O-27: Preimplantation Genetic Diagnosis in Prevention of Genetic Diseases -Diagnostic of Spinal Muscular Atrophy (SMA)
نویسندگان
چکیده مقاله:
Background: Preimplantation genetic diagnosis - PGD is currently an established procedure allowing genetic research of oocyte or embryo before implantation to the uterus. Spinal muscular atrophy (SMA) is a neurodegenerative disorder, being the second most common lethal autosomal recessive disease in Caucasians, after cystic fibrosis. There are three clinically different types of which type I (Werding-Hoffman Disease) is the most severe form. Around 98% of clinical cases of SMA are caused by the homozygous absence of a region of exons 7 and 8 of the telomeric copy of the SMN gene (SMN1) on chromosome 5 (5q13.3). We performed PGD for SMA in 5 couples who had already given birth to a child affected with SMA. Materials and Methods: All patients underwent standard IVF procedures associated with intracytoplasmic sperm injection. 6-8 cell embryos were biopsied on day 3 of culture. Single cell nested PCR-RFLP protocol for PGD of SMA was used for detection of mutation. Results: In course of IVF-PGD procedures all patients were performed transfer of embryos without SMN1 deletions. Four of five couples delivered healthy babies. Conclusion: Preimplantation genetic diagnosis (PGD) of monogenic disorders is very efficient method, especially for patients when a previous child is homozygous for genetic disorders. It opens a new horizons of treatment for genetic disease carriers.
منابع مشابه
Assessment of Preimplantation Genetic Diagnosis (PGD) for Childhood-onset Spinal Muscular Atrophy (SMA) Using Duplex Fluorescent PCR
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Preimplantation genetic diagnosis (PGD) is an alternative to prenatal diagnosis allowing the detection of genetic diseases on IVF embryos before their transfer into the uterus and before the pregnancy. The aim of this procedure is to obtain unaffected or carrier embryos in order to avoid the burden of termination of pregnancy after prenatal diagnosis for couples at risk of transmitting particul...
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عنوان ژورنال
دوره 5 شماره Supplement Issue
صفحات -
تاریخ انتشار 2011-09-01
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