In this single-center cohort study, 2,876 visits of 321 patients treated with peginterferon alfa and ribavirin were evaluated
for neutropenia, infections, dose reductions, and potential risk factors
for infection during HCV treatment. The baseline mean absolute neutrophil count (ANC) was 3,420 cells/μL, and 16 patients had a baseline ANC of <1,500 cells/μL. During treatment, neutropenia, which was defined as ANC <750 cells/μL, was observed in 95 patients (29.