Clinical trial NCT06658080: Drug Sensitivity of Hydrothorax and Ascite Organoids from Breast Cancer
Official title: Drug Sensitivity Based on Hydrothorax and Ascite Organoids Derived from Metastasic Breast Cancer
Study type: OBSERVATIONAL
Overall status: RECRUITING
Conditions: Breast Cancer Metastatic
Hydrothorax
Ascites
Organoids
Drug Evaluation
Lead sponsor: Second Affiliated Hospital, School of Medicine, Zhejiang University
Sponsor class: OTHER
First posted: 2024-10-26
Enrollment: 90
Sex: ALL
Minimum age (years): 18
Maximum age (years): 70
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: PROSPECTIVE
Sampling method: PROBABILITY_SAMPLE
Study population: metastatic breast cancer patients with hydrothorax and ascite fluid

Brief summary: Malignant hydrothorax and ascitic fluid in advanced breast cancer often arise from metastasis to the lungs, pleura, or liver. Patients with this condition experience rapid disease progression and multidrug resistance, facing limited treatment options. Clinical guidelines offer various therapies based on molecular subtypes; however, their effectiveness can be hindered by prior treatments, patient health, and tumor evolution. Current evaluations of treatment efficacy typically take two cycles, delaying the recognition of ineffective therapies and resulting in unnecessary side effects and costs. Organoid models present a promising solution, accurately replicating tumor structure and cellular diversity compared to traditional methods. These patient-derived models facilitate improved drug sensitivity testing, leading to more personalized treatment plans. In this study, 90 patients diagnosed with metastatic breast cancer accompanied by hydrothorax and ascitic fluid will be recruited. Patient-derived organoids will be used to assess the sensitivity of chemotherapy regimens, including Doxorubicin, Carboplatin, Cyclophosphamide, and Paclitaxel, along with targeted therapies such as Herceptin and Pertuzumab.

Detailed description: 90 metastatic breast cancer patients with hydrothorax and ascitic fluid will be recruited. Baseline data, including medical history, ultrasound, and MRI records, will be collected both before and after two cycles of chemotherapy. Tumor samples from hydrothorax and ascitic fluid will be obtained and cultured to generate patient-derived organoids (PDOs). These PDOs will then be exposed to standard chemotherapeutic drugs used in breast cancer treatment. Organoid growth will be monitored post-treatment, and dose-response curves will be generated to assess drug sensitivity. To evaluate clinical outcomes, the RECIST criteria will be applied to measure tumor response in patients. Correlation analysis will be performed to determine the consistency between the treatment responses observed in the PDO models and the actual clinical outcomes of the patients.

Eligibility criteria: Inclusion Criteria:

1. Signed informed consent form and willingness to participate in the clinical study.
2. patients aged between 18 and 70 years old.
3. Confirmed metastatic breast cancer patients with hydrothorax and ascite fluid, which was verified to contain tumor cells by lab.
4. ECOG performance status score of 0-1.
5. No significant abnormalities in liver and kidney function (BIL \<1.5-fold upper limit of normal (ULN)；ALT\<2.5×ULN; AST\<2.5×ULN；Crea≤1×ULN).

Exclusion Criteria:

1.Patients not suitable for chemotherapy and target therapy

Primary outcomes:
measure: Correlation between drug sensitivity test results in patient-derived organoid models and clinical outcomes. The drug sensitivity test results obtained from patient-derived organoid models will be compared with the clinical outcomes.
timeFrame: 2024.10-2026.10
Secondary outcomes:
measure: The sensitivity and specificity would be checked between drug sensitivity of organoid models in predicting the efficacy of treatment.
timeFrame: 2024.10-2026.10
Other outcomes:
Locations:
city: Hangzhou
country: China
facility: Second affiliated hospital of zhejiang university
state: Zhejiang
city: Hangzhou
country: China
facility: Zhejiang Cancer Hospital
state: Zhejiang
city: Hangzhou
country: China
facility: 2 nd Affiliated Hospital, School of Medicine, Zhejiang University, China
state: Zhejiang
Study officials:
References: