Mandibulofacial Acrofacial dysostosis
Gene: SF3B2
Twenty individuals from seven families reported with de novo or transmitted haploinsufficient variants in SF3B2. Affected individuals had mandibular hypoplasia, microtia, facial and preauricular tags, epibulbar dermoids, lateral oral clefts in addition to skeletal and cardiac abnormalities.
Targeted morpholino knockdown of SF3B2 in Xenopus resulted in disruption of cranial neural crest precursor formation and subsequent craniofacial cartilage defects, supporting a link between spliceosome mutations and impaired neural crest development in congenital craniofacial disease.
The families were ascertained from a cohort and the authors suggest that haploinsufficient variants in SF3B2 are the most prevalent genetic cause of CFM, explaining ~3% of sporadic and ~25% of familial cases.
Sources: LiteratureCreated: 7 Aug 2021, 2:11 a.m.
Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Phenotypes
Craniofacial microsomia
Publications
Phenotypes for gene: SF3B2 were changed from Craniofacial microsomia to Craniofacial microsomia, MIM#164210
Gene: sf3b2 has been classified as Green List (High Evidence).
Gene: sf3b2 has been classified as Green List (High Evidence).
gene: SF3B2 was added gene: SF3B2 was added to Mandibulofacial Acrofacial dysostosis. Sources: Literature Mode of inheritance for gene: SF3B2 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted Publications for gene: SF3B2 were set to 34344887 Phenotypes for gene: SF3B2 were set to Craniofacial microsomia Review for gene: SF3B2 was set to GREEN