PDCD1LG2 and interstitial lung disease: To confirm if those who express the transmembrane form of PD‐L1 and PD‐L2 are altered in up‐sPD‐L2 post‐COVID‐ILD patients, 10 patients up‐ and 10 down‐sPD‐L2 levels from our post‐COVID‐ILD group were aleatory selected, and a phenotypical characterization by flow cytometry was performed.