Case report
Open access
Sep 2026
Novel TCOF1 Frameshift Variant and Phenotypic Heterogeneity in a Chinese Family With Treacher Collins Syndrome
Treacher Collins syndrome (TCS) is a congenital craniofacial disorder characterized by malar and mandibular hypoplasia, downward‐slanting palpebral fissures, and conductive hearing loss. Pathogenic variants in TCOF1 account for most cases, with POLR1D, POLR1C, and POLR1B also implicated.
Fei-Yang Fan, Ying Chen, Tian-Yu Zhang et al.
· Molecular Genetics & Genomic... · 0 citations