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Advanced Solid TumorPhase 1/2NCT05902988

A Phase I/II Study of VLS-1488 in Subjects With Advanced Cancer

A Phase 1/2 study testing VLS-1488 in people with Advanced Solid Tumor and High Grade Serous Adenocarcinoma of Ovary, run by Volastra Therapeutics, Inc. at 14 sites in United States.

Recruiting

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

Sites and contacts
Official record
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Trial summary

This is a first-in-human phase I/II study to examine the safety, tolerability and preliminary efficacy of VLS-1488 in subjects with advanced cancers. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
VLS-1488
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
200 participants
Where
14 sitesUnited States
Study dates
18 Oct 2023to Dec 2026
Phase
Phase 1/2
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

  • All Parts: Age ≥ 18 years, ECOG Performance Status ≤ 1, at least 1 site of measurable disease evaluable by CT scan or MRI per RECIST 1.1, able to take oral medication without alteration
  • Dose Escalation: No available therapeutic options to provide clinically meaningful benefits in the following tumor types: High Grade Serous Ovarian Cancer, Squamous Non -Small Cell Lung Cancer, Triple Negative Breast Cancer, Gastric Adenocarcinoma (not EBV+), Colorectal, Esophageal Squamous Cell Carcinoma, Esophageal Adenocarcinoma, Gastroesophageal Junction, Bladder (transitional cell), Head and Neck Squamous Cell Carcinomas (not nasopharynx, sinonasal or lip), Ovarian Carcinosarcoma, CN-high Endometrial/Uterine
  • Dose Expansion: Must have been previously treated with several lines of standard of care treatment specified in the protocol in the following tumor types: High Grade Serous Ovarian Cancer, Squamous Non-Small Cell Lung Cancer, Triple Negative Breast Cancer, Gastric Adenocarcinoma (not EBV+), Colorectal, Esophageal Squamous Cell Carcinoma, Esophageal Adenocarcinoma, Head and Neck Squamous Cell Carcinomas (not nasopharynx, sinonasal or lip), CN-high Endometrial/Uterine

Who cannot join

  • MSI-H, dMMR, POLE gene hotspot mutated, or known hypermutator phenotype
  • Previously received KIF18A inhibitor
  • Current CNS metastases or leptomeningeal disease
  • Cardiac parameters: MI or stroke ≤ 1 year, unstable angina/PE/DVT/CABG ≤ 6 months, NYHA Class ≥ II, LVEF < 50%
  • Inability to comply with concomitant medication restrictions with respect to strong inhibitors and inducers of CYP3A, and clinical inhibitors of MDR1 (P-gp) and BCRP
  • Any clinically significant ascites or pleural effusions at time of enrollment, or any therapeutic paracentesis or thoracentesis within 28 days of planned first dose of study drug
  • Bowel obstruction or GI perforation within 6 months of planned first dose of study drug

Trial locations and contacts

14 sites in 1 country. Contact the study team or a site near you to ask about taking part.

