Bin Zhang, Fudong Li, Chuang Huang, Liuting Xu, Zhigang Cao, Yafen Kang, Wei Jiang, Dehui Chang
BACKGROUND: Klinefelter Syndrome (KS) is a sex chromosomal syndrome usually with an extra X chromosome (47, XXY) in males, which has various phenotype (mosaicism 47, XXY/46, XY, or more chromosomes 48, XXXY, 49, XXXXY) and clinical features, including eunuchoid body proportions, abnormally long legs and arm span, gynecomastia, ynecomastia, absent or decreased facial and pubic hair, small hyalinized testes, small penis, below-normal verbal intelligence quotient, and learning difficulties...
September 2023: Heliyon