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Solid TumorPhase 1NCT06797336

A Study of PT0253 in Participants With KRAS G12D Mutated Advanced Solid Tumors

A Phase 1 study testing PT0253, Chemotherapy Combination 1 and Chemotherapy Combination 2 in people with Solid Tumor, run by PAQ Therapeutics, Inc. at 15 sites in 2 countries.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
Search all trials

Trial summary

The primary purpose of this study is to evaluate the safety and tolerability, determine the maximally tolerated dose (MTD) and/or recommended Phase 2 dose(s) (RP2D) of PT0253 in adult participants with Kirsten rat sarcoma viral oncogene homolog (KRAS) G12D mutated advanced solid tumors as monotherapy. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Solid Tumor
What is being tested?
PT0253, Chemotherapy Combination 1 and Chemotherapy Combination 2
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
300 participants
Where
15 sitesin 2 countries
Study dates
19 Dec 2024to 16 Jun 2027
Phase
Phase 1
Are there results?
Not yet: the study is under way

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 or cytologically confirmed advanced or metastatic solid malignancy
  • Participant has a pathologically documented, locally advanced or metastatic malignancy with KRAS p.G12D mutation identified through molecular testing using a Clinical Laboratory Improvement Amendments (CLIA) certified, validated institutional or commercial test.
  • Measurable disease (RECIST 1.1 Criteria).
  • Eastern Cooperative Oncology Group (ECOG) Performance Status 0 or 1.
  • Willingness to avoid pregnancy or fathering children from screening through 90 days after the last dose of study treatment.

Who cannot join

  • Active brain metastasis or carcinomatous meningitis. If participants have had brain metastases resected or have received radiation therapy, they may be eligible if: (1) study treatment begins at least 4 weeks from the end of brain-specific therapy, (2) residual neurological symptoms Grade less than or equal to (<=) 2, (3) currently on stable doses of corticosteroids, and (4) pre-study brain magnetic resonance imaging (MRI) documents no new/worsening brain lesions.
  • History of any other malignancy within the past 2 years, except:
  • Malignancy treated with curative intent and with no known active disease present >=2 years before enrolment and felt to be at low risk for recurrence by the investigator
  • Basal or squamous cell carcinoma of the skin, in situ cervical cancer, early -stage endometrial cancer that has been definitively treated, superficial bladder cancer, Gleason 6/7 treated prostate cancer, and ductal carcinoma in situ or lobular carcinoma in situ of the breast.
  • Unresolved toxicities from prior anti-cancer therapies (Common Terminology Criteria for Adverse Events [CTCAE] grades >1), except for alopecia. Grade <=2 toxicities from prior anti-tumor therapies that are considered irreversible may be allowed, provided that they are not described in the exclusion criteria AND the investigator and medical monitor are in agreement to proceed.
  • Concurrent participation in another interventional clinical study.
Show all 28Show fewer
  • Treatment with anticancer medications or investigational drugs within the following intervals before the first administration of study drug:
  • At least 14 days for chemotherapy or targeted small-molecule therapy.
  • At least 28 days for a prior monoclonal antibody
  • At least 4 months for checkpoint inhibitors
  • At least 4 months for antibody-drug conjugates
  • At least 28 days or 5 half-lives (whichever is longer) for all other investigational study drugs or devices. For drugs with very long half-lives, participants may be allowed to enroll prior to 5 half-lives at the discretion of the investigator in discussion with the medical monitor. Note: Concurrent hormonal therapy for prostate or breast cancer is allowable.
  • Thoracic radiation within 4 months of starting study therapy.
  • Significant cardiovascular disease within 6 months of starting study therapy.
  • Active infection requiring antibiotics within 1 day of study treatment.
  • History of non-infectious interstitial lung disease (ILD) or pneumonitis.
  • Known HIV infection with a cluster of differentiation 4+ (CD4+) T-cell count less than (<) 200 cells per microliter [/mcL] and/or a detectable viral load per parameters of assay and/or on an anti-retroviral regimen containing a strong or moderate cytochrome (CY)P3A4/5 inhibitor or inducer and/or on a new anti-retroviral regimen for less than 28 days prior to the initiation of study treatment.
  • Known history of drug-induced liver injury; primary biliary cirrhosis; or ongoing extrahepatic obstruction caused by stones, cirrhosis of the liver, or portal hypertension.
  • Major surgery within 4 weeks of the start of study therapy or postoperative complications preventing the participant from adhering to protocol assessments and procedures.
  • Known hypersensitivity to any of the products to be administered during dosing.
  • Any disease or disorder that, in the opinion of the investigator, may compromise the ability of the participant to provide written informed consent and/or to comply with all required study procedures.
  • Part 1a (Dose escalation): Use of a strong or moderate CYP3A4/5 inhibitor or inducer, strong P-glycoprotein (P-gp) inhibitor or inducer or P-gp substrate.
  • Use of multidrug and toxin extrusion protein 1 (MATE) or MATE2-K substrates that cannot be discontinued prior to the start of study treatment.
  • Participants with laboratory values indicating inadequate hematology, hepatic, or renal function.
  • Clinically significant abnormalities in rhythm, conduction, or morphology of resting electrocardiogram (ECG) or baseline QT interval corrected for heart rate using Fridericia's formula (QTcF) >=450 milliseconds (msec).
  • Female participants who are pregnant or lactating/breast feeding or who plan to breastfeed while on study through 28 days after receiving the last dose of study drug.
  • Active hepatitis B virus (HBV) infection. Participants with resolved infection or who are on stable antiviral therapy are eligible.
  • Active hepatitis C virus (HCV) infection. Participants who have completed definitive antiviral therapy with post treatment confirmation of eradication are eligible.