Volastra Therapeutics, Inc. contact

(646) 344-1248

clinicaltrials@volastratx.com

14 sites in 1 country

United States14 sites, 13 recruiting
  • University of Michigan

    Ann Arbor, Michigan, 48109

    Cancer AnswerLine, 800-865-1125, CancerAnswerLine@med.umich.edu

    Recruiting
  • University of Colorado Cancer Center

    Aurora, Colorado, 80045

    Yasmin Yazdani Farsad, 303-724-9403, YASMIN.YAZDANIFARSAD@CUANSCHUTZ.EDU

    Recruiting
  • Johns Hopkins Sidney Kimmel Comprehensive Cancer Center

    Baltimore, Maryland, 21224

    Matthew Bark, 443-927-8743, Mbark1@jhmi.edu

    Recruiting
  • The Christ Hospital

    Cincinnati, Ohio, 45219

    Abby Reed, RN, 513-585-1140, abby.reed@thechristhospital.com

    Recruiting
  • Kellogg Cancer Center

    Evanston, Illinois, 60201

    Michele Britto, (847) 570-2109, mbritto@northshore.org

    Recruiting
  • START Midwest

    Grand Rapids, Michigan, 49546

    Active, not recruiting
  • M.D. Anderson Cancer Center

    Houston, Texas, 77030

    Ecaterina Dumbrava, MD, 713-792-3934, eeileana@mdanderson.org

    Recruiting
  • Community Health Network

    Indianapolis, Indiana, 46256

    Megan Haas, mhaas2@ecommunity.com

    Recruiting
  • University of Southern California

    Los Angeles, California, 90033

    Xiomara Menendez, RN, Xiomara.Menendez@med.usc.edu

    Lorraine Martinez, MD, Lorraine.Martinez@med.usc.edu

    Recruiting
  • Froedtert & the Medical College of Wisconsin

    Milwaukee, Wisconsin, 53226

    Clinical Trials Office, 414-805-8900, cccto@mcw.edu

    Recruiting
  • Yale Cancer Center

    New Haven, Connecticut, 06511

    Ingrid Palma, 203-833-1034, ingrid.palma@yale.edu

    Recruiting
  • Memorial Sloan Kettering Cancer Center

    New York, New York, 10065

    Claire Friedman, MD, 646-888-4593, friedmac@mskcc.org

    Recruiting
  • Hoag Memorial Hospital

    Newport Beach, California, 92663

    Patrice Jones, 9497645501, patrice.jones@hoag.org

    Recruiting
  • Women & Infants Hospital

    Providence, Rhode Island, 02905

    Emma Locke, 401-430-8181, oncologyresearch@wihri.org

    Recruiting

Other trials in United States

About this study

Official title: A Phase I/II Study of VLS-1488 (an Oral KIF18A Inhibitor) in Subjects With Advanced Cancer

This is a first-in-human phase I/II study to examine the safety, tolerability and preliminary efficacy of VLS-1488 in subjects with advanced cancers.

Read the detailed description

This a first-in-human phase I/II study designed to assess the safety, tolerability and preliminary efficacy of VLS-1488 monotherapy and consists of two parts: Dose Escalation and Dose Expansion.

Dose Escalation will examine the safety and tolerability of VLS-1488 in different solid tumor types at various dose levels through a series of Dose Escalation and Backfill Cohorts to identify the Maximum Tolerated Dose (MTD) and to select dose levels for Dose Expansion. The criteria for dose (de-)escalation will be based on a Bayesian Optimal Interval (BOIN) design.

Dose Expansion will examine the safety, tolerability, Drug Drug Interaction (DDI) risk, Food Effect (FE) and preliminary efficacy of VLS-1488 in different tumor types and/or dose levels of interest through various expansion cohorts.

VLS-1488 will be given orally in 28-day cycles. Dosing will be continued until disease progression, unacceptable toxicity, withdrawal of consent, or other stopping criteria are met.

Being tested
VLS-1488
Keywords
KIF18A Inhibitor, HGSOC, TNBC, HNSCC, sqNSCLC
Medical subject headings
Triple Negative Breast Neoplasms, Squamous Cell Carcinoma of Head and Neck, Endometrial Neoplasms, Chromosomal Instability

What participants receive

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

  • VLS-1488Drug

    VLS-1488 tablets will be given orally.

Study groups in NCT05902988
Study groupRoleWhat they receive
Dose Escalation: Dose Escalation CohortsExperimentalSubjects will be enrolled at various doses and/or schedules of VLS-1488. These Dose Escalation Cohorts will be utilized to identify the MTD and to select dose levels for Dose Expansion.
Receives: Drug: VLS-1488
Dose Escalation: Backfill CohortsExperimentalAdditional subjects may be enrolled at any dose level that does not meet de-escalation or elimination rules per the BOIN design. These Backfill Cohorts will be utilized to build additional data to support selection of doses and/or tumor types for further study in Dose Expansion.
Receives: Drug: VLS-1488
Dose Expansion: Exploration CohortsExperimentalSubjects with a selected single tumor type will be randomized 1:1 into Exploration Cohorts at two or more dose levels of interest. A subset of subjects will have additional assessments to examine the potential for VLS-1488 to interact with other drugs and the effect of food on VLS-1488 absorption.
Receives: Drug: VLS-1488
Dose Expansion: Development CohortsExperimentalSubjects with other tumor types will be enrolled at a single dose level of interest. These Development Cohorts will be utilized to examine the preliminary efficacy of VLS-1488 in various tumor types.
Receives: Drug: VLS-1488

What is being measured

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

  1. Dose Escalation: Incidence of Dose Limiting Toxicities (DLTs) in DLT-evaluable subjects

    Measured: Up to 12 months

  2. Dose Escalation: Determination of the MTD of VLS-1488

    Measured: Up to 12 months

  3. Dose Escalation: Frequency of Serious Adverse Events (SAEs) graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE) version 5.0

