Biomarkers of Efficacy and Tolerability of Sacituzumab-Govitecan in the Treatment of Patients With Triple-negative Breast Cancer in the Metastatic Phase: Prospective Multicenter Real-world Study (BIO-PROSA)

Regina Elena Cancer Institute

Status: Enrolling

Conditions: Breast Cancer

Treatments: Other: data collection

Study type: Observational

Funder types: Other

Identifiers

NCT06240195

RS1814/22

Details and patient eligibility

About

Observational, prospective, multicenter study. Collection of data relating to the effectiveness of sacituzumab govitecan SG, in a real-world context and planned research of predictive biomarkers of efficacy/tolerability carried out on multiple platforms at the center coordinator.

Full description

Identification and inclusion in the study of patients affected by metastatic triple-negative breast cancer mTNBC, treated with sacituzumab govitecan SG as indicated at the participating centers.

Histological and biomolecular characteristics will be evaluated both on the tumor at diagnosis and on tissue resulting from biopsy of the metastatic site, where available. Otherwise, the analyzes will come anyway carried out on the most recent and available tumor tissue, whether deriving from primary tumor or site metastatic.

The search for biomarkers predictive of efficacy/tolerability will be carried out on tumor tissue (where possible both primary and metastatic) and on circulating plasma collected at two separate time points (T0 and T1).

Biomolecular characterization on the biological material of the enrolled patients (tumor tissue and plasma) will be carried out at the end of the study.

The feasibility of organoid development and single-cell sequencing will be evaluated on a small subgroup of patients, among those enrolled at the coordinating center, considering the need for tumor tissue prepared fresh for both methods.

Enrollment: 60 estimated patients

Sex: Female

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Age ≥ 18 years;
• Histological diagnosis of TNBC;
• Locally advanced unresectable or metastatic disease;
• Indication for treatment with SG in monotherapy according to clinical practice (patients pre-treated with at least two lines of systemic therapy, of which at least one in an advanced stage);
• Availability of at least one tumor tissue sample (from primary tumor or metastasis) to be sent to the coordinating center (IRE);
• Written informed consent;
• Availability to comply with the procedures established by the protocol, according to the methods and times described.

Exclusion criteria

• Patients with a history of other malignancies;
• Contraindications to the use of sacituzumab govitecan SG;
• Untreated and/or clinically unstable (symptomatic) brain metastases.

Trial design

60 participants in 1 patient group

patients with metastatic triple-negative breast cancer treated with sacituzumab govitecan

Description:

The availability of at least one tumor tissue sample to be transferred to the coordinating center will be essential for enrollment in the study. For patients for whom a new sampling is scheduled biopsy of the tumor (primary or metastasis) as per clinical practice, the feasibility of the development will be assessed tumor organoids and the execution of single-cell sequencing on tumor tissue. In these cases, the order of priority in dividing the sampled tissue will be: sufficient quota to carry out the histological examination that will have to be carried out naturally confirm the diagnosis of triple-negative breast cancer. Quota to be prepared as a fresh preparation for the two experiments of feasibility indicated above; quota to be considered as a second sample, to be analyzed at the end of the study.

Treatment:

Other: data collection