Study of NST-628 for Advanced Solid Tumors with MAPK Pathway Mutations

This study is testing a new oral tablet, NST-628, for people with advanced solid tumors that have specific genetic changes (MEK, RAF, KRAS, or NRAS mutations). NST-628 works by targeting the RAF and MEK parts of the MAPK pathway, which are involved in cancer growth. The study aims to find a safe and effective dose of NST-628 and see how well it shrinks tumors. You might be eligible if you are at least 18 years old, have a solid tumor that has spread or is locally advanced, and have already tried standard treatments. The study is currently recruiting participants.

Study design
This is a Phase 1, open-label, single-arm study with two parts: a dose escalation part (Part A) and a dose expansion part (Part B). It plans to enroll up to 230 participants.
What's involved
You would take NST-628 orally once daily in 28-day cycles. The study will involve regular visits to monitor your safety and how well the treatment is working.
Compensation
Not stated in the trial record.
Follow-up
Your safety and tumor response will be monitored through study completion, which is expected to be an average of 1 year.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

NCT06326411

A Study to Investigate the Safety and Efficacy of NST-628 Oral Tablets in Subjects With Solid Tumors

Recruiting
PHASE1Ages 18+InterventionalTreatment
Nested Therapeutics, Inc
~230 participants
Updated 2026-04-20 on ClinicalTrials.gov
What's tested:NST-628

At a glance

Recruiting sites
18 of 23 listed sites are recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Part A and B: Evaluate the safety of NST-628 in patients with advanced solid tumors
Measured over Through study completion, an average of 1 year
+2 more outcomes measured
Oncology
MEK Mutation
RAF Gene Mutation
Ras (KRAS or NRAS) Gene Mutation
Melanoma
NSCLC
Glioma
Solid Tumor, Adult
MAPK Pathway Gene Mutation
23 sites across 14 states
New York4
Texas3
California2
Tennessee2
New South Wales2
Victoria2
Colorado1
Connecticut1

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  • Part A and B: Evaluate the safety of NST-628 in patients with advanced solid tumorsThrough study completion, an average of 1 year

    Adverse effects

  • Part A: Determine the recommended dose for expansion of NST-628The first 28 days of treatment (DLTs)

    Dose limiting toxicities (DLTs)

  • Part B: Evaluate objective tumor response rateThrough study completion, an average of 1 year

    Objective response per RECIST v. 1.1 or other response assessment tool standard for a given tumor type.