Patient flow diagram for ECHELON-2 exploratory analysis: A+CHP arm. There were no significant differences (P = .49) in the baseline international prognostic index score distribution between patients who received SCT and patients who did not receive SCT. Note that 12 transplanted patients were excluded from the analysis (4 patients with ALK⁺; 8 did not have CR at EOT [6 PR, 1 SD, and 1 not evaluable]), for a total analysis population of n = 38. Consistent criteria¹⁶ were applied per protocol for response assessments. PR, partial response.