Age and survival analyses. (A) Logistic regression analysis of age distribution. The diagram shows the decreasing probability of having IG/IRF4 translocations in association with increasing age (n = 385; P < .001). Gray dots represent IG/IRF4-positive cases; and black dots, IRF4-break-negative cases. (B) Kaplan-Meier curves show a better survival of IG/IRF4-positive cases (P = .027). (C) Kaplan-Meier curves stratifying IRF4-break-negative cases by age (≤ 60 years and > 60 years).