PD‐1 BLOCKADE IN A FRENCH SERIES OF 13 RELAPSED / REFRACTORY NK/T‐CELL LYMPHOMA PATIENTS. (12th June 2019) - Couronné, L.; Chaubard, S.; Bruneau, J.; Laurent, C.; Rossignol, J.; Suarez, F.; Moignet Autrel, A.; Clavert, A.; Duléry, R.; Alexis, M.; Lemonnier, F.; Noël, R.; et al.