Journal of Clinical Pediatrics ›› 2020, Vol. 38 ›› Issue (5): 321-.doi: 10.3969/j.issn.1000-3606.2020.05.001
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WANG Lili, WU Haiying, SUN Hui, WANG Xiaoyan, ZHANG Dandan, XIE Rongrong, WANG Fengyun, CHEN Ting, CHEN Xiuli, CHEN Linqi
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Abstract: Objective To analyze the clinical and genetic characteristics of X-linked spondyloepiphyseal dysplasia tarda (SEDT-XL) caused by the mutation of TRAPPC2 gene. Methods The clinical data and genetic results of a SEDT-XL family were retrospectively analyzed. Results The proband, a 9 years and 2 months old boy, was 115 cm (3SD) in height, 109 cm in arm distance, 56 cm in upper part, 59 cm in lower part and 21 kg in weight, prominent ears, sharp mandible, irregular dentition, short neck, scoliosis, no obvious abnormality was found in the heart, lung and abdomen. Motor and speech development were normal. The genomic DNA was extracted from the peripheral blood samples of the proband, his parents and uncle, and the whole exome sequencing was performed. A hemizygous mutation of c.115delC in the exon 4 of the TRAPPC2 gene of the proband resulted in the amino acid change p.Q39Sfs * 3. The hemizygous mutation was inherited from his mother and his uncle had the same hemizygous mutation. Conclusion The mutation of c.115delC in exon 4 of TRAPPC2 gene is the pathogenic cause of SEDT-XL in the family.
Key words: X-linked spondyloepiphyseal dysplasia tarda; TRAPPC2 gene; genetic mutation
WANG Lili, WU Haiying, SUN Hui, et al. A case of X-linked spondyloepiphyseal dysplasia tarda with TRAPPC2 gene mutation[J].Journal of Clinical Pediatrics, 2020, 38(5): 321-.
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URL: https://jcp.xinhuamed.com.cn/EN/10.3969/j.issn.1000-3606.2020.05.001
https://jcp.xinhuamed.com.cn/EN/Y2020/V38/I5/321
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