First patient dosed in IPH6101/SAR443579 Phase 1/2 clinical trial in various blood cancers

• Partner Sanofi advances IPH6101/ SAR443579, a novel NKp46/CD16-based, CD123 targeted NK cell engager, to first-in-human clinical trial in relapsed/refractory AML, B-ALL or HR-MDS

• First molecule from Innate’s multi-specific NK cell engager platform, ANKETTM, to progress to the clinic 

Innate Pharma SA (Euronext Paris: IPH; Nasdaq: IPHA) (“Innate” or the “Company”) today announced that the first patient was dosed in a Phase 1/2 clinical trial (NCT05086315), evaluating IPH6101/SAR443579, the first NKp46/CD16-based NK cell engager, in patients with relapsed or refractory acute myeloid leukemia (R/R AML), B-cell acute lymphoblastic leukemia (B-ALL) or high risk-myelodysplastic syndrome (HR-MDS). 

The purpose of the dose escalation and dose expansion study, which is sponsored by Sanofi, is to evaluate the safety, pharmacokinetics, pharmacodynamics and initial clinical activity of IPH6101/SAR443579, Innate’s lead ANKETTM asset, in various CD123-expressing hematological malignancies. 

This trial is supported by positive pre-clinical results presented at the Society for Immunotherapy of Cancer (SITC) 2021 Congress, which demonstrated the CD123-targeted molecule’s potent antitumor activity against AML, including evidence supporting greater anti-leukemia activity compared with an anti-CD123 antibody. IPH6101/SAR443579 had sustained pharmacodynamic effects in non-human primates, combining efficient depletion of CD123-expressing cells with minor systemic cytokine release in comparison to T-cell engagers. As expected, it also had a favorable safety profile. 

“We’re pleased with the initiation of the clinical trial for IPH6101/SAR443579, which is the first ANKETTM asset to enter the clinic. ANKETTM is our new multi-specific NK cell engager platform, which has the potential to engage NK cells through NKp46 and CD16, and more broadly, generate an entirely new class of molecules to induce synthetic immunity against cancer,” said Joyson Karakunnel, MD, MSc, FACP, Chief Medical Officer of Innate Pharma. “We look forward to continuing to advance this platform given the critical role NK cells play in the cancer immunity cycle.”

The start of the trial has triggered a milestone payment from Sanofi to Innate, which is part of a previously announced research collaboration with Sanofi. Under the agreement, the companies collaborate on the generation and evaluation of up to two bispecific ANKETs, using technology from Innate and Sanofi’s proprietary bispecific antibody formats as well as tumor targets. The companies are currently working on the second research program under the agreement.

More information about the Phase 1/2 trial can be found here.