https://www.jstage.jst.go.jp/article/pjab1945/40/6/40_6_427/_article/-char/ja/
Two Phenotypic Males with XXXXY and XXXY Sex Chromosomes
twomalessexchromosomes
https://pmc.ncbi.nlm.nih.gov/articles/PMC9986774/
The timely diagnosis of 49, XXXXY with the combined detection of MLPA, karyotype, and QF-PCR in a...
49, XXXXY is a rare sex chromosomal aneuploidy syndrome. The patients usually are diagnosed several months or years after birth. Herein a neonate with...
https://medlineplus.gov/genetics/condition/49xxxxy-syndrome/
49,XXXXY syndrome: MedlinePlus Genetics
49,XXXXY syndrome is a chromosomal condition in boys and men that causes intellectual disability, developmental delays, physical differences, and an inability...
syndromemedlineplusgenetics