Related Experiment Video
Updated: Feb 12, 2026

Measuring Delay Discounting in Humans Using an Adjusting Amount Task
Published on: January 9, 2016
A Novel HECW2 Variant (c.4354G>A; p. Gly1452Ser) in a Chinese Patient with Developmental Delay, Neurodevelopmental
Lan Zeng1, Jing Nie2, Shuyao Zhu3
1Department of Medical Genetics and Prenatal Diagnosis, Sichuan Provincial Woman's and Children's Hospital/The Affiliated Women's and Children's Hospital of Chengdu Medical College, Chengdu, China.
Introduction:
Neurodevelopmental disorders (NDDs) due to the HECW2 (MIM:617245), the pathogenic variant, are extremely rare. HECW2-related disorder has been established through the identification of de novo variants in HECW2 gene in patients with NDDs with hypotonia, seizures, and absent language.
Case Presentation:
In this study, the clinical and genetic features of a Chinese girl with neurodevelopmental delay, developmental language disorder, and hypotonia are described. Trio whole exome sequencing revealed a novel likely pathogenic variant in HECW2 (exon26: c.4354G>A; p. Gly1452Ser) in the patient, while the variant was absent in her parents with Sanger sequencing.
Conclusion:
Our objective was to identify the potential site of HECW2, combined with the literature review, to find the correlation between clinical phenotype and genotype.
Related Concept Videos
Histone Variants at the Centromere
Introduction to Developmental Psychology
Three Developmental Domains
Physical Development
Physical processes, also known as maturation, encompass the biological changes that occur across an individual's life. These changes begin with genetic inheritance and continue through various stages, including growth in height and weight,...
Patient-centered Care
Drug Dosing: Geriatric Patients
Drug Dosing: Obese Patients

