When AMs were cultured with TL1A, TIMP-1 mRNA levels significant decreased only in AMs obtained from patients with inactive sarcoidosis (3.1 ± 1.1 and 1.8 ± 0.3, in absence and presence of TL1A, respectively; p < 0.05), whereas we did not point out any variation of TIMP-1 mRNA levels in AMs obtained from patients with active sarcoidosis (1.2 ± 0.3 and 1.1 ± 0.4, in absence and presence of TL1A, respectively; p: not significant). Here, TIMP1 is linked to sarcoidosis.