Fig. 3: Kaplan-Meier survival by cycle 1–2 any grade or grade 3–4 neutropenia (breast patients).
From: Early treatment-related neutropenia predicts response to palbociclib

a Any grade neutropenia. Grade 0: (reference); median PFS 5.0 weeks. Grade 1–4: HR 0.29 (95% CI 0.11–0.74), p = 0.010; median PFS 17.3 weeks. b Grade 3–4 neutropenia. Grade 0–2: (reference); median PFS 12.7 weeks. Grade 3–4: HR 0.87 (95% CI 0.51–1.47), p = 0.596; median PFS 20.7 weeks.