This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
Baricitinib was approved by FDA recently for 
Select and explain. 
A. Osteo ahritis, B. R ahritis, C. Cl difficale, D. Gout
B: R ahritis
Answer: B: R ahritis 
Explanation: barcitinib is a janus kinase inhibitoe JAK . Ihibits the activity of JAK 1 and JAK 2 enzymes interfering with JAK STAT pathway.