DSMB recommends continuation of effiKIR trial with two arms

• Treatment stopped in one arm of the study with remaining two arms continuing as per protocol

Innate Pharma SA (the “Company” - Euronext Paris: FR0010331421 – IPH), the innate immunity company developing first-in-class therapeutic antibodies for cancer and inflammatory diseases, today announces that the Data and Safety Monitoring Board (“DSMB”) completed its fourth assessment of the EffiKIR study and recommended to stop treatment in one arm and continue the trial with the remaining two arms as per protocol.

In issuing this recommendation, the DSMB considers that treatment in the stopped arm cannot be superior to placebo. There is no concern with safety. Patients in the stopped arm will be followed up as planned. The trial remains blinded. The Company now expects that analysis on the primary efficacy endpoint, leukemia-free survival, will occur in Q2 2016.

As specified in the study protocol, the DMSB meets every six months to examine the safety data accumulated during progress of the trial.