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- W2890774203 abstract "Congenital conotruncal heart defects (CCHD) are a subset of serious congenital heart defects (CHD) of the cardiac outflow tracts or great arteries. Its frequency is estimated in 1/1000 live births, accounting for approximately 10⁻30% of all CHD cases. Chromosomal abnormalities and copy number variants (CNVs) contribute to the disease risk in patients with syndromic and/or non-syndromic forms. Although largely studied in several populations, their frequencies are barely reported for Latin American countries. The aim of this study was to analyze chromosomal abnormalities, 22q11 deletions, and other genomic imbalances in a group of Argentinean patients with CCHD of unknown etiology. A cohort of 219 patients with isolated CCHD or associated with other major anomalies were referred from different provinces of Argentina. Cytogenetic studies, Multiplex-Ligation-Probe-Amplification (MLPA) and fluorescent in situ hybridization (FISH) analysis were performed. No cytogenetic abnormalities were found. 22q11 deletion was found in 23.5% of the patients from our cohort, 66% only had CHD with no other major anomalies. None of the patients with transposition of the great vessels (TGV) carried the 22q11 deletion. Other 4 clinically relevant CNVs were also observed: a distal low copy repeat (LCR)D-E 22q11 duplication, and 17p13.3, 4q35 and TBX1 deletions. In summary, 25.8% of CCHD patients presented imbalances associated with the disease." @default.
- W2890774203 created "2018-09-27" @default.
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- W2890774203 date "2018-09-11" @default.
- W2890774203 modified "2023-10-17" @default.
- W2890774203 title "Genetic Imbalances in Argentinean Patients with Congenital Conotruncal Heart Defects" @default.
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- W2890774203 doi "https://doi.org/10.3390/genes9090454" @default.
- W2890774203 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6162499" @default.
- W2890774203 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30208644" @default.
- W2890774203 hasPublicationYear "2018" @default.