Real-world outcomes of toripalimab (JS001) in advanced non-small cell lung cancer: A multicenter retrospective study.

e21193 Background: In the past 3 years, immunotherapy has revolutionized the treatment paradigm of advanced non–small cell lung cancer (NSCLC). Checkpoint inhibitors showed promising results in the treatment of patients with advanced NSCLC with improved outcomes in clinical trials, but results from clinical trials can be difficult to generalize to real-world patient populations. Herein, we disclose the data of efficacy profile of toripalimab, a novel humanized IgG-4 mAb against programmed cell death protein 1 (PD-1), for NSCLC in a real-world setting in China. Methods: This retrospective study leveraged electronic health record (EHR) data collected during routine patient care in 8 cancer centers in China. The cohort included patients with mNSCLC who had received toripalimab for metastatic disease (n = 166) with > 1 EHR-documented visit from January, 2019, to June, 2020. Patients (age ≥ 18yrs) with pathologically or histologically diagnosed advanced NSCLC receiving toripalimab treatment were enrolled in this retrospective, multicenter, real-world study. The endpoints included progression-free survival (PFS), overall response rate (ORR), disease control rate (DCR) and duration of response (DOR). Results: Between January 2019 and June 2020, 166 patients from 8 centers were eligible. The median age was 60.6 years, 134(81.7%) male, 123(76.4%) diagnosed as stage IV lung cancer, 69(42.9%) squamous histology, 25 (21.9%) underwent prior surgery and 94 (57%) received prior chemotherapy. Toripalimab was administered as first, second, and further lines of therapy in 45(28.1%), 60(37.5%) and 55(34.4%) patients, respectively. Among them, 28(17.5%) patients received toripalimab as monotherapy. 22(13.8%) received in combination with antiangiogenic agent and 132(82.5%) in combination with chemotherapy. The 164 patients were eligible for efficacy evaluation. The ORR and DCR were 21.3% and 81.7% for all the evaluable patients. The median PFS was 15.0 months (95% CI 10.2 – NA). The median PFS of adenocarcinoma and squamous cell carcinoma were 15.4 months(95% CI 10.2-NA) and 13.4 months(95% CI 10.6-NA), respectively. The PFS in first line and further-line treatment were 15.4 months(95% CI 12.6-15.4) and 13.4 months(95% CI 7.0-NA). Stratified analysis revealed that the PFS of toripalimab monotherapy and combination treatment were 15.0 months(95% CI 12.6-15.0) and 15.4 months(95% CI 8-NA). The PFS were comparable between the patients received with or without anti-angiogenesis agents (11.5m vs 15.4m). Conclusions: Toripalimab monotherapy or in combination with chemotherapy and/or antiangiogenic agent in real world were effective in advanced NSCLC patients.

Chebulinic acid is a safe and effective antiangiogenic agent in collagen-induced arthritis in mice

Background Although vascular endothelial growth factor-A (VEGF)-induced angiogenesis has been reported to play an important role in the pathogenesis of rheumatoid arthritis (RA), serious side effects, mainly grade 2–3 hypertension, which is commonly observed with currently available anti-VEGF agents, can be detrimental for RA patients due to hypertension and associated cardiovascular complications seen in these patients. Thus, identification of anti-VEGF molecules that do not increase blood pressure could be useful for the treatment of RA. Chebulinic acid (CI), a water-soluble small-molecule tannin, can inhibit the actions of VEGF, and a report suggested that CI might not increase blood pressure due to its compensatory effects on the cardiovascular system. Therefore, the effects of CI on blood pressure in mice and the progression of the disease in a murine collagen-induced arthritis (CIA) model were investigated. Methods CIA was induced in DBA/1J mice with type II collagen. The effects of CI in these animals were then evaluated by determination of clinical, histopathological, and immunohistochemical parameters. The effects of CI on VEGF-induced proangiogenic genes and signaling pathways were examined in vitro and in vivo. Results Significant CD31 and VEGF expressions were detected in the synovial tissues of mice with CIA, similar to their expressions observed in human RA patients. However, treatment with CI significantly inhibited paw swelling, decreased the mean articular index and joint pathology scores in these animals through inhibition of VEGF-induced proangiogenic gene expressions and signaling pathways that regulate angiogenesis. Unlike currently used antiangiogenic agents, CI at a dose that inhibits VEGF actions did not increase blood pressure in mice. Conclusion CI can act as a safe and potent anti-VEGF antiangiogenic agent for the treatment of types of inflammatory arthritis, such as RA.