Open Access22q11 microdeletion studies in the heart tissue of an abortus involving a familial form of congenital heart disease
Author(s) -
Patel Z.M.,
Gawde H.M.,
Khatkhatay M.I.
Publication year - 2006
Publication title -
journal of clinical laboratory analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.536
H-Index - 50
eISSN - 1098-2825
pISSN - 0887-8013
DOI - 10.1002/jcla.20125
Subject(s) - heart disease , digeorge syndrome , fluorescence in situ hybridization , microdeletion syndrome , medicine , heart defect , fish <actinopterygii> , chromosome , fetus , pregnancy , pathology , anatomy , genetics , biology , gene , psychiatry , fishery
Microdeletion of chromosome 22 is responsible for DiGeorge syndrome, Velo Cardio Facial syndrome, and conotruncal defects. Here, we report on a case of microdeletion 22q11.2 in the heart tissue of a miscarried fetus in a family whose two children had died due to complex congenital heart disease. Fluorescence in situ hybridization (FISH) analysis in the couple revealed that the mother was mosaic for microdeletion of chromosome 22q11.2 in 10% of her peripheral lymphocytes. Prenatal diagnosis was offered to her in her third pregnancy. On routine ultrasonography at 10 weeks, the overall view of the heart was normal. However, before any further tests could be performed, she miscarried at 16 weeks. FISH studies on the heart tissue of the abortus revealed 22q11.2 microdeletion with two different cell lines. This suggests the importance of performing FISH studies when there is a history of congenital heart disease, even though ultrasonography shows a normal view of the heart. J. Clin. Lab. Anal. 20:160–163, 2006. © 2006 Wiley‐Liss, Inc.