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Study identifier: NCT04872166 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

A Study of BTX-A51 in People With Advanced Solid Tumor and Breast Cancer

Condition: Advanced Solid Tumor · Metastatic Breast Cancer  ·  Sponsor: Edgewood Oncology Inc.

PhasePhase 1
Planned participants112
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

This is a multicenter, open label, nonrandomized, sequential dose escalation/dose ranging, multiple dose study designed to evaluate the safety, toxicity, and PK as well as preliminary efficacy of BTX-A51 alone and in combination with fulvestrant in subjects with advanced solid tumors. The study will be done in three phases, described below. Phase 1a (Dose Escalation Phase): The Phase 1a portion is designed to determine the dose limiting toxicities (DLTs), maximum tolerated dose (MTD), and recommended Phase 2 dose (RP2D) of orally administered BTX-A51. BTX-A51 will be administered once daily on a weekly schedule of 5 days on/2 days off. Dose escalation will proceed according to a modified 3+3 design. Each cycle will consist of 28 days (4 weeks), and the DLT observation period will be the first cycle (i.e., 28 days after initiation of dosing). A DLT may be observed in no more than 0 out of 3 or 1 out of 6 subjects who have completed the DLT observation period before the next cohort initiates accrual. Barring DLT, sequential dose escalation of BTX-A51 is planned with up to a total of 6 dose levels; on the basis of these an MTD will be identified. The MTD is defined as the highest dose level with a subject incidence of DLTs of 0 or 1 out of 6 during the first 28 days of study drug dosing. A minimum of 6 subjects needs to be treated at a dose level before this dose level can be deemed as the MTD. Phase 1b (Monotherapy Dose Ranging Phase): Dose expansion may begin when the RP2D…

This description comes directly from the study's public registry record.

Talk to the study team

Zung Thai, MD  ·  415-225-9338  ·  zung@edgewoodonc.com

Edgar Bautista, BS  ·  edgar@edgewoodonc.com

Always discuss trial participation with your own doctor first.

Locations (6)

Florida Cancer SpecialistsLake Mary, Florida, United StatesRecruiting
Florida Cancer SpecialistsSarasota, Florida, United StatesRecruiting
The Linder Research Center at The Christ HospitalCincinnati, Ohio, United StatesCompleted
SCRI Oncology PartnersNashville, Tennessee, United StatesRecruiting
Tennessee Oncology, PLLCNashville, Tennessee, United StatesCompleted
The University of Texas MD Anderson Cancer CenterHouston, Texas, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT04872166