Extranodal subgroup and gene variant analyses. (A) Gene-level analysis for A20 in patients with extranodal MZL. (B) Analysis of the MYD88 L265P variant for all MZL subtypes combined. (C) Gene-level analysis for KMT2D in patients with extranodal MZL. (D) Gene-level analysis for CARD11 in patients with extranodal MZL.