Abstract

To explore the genetic basis for a child with dihydropyrimidase (DHP) deficiency. High-throughput sequencing was carried out for the child. Suspected variants were verified by using Sanger sequencing. The proband was found to carry compound heterozygous variants of the DPYS gene, namely c.1468C>T (a missense variant) and c.1339-1363del (a frameshifting variant). The compound heterozygous variants of the DPYS gene probably underlie the DHP in this child. Above result has enabled genetic counseling and prenatal diagnosis for his parents.

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