MedGen

Otosclerosis-12 (OTSC12) is characterized by progressive hearing loss resulting from abnormal bone remodeling (summary by Drabkin et al., 2024). For a general phenotypic description and discussion of genetic heterogeneity of otosclerosis, see OTSC1 (166800). [from OMIM]

Coffin-Siris syndrome is a congenital malformation syndrome characterized by developmental delay, intellectual disability, coarse facial features, feeding difficulties, and hypoplastic or absent fifth fingernails and fifth distal phalanges. Other more variable features may also occur. Patients with SMARCA4 mutations may have less coarse craniofacial appearances and fewer behavioral abnormalities than Coffin-Siris patients with mutations in other genes (summary by Kosho et al., 2014). For a general phenotypic description and a discussion of genetic heterogeneity of Coffin-Siris syndrome, see CSS1 (135900). [from OMIM]

Rhabdoid tumor predisposition syndrome-2 (RTPS2) is an autosomal dominant cancer predisposition syndrome characterized by the onset in infancy, childhood, or young adulthood of various poorly differentiated tumors. Classically, tumors that arise in the central nervous system are referred to as atypical teratoid/rhabdoid tumors, whereas those arising in the kidney or other extracranial sites are referred to as malignant rhabdoid tumors. Tumors may also present as small cell carcinoma of the ovary, hypercalcemic type (SCCOHT), also known as malignant rhabdoid tumor of the ovary (MRTO). All of these tumors are highly aggressive and often fatal (summary by Foulkes et al., 2014). See also RTPS1 (609322), which is caused by mutation in the SMARCB1 gene (601607) on chromosome 22q11. [from OMIM]