In a study on sarcoidosis, TGFB genetic polymorphisms were examined in patients with acute or self-remitting pulmonary sarcoidosis (n=50), chronic disease with fibrosis (n=24) and those without fibrosis (n=34) compared to those with Lofgren syndrome (n=46) and a healthy control group (n=315). This evidence concerns the gene TGFB1 and fibrosis.