CalliSpheres® drug-eluting beads (DEB) transarterial chemoembolization (TACE) is equally efficient and safe in liver cancer patients with different times of previous conventional TACE treatments: a result from CTILC study

5-Fluorouracil combined with CalliSphere drug-eluting beads or conventional transarterial chemoembolization for unresectable hepatocellular carcinoma: a propensity score weighting analysis

This study aimed to assess the effectiveness and safety of 5-Fluorouracil (5-Fu) combined with conventional transarterial chemoembolization (cTACE) compared to 5-Fu combined with drug-eluting bead transarterial chemoembolization (DEB-TACE) using CalliSpheres for the treatment of unresectable hepatocellular carcinoma (HCC) using propensity score weighting methods. This retrospective analysis included 131 patients with HCC treated with 5-Fu combined with cTACE (5-Fu-cTACE group, n = 65) or DEB-TACE (5-Fu-DEB-TACE group, n = 66) at the Affiliated Hospital of North Sichuan Medical College from January 2019 to December 2022. Based on the baseline data and laboratory indicators, propensity score weighting was used to reduce confounding bias. Modified response evaluation criteria in solid tumors (mRECIST) were used to evaluate clinical efficacy. The primary endpoint was progression-free survival (PFS), and the secondary endpoints were the disease control rate (DCR), objective response rate (ORR) and adverse events (AEs). PFS was assessed using Kaplan‒Meier analysis and Cox proportional hazards models. The ORRs at 1 month (M1) after treatment in the 5-Fu-DEB-TACE group and 5-Fu-cTACE group were 90.9% and 76.9%, respectively (P = 0.029), while at this time, the DCRs were 93.9% in the 5-Fu-DEB-TACE group and 90.8% in the 5-Fu-cTACE group (P = 0.494). At 3 months (M3) after treatment, the 5-Fu-DEB-TACE group had a higher ORR (84.8% vs. 56.9%, P < 0.001) and DCR (84.8% vs. 72.3%, P = 0.08). The ORR at 6 months (M6) was also higher in the 5-Fu-DEB-TACE group than in the 5-Fu-cTACE group (72.7% vs. 50.8%, P = 0.01). The median PFS after treatment with 5-Fu-DEB-TACE was longer than that after treatment with 5-Fu-cTACE (11 months vs. 6 months) (P = 0.004). Cox proportional hazards regression analysis indicated that 5-Fu-DEB-TACE (HR = 0.590, P = 0.044), Model for End-Stage Liver Disease (MELD) intermediate risk (HR = 2.470, P = 0.010), BCLC stage B (HR = 2.303, P = 0.036), BCLC stage C (HR = 3.354, P = 0.002) and ascitic fluid (HR = 2.004, P = 0.046) were independent predictors of PFS. No treatment-related deaths occurred in this study. The 5-Fu-DEB-TACE group had a greater incidence of abdominal pain (72.7% vs. 47.7%, P = 0.003). However, the incidence of postoperative elevated transaminase levels was higher in the 5-Fu-cTACE group (83.1% vs. 66.6%, P = 0.031). Subgroups analysis showed patients receiving 5-Fu-DEB-TACE have better PFS compared to those receiving 5-Fu-cTACE in the BCLC stage A group (P = 0.0093), BCLC stage B group (P = 0.0096), multifocal group (P = 0.0056), Child-Pugh stage A group (P<0.001), non- extrahepatic metastasis group (P = 0.022), non-vascular invasion group (P = 0.0093), and the group with a largest tumor diameter ≥ 5 cm (P = 0.0048). At M1, M3, and M6, patients with preserved liver function and in some cases of low tumor burden had higher Objective Response Rate (ORR) and Disease Control Rate (DCR) (P < 0.05). Compared with 5-Fu-cTACE, 5-Fu-DEB-TACE has superior therapeutic efficacy, prolongs PFS, and reduces hepatotoxicity. However, it is associated with an increased incidence of postoperative abdominal pain.

Tumor diameter and enhancing capsule, as well as previous interventional treatments, as potential predictors of vascular lake phenomenon in hepatocellular carcinoma patients treated with drug-eluting beads transarterial chemoembolization

Objectives

The initial drug-eluting bead (DEB)-transarterial chemoembolization (TACE) are often performed after multiple sessions of transarterial infusion chemotherapy (TAI) or conventional TACE. The purpose of our study was to evaluate the factors associated with the occurrence of vascular lake phenomenon (VLP) during DEB-TACE, considering the previous interventional treatments.

Material and Methods

Forty-nine initial DEB-TACE procedures in 49 patients between November 2010 and April 2024 were included in this retrospective study. VLP was defined as a localized pooling of contrast agents within the tumor in the venous phase of digital subtraction angiography. The laboratory data, pre-treatment imaging findings such as the maximum tumor diameter (≥3 cm or <3 cm) and the presence of enhancing capsule obtained from computed tomography or magnetic resonance imaging, size of DEBs, and loading drugs, the total number of previous interventional treatments were recorded and compared between VLP occurrence and VLP non-occurrence groups. The multivariate logistic regression analysis was performed to explore the association of factors in predicting VLP occurrence.

Results

VLP was observed in 16 patients (32.65%) out of 49 patients. The maximum tumor diameter (≥3 cm) and the presence of the enhancing capsule were significantly higher, and the total number of previous interventional treatments was significantly smaller in the VLP occurrence group than in the VLP non-occurrence group (P = 0.0006, 0.0007, and 0.0003). In multivariate analysis, the maximum tumor diameter, the presence of the enhancing capsule, and the total number of previous interventional treatments were significantly associated with the occurrence of VLP (P = 0.0048, 0.0093, and 0.047).

Conclusion

Our study confirmed that the reported risk factor, the maximum tumor diameter, and the enhancing capsule were significantly related to the occurrence of VLP in DEB-TACE. Further, the occurrence of VLP might be carefully considered when the number of previous interventional treatments is small.

