Evaluation of the efficacy and safety of CalliSpheres® microsphere-transarterial chemoembolization in large hepatocellular carcinoma.

OBJECTIVE: The prognosis of large hepatocellular carcinoma (HCC) is still unfavorable due to limited and challenging treatment. CalliSpheres® microsphere-transarterial chemoembolization (CSM-TACE) is an effective therapy for general HCC but not frequently applied for large HCC. Hence, this study aimed to investigate the efficacy and safety of CSM-TACE in large HCC patients. MATERIALS AND METHODS: This prospective study analyzed 100 large HCC (tumor size >5 cm) patients receiving CSM-TACE. Treatment response, survival, change in liver function indexes, and adverse events were recorded. RESULT: The best complete response, partial response, stable disease, and progressive disease rates were 2.0%, 31.3%, 65.7%, and 1.0%, respectively, leading to the best objective response rate (ORR) of 33.3% and disease control rate of 99.9%. Multivariate analysis showed that intrahepatic metastasis was independently related to poor ORR (odd ratio = 0.366, P = 0.023). The 1- and 2-year progression-free survival (PFS) rates were 88.9% and 80.6%, with a mean [95% confidence interval (CI)] PFS of 21.6 (20.4-22.9) months. The 1- and 2-year overall survival (OS) rates were 99.0% and 99.0%, with a mean (95% CI) OS of 23.8 (23.3-24.2) months. Total bilirubin (P < 0.001), alanine transaminase (P < 0.001), aspartate transaminase (P < 0.001), and α-fetoprotein (P = 0.045) were abnormal in a short-term period then stably recovered from 1 month ± 15 days after drug-eluting bead-TACE to 24 months ± 15 days. During hospitalization and postdischarge, tolerable abdominal pain and decreased appetite were common adverse events. CONCLUSIONS: CSM-TACE shows favorable treatment response and survival with acceptable tolerance among large HCC patients, indicating that it may promote the management of these patients.

A Phase 1/2 Multicenter Randomized Trial of Local Ablation plus Toripalimab versus Toripalimab Alone for Previously Treated Unresectable Hepatocellular Carcinoma.

PURPOSE: To assess the safety and efficacy of local ablation plus PD-1 inhibitor toripalimab in previously treated unresectable hepatocellular carcinoma (HCC). PATIENTS AND METHODS: In the multicenter, two-stage, and randomized phase 1/2 trial, patients were randomly assigned to receive toripalimab alone (240 mg, every 3 weeks), subtotal local ablation followed by toripalimab starting on post-ablation day 3 (Schedule D3), or on post-ablation day 14 (Schedule D14). The first endpoint of stage 1 was to determine which combination schedule could continue and progression-free survival (PFS) as the primary endpoint for stage 1/2. RESULTS: A total of 146 patients were recruited. During stage 1, Schedule D3 achieved numerically higher objective response rate (ORR) than Schedule D14 for non-ablation lesions (37.5% vs. 31.3%), and was chosen for stage 2 evaluation. For the entire cohort of both stages, patients with Schedule D3 had a significantly higher ORR than with toripalimab alone (33.8% vs. 16.9%; P = 0.027). Moreover, patients with Schedule D3 had improved median PFS (7.1 vs. 3.8 months; P < 0.001) and median overall survival (18.4 vs. 13.2 months; P = 0.005), as compared with toripalimab alone. In addition, six (9%) patients with toripalimab, eight (12%) with Schedule D3, and 4 (25%) with Schedule D14 developed grade 3 or 4 adverse events, and one patient (2%) with Schedule D3 manifested grade 5 treatment-related pneumonitis. CONCLUSIONS: In patients with previously treated unresectable HCC, subtotal ablation plus toripalimab improved the clinical efficacy as compared with toripalimab alone, with an acceptable safety profile.

Hepatic Artery Infusion of Floxuridine in Combination With Systemic Chemotherapy for Pancreatic Cancer Liver Metastasis: A Propensity Score-Matched Analysis in Two Centers.

AIM: To evaluate the efficacy of hepatic artery infusion (HAI) of floxuridine (FUDR) in combination with systemic chemotherapy in patients with pancreatic cancer liver metastases (PCLM). PATIENTS AND METHODS: We retrospectively collected clinical data of 347 patients with PCLM who underwent first-line chemotherapy at two Chinese centers between 2012 and 2019. Propensity score matching between patients with and without HAI was performed to compensate for differences in baseline characteristics. Objective response rate (ORR) and overall survival (OS) between groups were compared. HAI pump functionality was recorded. RESULTS: Data of 258 patients (62 patients with HAI and 196 patients without HAI) were used for matching. After 1:1 ratio matching, 62 patients per group were included. The intrahepatic ORR was 66.1% in the HAI group and 22.6% in the non-HAI group (P < 0.001), and the extrahepatic ORR was 25.0 versus 28.9% (P = 0.679). The median OS was significantly longer in HAI group (14.0 versus 10.8 months, P = 0.001). Multivariance COX regression showed HAI led to a decrease in hazard ratio for death by 61.8% (HR = 0.382; 95% CI: 0.252-0.578; P< 0.001). Subgroup analysis revealed that patients without EHM, with higher intrahepatic tumor burden and with synchronous liver metastasis benefited more from HAI. Dysfunction of HAI pump occurred in 5.7% of patients during the period of follow-up. CONCLUSIONS: In patients with PCLM, first-line treatment with HAI FUDR plus SCT resulted in higher intrahepatic response and better OS.