Trial locations and contacts

15 sites in 2 countries. Contact the study team or a site near you to ask about taking part.

PAQ Therapeutics contact

781-819-2949

ClinicalTrials@paqtx.com

15 sites in 2 countries

United States9 sites, 7 recruiting
  • Dana Farber/Massachusetts General Hospital, Inc

    Boston, Massachusetts, 02215

    857-367-1486, lpappas3@mgb.org

    Leon Pappas, MD

    Recruiting
  • NEXT Virginia

    Fairfax, Virginia, 22031

    703-783-4510, aspira@nextoncology.com

    Alexander Spira, MD

    Recruiting
  • START Midwest

    Grand Rapids, Michigan, 49546

    616- 954-5554, manish.sharma@startresearch.com

    Manish Sharma

    Recruiting
  • START Los Angeles

    Los Angeles, California, 90025

    424-465-1820, navid.hafez@startresearch.com

    Navid Hafez

    Recruiting
  • SCRI Lake Mary

    Nashville, Tennessee, 37203

    Withdrawn
  • SCRI Oncology Partners

    Nashville, Tennessee, 37203

    Withdrawn
  • New Experimental Therapeutics of San Antonio LLC

    San Antonio, Texas, 78229

    (210) 580-9500, atolcher@nextoncology.com

    Dr. Anthony Tolcher

    Recruiting
  • START - South Texas Accelerated Research Therapeutics, LLC

    San Antonio, Texas, 78229

    (210) 593-5700, drasco@startsa.com

    Dr. Drew Rasco, MD

    Recruiting
  • START Mountain Region

    West Valley City, Utah, 84119

    2105809500, william.mckean@startresearch.com

    Dr. William McKean, MD

    Recruiting

Other trials in United States

South Korea6 sites, 6 recruiting
  • CHA University Bundang Medical Center

    Seongnam

    82-10-8556-7223, hongjaechon@gmail.com

    Hongjae Chon

    Recruiting
  • Asan Medical Center

    Seoul

    +82-2-3010-6981, changhm@amc.seoul.kr

    Heung-Moon Chang

    Recruiting
  • Samsung Medical Center

    Seoul

    82-2-3410-3459, oncopark@skku.edu

    Joon Oh Park

    Recruiting
  • Seoul National University Bundang Hospital

    Seoul

    kimjw05@snu.ac.kr

    Jin Won Kim

    Recruiting
  • Seoul National University Hospital

    Seoul

    82-2-2072-0701, Oohdoyoun@snu.ac.kr

    Do-Youn Oh

    Recruiting
  • Severance Hospital, Yonsei University Health System

    Seoul

    82-2-2228-8133, choihj@yuhs.ac

    Hye Jin Choi

    Recruiting

Other trials in South Korea

About this study

Official title: A Phase 1, Open-Label Dose Escalation and Expansion Study of PT0253 in Participants With KRAS G12D Mutated Advanced Solid Tumors

The primary purpose of this study is to evaluate the safety and tolerability, determine the maximally tolerated dose (MTD) and/or recommended Phase 2 dose(s) (RP2D) of PT0253 in adult participants with Kirsten rat sarcoma viral oncogene homolog (KRAS) G12D mutated advanced solid tumors as monotherapy.

Conditions
Solid Tumor
Being tested
PT0253, Chemotherapy Combination 1, Chemotherapy Combination 2, Chemotherapy Combination 3, Cetuximab
Keywords
KRAS

What participants receive

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

  • PT0253Drug

    PT0253 injection.

  • Chemotherapy Combination 1Drug

    Intravenous infusion.

  • Chemotherapy Combination 2Drug

    Intravenous infusion.

  • Chemotherapy Combination 3Drug

    Intravenous infusion.

  • CetuximabDrug

    Intravenous infusion.

