Mogamulizumab prolongs PFS in CTCL

The lymph node ORR was 17% (21/124) and 4% (5/122), respectively. The viscera ORR was 0% in both arms.

Crossover

Among patients who crossed over from vorinostat to mogamulizumab, the ORR was 31% (41/133). In these patients, the median PFS was 8.9 months.

In the 319 patients who were assigned to mogamulizumab or crossed over to that arm, the median PFS was 8.4 months.

Safety

The most common treatment-emergent, grade 1-2 AEs, occurring in at least 20% of patients in either arm (mogamulizumab and vorinostat, respectively), were:

• Thrombocytopenia (14% vs 34%)
• Diarrhea (23% vs 57%)
• Nausea (15% vs 41%)
• Fatigue (22% vs 32%)
• Increased blood creatinine (3% vs 28%)
• Decreased appetite (7% vs 24%)
• Dysgeusia (3% vs 28%)
• Drug eruptions (20% vs 1%)
• Infusion-related reactions (32% vs 1%).

Grade 3 AEs in the mogamulizumab arm included drug eruptions (n=8), hypertension (n=8), pneumonia (n=6), fatigue (n=3), cellulitis (n=3), infusion-related reactions (n=3), sepsis (n=2), decreased appetite (n=2), AST increase (n=2), weight decrease (n=1), pyrexia (n=1), constipation (n=1), nausea (n=1), and diarrhea (n=1).

Grade 4 AEs with mogamulizumab were cellulitis (n=1) and pneumonia (n=1). Grade 5 AEs included pneumonia (n=1) and sepsis (n=1).