Identification of novel variants in a Chinese patient with Chediak-Higashi syndrome.
10.3760/cma.j.cn511374-20211113-00904
- VernacularTitle:一例罕见的Chediak-Higashi综合征患儿的基因型及表型分析
- Author:
Conghui WANG
1
;
Qianqian LI
;
Xuechao ZHAO
;
Ganye ZHAO
;
Xiangdong KONG
Author Information
1. Genetics and Prenatal Diagnosis Center, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China. kongxd@263.net.
- Publication Type:Journal Article
- MeSH:
Male;
Humans;
Chediak-Higashi Syndrome/genetics*;
Vesicular Transport Proteins/genetics*;
Heterozygote;
Genetic Testing;
China
- From:
Chinese Journal of Medical Genetics
2022;39(11):1257-1261
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To explore the genetic basis for a child featuring Chediak-Higashi syndrome (CHS).
METHODS:Clinical manifestations and results of auxiliary examination of the proband were analyzed. The proband was subjected to whole exome sequencing, and the results were verified by Sanger sequencing. Correlation between the genotype and clinical phenotype was analyzed.
RESULTS:The proband showed partial skin albinism, recurrent respiratory infection and other immune deficiencies. Genetic testing showed that he has harbored c.2437C>T (p.Arg813*) and c.6077dupA (p.Tyr2026fs) (NM_000081) compound heterozygous variants of the LYST gene, for which his parents were both carriers. Neither variant was reported previously. HEAT repeats domain was frequently associated with more severe phenotype of CHS (81.6%), whilst no variant has been found in the PH_BEACH domain.
CONCLUSION:This study has enriched the spectrum of LYST gene variants associated with CHS and enabled clinical diagnosis, prenatal diagnosis and prognostic evaluation for the child.
