Smoking, blood cells and myeloproliferative neoplasms: meta‐analysis and Mendelian randomization of 2·3 million people

Meta‐analyses and Mendelian randomization (MR) may clarify the associations of smoking, blood cells and myeloproliferative neoplasms (MPN). We investigated the association of smoking with blood cells in the Danish General Suburban Population Study (GESUS, n = 11 083), by meta‐analyses (including GESUS) of 92 studies ( n = 531 741) and MR of smoking variant CHRNA3 (rs1051730[A]) in UK Biobank, and with MPN in a meta‐analysis of six studies ( n...