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Clinical Trial ● Currently Recruiting Phase I NCT05307705

A Study of LOXO-783 in Patients With Breast Cancer/Other Solid Tumors

A Study of LOXO-783 in Patients With Breast Cancer/Other Solid Tumors — Recruiting • Phase I • Oncology • NCT05307705.

📅 20 Jul 2026 ⏱ 2 min read
Currently Recruiting
This trial is actively seeking participants in the UK. Discuss eligibility with your patient before referring.
Status
Currently Recruiting
Phase
Phase I
NCT ID
NCT05307705
Sponsor
Eli Lilly and Company
Start
2022-05-11
ClinicaliQ Trial Snapshot
  • A Study of LOXO-783 in Patients With Breast Cancer/Other Solid Tumors — Recruiting • Phase I • Oncology • NCT05307705.
  • Drug and mechanism: LOXO-783 is being tested as a targeted therapy for breast cancer and solid tumors with specific genetic mutations, representing a precision medicine approach to oncology treatment.
  • Patient eligibility: The trial recruits patients with confirmed solid tumors (including breast cancer) who carry the targeted genetic alteration, ensuring treatment is directed at those most likely to benefit from this mechanism.
Use This Page For
  • Quick orientation before opening the registry record.
  • Checking recruitment status, phase and sponsor at a glance.
  • Connecting this trial to nearby guidelines, Drug Science and education.
What This Trial Is Studying

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.

Eligibility Snapshot
  • : * 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…

Use the source registry for the full inclusion and exclusion criteria before discussing referral or enrolment.

Full Trial Details
View this trial on the source registry
Eligibility criteria, protocol, and results when available
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