R A Heim1, E A Sugarman, B A Allitto. 1. Molecular Diagnostic Laboratory, Genzyme Genetics, Framingham, Massachusetts 01701-9322, USA.
Abstract
PURPOSE: To determine the comparative frequency of 93 CFTR mutations in U.S. individuals with a clinical diagnosis of cystic fibrosis (CF). METHODS: A total of 5,840 CF chromosomes from Caucasians, Ashkenazi Jews, Hispanics, African Americans, Native Americans, Asians, and individuals of mixed race were analyzed using a pooled ASO hybridization strategy. RESULTS: Sixty-four mutations provided a sensitivity of 70% to 95% in all ethnic groups except Asians, and at least 81% when the U.S. population was considered as a whole. CONCLUSIONS: For population-based carrier screening for CF in the heterogeneous U.S. population, which is characterized by increasing admixture, a pan-ethnic mutation panel of 50 to 70 CFTR mutations may provide a practical test that maximizes sensitivity.
PURPOSE: To determine the comparative frequency of 93 CFTR mutations in U.S. individuals with a clinical diagnosis of cystic fibrosis (CF). METHODS: A total of 5,840 CF chromosomes from Caucasians, Ashkenazi Jews, Hispanics, African Americans, Native Americans, Asians, and individuals of mixed race were analyzed using a pooled ASO hybridization strategy. RESULTS: Sixty-four mutations provided a sensitivity of 70% to 95% in all ethnic groups except Asians, and at least 81% when the U.S. population was considered as a whole. CONCLUSIONS: For population-based carrier screening for CF in the heterogeneous U.S. population, which is characterized by increasing admixture, a pan-ethnic mutation panel of 50 to 70 CFTR mutations may provide a practical test that maximizes sensitivity.
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