A Study to Evaluate Safety, Tolerability and Preliminary Efficacy of FP-1305 in Cancer Patients (MATINS)

A Phase I/II Open-Label, Three-Part, Dose-Finding and Separate Cohort Expansion Trial to Assess the Safety, Tolerability and Preliminary Efficacy of Repeated Doses of CLEVER-1 Antibody FP-1305, in Subjects With Advanced Solid Tumours

This is a first in human study to identify whether FP-1305 is suitable to use in humans. The previous pre-clinical studies have demonstrated that FP-1305 binds to a receptor known as CLEVER-1. CLEVER-1 has been shown to support tumour growth. No significant adverse events were witnessed in primates and the dose used will be 300 fold lower than the dose provided to primates which showed no toxicity.

The patients with advanced melanoma, uveal melanoma, cholangiocarcinoma, gallbladder cancer, ER+ breast, gastric, ovarian, pancreatic, colorectal, liver or anaplastic thyroid cancer who have exhausted all licenced therapeutic options will die due to their disease. Based on the investigator's existing data CLEVER-1 is expressed in these tumour types. Inhibition of CLEVER-1 with FP-1305 may have an anti-tumour effect in these patients.

Study Overview

• Status: Completed
• Conditions: Cancer
• Intervention / Treatment: Biological: FP-1305 (bexmarilimab)

• Study Type: Interventional
• Enrollment (Actual): 216
• Phase: Phase 2; Phase 1

Contacts and Locations

Study Locations

• Finland
  • Helsinki, Finland, 00290
    • Clinical Research Institute HUCH Ltd
  • Oulu, Finland, 90220
    • Oulu University Hospital
  • Tampere, Finland, 33520
    • Tampere University Hospital
  • Turku, Finland, 20520
    • Turku University Hospital
• France
  • Villejuif, France, 94805
    • The Institut Gustave Roussy
• Netherlands
  • Rotterdam, Netherlands, 3015 GD
    • Erasmus University Medical Center Rotterdam
• Spain
  • Madrid, Spain, 28050
    • START Madrid - CIOCC Hospital HM Sanchinarro
• United Kingdom
  • Birmingham, United Kingdom, B15 2GW
    • Queen Elizabeth Hospital Birmingham
  • Manchester, United Kingdom, M20 4BX
    • The Christie NHS Foundation Trust
  • Surrey
    • Sutton, Surrey, United Kingdom, SM2 5PT
      • The Royal Marsden NHS Foundation Trust
• United States
  • Texas
    • San Antonio, Texas, United States, 78229-3901
      • The University of Texas Health Science Center at San Antonio

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 14 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Subjects must meet all of the following inclusion criteria to be eligible for participation in the clinical trial:

1. Written Informed Consent
2. Aged ≥ 18 years male or female
3. Tumour sample should be collected during screening period. If a recent tumour biopsy obtained within six months before the date of consent is available (or older, as agreed on a case by case basis with the sponsor), that may be used. At the discretion of the sponsor, the tumour sample may be optional for certain subjects in Part III
4. Life expectancy > 12 weeks

5. Histologically confirmed advanced (inoperable or metastatic) malignancies without standard therapeutic options available:

   • Hepatocellular carcinoma
   • Gallbladder cancer or intra- or extrahepatic cholangiocarcinoma
   • Colorectal adenocarcinoma
   • Serous poorly differentiated (Grade 3) ovarian adenocarcinoma or undifferentiated ovarian cancer
   • Pancreatic ductal adenocarcinoma
   • Immunotherapy (IO) refractory cutaneous melanoma (progression either on or after programmed cell death protein-1 (PD-1)/programmed cell death ligand-1 (PD-L1) or cytotoxic T-lymphocyte antigen-4 (CTLA-4) antibody therapy)
   • Uveal melanoma in Parts II and III
   • Gastric adenocarcinoma (including adenocarcinoma of the distal esophagus / GE junction) in Parts II and III
   • ER+ breast cancer in Parts II and III
   • Anaplastic thyroid cancer in Parts II and III
6. ECOG performance status 0 or 1
7. Measurable disease in Parts II and III
8. Adequate bone marrow, liver and kidney function defined as Blood white blood cell ≥ lower limit of normal Blood neutrophil count ≥ 1x10(9)/L Blood platelet count ≥ 100x10(9)/L, for HCC ≥ 50x10(9)/L Blood haemoglobin ≥ 9.0 g/dL Creatinine clearance > 40 mL/min calculated by Cockcroft-Gault formula AST ≤ 3 X ULN (≤ 5 x ULN when HCC or hepatic metastases are present) ALT ≤ 3 X ULN (≤ 5 x ULN when HCC or hepatic metastases present) Bilirubin ≤ 1.5 X ULN Albumin ≥ 3.0 g/dL The most recent measurements taken during the screening period must be within the required limits for the patient to be considered eligible (i.e. criteria met once during the screening period are not sufficient if there are more recent measurements available that are not within the required limits. It is however acceptable to repeat measurements if the initial measurements or subsequent measurements taken during the screening period are not within the required limits; the patient is eligible providing that the newest measurements are within the required limits). However, once a subject is out of the screening period, and has had eligibility confirmed and been enrolled, the pre-dose laboratory assessments are not subjected to inclusion criteria limits, but only for investigators assessment of subject safety.
9. Women of child-bearing potential must have a negative pregnancy test in serum prior to trial entry
10. Women of child-bearing potential and men who have partners of child-bearing potential must be willing to practise highly effective contraception for the duration of the trial and for three months after the completion of treatment

