A Study of TQB2102 for Injection in Patients With Recurrent/Metastatic Breast Cancer

Concomitant disease and medical history:

1. Has diagnosed and/or treated additional malignancy within 3 years prior to first administration of study drug;
2. Adverse effects due to any prior treatment have not been restored according to CommonTerminology Criteria for Adverse Events (CTCAE) 5.0 ≤ level 1 (Excluding hair loss);
3. Major surgical treatment, incision biopsy, or significant traumatic injury received within 28 days prior to study treatment;
4. Long-term unhealed wounds or fractures;
5. Patients who have a prior history of interstitial lung disease/pneumonia requiring steroid intervention, or who are present with interstitial lung disease/pneumonia, or who are suspected of having interstitial lung disease/pneumonia on screening imaging and cannot be ruled out;
6. Arterial/venous thrombosis events, such as cerebrovascular accident, deep vein thrombosis, and pulmonary embolism, occurred within 6 months before the first medication;
7. Patients who have a history of psychotropic substance abuse and are unable to abstain or have mental disorders;
8. Patients with any severe and/or uncontrolled disease;

Tumor related symptoms and treatment:

1. Patients who have been treated with other antitumor drug, such as chemotherapy, radical radiotherapy, or immunotherapy, within 4 weeks prior to the first dose, or who are still within 5 half-lives of the drug;
2. Received Chinese patent drugs with anti-tumor indications specified in the National Medical Products Administration (NMPA) approved drug instructions within 2 week before the study treatment;
3. Patients whose imaging shows that the tumor has invaded important blood vessels or who are determined by the investigators to be highly likely to invade important blood vessels during follow-up studies and cause fatal major bleeding;
4. Uncontrolled pleural effusion, ascites, and moderate or higher pericardial effusion requiring repeated drainage;
5. Known presence of cancerous meningitis or clinically active central nervous system metastasis; Patients who have been stable for at least 4 weeks after treatment and have been off corticosteroids for at least 2 weeks are excluded;
6. Patients with severe bone injury due to tumor bone metastasis;

Study treatment related: people who are known to be allergic to the study drug or its excipients, or to humanized monoclonal antibody products;

Patients who participated in and used other anti-tumor clinical trials within 4 weeks before the first medication;

In the judgment of the investigator, there is a situation that seriously endangers the safety of the subjects or affects the completion of the study.