A bronchiectasis endotype associated with heritable connective tissue disorder features, characterized by a tall asthenic morphotype with high rates of scoliosis, pectus excavatum, mitral valve prolapse, and dural ectasia. This endotype is associated with susceptibility to pulmonary nontuberculous mycobacterial infection and may involve genetic variation in connective tissue and transforming growth factor-beta (TGF-beta)-related pathway genes. The disease or phenotype is EFO_0920041 (heritable connective tissue disorder-associated bronchiectasis). Also known as: connective tissue-predominant bronchiectasis.