Exploring the efficacy and safety of drug-eluting beads transarterial chemoembolization in pancreatic cancer liver metastasis

OBJECTIVES

Drug-eluting beads transarterial chemoembolization (DEB-TACE) has shown promise as a treatment modality for primary liver cancer and colorectal cancer liver metastasis. However, its role in pancreatic cancer liver metastasis (PCLM) remains uncertain. This study aimed to investigate the efficacy and safety of DEB-TACE in PCLM patients.

METHODS

A retrospective study included 10 PCLM patients who underwent DEB-TACE using CalliSpheres® microspheres as the chemoembolization material. Treatment response, survival outcomes, adverse events, and liver function indexes were comprehensively assessed.

RESULTS

Among the patients, complete response, partial response, stable disease, and progressive disease rates were 0.0%, 40.0%, 30.0%, and 30.0%, respectively. The objective response rate was 40.0%, and the disease-control rate was 70.0%. The median progression-free survival (PFS) was 12.0 months (95% CI: 0.0-26.7), with a 1-year PFS rate of 48.0%. The median overall survival (OS) was 18.0 months (95% CI: 6.0-30.0), with a 1-year OS rate of 80.0%. Additionally, no significant differences were observed in any of the liver function indexes, including alanine aminotransferase, aspartate aminotransferase, gamma-glutamyl transpeptidase, etc., between pre- and posttreatment evaluations. Adverse events included pain, grade 1-2 vomiting, fever, and transient liver dysfunction.

CONCLUSIONS

DEB-TACE demonstrates a promising treatment response, favorable survival profile, and satisfactory safety in PCLM patients.

ADVANCES IN KNOWLEDGE

This study adds to the current research by providing novel evidence on the efficacy, safety, and favorable survival outcomes of DEB-TACE in treating PCLM, highlighting its potential as an effective therapeutic option in this specific population.

In Vitro Drug Loading, Releasing Profiles, and In Vivo Embolic Efficacy and Safety Evaluation of a Novel Drug-Eluting Microsphere (CalliSpheres)

Background: To investigate morphology, physical property, loadability, stability, and release profiles of a novel drug-eluting microsphere, CalliSpheres, in vitro and to explore its embolic efficacy and safety in vivo. Materials and Methods: CalliSpheres (50-150 μm, 100-300 μm, and 300-500 μm) and doxorubicin in different amounts (20, 40, 80, and 100 mg) and concentrations (5 and 10 mg/mL) were prepared for experiments. Dynamic light scattering and an Agilent 1260 high-performance liquid chromatography system were used to quantify bead diameters and the efficiency of drug loading and release, respectively. Twelve New Zealand rabbits were treated with catheter-aided hepatic embolization using CalliSpheres. Results: CalliSpheres displayed a red color after loading with doxorubicin, and the mean diameters decreased by 20.7-25.8%. Almost 100% of the drug was incorporated with CalliSpheres in different sizes immersed with doxorubicin 20 mg, while loading efficiency ranged from 75.8% to 100.0% with doxorubicin at 40, 80, and 100 mg dependent on CalliSpheres sizes (smaller sizes, higher loading efficiency). Elevated loading efficiency was observed at higher concentration of doxorubicin solutions. Regarding release profiles, doxorubicin was released from CalliSpheres quickly at the very beginning, and doxorubicin release percentage was increased in the 50-150 μm group (39.2% ± 1.2%) compared with the 100-300 μm group (31.3% ± 1.3%) and 300-500 μm group (31.7% ± 2.5%). Digital subtraction angiography, computed tomography, and histopathologic emanation results proved in vivo safety and embolic efficacy of CalliSpheres. Conclusions: CalliSpheres present with good physical characteristics and satisfactory loading and releasing profiles in vitro and are well tolerated and efficient in embolization in vivo.

Loadability and Releasing Profiles In Vitro and Pharmacokinetics In Vivo of Vinorelbine and Raltitrexed by CalliSpheres Beads

Background: This study investigated the loadability and releasing profiles of vinorelbine and raltitrexed from CalliSpheres® Beads (CB) in vitro, and further explored the pharmacokinetic features of vinorelbine and raltitrexed eluting CB in vivo. Materials and Methods: Ten milligrams vinorelbine and 0.2 mg raltitrexed were mixed with 0.15 g CB at two sizes (100-300 and 300-500 μm) for 24 h, respectively, to measure the loadability. Then vinorelbine/raltitrexed loading CBs were placed in 20% phosphate-buffered saline for 24 h to measure the release profiles. Transcatheter arterial chemoembolization (TACE) with 1 mg vinorelbine eluting CBs (two sizes respectively) and transcatheter arterial hepatic infusion (TAI) with 1 mg vinorelbine were performed in 9 rabbits (3 rabbits in each group). The above experiments were repeated with 0.2 mg raltitrexed. Results: Vinorelbine loading efficiency quickly reached 90% within 10 min with maximum loadability >90% by CB with both two sizes, and vinorelbine release rate gradually increased to ∼100% within 1 h. Raltitrexed loading efficiency gradually increased to >40% within 15 min, then slowly increased to >60% within 24 h, with maximum loadability <70% by CB with both sizes, and raltitrexed release rate gradually increased to >90% within 1 h. Besides, vinorelbine/raltitrexed eluting CB showed greatly decreased maximum serum concentration (Cmax) of the drug compared with TAI in rabbits with similar area under the curve (0-t), mean residence time (0-t), and half-time (T1/2). Conclusion: CB exhibits good loadability and an acceptable releasing profile for eluting vinorelbine and raltitrexed, and shows lower Cmax and numerically stable concentration than TAI.

