A New 3p14.2 Microdeletion in a Patient with Intellectual Disability and Language Impairment: Case Report and Review of the Literature.

Interstitial deletions of chromosome 3p are rare, and specific genotype-phenotype correlations cannot always be assessed. We report the case of a 3p14.2 proximal microdeletion in a 60-year-old female patient with mild intellectual disability, severe speech delay, and mild dysmorphism. An array-CGH analysis detected a 500-kb deletion in the 3p14.2 region, including FEZF2, CADPS, and PTPRG. FEZF2 and CADPS are known to network within the neurodevelopmental pathways. It is possible that their rearrangements lead to the phenotypic features observed in the patient, and therefore, they can be considered candidate genes responsible for such abnormalities.