Yannis Morel
Analyst · H.C. Wainwright. Your line is open
Thank you, Jonathan. I will now highlight the two exciting next-generation antibody therapeutic class on which we are focusing, the NK cell engagers, ANKETs, and antibody drug conjugate. On Slide 10, I draw your attention to our portfolio of ANKET. ANKET is our proprietary 13-class NK cell engager platform. It is a multi-specific plug and play technology aiming at engaging NK cells towards tumor cells by triggering the most stable activating receptor effect on NK cells called NKp46. The interesting feature of this platform is that by swapping the tumor binding portion, it can produce multiple drug candidates addressing a variety of targets in oncology, but it can also potentially harness NK cells to eliminate pathogenic cells in other diseases like in autoimmune disease. In 2024, Sanofi progressed the most advanced ANKET, SAR’579, to Phase 2 on the back of initial efficacy data showing single agent activity with durable complete responses in relapsed/refractory AML patients and started also a new Phase 1/2 trial in frontline AML in combination with venetoclax and azacytidin. For the BCMA targeting ANKET IPH6401, the Phase 1/2 study led by Sanofi for the treatment of patients with relapsed or refractory multiple myeloma will be stopped early and the product will now be pursued in autoimmune indication. As will be covered by Sonia, our lead proprietary ANKET, IPH65, is now in the clinic. It’s a second-generation molecule, which incorporates a variant of IL2 to induce the expansion of patients’ own NK cells and for which we presented new supporting preclinical data at the SITC conference at the end of last year. On Slide 11, I’d like to highlight the structure of IPH6501, which is our lead proprietary ANKET. It’s a novel CD20 targeted tetra-specific NK cell engager that’s specifically designed to target B cells. The unique design of IPH6501 involves several key components, each of which enhance its therapeutic potential. First, we have [indiscernible] targeting the tumor associated antigen, here CD20, in a monovalent way. Second, like in a regular antibody, we have an Fc portion that activates the NK cell receptor of CD16. Then the third and key component of the molecule is the NKp46 binder. It targets this NKp46 activating receptor, which is the most specific marker of human NK cells and which expression is stable on tumor infiltrating NK cells. Finally, the IL2 variant portion provides the proliferation signal that is directed towards NK cells, helping to boost their activity and enhancing the immunoresponse against cancer cells. IPL6501 represents a significant innovation in our NK cell engager platform, and we are excited about the potential it holds for patients with B cell malignancies. As we continue to advance these assets, we believe it could pave the way for a new class of immunotherapies targeting solid and hematologic tumors and potentially autoimmune disease. On Slide 12, I will now highlight IPH4502, our lead proprietary ADC. We are very excited by this novel and differentiated Nectin-1 topo-1 exatecan ADC that is currently in Phase 1 of development. This asset is built with a proprietary humanized anti-Nectin-4 antibody, which bind with high affinity to Nectin-4. With an active Fc, it’s inducing as well ADCC and CDC, enhancing its immune response potential. The linker used is hydrophilic, stable and cleavable, ensuring high ADC exposure and low release of free exatecan, which minimize potential side effects. The payload, exatecan, is a potent topoisomerase 1 inhibitor and that demonstrates bystander activity as well as strong activity in MMA resistance model, allowing it to target tumors that may be resistant to previous ADC therapies. Slide 13. As presented at ACR and SITC last year, IPH4502 has demonstrated superior efficacy to enfortumab vedotin in bladder cancer preclinical model, especially in tumors with low Nectin-4 expression or in model resistance to EV. Its unique design translates into high internalization and strong bystander effect, making it effective even in Nectin-4 low tumors. This could position IPH4502 as a potentially valuable therapy for a broad range of solid tumors, including breast cancer or lung cancer, but also with strong combination potential with PD-1 targeting agents. As we continue advancing IPH4502 through clinical development, we are excited by its broad therapeutic potential and look forward to the data we’ll generate in the coming months. I would like now to hand over to Sonia, who will cover the progress of our clinical programs.