Assessment of Irinotecan Loading and Releasing Profiles of a Novel Drug-Eluting Microsphere (CalliSpheres) In Vitro

Background: This study investigated irinotecan loading efficiency and release profiles of CalliSpheres in vitro. Materials and Methods: CalliSpheres with size of 50-150, 100-300, and 300-500 μm and irinotecan at different amounts (20, 40, 80, and 100 mg) and concentrations (5 and 10 mg/mL) were prepared for experiments. Dynamic light scattering and Agilent 1260 high-performance liquid chromatography system were used to quantify bead diameters and the efficiency of irinotecan loading and releasing properties, respectively. Results: The diameters of CalliSpheres with all sizes were reduced after being loaded with irinotecan compared with unloaded ones with shrinkage rate ranging from 8.5% to 16.2%. Above 80% irinotecan was incorporated with CalliSpheres with all sizes when being loaded with irinotecan 20, 40, and 80 mg, while loading efficiencies were 70%-80% when being loaded with irinotecan 100 mg. Besides, elevated loading efficiency was observed at a higher concentration of irinotecan solutions (10 mg/mL) compared with a lower concentration (5 mg/mL) for CalliSpheres with all sizes. As to release profiles, irinotecan was released from CalliSpheres very quickly, and irinotecan release rate was elevated in CalliSpheres with smaller size than CalliSpheres with larger size within the first 12 h, whereas it was similar among CalliSpheres with different sizes at 24 and 48 h with maximum release rate ∼100%. In addition, fetal bovine serum seemed to have an effect on the accelerating irinotecan release. Conclusion: CalliSpheres exhibits good physical characteristics, satisfied irinotecan loading efficiency, and acceptable releasing profiles.

Efficacy and safety of CalliSpheres® microspheres drug-eluting beads transarterial chemoembolization in GCLM combined trans-arterial infusion therapy for treating primary focus of gastric cancer: a multi-center retrospective study

BACKGROUND

The purpose of this study was to observe the safety and efficacy of CalliSpheres microspheres drug-eluting beads (DEB) transhepatic arterial chemoembolization (CSM-TACE) for liver metastasis of gastric cancer (GCLM) combined with trans-arterial infusion therapy (TAIT) as the primary focus of gastric cancer.

RESEARCH DESIGN AND METHODS

Unresectable advanced GCLM patients were collected for retrospective analysis. Patients who progressed after chemotherapy or could not receive systematic chemotherapy were selected. CSM-TACE was used for GCLM treatment and oxaliplatin for TAIT of primary focus of gastric cancer. Adverse reactions, tumor reactions, survival rate, and survival time during treatment were recorded, and prognostic factors were analyzed.

RESULTS

Forty-three patients from four oncology centers met inclusion criteria and were enrolled. CSM-TACE averaged (1.51 ± 0.51) times and TAIT averaged (4.58 ± 1.65) times. The follow-up time was 2.5-49 months, and the 6-month, 1-year, and 2-year survival rates were 86.0%, 72.1%, and 41.9%, respectively, with a median overall survival of 11.5 months. The adverse reactions during treatment were grade 1-3. The hazard ratio (HR) of combination therapy was 0.51 (P = 0.040), and the HR of TAIT frequency was 0.34 (P = 0.002), which were independent protective factors affecting prognosis.

CONCLUSIONS

CSM-TAC for GCLM combined with TAIT for primary focus of gastric cancer is safe and efficacious, which is worthy of clinical promotion and application.

Treatment efficacy and safety of drug-eluting beads transarterial chemoembolization versus conventional transarterial chemoembolization in hepatocellular carcinoma patients with arterioportal fistula

This study aimed to compare the treatment efficacy and tolerance between drug-eluting beads transarterial chemoembolization (DEB-TACE) and conventional transarterial chemoembolization (cTACE) in hepatocellular carcinoma (HCC) patients with arterioportal fistula (APF). A total of 44 HCC patients with APF scheduled for DEB-TACE (N = 24, as DEB-TACE group) or cTACE (N = 20, as cTACE group) were recruited. Treatment response, hepatic function, and adverse events were assessed or recorded. Besides, progression-free survival (PFS) and overall survival (OS) were calculated. Total treatment response was better in the DEB-TACE group compared with the cTACE group (P = .012). Meanwhile, the objective response rate (87.5% versus 60.0%) was higher (P = .013), while the disease control rate (95.8% versus 85.0%) was similar in the DEB-TACE group compared to the cTACE group (P = .213). Besides, PFS (mean value: 12.2 (95%CI: 9.9-14.6) months versus 7.8 (95%CI: 5.6-10.0) months) (P = .037), but not OS (mean value: 20.0 (95%CI: 18.1-21.9) months versus. 18.6 (95%CI: 15.4-21.8) months) (P = .341) was prolonged in DEB-TACE group compared with cTACE group. Regarding the safety, Child-Pugh stage, albumin level, and bilirubin level after treatment were all similar between the DEB-TACE group and cTACE group (all P > .05); moreover, no difference was found in the occurrence of adverse events during or after treatment between the two groups (all P > .05). Moreover, subsequent analyses found that embolic materials for APF (microspheres) in the DEB-TACE group did not affect the treatment efficacy (all P > .05). DEB-TACE promotes treatment response and PFS compared with cTACE and shows good safety in HCC patients with APF.

Efficacy of TACE+Radiofrequency Ablation+Sorafenib in the Treatment of Patients with Recurrent Liver Cancer and Construction of Prediction Model

Objective

This study is aimed at exploring the efficacy of transarterial chemotherapy embolization (TACE)+radiofrequency ablation+sorafenib in the treatment of patients with recurrent liver cancer and at constructing its prediction model.

Methods

A total of 60 patients with recurrent liver cancer treated in our hospital from March 2020 to March 2022 were enrolled and divided into two groups according to treatment methods, with 30 patients in each group. Group A adopted TACE+radiofrequency ablation+sorafenib therapy while group B adopted TACE+radiofrequency ablation therapy. Clinical efficacy, complications, and adverse reactions of the two groups were observed. A total of 30 patients with nonrecurrent liver cancer in the same period were enrolled. 60 patients with recurrent liver cancer and 30 patients with nonrecurrent liver cancer were taken as the recurrence group and the nonrecurrence group, respectively. The baseline data and clinical data of the patients were queried by the Hospital Information System. The data included age, gender, Child-Pugh grade, HBV/HCV infection, portal vein tumor thrombus, degree of differentiation, vascular invasion, serum alpha fetal protein (AFP) level, number of tumors, maximum diameter of tumors, and number of nodules. The logistic regression analysis was used to analyze the independent risk factors for liver cancer recurrence. The Hosmer-Lemeshow test was used to analyze the degree of fitting between the prediction model and the standard curve. The ROC curve was used to analyze the predictive value of the model for liver cancer recurrence.