    Measured: Up to 12 months

  4. Dose Escalation: Frequency of Treatment-related Adverse Events (AEs) graded per NCI-CTCAE version 5.0

    Measured: Up to 12 months

  5. Dose Escalation: Frequency of Treatment-Emergent AEs (TEAEs) graded per NCI-CTCAE version 5.0

    Measured: Up to 12 months

  6. Dose Escalation: Frequency of Dose Interruptions and Permanent Treatment Discontinuations

    Measured: Up to 12 months

  7. Dose Expansion: Frequency of Trigger Events (TEs)

    Measured: Up to 18 months

  8. Dose Expansion: Objective Response Rate (ORR) as assessed by Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1

    Measured: Up to 18 months

Secondary outcomes (19)
  1. Dose Escalation: ORR as assessed by RECIST version 1.1

    Measured: Up to 12 months

  2. Dose Expansion: Frequency of SAEs graded according to NCI-CTCAE version 5.0

    Measured: Up to 18 months

  3. Dose Expansion: Frequency of Treatment-related AEs graded according to NCI-CTCAE version 5.0

    Measured: Up to 18 months

  4. Dose Expansion: Frequency of TEAEs graded according to NCI-CTCAE version 5.0

    Measured: Up to 18 months

  5. Dose Expansion: Frequency of Dose Interruptions and Permanent Treatment Discontinuations

    Measured: Up to 18 months

  6. Dose Expansion: Area Under the Plasma Concentration-Time Curve (AUC) of Midazolam and its metabolite 1'-hydroxymidazolam

    Measured: Up to 18 months

  7. Dose Expansion: Maximum Plasma Concentration (Cmax) of Midazolam and its metabolite 1'-hydroxymidazolam

    Measured: Up to 18 months

  8. Dose Expansion: Evaluation of CA-125 response by Gynecologic Cancer InterGroup (GCIG) criteria (High Grade Serous Ovarian Cancer only)

    Measured: Up to 18 months

  9. Dose Escalation & Dose Expansion: Duration of Response (DOR) as assessed by RECIST version 1.1

    Measured: Up to 32 months

  10. Dose Escalation & Dose Expansion: Disease Control Rate (DCR) as assessed by RECIST version 1.1

    Measured: Up to 32 months

  11. Dose Escalation & Dose Expansion: Progression Free Survival (PFS) as assessed by RECIST version 1.1

    Measured: Up to 32 months

  12. Dose Escalation & Dose Expansion: Cmax of VLS-1488

    Measured: Up to 32 months

  13. Dose Escalation & Dose Expansion: AUC of VLS-1488

    Measured: Up to 32 months

  14. Dose Escalation & Dose Expansion: Trough Concentration (Ctrough) of VLS-1488

    Measured: Up to 32 months

  15. Dose Escalation & Dose Expansion: Time to Maximum Plasma Concentration (Tmax) of VLS-1488

    Measured: Up to 32 months

  16. Dose Escalation & Dose Expansion: Ratio of Total Cholesterol to 4β-hydroxycholesterol in plasma

    Measured: Up to 32 months

  17. Dose Escalation & Dose Expansion: Increase in the number of Phospho-Histone 3 positive tumor cells

    Measured: Up to 32 months

  18. Dose Escalation & Dose Expansion: Frequency of Micronucleated Reticulocytes in blood

    Measured: Up to 32 months

  19. Dose Escalation & Dose Expansion: Increase in Micronuclei in Circulating Tumor Cells

    Measured: Up to 32 months

Timeline

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

  1. First posted15 Jun 2023
  2. Study start18 Oct 2023
  3. Primary completionJun 2026 (estimated)
  4. Study completionDec 2026 (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 1/2
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Sequential
Masking
None (open label)
Enrolment
200 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05902988
Sponsor's protocol ID
VLS-1488-2201
Status last verified
Oct 2025
First submitted
31 May 2023
Last updated
4 Nov 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Undecided

Questions about this trial

What is this clinical trial studying?

A Phase 1/2 study testing VLS-1488 in people with Advanced Solid Tumor and High Grade Serous Adenocarcinoma of Ovary, run by Volastra Therapeutics, Inc. at 14 sites in United States.

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 3 inclusion and 7 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 4 Nov 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 14 sites in United States. 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 combined 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.

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

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 Volastra Therapeutics, Inc. ((646) 344-1248, clinicaltrials@volastratx.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Dose Escalation: Incidence of Dose Limiting Toxicities (DLTs) in DLT-evaluable subjects (time frame: Up to 12 months). The study lists 8 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 4 Nov 2025.

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