The most common adverse events were headache , fatigue , pyrexia , and influenza-like illness at 12 weeks ( 95 [ 37 % ) vs 45 [ 34 % ] , 89 [ 35 % ] vs 52 [ 39 % ] , 78 [ 30 % ] vs 48 [ 36 % ] , and 66 [ 26 % ] vs 34 [ 25 % ] , respectively ) and for the entire treatment ( 100 [ 39 % ] vs 49 [ 37 % ] , 94 [ 37 % ] vs 56 [ 42 % ] , 79 [ 31 % ] vs 53 [ 40 % ] , and 66 [ 26 % ] vs 35 [ 26 % ] , respectively ) .