A Balanced Reciprocal Translocation t(2;9)(p25;q13) Disrupting the < b > < i > LINC00299 < /i > < /b > Gene in a Patient with Intellectual Disability

Long intergenic noncoding RNAs (lincRNAs) are a class of noncoding RNAs implicated in several biological processes. LincRNA 299 (LINC00299) maps to 2p25.1 and its function is still unknown. However, this gene has been proposed as a candidate for intellectual disability (ID) in a patient with a balanced translocation where the breakpoint disrupted its ORF. Here, we describe a new case ofLINC00299 disruption associated with ID. The individual, a 42-year-old woman, was referred to the clinical geneticist because of her son who had severe syndromic ID. G-banding and chromosomal microarray analysis were performed. Karyotyping of the boy revealed an extranumerary derivative chromosome identified as an unbalanced translocation between chromosomes 2 and 9 of maternal origin. The mother's karyotype showed a balanced translocation 46,XX,t(2;9)(p25;q13). Chromosomal microarray indicated a disruption ofLINC00299. These data corroborate the role ofLINC00299 as a causative gene for ID and broadens the spectrum ofLINC00299-related phenotypes.Mol Syndromol
Source: Molecular Syndromology - Category: Molecular Biology Source Type: research