Testing ATX-295 for advanced solid tumors and ovarian cancer

A Phase 1/2, Open-Label, Dose-Escalation and Expansion First-In-Human Study of ATX-295, an Oral Inhibitor of the Kinesin Motor Protein KIF18A, in Patients With Locally Advanced or Metastatic Solid Tumors, Including High-Grade Serous Ovarian Cancer

Phase 1 Interventional Accent Therapeutics · NCT06799065

This study is testing a new oral medication called ATX-295 to see if it is safe and effective for people with advanced solid tumors, including ovarian cancer.

Quick facts

PhasePhase 1
Study typeInterventional
Enrollment90 (estimated)
Ages18 Years and up
SexAll
SponsorAccent Therapeutics Industry-sponsored
Locations5 sites (Sarasota, Florida and 4 other locations)
Trial IDNCT06799065 on ClinicalTrials.gov

What this trial studies

This clinical trial evaluates the safety and tolerability of ATX-295, an oral inhibitor of KIF18A, in patients with advanced solid tumors, including ovarian cancer. It is a first-in-human, Phase 1, open-label, single-arm, dose-escalation study aimed at determining the recommended phase 2 dose (RP2D) while assessing pharmacokinetics, pharmacodynamics, and preliminary anti-tumor activity. Patients with locally advanced or metastatic solid tumors will be enrolled to examine the drug's effects and safety profile. The study also explores biomarker responses related to ATX-295 exposure.

Who should consider this trial

Good fit: Ideal candidates include patients with histologically confirmed advanced solid tumors, particularly those who are platinum-resistant or have high-grade serous ovarian carcinoma.

Not a fit: Patients with clinically unstable central nervous system tumors or those receiving concurrent anti-cancer treatments may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a new therapeutic option for patients with advanced solid tumors and ovarian cancer who have limited treatment alternatives.

How similar studies have performed: While this approach is novel in humans, preclinical studies have shown promising anti-tumor activity of ATX-295 in various solid tumors.

Eligibility criteria

Show full inclusion / exclusion criteria
Key Inclusion Criteria:

* Patients with histologically confirmed solid tumors who have locally recurrent or metastatic disease, including HGSOC
* Refractory to or relapsed after all standard therapies with proven clinical benefit, unless as deemed by the Investigator, the subject is not a candidate for standard treatment, there is no standard treatment, or the subject refuses standard treatment after expressing an understanding of all available therapies with proven clinical benefit
* For the expansion cohorts, participants must have histological confirmation of HGSOC and be determined to be platinum-resistant, platinum-refractory, or platinum-intolerant
* There is no limit to the number of prior treatment regimens
* Have measurable or evaluable disease
* Have an Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 1

Key Exclusion Criteria:

* Clinically unstable central nervous system (CNS) tumors or brain metastasis
* Any other concurrent anti-cancer treatment, except for hormonal blockade
* Has undergone a major surgery within 3 weeks of starting study treatment
* Medical issue that limits oral ingestion or impairment of gastrointestinal function that is expected to significantly reduce the absorption of ATX-295, however participants with a functioning distal ileostomy or colostomy may be permitted on trial
* Clinically significant (ie, active) or uncontrolled cardiovascular disease
* Need to use proton pump inhibitors on study or H2-receptor antagonists for the dose escalation portion of the study.
* Unable to transition off strong or moderate CYP3A4 inhibitors or strong inducers
* Pregnancy or intent to breastfeed or conceive a child within the projected duration of treatment

Other inclusion and exclusion criteria as defined in the study protocol

Where this trial is running

Sarasota, Florida and 4 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Advanced Solid TumorsBreast Cancer RecurrentOvarian CancerHigh-grade Serous Ovarian CarcinomaTriple Negative Breast CancerKIFKIF18AHGSOC
Last reviewed 2026-06-15 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.