Study of INX-315 for Advanced Breast and Ovarian Cancers

This study is testing a new oral medication called INX-315 for people with advanced breast cancer (specifically, hormone receptor positive and HER2 negative types that have worsened after prior treatment with a CDK4/6 inhibitor) or advanced ovarian cancer (platinum-resistant or refractory, with a specific genetic change called CCNE-1 amplification). Researchers want to understand how safe INX-315 is, how well your body handles it, and if it can help shrink tumors. INX-315 will be given alone or in combination with other drugs like fulvestrant or abemaciclib. The study will look at side effects and how well the treatment works over time, up to 12 months.

Study design
This is a Phase 1/2, open-label study, meaning you and your doctors will know what treatment you are receiving. It plans to enroll up to 150 participants.
What's involved
Participants will receive INX-315, either alone or with other medications. Dose-limiting toxicities (side effects that are severe enough to limit the dose) will be assessed during the first 28 days of treatment.
Compensation
Not stated in the trial record.
Follow-up
The study will evaluate side effects and laboratory changes for up to 12 months.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

NCT05735080

Open-Label Study to Evaluate the Safety, Tolerability, PK, and Efficacy of INX-315 in Patients With Advanced Cancer

Recruiting
PHASE1Ages 18+InterventionalTreatment
Incyclix Bio
~150 participants
Updated 2026-04-01 on ClinicalTrials.gov
What's tested:INX-315FulvestrantAbemaciclib

At a glance

Recruiting sites
17 of 18 listed sites are recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Part A and B: Evaluate the incidents of treatment emergent adverse events and laboratory abnormalities in INX-315 monotherapy and in combination with fulvestrant
Measured over Up to 12 months
+6 more outcomes measured
Breast Cancer
Breast Cancer Metastatic
Hormone Receptor Positive Tumor
Human Epidermal Growth Factor 2 Negative Carcinoma of Breast
Ovarian Cancer
CCNE1 Amplification
Solid Tumor
Advanced Cancer
Metastatic Cancer
18 sites across 12 states
Texas4
Georgia2
North Carolina2
Victoria2
Florida1
Indiana1
Massachusetts1
Michigan1

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  • Part A and B: Evaluate the incidents of treatment emergent adverse events and laboratory abnormalities in INX-315 monotherapy and in combination with fulvestrantUp to 12 months
  • Part A: Evaluate the occurrence of dose-limiting toxicities (DLTs) during Cycle 128 days
  • Part A: Recommend at least two doses of INX-315 to be evaluated in the expansion phaseUp to 12 months
  • Part B: Overall response rate (ORR)Up to 36 months
  • Part B: Selection of Recommended Phase 2 Dose (RP2D)Up to 36 months
  • Part C Evaluate the incidents of treatment emergent adverse events and laboratory abnormalities for patients in combination treatment (INX_315+abemaciclib+fulvestrant)Up to 12 months
  • Part C - Evaluate the antitumor activity of INX-315 in combination with abemaciclib and fulvestrantUp to 12 months