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  • Title: Outcome of intracytoplasmic sperm injection for a couple in which the man is carrier of CFTR p.[R74W;V201M;D1270N] and p.P841R mutations and his spouse a heterozygous carrier of p.F508del mutation of the cystic fibrosis transmembrane conductance regulator gene.
    Author: Brugnon F, Bilan F, Heraud MC, Grizard G, Janny L, Creveaux I.
    Journal: Fertil Steril; 2008 Nov; 90(5):2004.e23-6. PubMed ID: 18703181.
    Abstract:
    OBJECTIVE: To document the phenotype associated with the p.[R74W;V201M;D1270N] and p.P841R mutations of cystic fibrosis transmembrane conductance regulator (CFTR) gene. DESIGN: Case report. SETTING: Biology and medicine of reproduction in a university hospital. PATIENT(S): A couple in which the man is carrier of the triple mutant p.[R74W;V201M;D1270N] allele in trans to p.P841R mutation and his spouse a heterozygous carrier for the severe p.F508del mutation of the CFTR gene, who became pregnant after intracytoplasmic sperm injection (ICSI) with twins. INTERVENTION(S): Genetic counseling; CFTR gene sequencing; ICSI; children's follow-up. MAIN OUTCOME MEASURE(S): First report of a male phenotype associated with the p.P841R mutation. RESULT(S): The triple mutant p.[R74W;V201M;D1270N] allele associated with the unknown p.P841R mutations were detected in this man with congenital bilateral absence of the vas deferens, which may presume p.P841R as a severe mutation. After genetic counseling, the couple preferred prenatal diagnosis after ICSI than preimplantation genetic diagnosis, which revealed that the boys were both carriers of p.[R74W;V201M;D1270N] and p.F508del mutations. They are now 4 years old and show normal growth without nutritional deficiency. CONCLUSION(S): This case report documents for the first time a male phenotype associated with the p.P841R mutation and underlines the difficulties in counseling a man with congenital bilateral absence of the vas deferens carrying uncommon mutations of the cystic fibrosis transmembrane conductance regulator (CFTR) gene before ICSI.
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