Results

The objective effective rate and disease control rate in group A (33.33% and 70.00%) were higher than those in group B (10.00% and 43.33%), and the differences were statistically significant (both P < 0.05). There were no significant differences in the incidence of complications such as embolism syndrome, hand and foot skin reaction, gastrointestinal reaction, hypertension, diaphragmatic injury and bleeding, and biliary leakage and fever between the two groups (all P > 0.05). The proportions of patients in the recurrence group with portal vein tumor thrombus (PVTT), medium and high degree of differentiation, combined with vascular invasion, serum AFP level ≥ 400 ng/dL, multiple tumors, maximum tumor diameter ≥ 5 cm, combined with cirrhosis, and polynodules were all higher than those in the nonrecurrence group; the differences were statistically significant (all P < 0.05). Complication of PVTT, the degree of medium and high differentiation, and the maximum tumor diameter ≥ 5 cm were independent risk factors for recurrence of liver cancer (all P < 0.05). The prediction model of liver cancer recurrence was obtained by multiple regression analysis, P = 1/[1 + e -(-5.441 + 6.154∗PVTT + 3.475∗differentiateddegree + 3.001∗maximumdiameteroftumor)]. The Hosmer-Lemeshow test showed that χ 2 = 1.558 (P = 0.992). According to the ROC curve analysis, the AUC, SE, and 95% CI value of the prediction model for liver cancer recurrence were 0.977, 0.012, and 0.953-1.000, respectively.

Conclusion

TACE+radiofrequency ablation+sorafenib is effective in the treatment of recurrent liver cancer, and the prediction model established based on the risk factor has high predictive value for patients with recurrent liver cancer.

Early changes in peripheral blood cytokine levels after the treatment of metastatic hepatic carcinoma with CalliSpheres microspheres drug-eluting beads transcatheter arterial chemoembolization

Objective

To observe the early changes in peripheral blood cytokine levels after treatment of metastatic hepatic carcinoma (MHC) with CalliSpheres microspheres drug-eluting beads (DEB) transcatheter arterial chemoembolization (CSM-TACE).

Methods

Twenty-eight patients with refractory MHC who underwent CSM-TACE were selected prospectively, and 5mL of peripheral blood was collected before CSM-TACE and on the 2nd and 5th day after CSM-TACE. Flow cytometry was used to detect immunological indicators. The early changes in levels of peripheral blood cell inflammatory factors Th1 (interleukin 2 (IL-2), tumor necrosis factor-α (TNF-a), interferon (IFN-r)), Th2 (IL-4, IL-6, IL-10), and Th17 (IL-17A) were observed after CSM-TACE, as well as the ratio of CD4+/CD8+.

Results

All the 28 patients underwent CSM-TACE successfully. CT at 4 days after CSM-TACE showed clear outline low-density changes in liver tumors, and honeycomb necrosis was observed in the tumors in some cases. After CSM-TACE, the IL-6 and IL-10 levels were increased and then decreased again. After CSM-TACE, IL-2 showed a trend of transient increase and then decreased again, and the TNF-a level decreased temporarily, and then decreased. After CSM-TACE, the IFN-r level showed a continuous and slowly increasing trend. The IL-17 level showed a continuous downward trend, and the CD4+/CD8+ ratio showed a gradual and continuous upward trend, and there was a negative correlation between them.

Conclusions

There are complex dynamic changes in TH1/Th2 in the early stage of CSM-TACE, and the acute inflammatory response and the enhancement of the body’s immune anti-tumor response coexist.

Treatment of unresectable intrahepatic cholangiocarcinoma using transarterial chemoembolisation with irinotecan-eluting beads: analysis of efficacy and safety

PURPOSE

This retrospective study evaluated the efficacy, safety, and factors affecting the prognosis of transarterial chemoembolisation with irinotecan-eluting beads with CalliSpheres (DEB-TACE) for intrahepatic cholangiocarcinoma (ICC).

MATERIALS AND METHODS

We retrospectively collected data on 39 patients with unresectable ICC who received DEB-TACE therapy. We assessed the indicators of tumour response, progression-free survival (PFS), overall survival (OS), and the incidence of adverse events. PFS and OS were analysed using Kaplan-Meier curves, while Cox analysis was used to identify factors affecting the prognosis.

RESULTS

The 3-month objective response rate (ORR) and disease control rate (DCR) of the 39 patients with unresectable ICC were 35.9% and 56.4%, respectively, while the 6-month ORR and DCR were 23.0% and 40.9%, respectively. The median OS and PFS were 11.0 months and 8.0 months, respectively. Cox analysis demonstrated that combined therapy (adjuvant sorafenib after DEB-TACE) and a low cancer antigen (CA) 125 level (≤ 35 U/ml) were independent favourable prognostic factors. Transient elevation of the aminotransferase level, nausea, vomiting, abdominal pain, fever, and hyper-bilirubinaemia were common adverse events in patients with unresectable ICC treated with DEB-TACE with CalliSphere beads (CBs). Hepatic abscess was the most serious complication, observed in one patient.

CONCLUSIONS

DEB-TACE with CBs is a safe and well-tolerated therapy in patients with unresectable ICC with a low incidence of adverse events and relatively prolonged survival. Combined therapy and low CA125 are prognostic factors associated with longer survival.

Drug-eluting bead transarterial chemoembolization (TACE) exhibits superior efficacy and equal tolerance to conventional TACE in hepatocellular carcinoma patients with conventional TACE history

OBJECTIVE

Multiple conventional transarterial chemoembolization (cTACE) procedures would cause treatment resistance in hepatocellular carcinoma (HCC) patients, whether drug-eluting bead transarterial chemoembolization (DEB-TACE) would resolve this issue is a necessary topic. Thus, this study aimed to compare the efficacy and safety between DEB-TACE and cTACE in HCC patients with cTACE treatment history.

METHODS

Totally, 134 HCC patients with cTACE treatment history were retrospectively reviewed. They were categorized into DEB-TACE group (N = 70) and cTACE group (N = 64) based on the current treatment they received.

