Phase 2 Breast Cancer Trial, Recruiting
Who may be able to join
AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI
Who might be able to join this trial:
- People who are willing to take part voluntarily and are able to follow the study schedule and visit requirements, and who have signed a consent form
- People aged 18 or older, of any gender
- People whose general physical functioning is rated as 0 or 1 on a standard health performance scale (confirm with trial site)
- People whose life expectancy is at least 12 weeks, as assessed by their doctor
- People with locally returning or spread (metastatic) advanced breast cancer that is ER-positive and HER2-negative, confirmed by a tissue or cell sample test
- People whose cancer has not responded to at least one previous hormone-based (endocrine) therapy
- People who have at least one tumour that can be measured on scans, according to a standard measurement system called RECIST v1.1
- People whose major organ functions (such as liver, kidneys, and blood) are within acceptable levels as required by the study
- People who are able and willing to use highly effective contraception throughout the treatment period and for 180 days after the last dose — this applies to women who could become pregnant and to men
- Women who could become pregnant must have a negative blood pregnancy test within 7 days before the first dose, and must not be breastfeeding at the time of joining
Who may not be able to join:
- People who have received a live or weakened-live vaccine within 4 weeks before starting the study drug
- People who have had major surgery on an organ within 4 weeks before starting the study drug
- People who need long-term or high-dose use of non-steroidal anti-inflammatory drugs (such as ibuprofen or similar medicines)
- People who still have side effects from a previous cancer treatment that have not improved to a mild level (grade 1 or lower)
- People with a known or suspected serious allergy to the study drug or any of its ingredients
- People who have had another active cancer within the 3 years before starting the study drug
- People who have cancer that has spread to the brain, or who have cancer affecting the membranes surrounding the brain or spinal cord
- People who have active tuberculosis, inflammation of the lungs from radiation, drug-related lung inflammation, lung scarring (pulmonary fibrosis), or other conditions that seriously affect lung function
- People who are unable to swallow tablets, or who have digestive system problems that their doctor thinks could affect how the drug is absorbed
- People who have had a serious heart or stroke-related condition within the 6 months before starting the study drug
- People with high blood pressure that remains poorly controlled despite taking multiple blood pressure medications
Important: Always verify eligibility with the trial site directly before applying.
Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.
GP referral letter
Print a one-page summary to share with your doctor.
Trial details
Where this trial is recruiting
Primary endpoints
Recommended Phase II Dose (RP2D) of QLS1304 in combo therapy; objective response rate(ORR)
Can't join this trial?
Data last synced from ClinicalTrials.gov: 12 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.