The present invention pertains to a new method for the diagnosis, prognosis, stratification and / or monitoring of a therapy, of a pulmonary dysfunction in a subject. The method is based on the determination of the level of a panel of biomarkers selected from TM4SF18, TRGV9, ADORA2A, H963, IRF2, TNFSF14, TRIB1,
SMAD3, TSLP, SLAMF8, THBS1, SOD1, HAS2, TLR2, THBD, TRA, TFEC, SPHK1, COL3A1,
Elastin, IL6R, SN, TEK, SOX7, CXCL9, CXCL10, SLC38A6, SLC15A3, TGFA, SLPI, VWF, TLR8, TGFB1, CXCR6, CCL24, PD1, PLA1A, TRD, CTLA4, MMP9, CD301, PDL1, PDL2, TGFB1, CXCR6, CCL24, PD1, PLA1A, TRD, CTLA4, MMP9, and CD301. The new biomarker panels of this invention allow diagnosing and even stratifying various pulmonary dysfunctions in a subject, and even allow
early detection of Chronic
lung allograft dysfunction (CLAD). Furthermore provided are diagnostic kits for performing the methods of the invention.