Abstract
A couple were referred for prenatal genetic testing at 31weeks' gestation due to the presence of mild polyhydramnios and multiple central nervous system (CNS) abnormalities, including borderline ventriculomegaly, possible delayed sulcation, an enlarged cisterna magna and a small area of calcification around the posterior horns. Testing was initiated to identify any underlying genetic cause. Rapid trio exome sequencing (ES) was performed on DNA extracted from parental blood samples and amniotic fluid. A pathogenic homozygous nonsense variant in KLHL7 (NM_001031710.2) associated with PERCHING syndrome (#617055) was identified. Whilst there are detailed descriptions of the many postnatal phenotypes seen in these patients, there are few reports of features identified during pregnancy. This report is the first published prenatal diagnosis of PERCHING syndrome and provides further information on the associated fetal phenotypes.
Published Version
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