Data collection and follow‐up
BLOOD
Blood routine and biochemical examinations, routine urinalysis, 15‐lead electrocardiography, and ECOG performance status score assessments were carried out 1 day before chemotherapy initiation. Subsequently, a routine blood examination was performed every other day following PEG‐rhG‐CSF treatment in each cycle until ANC was >0.5 × 10The times from start to end for AEs as well as their severity, were also recorded. All participants underwent a safety assessment at the end of treatment.