{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T19:10:02Z","timestamp":1760037002005,"version":"build-2065373602"},"reference-count":30,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2025,9,23]],"date-time":"2025-09-23T00:00:00Z","timestamp":1758585600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Marmara University, Scientific Research Projects Department","award":["10935"],"award-info":[{"award-number":["10935"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Genes"],"abstract":"<jats:p>Background\/Objectives: Anterior open bite is a multifact orial malocclusion influenced by genetic and environmental factors. Variants in the Collagen type I, alpha 1 (COL1A1) gene, particularly rs1800012, have been implicated in bone quality, but their role in craniofacial anomalies remains unclear. Methods: A case\u2013control study was conducted with 60 participants (30 anterior open bite cases; 30 matched controls). DNA was extracted from buccal swabs, and rs1800012 genotyping was performed using TaqMan assays. Genotype and allele distributions were compared with chi-square and Fisher\u2019s exact tests; Hardy\u2013Weinberg equilibrium was assessed in controls. Results: Genotype (GG\/GT\/TT: 53.3\/40.0\/6.7% vs. 60.0\/33.3\/6.7%) and allele (T allele: 26.7% vs. 23.3%) frequencies did not differ significantly between cases and controls. No association was detected under additive, dominant, or recessive models (all p &gt; 0.05). Wide confidence intervals indicated limited precision of effect estimates. Conclusions: This study provides no evidence of association between COL1A1 rs1800012 and anterior open bite in this Turkish cohort. The relatively small sample size, the rarity of the TT genotype, and the multifactorial nature of craniofacial development represent important limitations. Larger, multi-gene, and functionally integrated studies are required to clarify the genetic architecture of open bite malocclusion.<\/jats:p>","DOI":"10.3390\/genes16101122","type":"journal-article","created":{"date-parts":[[2025,9,23]],"date-time":"2025-09-23T10:27:53Z","timestamp":1758623273000},"page":"1122","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Lack of Association Between COL1A1 rs1800012 Polymorphism and Anterior Open Bite Malocclusion in a Turkish Case\u2013Control Cohort"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2064-6613","authenticated-orcid":false,"given":"Tolga","family":"Polat","sequence":"first","affiliation":[{"name":"Department of Basic Medical Sciences, Faculty of Dentistry, Marmara University, 34854 Istanbul, T\u00fcrkiye"},{"name":"Department of Basic Medical Sciences, Institute of Health Sciences, Marmara University, 34854 Istanbul, T\u00fcrkiye"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4085-6159","authenticated-orcid":false,"given":"\u00d6zlem \u00d6zge","family":"Y\u0131lmaz","sequence":"additional","affiliation":[{"name":"Department of Basic Medical Sciences, Faculty of Dentistry, Marmara University, 34854 Istanbul, T\u00fcrkiye"},{"name":"Department of Basic Medical Sciences, Institute of Health Sciences, Marmara University, 34854 Istanbul, T\u00fcrkiye"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5052-2320","authenticated-orcid":false,"given":"Elvan","family":"\u00d6nem \u00d6zbilen","sequence":"additional","affiliation":[{"name":"Department of Orthodontics, Faculty of Dentistry, Marmara University, 34854 Istanbul, T\u00fcrkiye"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5271-7917","authenticated-orcid":false,"given":"Beste","family":"Tacal Aslan","sequence":"additional","affiliation":[{"name":"Department of Basic Medical Sciences, Faculty of Dentistry, Marmara University, 34854 Istanbul, T\u00fcrkiye"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,9,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Lone, I.M., Zohud, O., Midlej, K., Paddenberg, E., Krohn, S., Kirschneck, C., Proff, P., Watted, N., and Iraqi, F.A. 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