Fig. 1

Pedigree of Family X with cases of pulmonary sarcoidosis. Circles represent females; squares represent males. Slashed symbol indicate deceased subjects. Individuals with confirmed sarcoidosis are indicated in black symbols. Relatives in grey symbols underwent a workup diagnosis (clinical examination, blood tests and chest X ray) that allowed to exclude sarcoidosis. The current age is indicated below each symbol. Numbers beside each symbol correspond to the individuals described in Table 1. The directional arrow indicates the index case. His maternal grand-mother died in 1958. She was known to have recurrent asthma attacks. No medical file is available for this woman