Could a lung drug fix blood vessel damage in takayasu arteritis?

This study tests whether adding pirfenidone, a drug used for lung and liver scarring, to standard treatment can improve blood vessel damage in people with Takayasu arteritis. The disease causes blood vessels to thicken and narrow, which standard anti-inflammatory drugs don't fully stop. About 92 adults aged 18-60 will receive either pirfenidone or a placebo, and researchers will check if the drug helps reduce vessel wall thickness and improve symptoms.