In our study, we have exmained 11 tgSNPs covering the common variation (MAF>5%) in CHI3LI including the SNPs rs10399931 and rs4950928 which previously have been found to contribute to interindividual variations in circulating YKL-40 levels in patients with sarcoidosis [9] and asthma [11], respectively. Here, CHI3L1 is linked to asthma.