PMID- 21664500 OWN - NLM STAT- MEDLINE DCOM- 20111031 LR - 20111117 IS - 1878-0849 (Electronic) IS - 1769-7212 (Linking) VI - 54 IP - 4 DP - 2011 Jul-Aug TI - Three new cases with a mosaicism involving a normal cell line and a cryptic unbalanced autosomal reciprocal translocation. PG - e409-12 LID - 10.1016/j.ejmg.2011.05.002 [doi] AB - Mosaicism involving a normal cell line and an unbalanced autosomal translocation are rare. In this study we present three new cases with such a mosaicism, which were detected by Single Nucleotide Polymorphism (SNP) array analysis in our routine diagnostic setting. These cases were further characterized using Fluorescence in situ Hybridisation (FISH) analysis and conventional karyotyping. The first case is a mentally retarded male who carries an unbalanced translocation in 87% of his cells. The phenotypically normal mother carries the balanced form of the translocation in all her cells. The second case is a phenotypically normal female who has an unbalanced translocation in 52% of her cells. The inheritance could not be determined. The third case is a female referred for Rubinstein-Taybi syndrome who carries an unbalanced translocation in 60% of her cells. Both parents of this case showed a normal karyotype. The mechanisms that might be responsible for these mosaic karyotypes are discussed. Furthermore, we demonstrate that high-resolution whole-genome SNP array is a powerful tool to reveal cryptic unbalanced translocations and mosaicisms, including the more rare cases. CI - Copyright (c) 2011 Elsevier Masson SAS. All rights reserved. FAU - Gijsbers, Antoinet C J AU - Gijsbers AC AD - Center for Human and Clinical Genetics, Leiden University Medical Center (LUMC), Leiden, The Netherlands. a.c.j.gijsbers@lumc.nl FAU - Dauwerse, Johannes G AU - Dauwerse JG FAU - Bosch, Cathy A J AU - Bosch CA FAU - Boon, Elles M J AU - Boon EM FAU - van den Ende, Wilco AU - van den Ende W FAU - Kant, Sarina G AU - Kant SG FAU - Hansson, Kerstin M B AU - Hansson KM FAU - Breuning, Martijn H AU - Breuning MH FAU - Bakker, Egbert AU - Bakker E FAU - Ruivenkamp, Claudia A L AU - Ruivenkamp CA LA - eng PT - Case Reports PT - Journal Article DEP - 20110523 PL - Netherlands TA - Eur J Med Genet JT - European journal of medical genetics JID - 101247089 SB - IM MH - Adult MH - Alleles MH - Chromosome Aberrations MH - Female MH - Humans MH - Intellectual Disability/genetics MH - Karyotyping MH - Male MH - Middle Aged MH - Models, Genetic MH - *Mosaicism MH - Pedigree MH - Phenotype MH - Polymorphism, Single Nucleotide/genetics MH - *Translocation, Genetic EDAT- 2011/06/15 06:00 MHDA- 2011/11/01 06:00 CRDT- 2011/06/14 06:00 PHST- 2011/02/16 00:00 [received] PHST- 2011/05/04 00:00 [accepted] PHST- 2011/06/14 06:00 [entrez] PHST- 2011/06/15 06:00 [pubmed] PHST- 2011/11/01 06:00 [medline] AID - S1769-7212(11)00064-4 [pii] AID - 10.1016/j.ejmg.2011.05.002 [doi] PST - ppublish SO - Eur J Med Genet. 2011 Jul-Aug;54(4):e409-12. doi: 10.1016/j.ejmg.2011.05.002. Epub 2011 May 23.