Long Noncoding RNA TRIM52-AS1 Sponges miR-514a-5p to Facilitate Hepatocellular Carcinoma Progression Through Increasing MRPS18A.

Background: Hepatocellular carcinoma (HCC) is associated with high morbidity and mortality and has become the most frequently diagnosed liver cancer globally. Long noncoding RNAs have been widely studied because they exert essential functions in human diseases. Aim of the Study: The aim of the study is to explore the role and molecular regulatory mechanism of TRIM52-AS1 in HCC. Materials and Methods: Real-time quantitative polymerase chain reaction examined TRIM52-AS1, miR-514a-5p, and mitochondrial ribosomal protein S18a (MRPS18A) expression in HCC cells. Cell Counting Kit-8 (CCK-8), colony formation, flow cytometry, JC-1, transwell, and Western blot assays uncovered the function of TRIM52-AS1 in HCC. RNA immunoprecipitation (RIP), RNA pull down, and luciferase reporter assays validated the association among TRIM52-AS1, miR-514a-5p, and MRPS18A. Nuclear-cytoplasmic fractionation assay revealed the subcellular location of TRIM52-AS1 in HCC cells. Results: TRIM52-AS1 was revealed to be upregulated in HCC tissue samples according to GEPIA database. Consistent results were recognized in HCC cell lines. Subsequently, loss-of-function assays confirmed that TRIM52-AS1 ablation depressed cell proliferation, migration, invasion, and epithelial-to-mesenchymal transition process in vitro and inhibited tumor growth in vivo. Furthermore, the authors validated TRIM52-AS1 bound with miR-514a-5p in HCC. TRIM52-AS1 inversely regulated miR-514a-5p expression. Afterward, MRPS18A was identified to be a downstream target of miR-514a-5p. Ultimately, rescue assays manifested that MRPS18A upregulation could neutralize the attenuated effects resulting from TRIM52-AS1 deficiency. Conclusions: All in all, TRIM52-AS1 sponged miR-514a-5p to facilitate HCC progression through increasing MRPS18A expression. The findings highlight TRIM52-AS1 as a novel therapeutic target for HCC.

Hepatic artery infusion pump for nasopharyngeal carcinoma with liver metastasis.

To evaluate the benefits and risks of hepatic artery infusion (HAI) gemcitabine and floxuridine (FUDR) in patients with nasopharyngeal carcinoma liver metastases. HAI catheter systems were implanted under the guide of digital subtract angiography (DSA) in 16 patients with unresectable nasopharyngeal carcinoma liver metastases. HAI gemcitabine and FUDR in combination with radiotherapy and systemic chemotherapy were delivered. Disease control rate (DCR) of intrahepatic lesions is 100%, objective response rate (ORR) of intrahepatic lesions is 87.5%, including 4 patients (25%) with complete response (CR), 10 patients (62.5%) with partial response (PR) and 2 patients (12.5%) with stable disease (SD). The median overall survival (mOS) was 30 months. There was no significant difference between patients with < 9 intrahepatic lesions and patients with ≥ 9 intrahepatic lesions (31 months vs. 24 months, P = 0.562). Patients without extrahepatic metastases has longer survival than patients with extrahepatic metastases (31 months vs. 17 months, P = 0.005). In all 72 cycles of HAI, the main grade 3/4 toxicities related to HAI include: leukopenia occur in 8 cycles (11.1%), thrombocytopenia in 5 cycles (6.9%), AST/ALT elevation in 12 cycles (16.7). Catheter related complications occurred in 2 patients (12.5%). HAI gemcitabine and FUDR is effective to improve DCR of intrahepatic lesions and prolong mOS for patients with nasopharyngeal carcinoma liver metastases, and is associated with a relative low rate of toxicity.

Inflammation induced by incomplete radiofrequency ablation accelerates tumor progression and hinders PD-1 immunotherapy.

Radiofrequency ablation (RFA) promotes tumor antigen-specific T cell responses and enhances the effect of immunotherapy in preclinical settings. Here we report that the existence of remnant tumor masses due to incomplete RFA (iRFA) is associated with earlier new metastases and poor survival in patients with colorectal cancer liver metastases (CRCLM). Using mouse models, we demonstrate that iRFA promotes tumor progression and hinders the efficacy of anti-PD-1 therapy. Immune analysis reveals that iRFA induces sustained local inflammation with predominant myeloid suppressor cells, which inhibit T cell function in tumors. Mechanistically, tumor cell-derived CCL2 is critical for the accumulation of monocytes and tumor-associated macrophages (TAMs). The crosstalk between TAMs and tumor cells enhances the CCL2 production by tumor cells. Furthermore, we find that administration of a CCR2 antagonist or the loss of CCL2 expression in tumor cells enhances the antitumor activity of PD-1 blockade, providing a salvage alternative for residual tumors after iRFA.