a positive trendP = .09
Exploratory subgroup analyses of PFS suggested a positive trend in 2-year PFS favoring R2-CHOP ( v placebo/R-CHOP) in patients with IPI ≥ 3 (59% v 50%, P = .09; Fig 3 ), nonbulky disease (73% v 66%, P = .05), and lower baseline creatinine clearance 30 to < 60 mL/min (69% v 45%, P = .03; Fig 4 ).