Novel exon-skipping variant disrupting the basic domain of HCFC1 causes intellectual disability without metabolic abnormalities in both male and female patients.

Abstract excerpt

HCFC1, a global transcriptional regulator, has been shown to associate with MMACHC expression. Pathogenic variants in HCFC1 cause X-linked combined methylmalonic acidemia and hyperhomocysteinemia, CblX type (MIM# 309541). Recent studies showed that certain variants in HCFC1 are associated with X-linked intellectual disability with mild or absent metabolic abnormalities. Here, we report five subjects (three males,...

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