A Study of Calderasib (MK-1084) in KRAS Mutant Advanced Solid Tumors (MK-1084-001)

ClinicalTrials.gov ID

NCT05067283

Lead Sponsor

Merck Sharp & Dohme LLCINDUSTRY

Overall Status

Recruiting

Study Type

Interventional

Phase

Phase 1

Enrollment

830Estimated

Last Update Posted

Jul 31, 2026Actual

Start Date

Dec 17, 2021Actual

Primary Completion Date

Feb 25, 2030Estimated

Completion Date

Feb 25, 2030Estimated

Official Title

A Phase 1, Open-label, Multicenter Study to Assess Safety, Tolerability, PK, and Efficacy of MK-1084 as Monotherapy and as Part of Various Combination Therapies in Participants With KRAS G12C Mutant Advanced Solid Tumors

Brief Summary

This is a study evaluating the safety, pharmacokinetics, and efficacy of calderasib alone, and calderasib plus other combination therapies in participants with advanced solid tumors with identified kirsten rat sarcoma viral oncogene homolog G12C (KRAS G12C) mutation.

• Advanced Solid Tumors

• Calderasib
• Pembrolizumab
• carboplatin
• pemetrexed
• cetuximab
• oxaliplatin
• leucovorin
• 5-fluorouracil

Ages Eligible for Study

Adult (18-64)Older Adult (65+)

Sexes Eligible for Study

All

Accepts Healthy Volunteers

No

Eligibility Criteria

Inclusion Criteria:

For all participants:

• Has measurable disease by RECIST 1.1 criteria
• Has adequate organ function
• Male participants agree to protocol-specified contraception requirements including refraining from donating sperm and using protocol-specified contraceptives unless confirmed to be azoospermic
• Female participants must not be pregnant or breastfeeding, and must agree to protocol-specified contraceptive requirements and must have a negative highly sensitive pregnancy test within 24 hours (for a urine test) or 72 hours (for a serum test) before the first dose of study intervention

For Arm 1 - Has locally advanced unresectable or metastatic solid-tumor malignancy with histologically OR blood-based confirmation of KRAS G12C mutation who has received at least 1 line of therapy for systemic disease

For Arm 2

- Has an untreated metastatic non-small cell lung cancer (NSCLC) with histologically OR blood-based confirmation of KRAS G12C mutation and histologic confirmation of programmed cell death ligand 1 (PD-L1) tumor proportion score (TPS) ≥1%

For Arm 3

• Has locally advanced unresectable or metastatic solid-tumor malignancy with histological or blood-based confirmation of KRAS G12C mutation who has received at least 1 line of therapy for systemic disease Expansion Group A: 2L+NSCLC
• Has histologically or cytologically confirmed diagnosis of unresectable or metastatic NSCLC with histological or blood-based confirmation of KRAS G12C mutation and submits archival tumor sample
• Previous treatment failure of at least 1 line of systemic therapy Expansion Group B
• Has locally advanced unresectable or metastatic solid-tumor malignancy, excluding NSCLC or CRC, with histologically or blood- based confirmation of KRAS G12C mutation who has received at least 1 line of therapy for systemic disease

Arm 4 only - Has an untreated advanced or metastatic nonsquamous NSCLC with histologically or blood-based confirmation of KRAS G12C mutation

Arm 5 only

• Histologically or cytologically confirmed diagnosis of locally advanced unresectable or metastatic colorectal adenocarcinoma and with histologically or blood-based confirmation of KRAS G12C mutation
• Previous treatment failure of one or 2 previous line(s) of systemic therapy

Arm 6 only

- Locally advanced unresectable or metastatic colorectal adenocarcinoma with histologically or blood-based confirmation of KRAS G12C mutation

Exclusion Criteria:

• Has received chemotherapy, definitive radiation, or biological cancer therapy within 4 weeks (2 weeks for palliative radiation) before first dose of study intervention
• Has a history of second malignancy, unless potentially curative treatment has been completed with no evidence of malignancy for 5 years
• Has clinically active central nervous system (CNS) metastases and/or carcinomatous meningitis
• Has an active infection requiring systemic therapy
• Known history of HIV infection or. has a known history of Hepatitis B virus or known active Hepatitis C virus infection
• Has a history of interstitial lung disease, noninfectious pneumonitis requiring active steroid therapy, or ongoing pneumonitis
• Has an active autoimmune disease requiring systemic therapy
• Has not fully recovered from any effects of major surgical procedure without significant detectable infection
• Has one or more of the following ophthalmological findings/conditions: intraocular pressure >21 mm Hg and/or any diagnosis of glaucoma; diagnosis of central serous retinopathy, retinal vein occlusion, or retinal artery occlusion and/or a diagnosis of retinal degenerative disease excluding age-related macular degeneration
• Has received live or live-attenuated vaccine within 4 weeks of study start

Arm 4 Only

• Is unable to interrupt aspirin or other nonsteroidal anti-inflammatories (NSAIDs), other than an aspirin dose ≤1.3 grams per day, for at least 2 days (5 days for long-acting agents [for example, piroxicam]) before, during, and for at least 2 days after administration of pemetrexed.
• Is unable/unwilling to take folic acid, vitamin B12, and dexamethasone

Primary Purpose

Treatment

Allocation

Non-Randomized

Interventional Model

Parallel Assignment

Masking

None (Open Label)

Lead Sponsor

Merck Sharp & Dohme LLCINDUSTRY

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