A Study to Evaluate the Long-term Safety and Tolerability of Admilparant in Participants with Pulmonary Fibrosis.

Prior treatment

• Participant had a lung surgery to remove part of the lung or had a lung transplant in the past.

Other illness

• Participant who shows symptoms of heart failure at rest.
• Participant has pulmonary arterial hypertension and who was taking one medication but now needs more than one.

• Participants must have finished taking study drug and completed the end of treatment visit in either IM027068 or IM0271015 study.
• Participants with IPF must be at least 40 years old and those with PPF must be at least 21 years old when they sign the consent form.
• Women who could get pregnant must use a very effective form of birth control, ideally one that doesn’t rely on the user to work properly. They also need to take a urine or blood pregnancy test on Day 1 to make sure they are not pregnant.
• Men who are having sex with women who can get pregnant must agree to use condoms.