Phase 1 dose-escalation of oral KST-6051 for adults with KRAS‑mutant advanced solid tumors
Official title: A First-in-human Phase 1 Dose Escalation and Dose Expansion Study Evaluating the Safety, Pharmacokinetics, Pharmacodynamics, and Preliminary Efficacy of KST-6051 in Patients With Advanced or Metastatic Solid Tumors With a KRAS Mutation
Run by Kestrel Therapeutics, Inc. · NCT07458347 · Data updated 2026-11-12
This trial will give oral KST-6051 to adults with advanced KRAS‑mutant solid tumors to see if it is safe, tolerable, and how the body processes the drug.
Quick facts
| Phase | Phase 1 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 545 (estimated) |
| Sponsor | Kestrel Therapeutics, Inc. Academic / other |
| Locations | 9 sites (Los Angeles, California and 8 other locations) |
| Status | Recruiting |
| Started | April 21, 2026 |
| Main results expected | April 2028 |
| Study ends | April 2029 |
| Registry record updated | October 15, 2026 |
| Trial ID | NCT07458347 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults (≥18) with histologically confirmed advanced or metastatic KRAS‑mutant solid tumors, ECOG 0–1, measurable disease, adequate organ function, and disease progression after or intolerance to standard treatments are the intended candidates.
✕Probably not a fit
Patients with prior RAS/KRAS inhibitor therapy, active central nervous system metastases, inability to take oral medication, or who are pregnant or breastfeeding are unlikely to benefit from participation.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This first-in-human, open-label, multicenter phase 1 trial uses a dose-escalation design to find safe and tolerable dose levels of orally administered KST-6051. Adults with advanced or metastatic KRAS‑mutant solid tumors (including NSCLC, PDAC, and CRC) whose disease progressed after or who cannot tolerate standard therapies are eligible. The study will collect safety data, pharmacokinetics, pharmacodynamics, and biomarker information while monitoring tumor response. Participants who benefit and can tolerate treatment may continue on study therapy.
Why it matters
Potential benefit: If successful, KST-6051 could provide a new oral treatment option for patients with KRAS‑mutant advanced solid tumors who have limited approved therapies.
How similar studies have gone: Some KRAS‑targeted drugs (for example, agents targeting KRAS G12C) have shown clinical activity for specific mutations, but KST-6051 is a first‑in‑human agent and its effectiveness in people is not yet known.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: 1. Age ≥ 18 years. 2. Willing and able to give written informed consent. 3. Histologically documented locally advanced and unresectable or metastatic NSCLC, PDAC, CRC, or other solid tumor. 4. Documentation of KRAS mutation prior to the first dose of trial drug(s). 5. Eastern Cooperative Oncology Group Performance Status (ECOG PS) of 0 or 1. 6. Adequate cardiovascular, hematological, liver, and renal function. 7. Measurable disease at baseline per Response Evaluation Criteria In Solid Tumors version 1.1 (RECIST 1.1). Exclusion Criteria: 1. Central nervous system (CNS) tumors or untreated or unstable metastases. 2. Inability to swallow oral medications. 3. Pregnant, breastfeeding, or expecting to conceive or father children within the projected duration of the trial. Other inclusion/exclusion criteria are specified in the protocol.
Where it's running
-
Cedars-Sinai Medical Center
Los Angeles, California, United States Recruiting -
Florida Cancer Specialists
Sarasota, Florida, United States Recruiting -
Moffitt Cancer Center
Tampa, Florida, United States Recruiting -
Mass General Brigham Cancer Institute at Massachusetts General Hospital
Boston, Massachusetts, United States Recruiting -
Sidney Kimmel Cancer Center
Philadelphia, Pennsylvania, United States Recruiting -
The University of Texas MD Anderson Cancer Center
Houston, Texas, United States Recruiting
Show 3 more locations
-
NEXT Oncology
San Antonio, Texas, United States Recruiting -
Huntsman Cancer Institute, University of Utah
Salt Lake City, Utah, United States Recruiting -
NEXT Virginia
Fairfax, Virginia, United States Recruiting
Study contacts
- Study coordinator: Kestrel Therapeutics, Inc.
- Email: clinicaltrials@kestreltherapeutics.com
- Phone: 617-612-6810
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
Phase I testing of HRS-6093 for advanced solid tumors with KRAS G12D mutation
This Phase I study will test whether the experimental drug HRS-6093 is safe, tolerable, and how it behaves in the body for adults with advanced solid tumors that carry the KRAS G12D mutation.
-
TLN-372 for advanced KRAS‑mutant solid tumors
This trial will test whether the experimental drug TLN-372, alone or with cetuximab or pembrolizumab, is safe and can control advanced KRAS‑mutant solid tumors.
-
Neoadjuvant fulzerasib plus cetuximab N01 for KRAS G12C–mutated locally advanced colorectal cancer
This trial will try a chemo-free combination of fulzerasib and cetuximab N01 before surgery in adults with KRAS G12C–mutated locally advanced colorectal cancer, including some with resectable metastases.
-
WEF-001 for advanced KRAS‑mutant solid tumors
This trial will try WEF-001 alone in people with advanced KRAS‑mutant solid tumors (such as pancreatic, colorectal, or non‑small cell lung cancer) to check safety, dosing, and early signs it can shrink tumors.
-
Evaluating BBO-10203 for advanced solid tumors
This study is testing a new treatment called BBO-10203, alone and with another drug, to see if it can help people with advanced solid tumors, including certain types of breast cancer.
-
Evaluating FMC-376 for advanced solid tumors with KRAS G12C mutations
This study is testing a new drug called FMC-376 to see if it can help people with advanced solid tumors that have a specific KRAS G12C mutation.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.