PMID- 12239730 OWN - NLM STAT- MEDLINE DCOM- 20030304 LR - 20041117 IS - 0148-7299 (Print) IS - 0148-7299 (Linking) VI - 112 IP - 1 DP - 2002 Sep 15 TI - Co-occurrence of chromosome 22q11.2 microdeletion and trisomy 21 mosaicism. PG - 99-102 AB - This report describes a patient who had some phenotypic features of Down syndrome (DS) as well as severe conotruncal cardiac anomalies, including pulmonary atresia with ventricular septal defect (tetralogy of Fallot with pulmonary atresia), confluent pulmonary arteries, a large left-sided ductus arteriosus, left aortic arch, aberrant right subclavian artery, and secundum atrial septal defect. Cytogenetic and fluorescence in situ hybridization (FISH) analysis was carried out on peripheral blood lymphocytes and skin fibroblasts using probes specific for the chromosomal loci 21q22.13 to 21q22.2 and locus 22q11.2. This revealed 47,XX+21/46,XX mosaicism at a rate of 15:85 and the micro-deletion 22q11.2 (del22q11.2). Some patients'congenital cardiac anomalies are atypical for the type of mosaicism or aneuploidy. The case suggests that association of del22q11.2 should be considered in patients with chromosomal mosaicism or aneuploidy who also have particular conotruncal cardiac defects. FAU - Derbent, Murat AU - Derbent M AD - Department of Pediatrics, Baskent University Faculty of Medicine, Ankara, Turkey. muratder@superonline.com FAU - Saygili, Arda AU - Saygili A FAU - Yilmaz, Zerrin AU - Yilmaz Z FAU - Kervancioglu, Mehmet AU - Kervancioglu M FAU - Balci, Sevim AU - Balci S FAU - Tokel, Kursat AU - Tokel K LA - eng PT - Case Reports PT - Journal Article PL - United States TA - Am J Med Genet JT - American journal of medical genetics JID - 7708900 SB - IM MH - *Chromosomes, Human, Pair 22 MH - *Down Syndrome MH - Humans MH - In Situ Hybridization, Fluorescence MH - Infant, Newborn MH - Male MH - *Mosaicism EDAT- 2002/09/20 10:00 MHDA- 2003/03/05 04:00 CRDT- 2002/09/20 10:00 PHST- 2002/09/20 10:00 [pubmed] PHST- 2003/03/05 04:00 [medline] PHST- 2002/09/20 10:00 [entrez] AID - 10.1002/ajmg.10545 [doi] PST - ppublish SO - Am J Med Genet. 2002 Sep 15;112(1):99-102. doi: 10.1002/ajmg.10545.