Notes: 6α-methyl-11β-hydroxy Progesterone is an anti-inflammatory steroid.{40276} It is a hydroxylated progesterone that lacks progestational and androgenic activity. It inhibits phytohemagglutinin-activated T cell proliferation in vitro with an IC50 value of 2.9 μg/ml.{40277} 6α-methyl-11β-hydroxy Progesterone also inhibits TNF-α production in LPS-stimulated THP-1 cells (IC50 = 30.54 μg/ml). Topical formulations containing 6α-methyl-11β-hydroxyprogesterone have been used to treat inflammatory ocular diseases.{40276}