We are conducting a study to find better ways to detect *pulmonary hypertension (PH)* early in people with *interstitial lung disease (ILD)*. ILD is a group of lung diseases causing scarring and lung tissue damage. PH is a condition where the blood pressure in the lungs' blood vessels is too high. This study involves two visits: a Screening Visit and Study Visit 1. During these visits, we will do several tests to see if they help in predicting PH. These tests include lung function tests, a walk test, blood tests, and heart checks using imaging and questionnaires. No new drugs will be tested in this study.

• Study requires 2 short visits for tests and questionnaires.
• No treatment is involved; we only collect data.
• Participants should not have certain heart or lung conditions, or be on specific medications.

To join, you must have ILD and at least two signs of PH. You cannot join if you've had certain heart or lung issues recently, or if you're taking specific PH medications. If you have questions, please ask your doctor.