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Study identifier: NCT05455619 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Evexomostat Plus PI3K or AKT Inhibitor and Fulvestrant in Patients With a PI3K Alteration and HR+/Her2- Breast Cancer

Condition: HR+/HER2-negative Breast Cancer · Metastatic Breast Cancer  ·  Sponsor: SynDevRx, Inc.

PhasePhase 1/Phase 2
Planned participants52
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

This is a Phase 1b/2, open-label, parallel-arms pilot study in men and post-menopausal women with hormone receptor positive (HR+), HER2- advanced or metastatic breast cancer with an alteration in the PI3K pathway, including a mutation of the PIK3CA gene, PTEN loss, or AKT1 mutation, designed to determine the safety of evexomostat (SDX-7320) plus standard of care treatment alpelisib (BYL-719) or capivasertib and fulvestrant (each combined, the 'triplet therapy'), to measure the severity and number of hyperglycemic events, and to assess clinical, anti-tumor benefit of the triplet therapy. The purpose of this study is: * to characterize the safety of the triplet drug combination consisting of either alpelisib or capivasertib (per the treating oncologist's choice) and fulvestrant plus evexomostat, * to test whether evexomostat, when given in combination with either alpelisib or capivasertib and fulvestrant will reduce the number and severity of hyperglycemic events and/or reduce the number or dose of anti-diabetic medications needed to control the hyperglycemia for metabolically normal patients and those deemed at risk for capivasertib and alpelisib-induced hyperglycemia (insulin resistance, as measured by HOMA-IR, baseline elevated HbA1c or well-controlled type 2 diabetes), and * to assess preliminary anti-tumor efficacy for each combination and changes in key biomarkers and quality of life in this patient population.

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

Talk to the study team

David Browning  ·  +1-615-975-7776  ·  dbrowning@syndevrx.com

James M Shanahan  ·  6174013110  ·  jshanahan@syndevrx.com

Always discuss trial participation with your own doctor first.

Locations (10)

Loma Linda University Cancer CenterLoma Linda, California, United StatesRecruiting
Hoag Memorial Hospital PresbyterianNewport, California, United StatesRecruiting
SHARP HealthcareSan Diego, California, United StatesRecruiting
Miami Cancer Institute at Baptist HealthMiami, Florida, United StatesRecruiting
Hope and Healing Cancer ServicesHinsdale, Illinois, United StatesRecruiting
Trinity HealthYpsilanti, Michigan, United StatesRecruiting
Cleveland ClinicCleveland, Ohio, United StatesRecruiting
Penn State Milton S Hershey Medical CenterHershey, Pennsylvania, United StatesRecruiting
Vanderbilt University Medical CenterNashville, Tennessee, United StatesRecruiting
Doctors Hospital of LaredoLaredo, Texas, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT05455619