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Solid TumorPhase 1NCT05737706

Study of MRTX1133 in Patients With Advanced Solid Tumors Harboring a KRAS G12D Mutation

A Phase 1 study testing MRTX1133 in people with Solid Tumor and Advanced Solid Tumor, run by Mirati Therapeutics Inc. at 14 sites in United States.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

A Phase 1/2 study of MRTX1133 in solid tumors harboring a KRAS G12D mutation. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
MRTX1133
Could I receive a placebo?
No, everyone receives an active treatment
How many people
63 participants
Where
14 sitesUnited States
Study dates
6 Mar 2023to 10 Mar 2025
Phase
Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Histologically confirmed diagnosis of a solid tumor malignancy harboring KRAS G12D mutation in tumor tissue or ctDNA.
  • Unresectable or metastatic disease.
  • Patients must have received standard therapies appropriate for their tumor type and stage; first-line treatment for PDAC for certain cohorts.
  • Presence of tumor lesions to be evaluated per RECIST v1.1:
  • in the Phase 1 dose escalation cohorts, patients must have measurable or evaluable disease.
  • in the Phase 1b and Phase 2 cohorts, patients must have measurable disease.
Show all 9Show fewer
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
  • Adequate organ function.
  • Age ≥ 18 years

Who cannot join

  • Active brain metastases or carcinomatous meningitis.
  • Prior treatment with a KRAS G12D inhibitor (Phase 1b \& Phase 2 only).
  • History of significant hemoptysis or hemorrhage within 4 weeks of the first dose of study treatment.
  • History of intestinal disease, inflammatory bowel disease, major gastric surgery, or other gastrointestinal conditions likely to alter absorption of study treatment or result in inability to swallow oral medications.
  • History of malignant small bowel obstruction.
  • Cardiac abnormalities.

Trial locations and contacts

14 sites in 1 country.

14 sites in 1 country

United States14 sites
  • Local Institution - 306

    Baltimore, Maryland, 21231

  • Local Institution - 308

    Boston, Massachusetts, 02114 3117

  • Local Institution - 310

    Boston, Massachusetts, 02215

  • Local Institution - 305

    Fairfax, Virginia, 22031

  • Local Institution - 314

    Grand Rapids, Michigan, 49546

  • Local Institution - 302

    Houston, Texas, 77030

  • Local Institution - 301

    Lady Lake, Florida, 32159 8987

  • Local Institution - 303

    Nashville, Tennessee, 37203

  • Local Institution - 309

    New Haven, Connecticut, 06520 8028

  • Local Institution - 312

    New York, New York, 10065 6800

  • Local Institution - 311

    Phoenix, Arizona, 85054

  • Local Institution - 304

    San Antonio, Texas, 78229 3307

  • Local Institution - 313

    San Antonio, Texas, 78229

  • Local Institution - 307

    Seattle, Washington, 98109 1023

Other trials in United States

About this study

Official title: A Phase 1/2 Multiple Expansion Cohort Trial of MRTX1133 in Patients With Advanced Solid Tumors Harboring a KRAS G12D Mutation

A Phase 1/2 study of MRTX1133 in solid tumors harboring a KRAS G12D mutation.

Read the detailed description

This first-in-human clinical trial will begin with an exploration of MRTX1133 dose and regimen. As potentially viable regimens are identified, Phase 1b expansion cohorts may be implemented to ensure collection of sufficient safety and PK information, and early evidence of clinical activity are available to recommend Phase 2 regimens. In Phase 2, separate cohorts of patients by histological diagnosis and/or baseline characteristics will be evaluated for the clinical activity and efficacy of MRTX1133.

This study was terminated prior to phase 2 initiating. Only phase 1 of the study was conducted.

Being tested
MRTX1133
Keywords
Non-Small Cell Lung Cancer, NSCLC, colorectal cancer, CRC, PDAC, KRAS, G12D, Solid Tumor, Advanced Solid Tumor, Malignant, Pancreatic Cancer, Pancreatic Adenocarcinoma
Medical subject headings
Carcinoma, Non-Small-Cell Lung, Colonic Neoplasms, Colorectal Neoplasms, Pancreatic Neoplasms

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • MRTX1133Drug

    KRAS G12D Inhibitor

Study groups in NCT05737706
Study groupRoleWhat they receive
Phase 1/1BExperimentalDose Escalation/Evaluation
Receives: Drug: MRTX1133
Phase 2ExperimentalMRTX1133 recommended Phase 2 dose administered to separate cohorts of patients with selected solid tumor malignancies with KRAS G12D mutation to include the following: NSCLC, PDAC, CRC, Other Solid Tumors
Receives: Drug: MRTX1133

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Phase 1: Number of Patients who Experience Dose-Limiting Toxicity

    Measured: 21 Days

  2. Phase 1/1b: Number of patients who experience a treatment-related adverse event

    Measured: Up to 2 years

  3. Phase 2: Objective response rate (ORR)

    Measured: 2 years

  4. Phase 2: Duration of response (DOR)

    Measured: 2 years

  5. Phase 2: Progression free survival (PFS)

    Measured: 2 years

  6. Phase 2: Overall survival (OS)

    Measured: 2 years

Secondary outcomes (6)
  1. Area under plasma concentration versus time curve (AUC)

    Measured: up to 4 days

  2. Time to achieve maximal plasma concentration (Tmax)

    Measured: up to 4 days

  3. Maximum observed plasma concentration (Cmax)

    Measured: up to 4 days

  4. Terminal elimination half-life (t1/2)

    Measured: up to 4 days

  5. Apparent total plasma clearance when dosed orally (CL/F)

    Measured: up to 4 days

  6. Apparent volume of distribution when dosed orally (Vz/F)

    Measured: up to 4 days

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted21 Feb 2023
  2. Study start6 Mar 2023
  3. Primary completion10 Mar 2025
  4. Study completion10 Mar 2025

Why it stopped: Formulation challenges

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Sequential
Masking
None (open label)
Enrolment
63 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05737706
Sponsor's protocol ID
CA246-0005
Other IDs
CA246-0005, 1133-001
Status last verified
Apr 2025
First submitted
10 Feb 2023
Last updated
6 Apr 2025
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing MRTX1133 in people with Solid Tumor and Advanced Solid Tumor, run by Mirati Therapeutics Inc. at 14 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 9 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 6 Apr 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 14 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study was stopped early (reason given: Formulation challenges). Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Phase 1: Number of Patients who Experience Dose-Limiting Toxicity (time frame: 21 Days). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Apr 2025; AzTrials last refreshed its copy on 26 Oct 2026.

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