Elevated day +100 post-AHSCT absolute CD4⁺CM cell count is significantly associated with improved OS but not PFS. (A-B) For all patients at day +100 post-AHSCT, those with absolute CD4⁺ CM T-cell counts in the top 3 quartiles combined had improved OS (P = .0003) but not PFS (P = .2) compared with those in the lowest quartile.