title: Segregation analysis of mandibular prognathism in Libya.
abstract: The etiology of mandibular prognathism has been attributed to various genetic inheritance patterns and some environmental factors. The variation in inheritance patterns can be partly due to the use of different statistical approaches in the respective studies. The objective of this study was to investigate the role of genetic influences in the etiology of this trait. We performed segregation analysis on 37 families of patients currently being treated for mandibular prognathism. Mandibular prognathism was treated as a qualitative trait, with cephalometric radiographs, dental models, and photographs used to verify diagnosis. Segregation analysis of a prognathic mandible in the entire dataset supported a transmissible Mendelian major effect, with a dominant mode of inheritance determined to be the most parsimonious.
authors.affiliation: Department of Human Genetics, Graduate School of Public Health, 500 Cellomics Bldg., University of Pittsburgh, 100 Technology Dr., Pittsburgh, PA 15219, USA.
authors.forename: A A
authors.initials: AA
authors.lastname: El-Gheriani
authors.forename: B S
authors.initials: BS
authors.lastname: Maher
authors.forename: A S
authors.initials: AS
authors.lastname: El-Gheriani
authors.forename: J J
authors.initials: JJ
authors.lastname: Sciote
authors.forename: F A
authors.initials: FA
authors.lastname: Abu-Shahba
authors.forename: R
authors.initials: R
authors.lastname: Al-Azemi
authors.forename: M L
authors.initials: ML
authors.lastname: Marazita
mesh_terms: D000328:Adult; D002508:Cephalometry; D020090:Chromosome Segregation; D005192:Family Health; D005260:Female; D005799:Genes, Dominant; D006801:Humans; D008002:Libya; D016013:Likelihood Functions; D008297:Male; D008313:Malocclusion, Angle Class III / Q000235:genetics*; D008334:Mandible / Q000002:abnormalities*; D008875:Middle Aged; D008957:Models, Genetic; D011378:Prognathism / Q000235:genetics*; D019655:Quantitative Trait, Heritable