Yield of Additional Genetic Testing after Chromosomal Microarray for Diagnosis of Neurodevelopmental Disability and Congenital Anomalies: a clinical practice resource of the American College of Medical Genetics and Genomics (ACMG)

摘要

Purpose:Chromosomal microarray (CMA) is recommended as the first tier test in evaluation of individuals with neurodevelopmental disability and congenital anomalies. CMA may not detect balanced cytogenomic abnormalities or uniparental disomy (UPD), and deletion/duplications and regions of homozygosity may require additional testing to clarify the mechanism and inform accurate counseling. We conducted an evidence review to synthesize data regarding the benefit of additional testing after CMA to inform a genetic diagnosis.