RESULTS

After 1-month treatment, DEB-TACE group exhibited an elevated objective response rate (ORR) (71.9% vs. 47.3%, P = 0.008) while similar disease control rate (DCR) (93.0% vs. 81.8%, P = 0.074) compared to cTACE group. Besides, after 3-month treatment, DEB-TACE group also displayed higher ORR (68.4% vs. 44.1%, P = 0.038) and DCR (81.6% vs. 58.8%, P = 0.034) compared to cTACE group. Furthermore, the median progression-free survival (PFS) (11.5 months vs. 6.5 months P = 0.014) and overall survival (OS) (18.5 months vs. 13.0 months, P = 0.025) were longer in DEB-TACE group compared to cTACE group. Moreover, DEB-TACE (vs. cTACE) independently correlated with prolonged PFS (P = 0.021) and OS (P = 0.017) after adjustment by multivariate Cox's regression. Besides, most of liver function indexes were similar before and after treatment between these two groups. Also, the commonly observed adverse events were pain, fever, nausea/vomiting and blood pressure elevation with similar incidence between these two groups (all P > 0.050).

CONCLUSION

DEB-TACE exhibits superiority over cTACE in HCC patients with cTACE treatment history.

Comparison of Treatment Response, Survival Profiles, as Well as Safety Profiles Between CalliSpheres® Microsphere Transarterial Chemoembolization and Conventional Transarterial Chemoembolization in Huge Hepatocellular Carcinoma

Purpose

CalliSpheres^® microspheres (CSM) are the first drug-eluting beads (DEB) developed in China. This study aimed to compare treatment response, survival, and safety profiles between DEB transarterial chemoembolization (DEB-TACE) with CSM and conventional TACE (cTACE) in huge hepatocellular carcinoma (HCC) patients.

Methods

A total of 71 patients with huge HCC who underwent DEB-TACE or cTACE were consecutively enrolled in this retrospective cohort study. Treatment response was assessed at first month (M1), third month (M3), and sixth month (M6) after TACE therapy; progression-free survival (PFS) and overall survival (OS) were evaluated; liver function indexes were recorded before TACE operation (M0), at first week (W1), M1 and M6 after TACE therapy; adverse events which occurred after TACE operation were recorded.

Results

DEB-TACE presented with higher objective response rate (60.0% vs. 29.7%, p < 0.05) and disease control rate (86.7% vs. 59.4%, p < 0.05) compared with cTACE at M3. Regarding survival profiles, PFS [median: 3.3 months (95% CI: 2.8–3.7) vs. 2.1 months (95% CI: 1.7–2.5)] as well as OS [median: 7.8 months (95% CI: 4.6–11.0) vs. 5.7 months (95% CI: 5.0–6.3)] were longer in DEB-TACE group compared with cTACE group (both p < 0.01). Multivariate Cox’s regression further illustrated that DEB-TACE vs. cTACE was an independent protective factor for PFS and OS (both p < 0.01). As for safety profiles, patients’ liver function injury was reduced in the DEB-TACE group compared with the cTACE group. The incidence of fever was lower, and CINV was less severe in the DEB-TACE group compared with the cTACE group (both p < 0.05), while no difference in occurrence of liver abscess, increase of ascites, or moderate pain between two groups was observed.

Conclusion

DEB-TACE with CSM presents with better treatment response, survival profiles, as well as safety profiles compared with cTACE in treatment for huge HCC patients.

Initial Experience of Drug-Eluting Bead-Transcatheter Arterial Chemoembolization After Lipiodol-Based Transcatheter Arterial Chemoembolization Failure for Patients with Advanced Hepatocellular Carcinoma

Purpose

To investigate the potential safety and efficacy of drug-eluting bead-transcatheter arterial chemoembolization (DEB-TACE) in treating TACE-refractory hepatocellular carcinoma (HCC).

Methods

We retrospectively evaluated the treatment outcomes of DEB-TACE for 41 HCC nodules in 30 patients who were refractory to conventional TACE (c-TACE) according to tumor response. The antitumor response was evaluated according to mRECIST criteria, and changes in alpha-fetoprotein (AFP), albumin-bilirubin score, the incidence of adverse events, and the time to disease progression were observed.

Results

The objective response rate and disease control rates were 60.98% and 95.12% at 4 weeks after DEB-TACE, 63.41% and 92.68% at 8 weeks, respectively. The median time of disease progression was 4.60 ± 0.23 months. The AFP of patients decreased continuously at 2–6 weeks after operation, and the AFP at 4 weeks was significantly lower than that at 2 weeks (P = 0.038). Adverse reactions were well tolerated, and no grade 4 adverse reactions were reported. The albumin-bilirubin score did not deteriorate within 6 weeks.

Conclusion

DEB-TACE has potential efficacy and safety after failure of c-TACE in patients with advanced liver cancer. Further studies are needed to confirm the efficacy of DEB-TACE treatment after failure of c-TACE.

CaCO3 -Encapuslated Microspheres for Enhanced Transhepatic Arterial Embolization Treatment of Hepatocellular Carcinoma

Transcatheter arterial embolization (TAE) is an extensively applied treatment method for hepatocellular carcinoma (HCC). However, the worsened tumor microenvironment (TME, e.g., reduced pH post-TAE) may result in unsatisfactory therapeutic outcome. Herein, a new kind of embolic agent, calcium carbonate encapsulated alginate microspheres (CaCO₃ -ALG MSs) are synthesized. Such CaCO₃ -ALG MSs are able to neutralize the tumor pH owing to the reaction of CaCO₃ with protons, which would not affect the overall morphology of microspheres after decomposition of CaCO₃ . TAE treatment with CaCO₃ -ALG MSs is then conducted in an orthotopic rat liver cancer model. ¹⁸ F-Fluorodeoxyglucose micropositron emission tomography/computed tomography imaging is conducted post-TAE and discovered that intra-arterial injection of CaCO₃ -ALG MSs shows obvious enhanced therapeutic outcome compared to the same treatment with bare ALG MSs or the clinically used lipiodol. Further studies including analysis of immune cells in tumors, cytokine assays, and bioinformatics analysis all verify the reverse of immunosuppressive TME toward a more immunosupportive one after TAE with CaCO₃ -ALG MSs. The research not only presents a new CaCO₃ -containing embolic agent for enhanced TAE treatment of HCC but also highlights a clinically meaningful approach to improve cancer treatment via tumor pH neutralization.

