Unbalanced translocation 46,XY,-15,+der(22)t(15;22)(q13;q11)pat: case report and review of the literature.

Journal Article (Journal Article)

We present a boy with a rare unbalanced translocation 46,XY,-15,+der(22),t(15;22)(q13;q11) pat. Previous reports of similar chromosome findings mention only the Prader-Willi phenotype. At birth, his manifestations included severe hypotonia and lethargy, (typical of deletion of 15pter----q13); hypertelorism, down-slanting small palpebral fissures, preauricular tags, long philtrum (typical of duplication of 22pter----q11); severe laryngotracheomalacia, and proximal implantation of the thumb. In a review of the literature on chromosome abnormalities involving duplication of 22q11 the associated clinical phenotype consists of mild mental retardation, microcephaly, hypotonia, hypertelorism, down-slanting palpebral fissures, a long philtrum, cleft or highly arched palate, and ear abnormalities. Preauricular pits or tags are common. Cardiovascular defects, renal and genital problems and dislocated hips are frequently present. Anal atresia and colobomata are mainly seen in cat-eye syndrome, the phenotype associated with idic 22q11. Our findings indicate that patients with unbalanced t(15;22) can have manifestations of the dup 22q11, in addition to the previously reported Prader-Willi phenotype, even if the duplicated segment is small.

Full Text

Duke Authors

Cited Authors

  • Van Hove, JL; McConkie-Rosell, A; Chen, YT; Iafolla, AK; Lanman, JT; Hennessy, MD; Kahler, SG

Published Date

  • September 1, 1992

Published In

Volume / Issue

  • 44 / 1

Start / End Page

  • 24 - 30

PubMed ID

  • 1519645

International Standard Serial Number (ISSN)

  • 0148-7299

Digital Object Identifier (DOI)

  • 10.1002/ajmg.1320440107


  • eng

Conference Location

  • United States