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BTM-3566 in Advanced Solid Tumors

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

Who can join

Ages 18 and older · All sexes

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

About the study

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.

What is being tested

• BTM-3566 (drug)

Sponsor: Bantam Pharmaceuticals · Participants: 30 · Started: Dec 10, 2025

Contact the study team

• Kapadi BTM-3566 Project Manager · Phone: 984-849-4400
• Bantam Chief of Staff · Phone: 646-598-4823

Official record on ClinicalTrials.gov — NCT07266285

Locations in the U.S.

From ClinicalTrials.gov, data retrieved Oct 2, 2026. Each study sets its own eligibility; the study team decides who can join.