cycles. The collected oocytes were inseminated by intracytoplasmic sperm injection. The resulting embryos were biopsied on the third day of development and genetic analysis was performed on the same day. Most of the embryo transfers were carried out on the fourth day. The 71 oocyte pick-up cycles yielded 872 oocytes of which 731 were suitable for intacytoplasmic sperm injection. Among the 505 embryos obtained, 421 embryos were biopsied and genetic diagnosis was performed for 312 (74%) of them. 127 embryos were transferred during 58 transfer procedures. There were 18 biochemical and 12 ongoing (7 singles, 4 twins and 1 triple) pregnancies. Sixteen infants have been born and 2 are expected. PGD now constitutes an alternative for couples at risk of transmission of a serious and incurable genetic disease.

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Correspondence to René Frydman.

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Achour-frydman, N., Tachdjian, G., Ray, P. et al. Le diagnostic génétique pré-implantatoire: premier bilan du groupe parisien. Androl. 13, 259–264 (2003). https://doi.org/10.1007/BF03034880

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