NCT06955156

Trilaciclib Combined With Anti-PD-1 Antibody and Chemotherapy in the Treatment of Locally Advanced TNBC

Trilaciclib in Combination With Anti-PD-1 Antibody and Chemotherapy in the Treatment of Locally Advanced Triple-negative Breast Cancer: A Prospective, Single-arm, Multicenter Phase II Clinical Study

• Status: Recruiting
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 50 (estimated)
• Sponsor: QIAO LI · Academic / Other
• Sex: All
• Age: 18 Years – 75 Years
• Healthy volunteers: Not accepted

Summary

Trilaciclib is a highly potent, selective, and reversible CDK4/6 inhibitor that protects bone marrow by protecting hematopoietic stem cells and progenitor cells (HSPCs) during systemic chemotherapy. The proliferation and differentiation of HSPCs are highly dependent on the CDK4/6 signaling pathway, and when exposed to the appropriate dose of treacilil, they will be blocked in the G1 phase of the cell cycle, thus avoiding the killing of cell cycle-specific chemotherapy drugs. This is an open, single-arm, multicenter Phase II clinical study. Newly diagnosed TNBC patients with T1c N1-2 or T2-4 N0-2 will be screened according to the inclusion criteria. Fifty patients meeting the inclusion criteria will sign informed consent letters and receive neoadjuvant therapy with Trilaciclib + anti-PD-1 antibody + Paclitaxel-albumin + carboplatin. To evaluate the synergistic effect of Trilaciclib on bone marrow protection and anti-tumor therapy.

Detailed description

Myelosuppression is the cause of many cancer chemotherapy-related adverse events, such as infections, sepsis, bleeding, and fatigue, resulting in delayed hospital stays or the need for treatment with hematopoietic growth factors, blood transfusions, and so on. In addition, myelosuppression usually leads to a lower dose or more extended interval of chemotherapy, which reduces the intensity of chemotherapy and affects the benefit of chemotherapy for patients. Trilaciclib is a highly potent, selective, and reversible CDK4/6 inhibitor that protects bone marrow by protecting hematopoietic stem cells and progenitor cells (HSPCs) during systemic chemotherapy. The proliferation and differentiation of HSPCs are highly dependent on the CDK4/6 signaling pathway, and when exposed to the appropriate dose of treacilil, they will be blocked in the G1 phase of the cell cycle, thus avoiding the killing of cell cycle-specific chemotherapy drugs. This is an open, single-arm, multicenter Phase II clinical study. Newly diagnosed TNBC patients with T1c N1-2 or T2-4 N0-2 will be screened according to the inclusion criteria. Fifty patients meeting the inclusion criteria will sign informed consent letters and receive neoadjuvant therapy with Trilaciclib + anti-PD-1 antibody + Paclitaxel-albumin + carboplatin. To evaluate the synergistic effect of Trilaciclib on bone marrow protection and anti-tumor therapy.

Conditions

• Triple Negative Breast Cancer

Interventions

Type	Name	Description
DRUG	Trilaciclib	trilaciclib 240mg/m2 ivgtt d1 Q3w; anti-PD-1 antibody 200mg ivgtt d1 Q3w; Paclitaxel-albumin 250mg/m2 ivgtt d1 Q3w or 125mg/m2 ivgtt d1,d8 Q3w; carboplatin AUC=5 ivgtt d1 Q3w; Review every 2 cycles until the best efficacy or intolerable toxicity, usually 6-8 cycles;

Timeline

• Start date: 2023-07-03
• Primary completion: 2025-05-01
• Completion: 2025-07-01
• First posted: 2025-05-02
• Last updated: 2025-05-02

Locations

1 site across 1 country: China