Alternative titles and symbols : Craniosynostosis, metopic;
Description : Individuals with trigonocephaly have a keel-shaped forehead with wide biparietal diameter,
resulting in a triangular shape of the head. Trigonocephaly results from premature
closure of the metopic sutures and usually occurs sporadically (summary by Frydman
et al., 1984). - Genetic Heterogeneity of Isolated Trigonocephaly Also see trigonocephaly-2
(TRIGNO2; 614485), caused by mutation in the;
Inheritance : Autosomal dominant;
Molecular basis : Caused by mutation in the fibroblast growth factor receptor 1 gene (FGFR1, 136350.0011);