Pulmonary Fibrosis, Interstitial Lung Disease

This study will investigate whether the senicapoc drug can prevent the scarring from worsening in interstitial lung disease. Researchers will compare Senicapoc to a placebo (a look-alike substance that contains no drug) to see if Senicapoc works to prevent lung function worsening. Participants will be asked to take 3 tablets a day for 26 weeks. Within this period, doctors will follow the participants, ask for experience of adverse events, check lung function and organ status, and participants will need to fill out quality-of-life questionnaires. A total of 5 visits are required, at initiation, after4, 13, 26 and 52 weeks. The final visit will occur 52 weeks after initiation and consist of a normal visit in the outpatient clinic where the doctor asks for relevant information regarding the period after end of administration of the study drug.