Assessment of efficacy and safety by CalliSpheres versus HepaSpheres for drug-eluting bead transarterial chemoembolization in unresectable large hepatocellular carcinoma patients

This study aimed to compare efficacy and safety of HepaSpheres and CalliSpheres in unresectable large hepatocellular carcinoma (HCC) patients. One hundred and twenty-seven unresectable large HCC patients receiving drug-eluting bead transarterial chemoembolization (DEB-TACE) treatment with CalliSpheres or HepaSpheres microspheres were analyzed. Treatment response, Karnofsky performance status (KPS) score, adverse events, main liver function indexes, time to progression (TTP), and overall survival (OS) were analyzed. Objective response rate (82.7% vs. 63.8%, p=.030) and disease control rate (100.0% vs. 91.5%, p=.030) were increased in CalliSpheres group compared to HepaSpheres group at 1 month after treatment, while no difference was found between the two groups regarding treatment response at 3 or 6 months post treatment (all p>.05). The KPS score at 1, 3, and 6 months was similar between the two groups (all p>.05). As for the liver function, the ALT, AST, ALB, and TBIL levels at 7 and 30 days were of no difference between the two groups (all p>.05). In addition, the adverse events including nausea/vomiting, pain, fever, myelosuppression, biloma, and abscess were of no difference between the two groups, either (all p>.05). In terms of survival profile, there was no difference regarding TTP (6.3 months (95%CI: 5.9-6.6 months) vs. 6.0 months (95%CI: 5.6-6.4 months), p=.082) or OS (23.0 months (95%CI: 20.1-25.9 months) vs. 22.0 months (95%CI: 20.2-23.8 months), p=.571) between the two groups. In conclusion, CalliSpheres seems to be superior in short-term efficacy and equal in long-term efficacy as well as safety compared to HepaSpheres for DEB-TACE treatment in unresectable large HCC patients.

Arsenic trioxide-loaded CalliSpheres: In vitro study of drug release and antitumor activity, and in vivo study of pharmacokinetics, treatment efficacy and safety in liver cancer

The aim of the present study was to investigate the arsenic trioxide (ATO) loading/releasing efficiency of CalliSphere beads (CBs), as well as the in vitro anticancer activity, in vivo pharmacokinetics, treatment efficacy and safety of ATO-eluting CBs in liver cancer. The ATO loading and releasing efficiencies in CBs were evaluated. Furthermore, cell viability, invasion, apoptosis, VEGF expression and MMP9 expression were determined in liver cancer cells treated with ATO-eluting CBs or ATO solution. Rabbit liver models were established and underwent TACE with ATO-eluting CBs or ATO/lipiodol emulsion. Subsequently, their ATO pharmacokinetics were determined and macroscopic/microscopic examinations were conducted. In vitro, CB-loaded ATO increased during 40 min with an optimal loading efficiency of 23.0±2.5%, and released ATO rapidly within the first 30 min (31.40±10.0%) then slowed down within the latter 48 h (47.20±4.70%). ATO-eluting CBs exhibited decreased cell viability to some extent and similar invasive cell count, apoptosis rate, VEGF and MMP9 levels compared with ATO solution at various concentrations and time-points. In vivo, ATO concentration was lower in plasma, but higher in tumor tissues, and necrosis was more complete in tumor tissue while milder in normal liver parenchyma after rabbit liver was embolized with ATO-eluting CBs compared with ATO/lipiodol emulsion. ATO-eluting CBs may be a novel and promising therapeutic option in treating liver cancer.

Chinese expert consensus on technical recommendations for the standard operation of drug-eluting beads for transvascular embolization

Liver cancer is among the 10 most common tumors globally. In China, liver cancer ranks 4^th for prevalence and 3^rd for mortality among all malignant tumors. With respect to the treatment of primary liver cancer, there are a number of therapies currently available, including surgical resection, liver transplantation, ablation, transarterial chemoembolization (TACE), systemic chemotherapy, radiation therapy, targeted drug therapy and immunotherapy. Clinical practice and research have shown that, compared with conventional TACE (cTACE), drug-eluting bead TACE (DEB-TACE) can achieve a higher response rate and longer survival time in patients with primary liver cancer. Compared with that of cTACE, DEB-TACE has more favorable basic conditions for achieving uniformity, which could facilitate the standardization of operation techniques. China is the country with the highest incidence of primary liver cancer, accounting for more than 50% of the global patients, and its etiology and epidemiology in Chinese patients differ from those in Europeans and Americans. Therefore, experts in China have drafted these technical recommendations for the standard operation of drug-eluting beads for the treatment of liver cancer on the basis of accumulated abundant clinical experience and evidence-based medical data.

Drug-eluting Bead-Transcatheter Arterial Chemoembolization for Advanced Hepatocellular Carcinoma Refractory to Conventional Lipiodol-based Transcatheter Arterial Chemoembolization

Purpose

To evaluate the potential of drug-eluting bead (DEB)-transcatheter arterial chemoembolization (TACE) as a treatment option for patients with refractory to conventional lipiodol-based TACE (c-TACE) especially with decreased liver function.

Patients and Methods

We retrospectively evaluated the treatment results of DEB-TACE for 89 HCC nodules in 27 patients with c-TACE refractory according to liver function.

Results

Although overall survival was significantly better in Child–Pugh A patients than in Child–Pugh B patients (median survival time, MST: 561 vs 347 days, p=0.031), progression-free survival was almost similar in both patients between Child–Pugh A and B (MST: 79 vs 87 days, p=0.534). Regarding antitumor response, the objective response rate (ORR) and disease-control rate (DCR) were 5.3/12.5% and 52.7/87.5% in Child–Pugh A/B, respectively. In each 89 HCC nodules, ORR and DCR were almost similar between Child–Pugh A and B (ORR, 20.3 vs 13.3%; DCR, 77.0 vs 73.3%, respectively). Adverse events of DEB-TACE were well-tolerated, and liver function was reserved during DEB-TACE procedures.

