IL10 and granulomatosis with polyangiitis: Clinical trials with human synthetic interleukin-10 are still in the early phase, such as phase 1 trial with SCH 52000 in patients with Wegener's granulomatosis, phase 2 trial with RN1003 for scar reduction, phase 2 trial with recombinant human interleukin-10 for psoriasis, and phase 2 trial with Tenovil TM in prevention of post-ERCP acute pancreatitis.