POSTERSor African-Americans.Maximum decreases in hemoglobin (Hb), neutrophils, platelets, and weight were assessed by virologic response status (SVR, relapse, breakthrough, and nonresponder) and by race/ethnicity.Results: Of 1778 HCV genotype 1, 4, 5, or 6 patients analyzed, the majority were male, non-Hispanic Caucasians, with baseline HCV RNA >800,000, and ALT ≤3×ULN.Mean baseline BMI was 27.5 kg/m 2 .Adjusted* Mean Maximum Decreases from Baseline Viral Response and Race/Ethnic Groups Neutrophils in 10 9 /L, Mean (SE) Platelets in 10 9 /L, Mean (SE) Hb in g/dL, Mean (SE)