Conclusion

DEB-TACE could be a therapeutic option for advanced HCC patients with c-TACE refractory and decreased liver function.

Chemoembolization of liver cancer with doxorubicin-loaded CalliSpheres microspheres: plasma pharmacokinetics, intratumoral drug concentration, and tumor necrosis in a rabbit model

The purpose of this work was to investigate the plasma pharmacokinetics, intratumoral drug concentration, and tumor necrosis after transarterial chemoembolization (TACE) with doxorubicin-loaded CalliSpheres microspheres (CSMs). Sixty rabbits with liver VX2 tumors were assigned into five groups of 12 rabbits each, which received 4 mg of doxorubicin via intravenous injection (IV group), hepatic arterial infusion (IA group), conventional TACE (cTACE group), CSM-TACE (CSM low-dose group), and 8 mg of doxorubicin via CSM-TACE (CSM high-dose group), respectively. Doxorubicin concentrations in plasma, tumor, and adjacent hepatic parenchyma were measured at various timepoints after treatment, and tumor necrosis percentage and liver enzymes were also assessed. The peak plasma concentration of doxorubicin was significantly lower in the three TACE groups compared to IV and IA group (P < 0.05), while doxorubicin concentrations in tumor and adjacent hepatic parenchyma were higher in the two CSM groups compared with IV, IA, and cTACE groups at 3 days and 7 days after treatment (P < 0.05). The percentages of tumor necrosis at 3 and 7 days after treatment were significantly higher in three TACE groups (all higher than 50%) compared with IV group and IA group (both lower than 25%) (P < 0.05), and the highest tumor necrosis percentage was achieved in CSM high-dose group. The three TACE groups showed transient increases in transaminases levels after treatment, in which the peak transaminases levels were significantly lower in the two CSM groups than those in cTACE group (P < 0.05). CSM achieves an effective delivery of doxorubicin into liver cancer. High-dose doxorubicin improves tumoricidal capacity while not impairing the safety of the doxorubicin-loaded CSM.

Polymer microparticles with a cavity designed for transarterial chemo-embolization with crystalline drug formulations

Transarterial chemo-embolization with drug-eluting embolic beads (DEB-TACE) is still evolving. Recent developments include the introduction of radiopaque (X-ray imageable) drug-eluting particles. Here, we report on conceptually different radiopaque polymeric drug-eluting embolic particles, which are (i), cross-linked poly(methacrylates); (ii), radiopaque; (iii), microporous. Furthermore, the particles are not perfectly spherical: they have a large indentation in the sense that they are either a spherical/cup-shaped or ellipsoid/mouth-shaped. The micropores and the large indentation can confer useful features upon the particles, since they can be filled with a crystalline lipophilic chemotherapeutic drug. It is important, in this respect that (i), many potent chemotherapeutics are lipophilic and crystalline; (ii), available drug-eluting beads (DEBs) have the limitation that they can only be used in combination with water-soluble chemotherapeutic agents. Cup- and mouth-shaped particles were obtained in a Cu(0) catalyzed free-radical polymerization reaction. The microparticles could be charged with crystalline drug, in such a manner that the crystals reside in both the micropores and the large cavity, and in quantities that would be required for effective local chemotherapy. The antifungal drug voriconazole, lipophilic, and crystalline, was used to demonstrate this. We believe that the ability of the microporous/cavitated DEBs to carry lipophilic chemotherapeutic drugs is especially important. DEB-TACE is likely to become a cornerstone method of interventional oncology in the years ahead, and the new embolic particles described herein hold the promise of becoming scope widening for the technique.

Predictive model for acute abdominal pain after transarterial chemoembolization for liver cancer

BACKGROUND

Transarterial chemoembolization (TACE) is the first-line treatment for patients with unresectable liver cancer; however, TACE is associated with postembolization pain.

AIM

To analyze the risk factors for acute abdominal pain after TACE and establish a predictive model for postembolization pain.

METHODS

From January 2018 to September 2018, all patients with liver cancer who underwent TACE at our hospital were included. General characteristics; clinical, imaging, and procedural data; and postembolization pain were analyzed. Postembolization pain was defined as acute moderate-to-severe abdominal pain within 24 h after TACE. Logistic regression and a classification and regression tree were used to develop a predictive model. Receiver operating characteristic curve analysis was used to examine the efficacy of the predictive model.

RESULTS

We analyzed 522 patients who underwent a total of 582 TACE procedures. Ninety-seven (16.70%) episodes of severe pain occurred. A predictive model built based on the dataset from classification and regression tree analysis identified known invasion of blood vessels as the strongest predictor of subsequent performance, followed by history of TACE, method of TACE, and history of abdominal pain after TACE. The area under the receiver operating characteristic curve was 0.736 [95% confidence interval (CI): 0.682-0.789], the sensitivity was 73.2%, the specificity was 65.6%, and the negative predictive value was 92.4%. Logistic regression produced similar results by identifying age [odds ratio (OR) = 0.971; 95%CI: 0.951-0.992; P = 0.007), history of TACE (OR = 0.378; 95%CI: 0.189-0.757; P = 0.007), history of abdominal pain after TACE (OR = 6.288; 95%CI: 2.963-13.342; P < 0.001), tumor size (OR = 1.978; 95%CI: 1.175-3.330; P = 0.01), multiple tumors (OR = 2.164; 95%CI: 1.243-3.769; P = 0.006), invasion of blood vessels (OR = 1.756; 95%CI: 1.045-2.950; P = 0.034), and TACE with drug-eluting beads (DEB-TACE) (OR = 2.05; 95%CI: 1.260-3.334; P = 0.004) as independent predictive factors for postembolization pain.

CONCLUSION

Blood vessel invasion, TACE history, TACE with drug-eluting beads, and history of abdominal pain after TACE are predictors of acute moderate-to-severe pain. The predictive model may help medical staff to manage pain.

