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Innate Pharma SA (Euronext Paris: IPH; Nasdaq: IPHA) (“Innate” or the “Company”) today announced that the U.S. Food and Drug Administration (FDA) has placed a partial clinical hold on the lacutamab IND leading to a pause in new patient enrollment to the Company’s ongoing lacutamab trials IPH4102-201 (Phase 2 TELLOMAK) and 102 (Phase 1b PTCL). The partial clinical hold follows one fatal case of hemophagocytic lymphohistiocytosis (HLH), a rare hematologic disorder. Patients already on study treatment who are deriving clinical benefit may continue treatment after being reconsented.
TELLOMAK, Innate Pharma’s ongoing Phase 2 trial of lacutamab in cutaneous T-cell lymphoma (CTCL), completed enrollment in Q2 2023 (n=170 patients). Enrollment is also completed to the initial cohort (n=20 patients) of the Phase 1b PTCL trial and is awaiting a futility interim analysis to progress to the next stage. Innate Pharma is on track for final data from the Phase 2 TELLOMAK trial and preliminary data on PTCL in Q4 2023.
“Patient safety is of paramount importance to us, and we are currently undertaking efforts to address the FDA requests, which include incorporation of risk mitigation and management strategies for hemophagocytic lymphohistiocytosis in ongoing lacutamab studies.” said Mondher Mahjoubi, Chief Executive Officer of Innate Pharma. “Additionally, with all patients recruited into the Phase 2 TELLOMAK study, we do not currently anticipate any delay for the TELLOMAK Phase 2 final data due shortly.”
About Lacutamab
Lacutamab is a first-in-class anti-KIR3DL2 humanized cytotoxicity-inducing antibody that is currently in clinical trials for treatment of cutaneous T-cell lymphoma (CTCL), an orphan disease, and peripheral T cell lymphoma (PTCL). Rare cutaneous lymphomas of T lymphocytes have a poor prognosis with few efficacious and safe therapeutic options at advanced stages.
KIR3DL2 is an inhibitory receptor of the KIR family, expressed by approximately 65% of patients across all CTCL subtypes and expressed by up 90% of patients with certain aggressive CTCL subtypes, in particular, Sézary syndrome. It is expressed by up to 50% of patients with mycosis fungoides and peripheral T-cell lymphoma (PTCL). It has a restricted expression on normal tissues.
Lacutamab is granted European Medicines Agency (EMA) PRIME designation and US Food and Drug Administration (FDA) granted Fast Track designation for the treatment of patients with relapsed or refractory Sézary syndrome who have received at least two prior systemic therapies.Lacutamab is granted orphan drug status in the European Union and in the United States for the treatment of CTCL.
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