Cytogenetic and clinical notes on a girl with a 46,X,i(Yq) karyotype, H-Y antigen-negative, and a gonadoblastoma

J. M. Rary, D. K. Cummings, H. W. Jones, J. A. Rock, C. G. Julian

Research output: Contribution to journalArticlepeer-review

Abstract

Isochromosomes for the long arm of the Y chromosome are rare and only a few cases have been reported in the literature. The isochromosome for the long arm of the Y chromosome serves as a unique opportunity for looking at factors relating to the genetic function of the Y chromosome. Localization of the gene(s) responsible for differentiation of the human gonad on either the long or short arm of the Y chromosome has been a long-standing question. This case is also pertinent to the reports of increased risks of gonadal tumors in gonadal dysgenesis patients with either a normal or abnormal Y chromosome present in their karyotype. Fibroblasts from this individual were determined to be H-Y antigen-negative. This evidence strongly suggests that the H-Y antigen gene is located on the short arm of the Y chromosome in man.

Original languageEnglish (US)
Pages (from-to)97-107
Number of pages11
JournalBirth Defects: Original Article Series
Volume14
Issue number6 C
StatePublished - Dec 1 1978

ASJC Scopus subject areas

  • Developmental Biology
  • Genetics(clinical)

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