168
Participants
Start Date
December 1, 2022
Primary Completion Date
March 4, 2023
Study Completion Date
March 30, 2023
Pirfenidone Oral Product
Pirfenidone 200mg tid for first week; subsequently, 400mg tid for 2 months
Pirfenidone placebo
Pirfenidone placebo
China-Japan Friendship Hospital, Beijing
Capital Medical University
OTHER