Study groups in NCT06797336
Study groupRoleWhat they receive
Part 1a, Dose EscalationExperimentalParticipants with any type of solid tumor will receive PT0253 injection, intravenously (IV) until disease progression or intolerance.
Receives: Drug: PT0253
Part 1b, Dose Expansion: Tumor type 1ExperimentalParticipants with a previously treated tumor type will receive PT0253 injection in combination with intravenous infusion of Chemotherapy Combination 1 until disease progression or intolerance. Recommended dose or doses for expansion for Part 1b will be determined based on the safety, tolerability, pharmacokinetic (PK) and pharmacodynamic (PD) data for PT0253 established in Part 1a.
Receives: Drug: PT0253; Drug: Chemotherapy Combination 1
Part 1b, Dose Expansion: Tumor type 2ExperimentalParticipants with a previously treated tumor type will receive PT0253 injection in combination with intravenous infusion of Chemotherapy Combination 2 until disease progression or intolerance. Recommended dose or doses for expansion for Part 1b will be determined based on the safety, tolerability, PK and PD data for PT0253 established in Part 1a.
Receives: Drug: PT0253; Drug: Chemotherapy Combination 2
Part 1b, Dose Expansion: Tumor type 3ExperimentalParticipants with a previously treated tumor type will receive PT0253 injection in combination with intravenous infusion of Cetuximab until disease progression or intolerance. Recommended dose or doses for expansion for Part 1b will be determined based on the safety, tolerability, PK and PD data for PT0253 established in Part 1a.
Receives: Drug: PT0253; Drug: Cetuximab
Part 1b, Dose Expansion: Tumor type 4ExperimentalParticipants with a previously treated tumor type will receive PT0253 injection in combination with intravenous infusion of Chemotherapy Combination 3 until disease progression or intolerance. Recommended dose or doses for expansion for Part 1b will be determined based on the safety, tolerability, PK and PD data for PT0253 established in Part 1a.
Receives: Drug: PT0253; Drug: Chemotherapy Combination 3

What is being measured

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

  1. Number of Participants with Dose-limiting Toxicities (DLT)

    Measured: Cycle 1 (Cycle length=21 days)

  2. Number of Participants with Treatment-Emergent Adverse Events (TEAEs)

    Measured: Up to 24 months

  3. Number of Participants with TEAEs Leading to Treatment Interruptions, Dose Reductions and Permanent Discontinuations

    Measured: Up to 24 months

Secondary outcomes (11)
  1. Cmax/C0: Maximum Blood Concentration (Cmax) and/or Concentration at Time 0 (C0) of PT0253

    Measured: Cycle 1 Days 1 and 15: Pre-infusion and up to 24 hours post-infusion (Cycle length=21 days)

  2. Tmax: Time to Reach Cmax of PT0253

    Measured: Cycle 1 Days 1 and 15: Pre-infusion and up to 24 hours post-infusion (Cycle length=21 days)

  3. AUC0-t: Area Under the Curve From time 0 to the time of the Last Quantifiable Concentration of PT0253

    Measured: Cycle 1 Days 1 and 15: Pre-infusion and up to 24 hours post-infusion (Cycle length=21 days)

  4. t1/2: Terminal Elimination Half-life of PT0253

    Measured: Cycle 1 Days 1 and 15: Pre-infusion and up to 24 hours post-infusion (Cycle length=21 days)

  5. AUC0-∞: Area Under the Curve From Time 0 Extrapolated to Infinity of PT0253

    Measured: Cycle 1 Days 1 and 15: Pre-infusion and up to 24 hours post-infusion (Cycle length=21 days)

  6. CL: Clearance of PT0253

    Measured: Cycle 1 Days 1 and 15: Pre-infusion and up to 24 hours post-infusion (Cycle length=21 days)

  7. Vd: Volume of Distribution of PT0253

    Measured: Cycle 1 Days 1 and 15: Pre-infusion and up to 24 hours post-infusion (Cycle length=21 days)

  8. Overall Response Rate (ORR)

    ORR will be determined by radiographic disease assessments per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1.

    Measured: Up to 24 months

  9. Duration of Response (DOR)

    DOR will be determined by radiographic disease assessments per RECIST 1.1.

    Measured: Up to 24 months

  10. Overall Survival (OS)

    OS is defined as the time from enrollment up to death due to any cause.

    Measured: At 1 year

  11. Progression-free Survival (PFS)

    PFS will be determined by radiographic disease assessments per RECIST 1.1.

    Measured: At 1 year

Timeline

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

  1. First posted28 Jan 2025
  2. Study start19 Dec 2024
  3. Primary completion15 Dec 2026 (estimated)
  4. Study completion16 Jun 2027 (estimated)

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
Randomised
Intervention model
Sequential
Masking
None (open label)
Enrolment
300 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06797336
Sponsor's protocol ID
PT0253-101
Status last verified
Aug 2026
First submitted
22 Jan 2025
Last updated
7 Oct 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing PT0253, Chemotherapy Combination 1 and Chemotherapy Combination 2 in people with Solid Tumor, run by PAQ Therapeutics, Inc. at 15 sites in 2 countries.

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 5 inclusion and 28 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: looking for participants now, as of the sponsor's last update on 7 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 15 sites in United States, South Korea. 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?

This study is still under way. Results are not available in the source record yet.

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

Contact PAQ Therapeutics (781-819-2949, ClinicalTrials@paqtx.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Participants with Dose-limiting Toxicities (DLT) (time frame: Cycle 1 (Cycle length=21 days)). The study lists 3 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 7 Oct 2026.

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