I cannot create a summary of the requested article because the content of the article titled "STAT+: What to expect from Gossamer Bio's late-stage lung disease study" is not found in the search results provided. The search results only contain links to articles on pulmonary arterial hypertension (PAH) and a brief mention of the collaboration between Chiesi and Gossamer Bio on the development of the drug seralutinib, but not the full text of the article you requested to be summarized. I would need the full content of the original article to create an accurate and factual summary as per your requirements.