The correlation between phenotype and genotype of 5α-reductase 2 deficiency in 5 children
10.3969/j.issn.1000-3606.2016.12.002
- VernacularTitle:5α-还原酶2缺乏症5例临床表型与基因型分析
- Author:
Yu DING
;
Jian WANG
;
Juan LI
;
Qing CHENG
;
Xin LI
;
Xiumin WANG
;
Xiaodong HUANG
;
Yiping SHEN
;
Yongnian SHEN
- Keywords:
5α-reductase 2 deficiency;
46,XY disorders of sex differentiation;
SRD5A2 gene;
child
- From:
Journal of Clinical Pediatrics
2016;34(12):886-890
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the correlation between phenotype and genotype of 5α-reductase 2 deficiency. Methods The clinical data of five children with 5α-reductase 2 deficiency were retrospectively analyzed and the relation between their clinical phenotype and genotype were analyzed. Results All of these five children presented small penis and testicular hypoplasia, three of whom had ones similar to the clitoris appearance. The testosterone/dihydrotestosterone (T/DHT) ratio was 10.26-64.99 after human chorionic gonadotropin (hCG) stimulation. Gene detection showed one case had c.680G>A homozygous mutation and the others were compound heterozygous mutations. The mutations were mainly missense mutations, followed by deletion, duplication and nonsense mutations. Conclusion The 5α-reductase 2 deficiency has different degrees of abnormal genital development. Genetic testing contributed to the diagnosis of this disease.
