A Study to Investigate BGB-3245 (Brimarafenib) With Panitumumab in Participants With Advanced or Metastatic RAS Mutant Colorectal and Pancreatic Ductal Cancers

A Phase 1b, Open-Label, Dose Escalation and Expansion Study to Investigate the Safety, Pharmacokinetics, and Antitumor Activity of BGB-3245 With Panitumumab in Patients With Advanced or Metastatic RAS Mutant Colorectal and Pancreatic Ductal Cancers

The primary objectives of Part 1 of this study are to:

• Assess the safety and tolerability of the combination of BGB-3245 and panitumumab in participants with advanced or metastatic colorectal cancer (CRC) with a known mutation status and tumor harboring an oncogenic mutation of v-Raf murine sarcoma viral oncogene homolog B; B-RAF proto-oncogene, serine/threonine kinase (BRAF), Kirsten rat sarcoma viral oncogene homolog (KRAS), or neuroblastoma RAS viral oncogene homolog (NRAS) with documented disease progression during or after at least 1 line of prior therapy.
• Determine the maximum tolerated dose (MTD) of BGB-3245 in combination with panitumumab and the recommended phase 2 dose (RP2D) of the combination.

The primary objective of Part 2 of this study is to determine the objective response rate (ORR) as assessed by initial investigator review using Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 with BGB-3245 and panitumumab combination treatment at the RP2D.

Study Overview

• Status: Recruiting
• Conditions: Colorectal Cancer; Pancreatic Ductal Cancer; Advanced or Metastatic RAS Mutant Colorectal and Pancreatic Ductal Cancers
• Intervention / Treatment: Drug: BGB-3245; Drug: Panitumumab

• Study Type: Interventional
• Enrollment (Estimated): 64
• Phase: Phase 1

Contacts and Locations

• Study Contact: Name: MapKure; Phone Number: 1-877-828-5568; Email: clinicaltrials@mapkure.com

Study Locations

• United States
  • California
    • Duarte, California, United States, 91010
      • Recruiting
      • City of Hope Comprehensive Cancer Center - Duarte
  • Virginia
    • Fairfax, Virginia, United States, 22031
      • Recruiting
      • USOR - Virginia Cancer Specialists - Fairfax Office

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Key Inclusion Criteria:

1. Participants with histologically confirmed advanced or metastatic solid tumors who have had documented disease progression by RECIST criteria during or after at least 1 prior line of systemic anticancer therapies in the representative population or are unable to receive standard of care therapy(ies) as noted by local guidelines.
2. Part 1 (Dose Finding): Participants with CRC with a known mutation status by local testing and tumor harboring an oncogenic mutation of BRAF, KRAS, or NRAS in the archival tumor sample or fresh tumor biopsy.
3. Part 2 (Dose Expansion): Participants must have a known mutation status by local testing and meet one of the following criteria according to the group they are enrolled into: Group 1: Participants with CRC that harbors KRAS or NRAS mutations in the archival tumor sample or fresh tumor biopsy. Group 2: Participants with PDAC that harbors KRAS mutations in the archival tumor sample or fresh tumor biopsy.
4. Participants must provide archival tumor tissue or a fresh tumor biopsy for retrospective mutation status analysis.
5. Participants must have radiologically measurable disease as defined per RECIST v1.1 at screening.
6. Eastern Cooperative Oncology Group performance status of ≤1 at screening.
7. Adequate hematologic and organ function, as indicated by defined laboratory values, prior to Cycle 1 Day 1.
8. Adequate cardiac function.

Key Exclusion Criteria:

1. Participants receiving cancer therapy (chemotherapy or other systemic anticancer therapies, immunotherapy, radiation therapy, or surgery) at the time of Cycle 1 Day 1.
2. Active infection requiring systemic treatment at the start of the study treatment.
3. Clinically significant cardiovascular disease and / or events within 6 months of signing the informed consent form.
4. Participants with toxicities that have not recovered to Grade ≤1 or stabilized and those Grade 2 toxicities listed as permitted in other eligibility criteria.
5. Participants with a history of pneumonitis or interstitial lung disease.
6. Participants with immune-related toxicities that have not resolved with appropriate management.
7. History or presence of gastrointestinal disease or other condition known to interfere with the absorption of drugs.
8. History of ulcerative colitis or Crohn's disease or protracted and ongoing immune-mediated diarrhea from prior checkpoint inhibitor use.
9. History of corneal perforation, keratitis, or severe dry eye.
10. Current evidence of symptomatic central nervous system metastases, leptomeningeal carcinomatosis, or untreated spinal cord compression.
11. Any active malignancy ≤3 years before Cycle 1 Day 1 except for the specific cancer under investigation in this study and any localized or noninvasive cancer that has been treated curatively.
12. Known hypersensitivity to rapidly accelerated fibrosarcoma (RAF) inhibitors, anti-epidermal growth factor receptor (EGFR) monoclonal antibodies, or their excipients.
13. Any known history of Grade ≥3 toxicity lasting >14 days from another RAF, mitogen activated protein kinase, extracellular signal-regulated kinase, or anti-EGFR antibody inhibitor requiring discontinuation of treatment from these drugs.
14. Receiving any treatment with a strong cytochrome P450 3A4 (CYP3A4) inhibitor or inducer ≤14 days (or 5 half-lives, whichever is longer) before Cycle 1 Day 1 and until completion of dosing with BGB-3245 for at least 5 half-lives.

