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de Wallau MB, Xavier AC, Moreno CA, Kim CA, Mendes EL, Ribeiro EM, Oliveira A, Félix TM, Fett-Conte AC, Bonadia LC, Correia-Costa GR, Monlleó IL, Gil-da-Silva-Lopes VL, Vieira TP. 22q11.2 Deletion Syndrome: Influence of Parental Origin on Clinical Heterogeneity. Genes (Basel) 2024; 15:518. [PMID: 38674452 PMCID: PMC11050591 DOI: 10.3390/genes15040518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 04/18/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024] Open
Abstract
22q11.2 deletion syndrome (22q11.2DS) shows significant clinical heterogeneity. This study aimed to explore the association between clinical heterogeneity in 22q11.2DS and the parental origin of the deletion. The parental origin of the deletion was determined for 61 individuals with 22q11.2DS by genotyping DNA microsatellite markers and single-nucleotide polymorphisms (SNPs). Among the 61 individuals, 29 (47.5%) had a maternal origin of the deletion, and 32 (52.5%) a paternal origin. Comparison of the frequency of the main clinical features between individuals with deletions of maternal or paternal origin showed no statistically significant difference. However, Truncus arteriosus, pulmonary atresia, seizures, and scoliosis were only found in patients with deletions of maternal origin. Also, a slight difference in the frequency of other clinical features between groups of maternal or paternal origin was noted, including congenital heart disease, endocrinological alterations, and genitourinary abnormalities, all of them more common in patients with deletions of maternal origin. Although parental origin of the deletion does not seem to contribute to the phenotypic variability of most clinical signs observed in 22q11.2DS, these findings suggest that patients with deletions of maternal origin could have a more severe phenotype. Further studies with larger samples focusing on these specific features could corroborate these findings.
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Affiliation(s)
- Melissa Bittencourt de Wallau
- Medical Genetics and Genomic Medicine, Department of Translational Medicine, School of Medical Sciences, State University of Campinas, Campinas 13083-887, São Paulo, Brazil; (M.B.d.W.); (C.A.M.); (L.C.B.); (G.R.C.-C.); (V.L.G.-d.-S.-L.)
| | | | - Carolina Araújo Moreno
- Medical Genetics and Genomic Medicine, Department of Translational Medicine, School of Medical Sciences, State University of Campinas, Campinas 13083-887, São Paulo, Brazil; (M.B.d.W.); (C.A.M.); (L.C.B.); (G.R.C.-C.); (V.L.G.-d.-S.-L.)
| | - Chong Ae Kim
- Instituto da Criança, Hospital de Clínicas, FMUSP, São Paulo 05403-000, São Paulo, Brazil;
| | - Elaine Lustosa Mendes
- Serviço de Genética do Hospital de Clínicas da UFPR, Curitiba 80060-900, Paraná, Brazil;
| | - Erlane Marques Ribeiro
- Serviço de Genética do Hospital Infantil Albert Sabin—HIAS, Fortaleza 60410-794, Ceará, Brazil;
| | - Amanda Oliveira
- Centro de Atenção aos Defeitos da Face—CADEFI, Recife 50060-293, Pernambuco, Brazil;
| | - Têmis Maria Félix
- Serviço de Genética Médica do Hospital de Clínicas de Porto Alegre—HCPA, Porto Alegre 90035-903, Rio Grande do Sul, Brazil;
| | - Agnes Cristina Fett-Conte
- Serviço de Genética da Faculdade de Medicina de São José do Rio Preto (FAMERP/FUNFARME), São José do Rio Preto 15090-000, São Paulo, Brazil;
| | - Luciana Cardoso Bonadia
- Medical Genetics and Genomic Medicine, Department of Translational Medicine, School of Medical Sciences, State University of Campinas, Campinas 13083-887, São Paulo, Brazil; (M.B.d.W.); (C.A.M.); (L.C.B.); (G.R.C.-C.); (V.L.G.-d.-S.-L.)
| | - Gabriela Roldão Correia-Costa
- Medical Genetics and Genomic Medicine, Department of Translational Medicine, School of Medical Sciences, State University of Campinas, Campinas 13083-887, São Paulo, Brazil; (M.B.d.W.); (C.A.M.); (L.C.B.); (G.R.C.-C.); (V.L.G.-d.-S.-L.)
| | - Isabella Lopes Monlleó
- Serviço de Genética Médica do Hospital Universitário Prof. Alberto Antunes (HUPAA), Faculdade de Medicina, Universidade Federal de Alagoas (UFAL), Maceió 57072-900, Alagoas, Brazil;
| | - Vera Lúcia Gil-da-Silva-Lopes
- Medical Genetics and Genomic Medicine, Department of Translational Medicine, School of Medical Sciences, State University of Campinas, Campinas 13083-887, São Paulo, Brazil; (M.B.d.W.); (C.A.M.); (L.C.B.); (G.R.C.-C.); (V.L.G.-d.-S.-L.)
| | - Társis Paiva Vieira
- Medical Genetics and Genomic Medicine, Department of Translational Medicine, School of Medical Sciences, State University of Campinas, Campinas 13083-887, São Paulo, Brazil; (M.B.d.W.); (C.A.M.); (L.C.B.); (G.R.C.-C.); (V.L.G.-d.-S.-L.)
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Nappi F. In-Depth Genomic Analysis: The New Challenge in Congenital Heart Disease. Int J Mol Sci 2024; 25:1734. [PMID: 38339013 PMCID: PMC10855915 DOI: 10.3390/ijms25031734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 01/25/2024] [Accepted: 01/27/2024] [Indexed: 02/12/2024] Open
Abstract
The use of next-generation sequencing has provided new insights into the causes and mechanisms of congenital heart disease (CHD). Examinations of the whole exome sequence have detected detrimental gene variations modifying single or contiguous nucleotides, which are characterised as pathogenic based on statistical assessments of families and correlations with congenital heart disease, elevated expression during heart development, and reductions in harmful protein-coding mutations in the general population. Patients with CHD and extracardiac abnormalities are enriched for gene classes meeting these criteria, supporting a common set of pathways in the organogenesis of CHDs. Single-cell transcriptomics data have revealed the expression of genes associated with CHD in specific cell types, and emerging evidence suggests that genetic mutations disrupt multicellular genes essential for cardiogenesis. Metrics and units are being tracked in whole-genome sequencing studies.
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Affiliation(s)
- Francesco Nappi
- Department of Cardiac Surgery, Centre Cardiologique du Nord, 93200 Saint-Denis, France
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