Because of a lapse in government funding, the information on this
website may not be up to date, transactions submitted via the
website may not be processed, and the agency may not be able to
respond to inquiries until appropriations are enacted. The NIH
Clinical Center (the research hospital of NIH) is open. For more
details about its operating status, please visit
cc.nih.gov. Updates
regarding government operating status and resumption of normal
operations can be found at
opm.gov.
Familial cylindromatosis MeSH Supplementary Concept Data 2026
Familial cylindromatosis (OMIM: 132700), Brooke-Spiegler syndrome (BRSS) (OMIM: 605041), and multiple familial trichoepithelioma 1 (MFT1) (OMIM: 601606) were originally described as distinct clinical entities. Patients with BRSS develop multiple skin appendage neoplasms including cylindromas, trichoepitheliomas, and spiradenomas. Patients with familial cylindromatosis have only cylindromas, and those with MFT1 have only trichoepitheliomas. However, because these disorders show overlapping phenotypic features, and because different manifestations of each have been described within a single family, many consider these disorders to represent a phenotypic spectrum of a single disease entity. All are caused by mutations in the CYLD gene.