[Diagnosis of a case of autosomal recessive polycystic kidney disease with combined prenatal imaging and genetic testing].

Zhonghua yi xue yi chuan xue za zhi = Zhonghua yixue yichuanxue zazhi = Chinese journal of medical genetics
Yinghui LuTianyou Wang

Abstract

To explore the genetic basis for a fetus with renal abnormalities through whole exome sequencing and imaging examination. Clinical data and result of medical imaging of the fetus was collected. Amniotic fluid sample was collected for the extraction of fetal DNA. Whole exome sequencing was carried out. Candidate variants were verified by Sanger sequencing. Prenatal ultrasonography showed that the fetus had bilateral enlargement of the kidneys with hyperechogenicity and diffuse renal cysts. Whole exome sequencing revealed that the fetus carried compound heterozygous variants of the PKHD1 gene, namely c.5137G>T and c.2335_2336delCA, which were derived from its mother and father, respectively. The fetus was diagnosed with autosomal recessive polycystic kidney disease through combined prenatal ultrasonography and whole exome sequencing. The compound heterozygous variants of the PKHD1 gene probably underlay the pathogenesis in the fetus. The results have enabled prenatal diagnosis and genetic counseling for its parents.

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