Open-Label Study of BBO-10203 in Subjects With Advanced Solid Tumors
A Phase 1a/1b Open-Label Study Evaluating the Safety, Tolerability, Pharmacokinetics, and Efficacy of BBO-10203 in Subjects With Advanced Solid Tumors (The BREAKER-101 Study)
TheRas, Inc., d/b/a BBOT (BridgeBio Oncology Therapeutics)
392 participants
Oct 29, 2024
INTERVENTIONAL
Conditions
Summary
First in human study to evaluate the safety, tolerability, and pharmacokinetics (PK) of BBO-10203, a PI3Kα:RAS breaker, alone and in combination with other anti-cancer agents in patients with advanced solid tumors.
Eligibility
Inclusion Criteria10
- Locally advanced and unresectable or metastatic HER2-positive advanced breast cancer (aBC), HR-positive/HER2-negative advanced breast cancer, KRAS mutant advanced colorectal cancer (aCRC), or KRAS mutant advanced non-small cell lung cancer (aNSCLC)
- Measurable disease by RECIST v1.1 (except for HR-positive HER2-negative aBC where evaluable bone-only disease is permitted)
- Eastern Cooperative Oncology Group (ECOG) performance status (PS) 0-1
- Adequate LVEF assessed by ECHO or MUGA (BBO-10203 + Trastuzumab cohorts only)
- Stable brain metastases
- Patients with HER2-positive aBC: Must have had at least 2 prior lines of anti-HER2-directed therapy. Only 1 prior line is acceptable where there is no other regionally available standard of care (SoC)
- Monotherapy Cohort patients with HR-positive, HER2-negative aBC, KRAS mutant aCRC or aNSCLC: Must have progression on, or disease recurrence after at least one line of SOC treatment or in the opinion of the investigator, would be unlikely to tolerate or derive clinically meaningful benefit from SoC therapy
- BBO-10203 + Fulvestrant combination cohort patients with HR-positive, HER2-negative aBC: confirmed PIK3CA mutation, must have been treated with a CDK4/6i
- BBO-10203 + Fulvestrant + ribociclib combination cohort patients with HR-positive, HER2-negative aBC: confirmed PIK3CA mutation, no prior systemic therapy in the aBC setting permitted
- BBO-10203 + FOLFOX + Bevacizumab combination cohort patients with KRAS mutant aCRC: One prior line of irinotecan-containing therapy for locally advanced or metastatic CRC is allowed but not required
Exclusion Criteria3
- Patients with KRAS mutant aCRC who have KRAS G12R mutation, BRAFV600E mutation, HER2amp, or dMMR/MSI-H tumors
- Patients with KRAS mutant aNSCLC who have KRAS G12R mutation, or tumors with other targetable driver mutations (eg, EGFR, anaplastic lymphoma kinase, ROS1/BRAF/RET/MET/EGFR exon20 insertion/NTRK/HER2)
- Patients with untreated and/or non-stable brain metastases
Interventions
Participants will receive assigned dose of BBO-10203 orally once daily
Participants will receive trastuzumab as infusion or subcutaneous injection every 21 days
Patients will receive Fulvestrant as an intramuscular injection every 28 days (additional dose on C1D15)
Patients will receive Ribociclib orally once a day (21 days on treatment, 7 days off)
Patients will receive FOLFOX as infusion every 14 days
Patients will receive bevacizumab as infusion every 28 days
Locations(31)
View Full Details on ClinicalTrials.gov
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NCT06625775