RT Journal Article T1 Detailed Clinical and Psychological Phenotype of the X-linked HNRNPH2-Related Neurodevelopmental Disorder. A1 Bain, Jennifer M A1 Thornburg, Olivia A1 Pan, Cheryl A1 Rome-Martin, Donnielle A1 Boyle, Lia A1 Fan, Xiao A1 Devinsky, Orrin A1 Frye, Richard A1 Hamp, Silke A1 Keator, Cynthia G A1 LaMarca, Nicole M A1 Maddocks, Alexis B R A1 Madruga-Garrido, Marcos A1 Niederhoffer, Karen Y A1 Novara, Francesca A1 Peron, Angela A1 Poole-Di Salvo, Elizabeth A1 Salazar, Rachel A1 Skinner, Steven A A1 Soares, Gabriela A1 Goldman, Sylvie A1 Chung, Wendy K AB To expand the clinical phenotype of the X-linked HNRNPH2-related neurodevelopmental disorder in 33 individuals. Participants were diagnosed with pathogenic or likely pathogenic variants in HNRNPH2 using American College of Medical Genetics and Genomics/Association of Molecular Pathology criteria, largely identified via clinical exome sequencing. Genetic reports were reviewed. Clinical data were collected by retrospective chart review and caregiver report including standardized parent report measures. We expand our clinical characterization of HNRNPH2-related disorders to include 33 individuals, aged 2-38 years, both females and males, with 11 different de novo missense variants, most within the nuclear localization signal. The major features of the phenotype include developmental delay/intellectual disability, severe language impairment, motor problems, growth, and musculoskeletal disturbances. Minor features include dysmorphic features, epilepsy, neuropsychiatric diagnoses such as autism spectrum disorder, and cortical visual impairment. Although rare, we report early stroke and premature death with this condition. The spectrum of X-linked HNRNPH2-related disorders continues to expand as the allelic spectrum and identification of affected males increases. SN 2376-7839 YR 2021 FD 2021-01-29 LK https://hdl.handle.net/10668/27337 UL https://hdl.handle.net/10668/27337 LA en DS RISalud RD Apr 12, 2025