Lacutamab: Phase III Clearance and Regulatory Designations
FDA cleared the TELLOMAK-3 Phase III protocol for lacutamab in CTCL with planned initiation in H2 2026; lacutamab holds Breakthrough Therapy, Fast Track, PRIME and Orphan Drug designations and the Phase II data support a potential accelerated approval path in Sezary syndrome.
IPH4502: Early Clinical Activity and Differentiated Profile
First-in-human Phase I study of IPH4502 showing preliminary antitumor activity (including urothelial cancer post-enfortumab vedotin) with a favorable safety profile; MTD established and cohorts enriched at pharmacologically active doses; preclinical data show activity in low/heterogeneous Nectin-4 models supporting a differentiated TOPO1 ADC profile.
Monalizumab: Large Phase III Completed Enrollment
PACIFIC-9 Phase III (monalizumab + durvalumab arms) has completed enrollment (~999 patients randomized 1:1:1); primary endpoint PFS readout expected in H2 2026, representing a major near-term clinical catalyst.
IPH5201 / MATISSE: Positive Scientific Visibility
IPH5201 (anti-CD39) MATISSE Phase II interim analysis selected for oral presentation at AACR, increasing scientific visibility; program explores a mechanistically distinct approach upstream of CD73 with potential synergy with chemotherapy and durvalumab.
Partnerships with Significant Upside and Near-Term Cash Received
AstraZeneca deals provide material upside: monalizumab program worth up to $1.275B (already received $450M) and IPH5201 worth up to $885M (already received $60M); potential double-digit royalties and options to co-fund/co-promote in Europe.
Commercial Opportunity / Market Benchmarks for Lacutamab
Estimated U.S. incident patient pool: ~300/year for Sezary syndrome (prevalence ~1,000) and ~3,000/year for Mycosis Fungoides (prevalence ~12,000); company projects an initial Sezary market opportunity up to ~$150M expanding to >$500M across Sezary and MF in 2nd-line with upside over time; mogamulizumab benchmarked at ~$300M sales in 2025 (projected $350M in 2026).
Operational Discipline Reducing R&D Spend
R&D expenses decreased by 16% year-over-year to EUR 43.6M (R&D represented 73% of operating expenses), driven by study maturity and lower indirect R&D costs.