Prenatal diagnosis of holoprosencephaly in two fetuses with der (7)t(1;7)(q32;q32)pat inherited from the father with double translocations

Louise Chuang, Pao Lin Kuo, Hsiao Bai Yang, Chung Ho Chien, Pei Yi Chen, Chiung Hsin Chang, Fong Ming Chang

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

The presence of two independent translocations in one person is rare. Herein, we report the prenatal diagnosis of two sibling fetuses with holoprosencephaly, whose father is a carrier of double translocations. The karyotype of the father is 46,XY, t(1;7) (q32;q32), t(14,15) (q32.1;q26.3). The two fetuses had variable facial dysmorphisms and identical cytogenetic abnormality - a derivative (7) t(1;7) (q32;q32) inherited from the father. The proband 1 showed a small mouth, a single median eye and a proboscis above the eye, while the proband 2 showed hypotelorism, a flat nose, cleft lip and cleft palate. Both fetuses also had alobar holoprosencephaly. Haploinsufficiency of the sonic hedgehog gene at 7q36 does account for the occurrence of holoprosencephaly in the two fetuses with a deletion of distal 7q (7q32→qter).

Original languageEnglish
Pages (from-to)134-137
Number of pages4
JournalPrenatal Diagnosis
Volume23
Issue number2
DOIs
Publication statusPublished - 2003 Feb 1

All Science Journal Classification (ASJC) codes

  • Obstetrics and Gynaecology
  • Genetics(clinical)

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