First Case of Macrocephaly, Dysmorphic Facies, and Psychomotor Retardation Harboring Co-inherited Variants in HERC1 and PMP22 Genes from Iran: Two Novel Variants.

ABSTRACT: Here, we report a case with concomitant variants: a novel homozygous HERC1 gene variant and a novel heterozygous PMP22 duplication. The 2-year-old male presented with seizures, developmental delay, macrocephaly, hypotonia, unilateral hypertrophy, thoracic scoliosis, normal brain MRI, and elevated homocysteine level which normalized after treatment. Whole exome sequencing (WES) revealed a co-occurrence of a homozygous novel likely pathogenic variant in the HERC1 gene (NM_003922.3:c.1280dup (p.ILe469Aspfs*33) and a novel heterozygous large duplication of exon 1-5 in the PMP22 gene, which has not been reported previously. The case underscores the challenges in understanding genotype-phenotype correlations and suggests a potential interplay between these genetic var

SUBMITTER: Reshadmanesh A 

PROVIDER: S-EPMC11786211 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature