{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T20:01:32Z","timestamp":1791489692705,"version":"4.3.4"},"reference-count":70,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2026,2,21]],"date-time":"2026-02-21T00:00:00Z","timestamp":1771632000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Genes"],"abstract":"<jats:p>Background: Neurodevelopmental disorders (NDDs) are a heterogeneous group of conditions characterized by cognitive, behavioral, and developmental impairments, frequently linked to structural genomic alterations. Copy number variants (CNVs) involving chromosome 16, particularly the short arm 16p, are recognized contributors to neurodevelopmental variability. Despite increasing international evidence, data from Italian clinical cohorts are still limited. Methods: We investigated 1200 patients referred for genetic evaluation due to suspected NDDs, including autism spectrum disorder (ASD), intellectual disability (ID), global developmental delay, and language impairment. All individuals underwent array comparative genomic hybridization (a-CGH) analysis, and identified variants were correlated with detailed clinical, cognitive, and behavioral assessments. The analysis focused on recurrent CNVs at 16p11.2, 16p13.3, and 16p13.11, regions containing dosage-sensitive genes relevant to neurodevelopment. Results: CNVs involving the 16p region were identified in 96 patients (8% of the cohort), encompassing both deletions and duplications. Deletions were mainly associated with developmental delay, language deficits, and ASD-related features, whereas duplications were more frequently linked to behavioral dysregulation, attentional deficits, and variable cognitive impairment. Marked phenotypic variability was observed among individuals carrying similar CNVs, suggesting the contribution of modifying genetic or environmental factors. In a subset of patients, additional CNVs were identified, potentially exacerbating clinical severity, consistent with the two-hit model. Conclusions: This study confirms a strong association between recurrent 16p CNVs and a wide spectrum of neurodevelopmental phenotypes in an Italian clinical cohort. The findings emphasize the diagnostic utility of systematic genomic screening and the importance of an integrated genotype\u2013phenotype approach to improve clinical interpretation, management, and genetic counseling in NDDs.<\/jats:p>","DOI":"10.3390\/genes17020247","type":"journal-article","created":{"date-parts":[[2026,2,23]],"date-time":"2026-02-23T10:00:52Z","timestamp":1771840852000},"page":"247","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Clinical Insights into the Neurodevelopmental Impact of 16p CNVs in an Italian Clinical Cohort"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-1072-3763","authenticated-orcid":false,"given":"Ilaria","family":"La Monica","sequence":"first","affiliation":[{"name":"Department of Molecular Medicine and Medical Biotechnologies, Federico II University, Via Sergio Pansini 5, 80131 Naples, Italy"},{"name":"CEINGE-Biotecnologie Avanzate Franco Salvatore, Via G. Salvatore 486, 80145 Naples, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-7321-9799","authenticated-orcid":false,"given":"Maria Rosaria","family":"Di Iorio","sequence":"additional","affiliation":[{"name":"CEINGE-Biotecnologie Avanzate Franco Salvatore, Via G. Salvatore 486, 80145 Naples, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Antonia","family":"Sica","sequence":"additional","affiliation":[{"name":"Department of Molecular Medicine and Medical Biotechnologies, Federico II University, Via Sergio Pansini 5, 80131 Naples, Italy"},{"name":"CEINGE-Biotecnologie Avanzate Franco Salvatore, Via G. Salvatore 486, 80145 Naples, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6894-9317","authenticated-orcid":false,"given":"Lucio","family":"Pastore","sequence":"additional","affiliation":[{"name":"Department of Molecular Medicine and Medical Biotechnologies, Federico II University, Via Sergio Pansini 5, 80131 Naples, Italy"},{"name":"CEINGE-Biotecnologie Avanzate Franco Salvatore, Via G. Salvatore 486, 80145 Naples, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3884-1043","authenticated-orcid":false,"given":"Barbara","family":"Lombardo","sequence":"additional","affiliation":[{"name":"Department of Molecular Medicine and Medical Biotechnologies, Federico II University, Via Sergio Pansini 5, 80131 Naples, Italy"},{"name":"CEINGE-Biotecnologie Avanzate Franco Salvatore, Via G. Salvatore 486, 80145 Naples, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,2,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Rincic, M., Brecevic, L., Liehr, T., Gotovac Jercic, K., Doder, I., and Borovecki, F. (2025). Customized Chromosomal Microarrays for Neurodevelopmental Disorders. Genes, 16.","DOI":"10.3390\/genes16080868"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"261","DOI":"10.1146\/annurev-genom-121222-120601","article-title":"Copy Number Variants: Deletion and Duplication Syndromes","volume":"26","author":"Harner","year":"2025","journal-title":"Annu. Rev. Genom. Hum. Genet."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Ranieri, A., La Monica, I., Di Iorio, M.R., Lombardo, B., and Pastore, L. (2024). Genetic Alterations in a Large Population of Italian Patients Affected by Neurodevelopmental Disorders. 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