Evaluation of the m7-FLIPI. Kaplan-Meier curves displaying (A) PFS in patients with FL by m7-FLIPI stratification, (B) OS in patients with FL by m7-FLIPI stratification, (C) PFS in patients with FL by m7-FLIPI stratification vs chemotherapy-treatment status, and (D) OS in patients with FL by m7-FLIPI stratification vs chemotherapy-treatment status.