Exclusion Criteria;

1. Less than 21 days since the last dose of intravenous anticancer chemotherapy or less than five half-lives from a small molecule targeted therapy or oral anticancer chemotherapy before the first IMP administration
2. Any immunotherapy within preceding 6 weeks from the first IMP administration
3. Investigational therapy or major surgery within 4 weeks from the date of consent
4. Active clinically serious infection > Grade 2 NCI-CTCAE version 5.0 (Appendix 5 - Common Toxicity Criteria Gradings) within preceding 2 weeks from the date of consent
5. Brain metastases
6. Subject has not recovered from the previous therapies to Grade ≤ 1 severity as classified by the NCI-CTCAE version 5.0 (except Grade ≤ 2 alopecia, neuropathy or thyroid disorders)
7. Pregnant or lactating women
8. History of second malignancy except for non-melanotic skin cancer, cervical carcinoma in situ or superficial bladder cancer, or any other malignancy treated previously with curative intent and more than three years without relapse
9. Evidence of severe or uncontrolled systemic diseases, congestive cardiac failure New York Heart Association (NYHA) class 2 (Appendix 7 - NYHA classification), Myocardial Infarction (MI) within 6 months or laboratory finding that in the view of the investigator makes it undesirable for the subject to participate in the trial
10. Any medical condition that the Investigator considers significant to compromise the safety of the subject or that impairs the interpretation of IMP toxicity assessment
11. Confirmed human immunodeficiency virus infection
12. Symptomatic cytomegalovirus infection
13. Subjects with active auto-immune disorder (except type I diabetes, celiac disease, hypothyroidism requiring only hormone replacement, vitiligo, psoriasis, or alopecia)
14. The subject requires systemic corticosteroid or other immunosuppressive treatment
15. Subjects with organ transplants
16. Subjects in dialysis
17. Use of Live (attenuated) vaccines for 30 days prior to the start of study treatment, during treatment, and until last visit
18. Subject is unwilling or unable to comply with treatment and trial instructions
19. Subjects with known hypersensitivity to the IMP or any of the pharmaceutical ingredients

Specific Additional Exclusion Criteria for Hepatobiliary Cancers

1. Any ablative therapy (Radio Frequency Ablation or Percutaneous Ethanol Injection) for HCC (this should not exclude subjects if target lesion(s) have not been treated and occurred > 6 weeks prior trial entry)
2. Hepatic encephalopathy
3. Ascites refractory to diuretic therapy
4. Child-Pugh score ≥ 7

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Non-Randomized
• Interventional Model: Sequential Assignment
• Masking: None (Open Label)

