Description : Birt-Hogg-Dube syndrome (BHD; 135150) is an allelic disorder characterized by spontaneous
pneumothorax, as well as fibrofolliculomas of the skin and increased risk of renal
and colonic tumors. Gunji et al. (2007) suggested that isolated primary spontaneous
pneumothorax associated with FLCN mutations may be part of the clinical spectrum of
BHD, showing incomplete disease penetrance. Spontaneous pneumothorax is a complication
of certain heritable disorders of connective tissue, particularly the Marfan syndrome
(154700) and the Ehlers-Danlos syndrome (see, e.g., 130000). Pulmonary bullae can
also occur with alpha-1-antitrypsin deficiency (613490).;
Inheritance : Autosomal dominant;
Molecular basis : Caused by mutation in the folliculin gene (FLCN, 607273.0009);