Duffy-null phenotype associated with delayed ANC recovery independent of other risk factors or CAR-HEMATOTOX score. (A) Multivariable forest plot with hazard ratios and 95% confidence intervals shown for each potential risk factor for delayed ANC recovery. P values calculated by Cox proportional hazards model, with Duffy-null phenotype, high CAR-HEMATOTOX score, and 4+ prior lines of therapy meeting statistical significance as independent risk factors for delayed recovery. (B) Time to ANC recovery by Kaplan-Meier analysis stratified by both Duffy antigen status and CAR-HEMATOTOX score, with P value calculated by log-rank (Mantel-Cox) test.