A Phase 1, First-in-human, Multicentre, Open-label, Dose Escalation Study of [225Ac]-FPI-2068 in Adult Patients With Advanced Solid Tumours

Summary

This is a first-in-human, Phase 1, non-randomized, multicenter, open-label clinical study designed to investigate the safety, tolerability, dosimetry, biodistribution, and pharmacokinetics (PK) of \[225Ac\]-FPI-2068, \[111In\]-FPI-2107, and FPI-2053 in metastatic and/or recurrent solid tumors (HNSCC, NSCLC, mCRC, PDAC, GC, RCC).

Detailed description

The study will be conducted in 2 parts: Part A: optimization of the FPI-2053 dose (treatment with dose level 1 of \[225Ac\]-FPI-2068 - fixed dose). Part B: dose escalation of \[225Ac\]-FPI-2068 with optimal FPI-2053. Part B will commence once the optimal dose of FPI-2053 is determined in Part A. The RP2D will be determined from Part B based on all available safety, efficacy, PK, and dosimetry information.

Arms & interventions

• DrugFPI-2053

  FPI-2053 is a bispecific antibody that targets EGFR and cMET

• Drug[111In]-FPI-2107

  \[111In\]-FPI-2107 is an imaging agent in which indium-111 is conjugated to FPI-2053. Participants will have a fixed dose of \[111In\]-FPI-2107 followed by imaging scans (with or without pre-administration of FPI-2053).

• Drug[225Ac]-FPI-2068

  \[225Ac\]-FPI-2068 is a radiopharmaceutical therapy in which an alpha emitter, actinium-225, is conjugated to FPI-2053. Participants will be dosed through IV administration every 56 days for up to 3 cycles of the Treatment Period.

Outcome measures

Eligibility criteria