Clinical effect of bronchial arterial infusion chemotherapy and CalliSpheres drug-eluting beads in patients with stage II-IV lung cancer: A prospective cohort study

BACKGROUND

CalliSpheres are drug-eluting beads used for tumor artery embolization, with clinical benefits in a number of cancer types. The aim of the study was to examine the clinical benefits and complications of patients with stage II-IV lung cancer treated with CalliSpheres drug-eluting beads for embolization versus conventional vascular interventional treatment.

METHODS

This was a prospective cohort study conducted from August 2018 to May 2019. The patients were grouped according to traditional bronchial arterial infusion chemotherapy (infusion group) or bronchial arterial chemoembolization with CalliSpheres drug-eluting beads loaded with adriamycin (CallisSphere group). Short-term effects, serum tumor markers, and adverse reactions during follow-up were compared between the two groups.

RESULTS

There were 60 participants enrolled into the study with 30 in each group including 54 men and six women, 42-78 years of age. In the CalliSphere group, compared with the infusion group, the disease control rate was 93.3% versus 73.3% (P = 0.080) and the objective remission rate (ORR) was 86.7% versus 60.0% (P = 0.039); the three- and six-month progression-free survival (PFS) and six-month overall survival (OS) were better in the CalliSphere group (three-month PFS: 96.7% vs. 73.3%, P = 0.026; six-month PFS: 87.5% vs. 57.1%, P = 0.045; six-month OS: 87.5% vs. 52.7%, P = 0.024); after treatment, the tumor markers in the CalliSphere group were lower (CEA: P < 0.001; CYFRA21-1: P = 0.014). There were no differences in adverse reactions between the two groups.

CONCLUSIONS

The clinical effect of bronchial arterial chemoembolization with drug-eluting beads on lung cancer is probably significant and could improve the short-term response, PFS, and OS in patients with stage IIIV lung cancer, without increasing severe adverse reactions.

KEY POINTS

SIGNIFICANT FINDINGS OF THE STUDY: The clinical effect of bronchial arterial chemoembolization with drug-eluting beads on lung cancer is probably significant and could improve the short-term response, PFS, and OS in patients with stage II-IV lung cancer, without increasing severe adverse reactions.

WHAT THIS STUDY ADDS

The ORR, PFS, OS was better in the CalliSphere group than that of infusion group; CEA and CYFRA21-1 were significant lower in CalliSphere group.

Drug-eluting beads transarterial chemoembolization with CalliSpheres microspheres for treatment of unresectable intrahepatic cholangiocarcinoma

Objective: This study aimed to evaluate the efficacy and safety of doxorubicin-loaded drug-eluting beads transarterial chemoembolization (DEB-TACE) with CalliSpheres microspheres (CSM) in treating unresectable intrahepatic cholangiocarcinoma (ICC).

Methods: 88 unresectable ICC patients who received DEB-TACE treatment with CSM were retrospectively enrolled in this study. Information about treatment response, survival and adverse events were collected. The Kaplan-Meier curve was used to evaluate progression-free survival (PFS) and overall survival (OS), and factors affecting OS were determined by Cox's proportional hazards regression model.

Results: Tumor response of the whole sample of 88 patients was partial response (PR) in 58 (65.9%) patients, stable disease (SD) in 19 (21.6%) and progressive disease (PD) in 11 (12.5%) at one month after therapy, with no complete responses (CR). The median PFS and OS were 3.0 months and 9.0 months respectively. Cox's proportional hazards regression analysis disclosed that subsequent treatment was an independent favorable prognostic factor, while cholangiectasis, extensive intrahepatic tumor burden and extrahepatic metastasis were the three prognostic factors associated with poor survival in ICC patients. Besides, common adverse events included nausea/vomiting, abdominal pain and transient elevation of liver transaminase in patients treated by DEB-TACE with CSM.

Conclusion: DEB-TACE with CSM is safe and well-tolerated for unresectable ICC patients, with a low complication rate and a relative benefit in terms of survival. Subsequent treatments including systemic/loco-regional treatments is an independent favorable prognostic factor, but cholangiectasis, extensive intrahepatic tumor burden and extrahepatic metastases are the three prognostic factors associated with poor survival.

An investigation of efficacy, safety, and prognostic factors of drug-eluting beads-transarterial chemoembolization operation with CalliSpheres® Microspheres in treating Chinese hepatocellular carcinoma patients

BACKGROUND

We aimed to investigate treatment response, survival profiles, safety profiles, and predictive factors of drug-eluting beads-transarterial chemoembolization (DEB-TACE) with CalliSpheres^® Microspheres (CSM) in treating Chinese hepatocellular carcinoma (HCC) patients.

METHODS

A total of 66 HCC patients about to receive DEB-TACE with CSM therapy were consecutively enrolled in this prospective cohort study. Treatment response was recorded. Besides, progression-free survival (PFS) and overall survival (OS) were also recorded. All adverse events including pain, nausea, vomiting, fever, and liver function damage were recorded during hospitalization.

RESULTS

37.9% of patients achieved complete response (CR) and 81.8% of patients achieved an objective response rate (ORR). For survival, mean PFS and OS were 13.7 (11.7-15.8) months and 18.8 (95% CI: 16.3-21.2) months, respectively. Multivariate logistic regression analysis revealed that a number of nodules ≥2 was an independent factor for worse CR; moreover, multivariate Cox's regression analysis disclosed that largest sample size ≥5 cm was an independent factor for shorter PFS, and Child-Pugh B and BCLC stage B/C were independent predictive factors for unfavorable OS. As to AEs, numbers of patients suffered liver function damage, pain, nausea, vomiting, and fever were 29 (43.9%), 27 (40.9%), 22 (33.3%), 13 (19.7%), and 37 (56.1%), respectively.

CONCLUSION

Drug-eluting beads-transarterial chemoembolization with CSM is an effective and tolerated treatment for Chinese HCC patients, and number of nodules ≥2, largest nodule size ≥5 cm, Child-Pugh stage B, and BCLC stage B/C correlates with unfavorable prognosis.