The MR-Egger and WM methods both indicated a null causal effect of MPN risk on RANTES concentration (β MR-Egger = 0.051, 95% CI: [−0.085, 0.187],p = 0.49;Supplementary Table S11[online only]; β WM = 0.042, 95% CI: [−0.017, 0.102],p = 0.163;Supplementary Table S11[online only]). Here, CCL5 is linked to myeloproliferative neoplasm.