Purpose

The purpose of this study is to evaluate safety, tolerability, pharmacokinetics (PK), pharmacodynamics, and preliminary antitumor activity of BG-75098 alone and in combination with BGB-43395 and fulvestrant in participants with advanced solid tumors.

Condition

Eligibility

Eligible Ages
Over 18 Years
Eligible Sex
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Participants must have measurable disease as assessed by RECIST v1.1. - Participants must have a stable Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1. - Participants must have adequate organ function. - Dose Escalation Part A: Participants with histologically or cytologically confirmed advanced, metastatic, or unresectable solid tumors potentially associated with cyclin-dependent kinase 2 (CDK2) dependency. Participants should have received prior treatment with available standard-of-care (SOC) systemic therapies for advanced/metastatic disease, or for whom standard therapy is not available or not tolerated. - Dose Escalation Part B: Patients with histologically or cytologically confirmed advanced, metastatic, or unresectable solid tumors who have received ≥ 1 prior line of systemic therapy in the metastatic setting. - Dose Expansion Cohort 1: Participants with histologically or cytologically confirmed advanced, metastatic, or unresectable CDK4/6 inhibitor-progressed solid tumors. - Dose Expansion Cohort 2: Participants with advanced solid tumors. Participants with primary platinum refractory disease are not eligible. Participants should have received ≥ 1 line of platinum-containing chemotherapy and ≤ 4 prior therapeutic regimens in the advanced/metastatic setting.

Exclusion Criteria

  • For all cohorts: Prior therapy selectively targeting CDK2 inhibition or degradation. - For combination cohorts: Prior therapy selectively targeting CDK4. Prior CDK4/6 inhibitor standard of care therapy is permitted and required in local regions where it is approved and available. - Participants with active leptomeningeal disease or uncontrolled, untreated brain metastasis. NOTE: Other protocol defined Inclusion/Exclusion criteria may apply.

Study Design

Phase
Phase 1
Study Type
Interventional
Allocation
Non-Randomized
Intervention Model
Sequential Assignment
Primary Purpose
Treatment
Masking
None (Open Label)

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
Phase 1a, Part A: Dose Escalation, BG-75098 Monotherapy
Sequential cohorts of increasing dose levels of BG-75098 will be evaluated as monotherapy.
  • Drug: BG-75098
    Administered orally.
Experimental
Phase 1a, Part B: Dose Escalation, BG-75098 Combination
Sequential cohorts of increasing dose levels of BG-75098 will be evaluated in combination with BGB-43395 and fulvestrant.
  • Drug: BG-75098
    Administered orally.
  • Drug: BGB-43395
    Administered orally.
  • Drug: Fulvestrant
    Administered by intramuscular injection.
Experimental
Phase 1b, Cohort 1: Dose Expansion, BG-75098 Combination
Participants will receive BG-75098 at the recommended dose level from Phase 1a in combination with BGB-43395 and fulvestrant.
  • Drug: BG-75098
    Administered orally.
  • Drug: BGB-43395
    Administered orally.
  • Drug: Fulvestrant
    Administered by intramuscular injection.
Experimental
Phase 1b, Cohort 2: Dose Expansion, BG-75098 Monotherapy
Participants will receive BG-75098 as monotherapy at the recommended dose level from Phase 1a.
  • Drug: BG-75098
    Administered orally.

Recruiting Locations

University of Alabama At Birmingham Hospital
Birmingham, Alabama 35294-0004

More Details

Status
Recruiting
Sponsor
BeOne Medicines

Study Contact

Study Director
8778285568
clinicaltrials@beonemed.com

Detailed Description

This study will be conducted in 2 phases: Phase 1a Dose Escalation and Phase 1b Dose Expansion.

Notice

Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.