Open AccessA Rare Case of Mosaic Unbalanced Non-Robertsonian Translocation Involving Chromosomes 15 and 22 with Congenital Abnormalities in Monozygotic Twins
Author(s) -
Emine İkbal Atlı,
Engin Atlı,
Sinem Yalçıntepe,
Hakan Gürkan
Publication year - 2019
Publication title -
molecular syndromology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.609
H-Index - 36
eISSN - 1661-8777
pISSN - 1661-8769
DOI - 10.1159/000505004
Subject(s) - chromosomal translocation , karyotype , robertsonian translocation , breakpoint , centromere , genetics , cytogenetics , biology , mosaic , phenotype , chromosome , gene , history , archaeology
Balanced de novo non-robertsonian translocations (non-RTs), which involve acrocentric chromosomes, are rare findings in clinical cytogenetics and may be associated with an abnormal phenotype. These translocations, detected by conventional karyotyping, are found in approximately 1:1,000 neonates. In most of these cases, one of the parents carries the same translocation. In this study, we report a rare non-RT involving chromosomes 15 and 22 defined as 45, XX, -22,der(15;22)t(15;22)/46, XX, der(15)t(15;22),der(22). To our knowledge, this is the first report of a non-RT t(15;22) with these breakpoints.