Objective: To describe a de novo complex chromosome rearrangement(CCR) detected prenatally and studied afterbirth.
Methods: Conventional cytogenetics and fluorescent in situ hybridization (FISH) were performed on amniotic fluid and peripheral blood. High-resolution comparative genomic hybridization (HR-CGH) analysis was made postnatally.
Results: Prenatal/postnatal cytogenetic, FISH and HR-CGH analyses revealed an apparently balanced de novo CCR ascertained as 46,XY,t(2; 3;9)(q21;p24;q22),der(5)inv(5)(?p11q13)t(5; 11)(?p13;q25),ins(5; 3)(?p13;?p23p24). At 9 months,the child has neither congenital anomalies nor evidence of delayed psychomotor development.
Conclusions: Our report describes a rare CCR detected prenatally and shows the usefulness of FISH and CGH in complementing conventional cytogenetics.
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