A Study of Bispecific Antibody MCLA-145 in Patients With Advanced or Metastatic Malignancies

Merus

Status and phase: Enrolling; Phase 1

Conditions: Advanced Cancer; Solid Tumor, Adult; B-cell Lymphoma, Adult

Treatments: Drug: MCLA-145

Study type: Interventional

Funder types: Industry

Identifiers

NCT03922204

MCLA-145-CL01/MCLA-145-101

2018-004396-13 (EudraCT Number)

Details and patient eligibility

About

This is a Phase 1, open label, non-randomised, dose-escalation single agent study with expansion cohorts for dose confirmation/safety and preliminary efficacy of MCLA-145 in advanced or metastatic malignancies

Full description

Study Design: This open label, multicenter, first in human study consists of 2 parts. Part 1 is a dose escalation to find the recommended dose for the expansion.

Part 2 is a dose expansion to confirm the dose of MCLA-145 through further evaluation of safety, tolerability, Pk, preliminary antitumor activity, and functional target engagement.

The study includes three periods: Screening( up to 28 days prior to the first dose of study drug); Treatment( first dose of study drug with treatment cycles of 28 days); and Follow-up ( 30 days and 90 days after the last dose) including survival follow-up checks every 2 months up to 12 months after the last dose.

Enrollment: 118 estimated patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Histologically or cytologically confirmed advanced or recurrent/metastatic solid tumors or B-cell lymphomas, that are considered non-amenable to surgery or other curative treatments or procedures (if applicable)
• Measureable disease per RECIST v1.1 or Lugano Criteria
• Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
• Received prior standard therapy for advanced or recurrent/metastatic disease as applicable to tumor type
• Received a maximum of 4 prior systemic treatment regimens (inclusive of chemotherapy, immunotherapy, and targeted therapy regimens) for advanced or recurrent/metastatic disease
• Life expectancy of ≥12 weeks, as per investigator judgement

Exclusion criteria

• The following B-cell neoplasms: Burkitt lymphoma, lymphoblastic leukemia/lymphoma, lymphoplasmacytic lymphoma, chronic lymphocytic leukemia
• Prior therapy containing an anti-PD-L1 agent or T-cell agonist
• Current serious illness or medical condition including, but not limited to uncontrolled active infection
• Has not recovered to ≤ Grade 1 or baseline from toxic effects of prior therapy (including prior immunotherapy) and/or complications from prior surgical intervention before starting MCLA-145
• Prior ≥ Grade 3 immune-mediated AEs with anti-PD-1 therapy
• History of any grade immune-mediated ocular AEs.
• Known hypersensitivity or severe reaction to any component of MCLA-145 or formulation components
• Participants who have active or inactive autoimmune disease or syndrome (eg, rheumatoid arthritis, moderate or severe psoriasis, multiple sclerosis, inflammatory bowel disease) that has required systemic treatment in the past 2 years or who are receiving systemic therapy for an autoimmune or inflammatory disease (ie, with use of disease modifying agents, corticosteroids, or immunosuppressive drugs)

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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118 participants in 1 patient group

MCLA-145

Experimental group

Description:

In Part 1, the dose escalation phase, patients with advanced or recurrent/metastatic solid tumors or B-cell lymphomas will receive escalating doses of MCLA-145 ( every 2 weeks ) until MTD or RDE is reached. In Part 2, the expansion phase, participants with advanced or metastatic solid tumors will receive intravenous infusion of MCLA-145 at the recommended phase II dose every 2 weeks. The duration of each treatment cycle is 28 days

Treatment:

Drug: MCLA-145