A Study of LOXO-783 in Patients With Breast Cancer/Other Solid Tumors (NCT05307705) | Clinical Trial Compass
Active — Not RecruitingPhase 1
A Study of LOXO-783 in Patients With Breast Cancer/Other Solid Tumors
United States, Australia, Belgium193 participantsStarted 2022-05-11
Plain-language summary
The main purpose of this study is to learn more about the safety, side effects, and effectiveness of LOXO-783. LOXO-783 may be used to treat breast cancer and other solid tumors that have a change in a particular gene (known as the PIK3CA gene). Participation could last up to 36 months (3 years) and possibly longer if the disease does not get worse.
Who can participate
Age range
18 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Have advanced breast cancer or another solid tumor with the presence of a phosphatidylinositol 3-kinase catalytic subunit alpha (PIK3CA) H1047R mutation (or other Sponsor and safety review committee (SRC)-approved, activating PIK3CA mutations other than H1047R mutation)
* Have adequate archival tumor tissue sample available or be approved by the Sponsor for enrollment if no tumor sample is available.
* Have stopped all cancer treatment and have recovered from the major side effects
* Have adequate organ function, as measured by blood tests
* Have a performance status of 0 or 1 on the Eastern Cooperative Oncology Group (ECOG) scale
* Patients must have
* Measurable disease
\--- Patients with non-breast tumor types must have at least 1 measurable lesion
* Non-measurable bone disease (at least 1 bone lesion in breast cancer patients only)
* For patients with an estrogen receptor (ER)+ breast cancer diagnosis:
* If female, must be postmenopausal
* If male, must agree to use hormone suppression
* Phase 1a:
\-- Dose escalation and backfill patients:
* Advanced solid tumor
* Patients may have had up to 5 prior regimens for advanced disease
* Phase 1b:
* Part A:
* ER+/human epidermal growth factor receptor 2 (HER2)- advanced breast cancer
* Patients may have had up to 5 prior regimens for advanced disease ---- Prior cyclin dependent kinase (CDK)4/6 inhibitor therapy required
* Part B:
* ER+/HER2- advanced breast cancer
…
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Phase 1 a: To determine the maximum tolerated dose/recommended phase 2 dose (MTD/RP2D) of LOXO-783: Number of patients with dose-limiting toxicities (DLTs)
Timeframe: During the first 28-day cycle of LOXO-783 treatment
2
Phase 1 a: To determine the MTD/RP2D of LOXO-783: Number of patients with DLT-equivalent toxicities
Timeframe: During the first 28-day cycle of LOXO-783 treatment