A Single-arm, Multi-center, Open, Phase II Study of Chidamide Combined With Toripalimab in Refractory and Advanced Soft-tissue Sarcoma
Soft tissue sarcoma is a relatively rare malignant tumor with an incidence of about 1-2/100,000. The best way to obtain evidence-based medical evidence is to participate in clinical trials with new drugs (especially targeted drugs and immunotherapy). Chidamide, an oral subtype-selective histone deacetylase inhibitor monotherapy was effective on the patients with hematological tumors by inhibiting HDAC activity and other ways, showing good anti-tumor activity. Histone deacetylase inhibitors (HDACi) may also reverse drug resistance or inefficiency of immunoassay inhibitors, and combination therapy has shown preliminary efficacy in a variety of tumors.Because of the poor prognosis of advanced soft tissue sarcoma, there is no standard second-line treatment. Therefore, we think it is necessary to explore the feasibility of combination of chidamide and Toripalimab monoclonal antibody in advanced, refractory and progressive soft tissue sarcoma after failure of standard treatment, and look forward to further improving the efficacy of soft tissue sarcoma.
⁃ Patients voluntarily participated in this study and signed the informed consent;
⁃ The pathology diagnosed with at least one measurable lesion according to RECIST 1.1 standard. The pathology includes synovial sarcoma, leiomyosarcoma, angiosarcoma, undifferentiated pleomorphic sarcoma/malignant fibrous histiocytoma, liposarcoma, fibrosarcoma, clear cell sarcoma, epithelioid sarcoma, malignant peripheral nerve sheath tumor, undifferentiated sarcoma, rhabdomyosarcoma, dermatofibrosareoma promberans, ewing's sarcoma /primary neural ectoderm tumors, desmoplastic small round cell tumor, inflammatory myofibroblastic sarcoma, malignant solitary fibroma. Except for chondrosarcoma, osteosarcoma, malignant mesothelioma, alveolar soft tissue sarcoma, gastrointestinal stromal tumor;
⁃ Advanced sarcoma patients with refractory or distant metastasis after failure of first-line standard therapy;
⁃ 14 \
• 70 years old; ECOG PS score: 0\
‣ 1; Expected survival beyond 3 months;
⁃ Adequate organ and bone marrow function, no serious hematopoietic dysfunction or heart, lung, liver, kidney, thyroid dysfunction and immune deficiency (no blood transfusion, granulocyte colony stimulating factor or other medical support was received within 14 days before the use of the research drug):
⁃ Major organs functions should meet the following standards within 7 days before treatment:
⁃ Blood routine examination standard (without blood transfusion within 14 days) :
⁃ Hemoglobin (HB) ≥90g/L; The absolute value of neutrophils (ANC) ≥1.5×109/L; Platelet (PLT) ≥80 ×109/L.
⁃ Biochemical examination shall meet the following standards:
⁃ Total bilirubin (TBIL) ≤ 1.5 times ULN (Upper Limit Of Normal); alanine aminotransferase （ALT）and aspartate aminotransferase AST≤2.5 times ULN. If accompanied by liver metastasis, ALT and AST≤5 times ULN；Serum creatinine（Cr）≤1.5 times ULN or creatinine clearance rate (CCr)≥ 60ml/min； Doppler ultrasound evaluation: left ventricular ejection fraction (LVEF) ≥ normal low limit (50%).
⁃ Thyrotropin (TSH) or free thyroxine (FT4) or free triiodothyronine (FT3) were all within the normal range (+10%).
⁃ Women of reproductive age should agree to use contraceptives (such as intrauterine devices, contraceptives or condoms) during and within 6 months after the study; Negative serum or urine pregnancy test within 7 days prior to study enrollment and must be non-lactating;
⁃ Men should agree to use contraceptives during and within 6 months after the study period.