NOTE: Other protocol defined Inclusion/Exclusion criteria apply. Summary of key criteria provided.

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

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Part 1: Dose Finding Part; Participants with advanced or metastatic CRC and with known mutation status and tumor harboring an oncogenic mutation of BRAF, KRAS, or NRAS and with documented disease progression by RECIST during or after at least 1 line of prior therapy will be enrolled into 4 planned sequentially run cohorts. Participants will receive escalating doses of BGB-3245 in combination with panitumumab to establish the MTD and RP2D by assessing the safety, tolerability, preliminary antitumor activity, and pharmacokinetics (PK) for the combination of BGB-3245 with panitumumab.	Drug: BGB-3245; Oral capsule; Other Names: Brimarafenib; Drug: Panitumumab; Intravenous (IV) infusion via an infusion pump; Other Names: Vectibix®
Experimental: Part 2: Dose Expansion Part, Group 1; Participants with advanced or metastatic CRC that harbors KRAS or NRAS mutations who have been treated and had documented disease progression by RECIST criteria during or after at least 1 line of prior therapy. Participants will receive the RP2D of BGB-3245 in combination with panitumumab to further evaluate the safety, PK, and assess the preliminary antitumor activity of the RP2D of the BGB-3245 and panitumumab combination.	Drug: BGB-3245; Oral capsule; Other Names: Brimarafenib; Drug: Panitumumab; Intravenous (IV) infusion via an infusion pump; Other Names: Vectibix®
Experimental: Part 2: Dose Expansion Part, Group 2; Participants with advanced or metastatic pancreatic ductal adenocarcinoma (PDAC) that harbors KRAS mutations who have been treated and had documented disease progression by RECIST criteria during or after at least 1 line of prior therapy. Participants will receive the RP2D of BGB-3245 in combination with panitumumab to further evaluate the safety, PK, and assess the preliminary antitumor activity of the RP2D of the BGB-3245 and panitumumab combination.	Drug: BGB-3245; Oral capsule; Other Names: Brimarafenib; Drug: Panitumumab; Intravenous (IV) infusion via an infusion pump; Other Names: Vectibix®

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Part 1: Number of Participants with Serious Adverse Events (SAEs)	Up to approximately 2 years
Part 1: Number of Participants with Treatment-emergent Adverse Events (TEAEs)	Up to approximately 2 years
Part 1: Number of Participants with Adverse Events of Special Interest (AESIs)	Up to approximately 2 years
Part 1: Number of Participants with Interruptions to Dosing with BGB-3245	Up to approximately 2 years
Part 1: Number of Participants with Reductions in Dosing with BGB-3245	Up to approximately 2 years
Part 1: MTD of BGB-3245	Up to approximately 2 years
Part 1: RP2D of BGB-3245	Up to approximately 2 years
Part 2: ORR as Assessed by Initial Investigator Review	Up to approximately 2 years

Secondary Outcome Measures

Outcome Measure	Time Frame
Part 1 and 2: Plasma Concentrations of BGB-3245 and Any Relevant Metabolites	Day 1 of each 28 day cycle (up to approximately 2 years)
Part 1: ORR as Assessed by Investigator Review using RECIST v1.1	Up to approximately 2 years
Part 2: ORR as Assessed by Central Review	Up to approximately 2 years
Part 1 and 2: Duration of Response (DoR)	Up to approximately 2 years
Part 1 and 2: Disease Control Rate (DCR)	Up to approximately 2 years
Part 1 and 2: Progression Free Survival (PFS)	Up to approximately 2 years
Part 2: Number of Participants with SAEs	Up to approximately 2 years
Part 2: Number of Participants with TEAEs	Up to approximately 2 years
Part 2: Number of Participants with AESIs	Up to approximately 2 years
Part 2: Number of Participants with Interruptions to Dosing with BGB-3245	Up to approximately 2 years
Part 2: Number of Participants with Reductions in Dosing with BGB-3245	Up to approximately 2 years

Collaborators and Investigators

• Sponsor: MapKure, LLC

Study record dates

Study Major Dates

• Study Start (Actual): April 18, 2024
• Primary Completion (Estimated): May 24, 2027
• Study Completion (Estimated): May 24, 2027

Study Registration Dates

• First Submitted: December 22, 2023
• First Submitted That Met QC Criteria: December 22, 2023
• First Posted (Actual): January 8, 2024

Study Record Updates

• Last Update Posted (Actual): April 24, 2024
• Last Update Submitted That Met QC Criteria: April 23, 2024
• Last Verified: April 1, 2024

More Information

Terms related to this study

• Keywords: Panitumumab; KRAS; BRAF; NRAS; Advanced or Metastatic RAS mutant Colorectal and Pancreatic Ductal Cancers; BGB-3245; Brimarafenib
• Additional Relevant MeSH Terms: Digestive System Diseases; Neoplasms; Neoplasms by Site; Gastrointestinal Neoplasms; Digestive System Neoplasms; Gastrointestinal Diseases; Colonic Diseases; Intestinal Diseases; Intestinal Neoplasms; Rectal Diseases; Colorectal Neoplasms; Antineoplastic Agents; Antineoplastic Agents, Immunological; Panitumumab
• Other Study ID Numbers: BGB-3245-EGFR-001

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES

Drug and device information, study documents

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