ArticleBMC pediatrics2023
Exome and genome sequencing to unravel the precise breakpoints of partial trisomy 6q and partial Monosomy 2q.
Article in BMC pediatrics, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 2 citations in OpenAlex.
- Prenatal diagnosis strategies and pregnancy outcomes in the Luohe region of China in the context of increasing maternal age.Scientific reports · 2026Article
- Optical Genome Mapping Identifies a Novel Unbalanced Translocation Between Chromosomes 4q and 6q Leading to Feeding Difficulties and Hypotonia in a Neonate: A Case Report.The application of clinical genetics · 2024Article
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8 authors at 3 institutions in 1 country.
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Abstract
backgroundPatients with complex phenotypes and a chromosomal translocation are particularly challenging, since several potentially pathogenic mechanisms need to be investigated. CASE PRESENTATION: Here, we combined exome and genome sequencing techniques to identify the precise breakpoints of heterozygous microduplications in the 6q25.3-q27 region and microdeletions in the 2q37.1-q37.3 region in a proband. The 5-year-old girl exhibited a severe form of congenital cranial dysinnervation disorder (CCDD) in addition to skeletal dysmorphism anomalies and severe intellectual disability. This is the second case affecting chromosomes 2q and 6q. The individual's karyotype showed an unbalanced translocation 46,XX,del(2)t(2;6)(q37.1;q25.3), which was inherited from her unaffected father [46,XY,t(2;6)(q37.1;q25.3)]. We also obtained the precise breakpoints of a de novo heterozygous copy number deletion [del(2)(q37.1q37.3)chr2:g.232963568_24305260del] and a copy number duplication [dup(6)(q25.3q27)chr6:g.158730978_170930050dup]. The parental origin of the observed balanced translocation was not clear because the parents declined genetic testing.
conclusionPatients with a 2q37 deletion and 6q25.3 duplication may exhibit severe significant neurological and skeletal dysmorphisms, and the utilization of exome and genome sequencing techniques has the potential to unveil the entire translocation of the CNV and the precise breakpoint.
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