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NCT Number: NCT07266285

BTM-3566 in Advanced Solid Tumors

The goal of this clinical trial is to learn about what doses of BTM-356 are safe to use in adults with advanced cancers in solid tumors. It will also learn about how effective different doses of BTM-3566 are in treating cancer. The main questions it aims to answer are:

What adverse events and toxicities (harmful side effects) are associated with different doses of BTM-3566? What are the blood levels of BTM-3566 in your body at different timepoints? What effect does BTM-3566 have on reducing tumor size and/or preventing the worsening of cancer? All participants will receive BTM-3566 and none will receive placebo (a look-alike substance that contains no drug).

Participants will:

* Take BTM-3566 for 7 days, then take a 7 day break. This 2 week dosing schedule of 7 days on/7 days off will continue until your disease worsens or you cannot tolerate treatment. * Visit the clinic approximately 7 times during screening and the first month of treatment. Visits will be reduced to approximately 2 visits per month after. * Keep a diary of when (and how much) BTM-3566 you take, along with how much you weigh on each dosing day.

Recruiting

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1

Primary location

NEXT Houston, Houston, Texas, United States

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About this study

This study is a phase 1, open label, dose escalation study using single participant cohorts followed by 3+3 design to evaluate multiple ascending doses of BTM-3566.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Key Inclusion Criteria:

  • Any advanced, unresectable and/or metastatic solid tumors except for primary brain cancer, breast cancer, prostate cancer, pancreatic cancer, pheochromocytoma, fibrolamellar carcinoma, adrenocortical carcinoma, or ocular or cutaneous melanoma.
  • Must be refractory/relapsed after all standard therapies known to provide proven clinical benefit
  • ECOG Performance Status 0 to 2
  • Adequate organ function as defined by pre-specified laboratory values
  • Life expectancy > 3 months
  • Women of child-bearing potential (or males with female partners of child-bearing potential) must agree to use adequate contraceptive measures throughout the study and for 90 days following last dose

Key Exclusion Criteria:

  • Has not completed appropriate wash-out timeframes of prior anti-cancer treatments
  • Has ongoing toxicities from prior anti-cancer treatments
  • Has symptomatic or uncontrolled neurologic disease
  • Has active and clinically significant bacterial, fungal or viral infection
  • Cannot avoid use of moderate or strong CYP3A4 inhibitors or inducers; CYP2C19 substrates or OAT2 substrates with narrow therapeutic index; or drugs that prolong the QT interval throughout the study
  • Has previously received a total anthracycline dose ≥ 360mg/m2 doxorubicin or equivalent
  • Has a history of serious cardiac conditions or pulmonary or cerebrovascular events within 6 months of first dose
  • Is pregnant or breastfeeding

Treatment and study plan

BTM-3566

Drug

BTM-3566

Primary outcomes

  1. Frequency and type of dose limiting toxicities

    Time frame: 28 days

    Frequency and type of dose limiting toxicities associated with each dose level of BTM-3566

  2. Frequency and severity of adverse events

    Time frame: Through study completion, estimated 2 years

    Frequency and severity of adverse events according to NCI-CTCAE v 5.0

Secondary outcomes

  1. Pharmacokinetic properties of BTM-3566

    Time frame: 30 days

    Plasma concentration of BTM-3566 at each time point

  2. Clinical activity of BTM-3566

    Time frame: Through study completion, estimated 2 years

    Objective Response Rate by RECIST 1.1

  3. Clinical activity of BTM-3566

    Time frame: Through study completion, estimated 2 years

    Progression Free Survival per RECIST 1.1 principles

  4. Clinical activity of BTM-3566

    Time frame: Through study completion, estimated 2 years

    Overall Survival

  5. Clinical activity of BTM-3566

    Time frame: Through study completion, estimated 2 years

    Clinical Benefit Rate (proportion of patients having at least stable disease) according to RECIST 1.1 principles

  6. Clinical activity of BTM-3566

    Time frame: Through study completion, estimated 2 years

    Duration of Response, per RECIST 1.1 principles

Study contacts

Contact information is provided by the study sponsor or research team.

Bantam Chief of Staff

CONTACT

[email protected]

646-598-4823

Kapadi BTM-3566 Project Manager

CONTACT

[email protected]

984-849-4400

Sponsors and collaborators

Lead sponsor

Bantam Pharmaceuticals

Industry

Registry information

Official study title

A Phase 1 Trial of BTM-3566 in Advanced Solid Tumors

Important dates

Study start
2025
Primary completion
2027
Study completion
2027
First posted
Dec 5, 2025
Registry last updated
Dec 17, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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