Clinical trial Recruiting at 11 sites Phase 1 Interventional Ages 18 and up

Investigating KQB365 for treating advanced solid tumors

Official title: A Phase 1/1b, Open-label, Multicenter, Dose Escalation and Dose Optimization Study Evaluating the Safety, Tolerability, Pharmacokinetics and Efficacy of KQB365 as Monotherapy and in Combination With Anti-cancer Agents in Participants With Advanced Solid Malignancies With KRAS G12S or G12C Mutations

Run by Kumquat Biosciences Inc. · NCT06720987 · Data updated 2026-11-12

This study tests if a new treatment called KQB365, alone or with another drug, can help adults with advanced solid tumors that have specific genetic mutations.

Quick facts

PhasePhase 1
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment140 (estimated)
SponsorKumquat Biosciences Inc.
Industry-sponsored
Drugs / interventionsCetuximab
Locations11 sites (Phoenix, Arizona and 10 other locations)
StatusRecruiting
StartedFebruary 4, 2025
Main results expectedJune 30, 2029
Study endsJune 30, 2030
Registry record updatedNovember 3, 2026
Trial IDNCT06720987 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include adults with unresectable or metastatic solid tumors that have KRAS G12C or G12S mutations.

Probably not a fit

Patients with active primary central nervous system tumors, significant cardiac abnormalities, or active interstitial lung disease may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial aims to evaluate the safety and efficacy of KQB365, both as a standalone treatment and in combination with cetuximab, for adults with advanced solid tumors harboring KRAS G12C or G12S mutations. Participants will receive weekly infusions of KQB365 and will undergo regular clinic visits to monitor their health and tumor response. The study will assess the safe dosage of KQB365, its effectiveness in reducing tumor size, and how the drug behaves in the body.

Why it matters

Potential benefit: If successful, this treatment could provide a new therapeutic option for patients with advanced solid tumors that currently have limited treatment options.

How similar studies have gone: Other studies targeting KRAS mutations have shown promise, indicating that this approach may be effective.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* PART 1 (monotherapy and combo therapy with KQB198): Histologically confirmed diagnosis of a solid tumor malignancy with either a KRAS G12C or KRAS G12S mutation.
* PART 1 (combo therapy with Cetuximab) \& PART 2: Histologically confirmed diagnosis of adenocarcinoma of the colon or rectum with either a KRAS G12C or KRAS G12S mutation.
* PART 1 (monotherapy Non-Small Cell Lung Cancer Cohort): Histologically confirmed diagnosis of Non-Small Cell Lung Cancer with either a KRAS G12C or KRAS G12S mutation.
* Unresectable or metastatic disease
* No available treatment with curative intent
* Adequate organ function
* Measurable disease per RECIST v1.1

Exclusion Criteria:

* Active primary central nervous system tumors
* Cardiac abnormalities
* Active interstitial lung disease
* Unable to swallow or GI condition that prevents absorption for patients in KQB198 combination cohorts

Where it's running

  • Mayo Clinic, Phoenix
    Phoenix, Arizona, United States
    Recruiting
  • Sarah Cannon Cancer Institute at HealthONE
    Denver, Colorado, United States
    Recruiting
  • Mayo Clinic, Jacksonville
    Jacksonville, Florida, United States
    Recruiting
  • Dana Farber Cancer Institute
    Boston, Massachusetts, United States
    Recruiting
  • START Midwest
    Grand Rapids, Michigan, United States
    Recruiting
  • Mayo Clinic, Rochester
    Rochester, Minnesota, United States
    Recruiting
Show 5 more locations
  • Cleveland Clinic, Taussig Cancer Institute
    Cleveland, Ohio, United States
    Recruiting
  • OU Health Stephenson Cancer Center
    Oklahoma City, Oklahoma, United States
    Recruiting
  • Sydney Kimmel Cancer Center
    Philadelphia, Pennsylvania, United States
    Recruiting
  • NEXT Oncology
    San Antonio, Texas, United States
    Recruiting
  • NEXT Virginia, LLC
    Fairfax, Virginia, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.