Abstract
To analyze the clinical phenotype and genetic characteristics of a patient with Isidor-Toutain spinal epiphyseal dysplasia (SEMD) due to variant of RPL13 gene. A pregnant woman at 18 weeks of gestation who had presented at Quzhou Maternal and Child Health Care Hospital on January 14, 2023 was selected as the study subject. Whole exome sequencing (WES) was carried out for the patient, and candidate variant was validated by Sanger sequencing and bioinformatic analysis. The woman was 37 years old with extremely short stature (135 cm) and "O" shaped legs. WES revealed that she has harbored a c.548G>C (p.Arg183Pro) missense variant of the RPL13 gene (NM_000977.4). The same variant was not found in her fetus. Based on the guidelines from the American College of Medical Genetics and Genomics (ACMG), the variant was predicted to be likely pathogenic (PS4+PM2_Supporting+PP3+PP4). Isidor-Toutain type SEMD due to variants of the RPL13 gene may have variable expressivity and diverse clinical phenotypes. Above finding has facilitated the differential diagnosis and genetic counseling for this family.
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Schedule a callMore From: Zhonghua yi xue yi chuan xue za zhi = Zhonghua yixue yichuanxue zazhi = Chinese journal of medical genetics
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