Number of Arms

6

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: FP-1305 (bexmarilimab) 0.3 mg/kg; Part I, Dose-escalation FP-1305 0.3 mg/kg is administered in Q3W intervals	Biological: FP-1305 (bexmarilimab); The study will test for the first time in patients with cancer, an experimental medicine, called FP-1305. The study goal is to find the dose of FP-1305 that works best against cancer while it remains safe for use, tolerable and effective in patients with cancer.; Other Names: bexmarilimab
Experimental: FP-1305 (bexmarilimab) 1 mg/kg; Part I and II, Dose-escalation FP-1305 1 mg/kg is administered in Q3W, Q2W or Q1W intervals	Biological: FP-1305 (bexmarilimab); The study will test for the first time in patients with cancer, an experimental medicine, called FP-1305. The study goal is to find the dose of FP-1305 that works best against cancer while it remains safe for use, tolerable and effective in patients with cancer.; Other Names: bexmarilimab
Experimental: FP-1305 (bexmarilimab) 3 mg/kg; Part I and II, Dose-escalation FP-1305 3 mg/kg is administered in Q3W, Q2W or Q1W intervals	Biological: FP-1305 (bexmarilimab); The study will test for the first time in patients with cancer, an experimental medicine, called FP-1305. The study goal is to find the dose of FP-1305 that works best against cancer while it remains safe for use, tolerable and effective in patients with cancer.; Other Names: bexmarilimab
Experimental: FP-1305 (bexmarilimab) 10 mg/kg; Part I and II, Dose-escalation FP-1305 10 mg/kg is administered in Q3W, Q2W or Q1W intervals	Biological: FP-1305 (bexmarilimab); The study will test for the first time in patients with cancer, an experimental medicine, called FP-1305. The study goal is to find the dose of FP-1305 that works best against cancer while it remains safe for use, tolerable and effective in patients with cancer.; Other Names: bexmarilimab
Experimental: FP-1305 (bexmarilimab) 0.1 mg/kg; Part I Dose-escalation FP-1305 0.1 mg/kg is administered in three-week intervals	Biological: FP-1305 (bexmarilimab); The study will test for the first time in patients with cancer, an experimental medicine, called FP-1305. The study goal is to find the dose of FP-1305 that works best against cancer while it remains safe for use, tolerable and effective in patients with cancer.; Other Names: bexmarilimab
Experimental: FP-1305 (bexmarilimab) 30 mg/kg; Part II Dose-escalation FP-1305 30 mg/kg is administered in Q3W, Q2W or Q1W intervals	Biological: FP-1305 (bexmarilimab); The study will test for the first time in patients with cancer, an experimental medicine, called FP-1305. The study goal is to find the dose of FP-1305 that works best against cancer while it remains safe for use, tolerable and effective in patients with cancer.; Other Names: bexmarilimab

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Dose Limiting Toxicities (DLT) in the Trial Subjects.	Tolerable dose(s) will be determined by the TITE-CRM based on the occurrence/non-occurrence of dose limiting toxicities in the trial subjects.	Up to one year
Number of Participants With Treatment Emergent Adverse Events (Safety and Tolerability)	Number of adverse events and serious adverse events. Adverse events are collected, graded and reported according to the National Cancer Institute-Common Terminology Criteria for Adverse Events (NCI-CTCAE) version 5.0.	approximately 4 years and 9 months
The Response Objective Response Rate (ORR) to the Treatment Was Planned to be Determined by Tumor Imaging According to RECIST 1.1.	The objective response rate (ORR) to the treatment will be determined by tumour imaging (tumor size) according to RECIST v.1.1. Results from each tumour type, dose level and dosing frequency are reported separately.	approximately 4 years and 9 months
The Disease Control Rate (DCR) Response to the Treatment Was Planned to be Determined by Tumor Imaging According to RECIST 1.1.	The disease control rate (DCR) response to the treatment will be determined by tumour imaging (tumor size) according to RECIST v.1.1 are presented by cycles and by doing so there is no difference in the definition of DCR and Clinical Benefit Rate (CBR)	approximately 4 years and 9 months

Collaborators and Investigators

• Sponsor: Faron Pharmaceuticals Ltd
• Investigators: Principal Investigator: Petri Bono, MD, PhD, Terveystalo Ltd

Publications and helpful links

General Publications

• Hollmen M, Maksimow M, Rannikko JH, Karvonen MK, Vainio M, Jalkanen S, Jalkanen M, Mandelin J. Nonclinical Characterization of Bexmarilimab, a Clever-1-Targeting Antibody for Supporting Immune Defense Against Cancers. Mol Cancer Ther. 2022 Jul 5;21(7):1207-1218. doi: 10.1158/1535-7163.MCT-21-0840.
• Virtakoivu R, Rannikko JH, Viitala M, Vaura F, Takeda A, Lonnberg T, Koivunen J, Jaakkola P, Pasanen A, Shetty S, de Jonge MJA, Robbrecht D, Ma YT, Skytta T, Minchom A, Jalkanen S, Karvonen MK, Mandelin J, Bono P, Hollmen M. Systemic Blockade of Clever-1 Elicits Lymphocyte Activation Alongside Checkpoint Molecule Downregulation in Patients with Solid Tumors: Results from a Phase I/II Clinical Trial. Clin Cancer Res. 2021 Aug 1;27(15):4205-4220. doi: 10.1158/1078-0432.CCR-20-4862. Epub 2021 Jun 2.

Study record dates

Study Major Dates

• Study Start (Actual): December 3, 2018
• Primary Completion (Actual): September 6, 2023
• Study Completion (Actual): October 31, 2023

Study Registration Dates

• First Submitted: October 23, 2018
• First Submitted That Met QC Criteria: November 5, 2018
• First Posted (Actual): November 7, 2018

Study Record Updates

• Last Update Posted (Actual): April 2, 2025
• Last Update Submitted That Met QC Criteria: March 17, 2025
• Last Verified: March 1, 2025

More Information

Terms related to this study

• Other Study ID Numbers: FP2CLI001; 2018-002732-24 (EudraCT Number)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No