Clinical efficacy of liver resection combined with adjuvant microwave coagulation for patients with hepatocellular carcinoma: a promising approach to minimize recurrence?
Clinical efficacy of liver resection combined with adjuvant microwave coagulation for patients with hepatocellular carcinoma: a promising approach to minimize recurrence?
Project description:BackgroundLiver resection has been widely applied as a curative measure in the treatment of hepatocellular carcinoma (HCC) patients. However, the high rate of postoperative recurrence observed following liver resection proposes a problem, the solution for which is yet to be well established. Microwave coagulation is a therapy that was recently proposed as an adjuvant tool. In this study, we intended to evaluate the effectiveness of microwave coagulation as an auxiliary therapeutic method for patients undergoing liver resection.MethodsA total of 236 consecutive patients classified as Barcelona Clinic Liver Cancer (BCLC) stage A who had only one tumor were enrolled in this retrospective study, regardless of tumor size. Survival analyses were performed using the Kaplan-Meier method, and the statistical differences between patients who underwent liver resection with and without adjuvant microwave coagulation were examined by the log-rank test. To investigate the prognostic factors for OS, we carried out univariate and multivariate Cox regression analyses.ResultsBased on the Kaplan-Meier curves, patients who underwent surgical resection with intraoperative adjuvant microwave coagulator had prolonged recurrence-free survival time and showed better overall survival (OS) than those who underwent surgical resection alone, with OS at 1, 3, and 5 years of 77.8%, 33.2%, 12.6% vs. 58.2%, 15.5%, 9.7%, respectively (log-rank P<0.001). The univariate and multivariate analyses demonstrated that tumor size, albumin, bilirubin, Child-Pugh score, and treatment method had significant prognostic power for both PFS and OS. According to the subgroup analyses based on the tumor size, there were significant differences in PFS and OS among overall subsets between the liver resection with adjuvant microwave coagulator and liver resection only groups.ConclusionsLiver resection combined with intraoperative adjuvant microwave coagulation had a better prognostic performance than treatment with liver resection alone. Adjuvant microwave coagulation should be suggested as an alternative treatment modality for BCLC stage A patients with a single tumor, regardless of its size.
Project description:BackgroundLiver resection (LR) and percutaneous microwave coagulation therapy (PMCT) are both considered as radical treatments for small hepatocellular carcinoma (HCC). However, it is still unclear whether to select LR or PMCT in HCC patients with different degrees of liver cirrhosis. The purpose of this study was to compare the efficacy of LR and PMCT in the treatment of solitary and small HCC accompanied with different degrees of liver cirrhosis.MethodsIn this study, 230 patients with solitary HCC lesions ≤ 3 cm and Child-Pugh A liver function were retrospectively reviewed. Among these patients, 122 patients underwent LR, and 108 received PMCT. The short- and long-term outcomes were compared between these two procedures. Severity of liver cirrhosis was evaluated by using clinical scoring system (CSS) as previously published. Subgroup analysis based on CSS was performed to evaluate the effect of severity of liver cirrhosis on surgical outcomes after LR and PMCT.ResultsThere was no mortality within 90 days in both groups. Major complications were significantly more frequent in the LR group than in the PMCT group (18.8% vs. 4.6%, p<0.001). However, LR provided better surgical outcomes than PMCT. The 5-year overall survival (OS) rates for the LR and PMCT groups were 65.2% and 42%, respectively (p=0.006), and the corresponding disease-free survival (DFS) rates were 51.7% and 31.5%, respectively (p=0.004). Nevertheless, subgroup analysis showed that PMCT provided long-term outcomes that were similar to LR and lower surgical complications in HCC patients with CSS score≥4.ConclusionsLR may provide better OS and DFS rates than PMCT for patients with solitary HCC lesions ≤ 3 cm and Child-Pugh A liver function irrespective of liver cirrhosis. PMCT should be viewed as the optimal treatment for solitary and small HCC with severe cirrhosis.
Project description:BACKGROUND/AIMS: Our policy for the surgical treatment of hepatocellular carcinoma (HCC) has been to minimize the extent of liver resection using a microwave tissue coagulator (MTC) and to not perform Pringle's maneuver for the prevention of ischemic injury to the liver routinely. We verify the safety of liver resection using MTC in HCC patients with poor liver functional reserve, and clarify the long-term outcome of HCC patients who underwent curative resection using MTC. METHODOLOGY: One hundred sixty-eight patients who underwent curative resection using MTC between 1992 and 2001 were divided into two groups according each patient's score in the Indocyanin Green Retension 15 Test (ICG-R15 test). The high (ICG-R15 values>20) and low ICG-R15 groups (ICG-R15 values<20) included 100 and 68 HCC patients, respectively. Clinical characteristics of each group were evaluated, and operative mortality and morbidity, as well as overall and disease-free survival rates, were compared between the two groups to determine risk factors for overall and disease-free survival. RESULTS: Although there were significant differences in liver function-related parameters between the low and high ICG-R15 groups, no differences in surgical or tumor factors were found. No patients in this study developed post-operative liver failure, and there was no significant difference in morbidity between the low and high ICG-R15 groups. The overall survival rate of the low ICG-R15 group was significantly longer than the high ICG-R15 group (p=0.0003). Cox's multivariate analysis showed that an ICG-R15 value less than 20 was the only significant independent factor for overall survival. Disease-free survival rates in the low ICG-R15 group were significantly longer than in the high ICG-R15 group (p=0.0007). Multivariate analysis showed that serum albumin level and number of tumors were significant independent factors for disease-free survival. CONCLUSION: The long-term outcome of HCC patients with low ICG-R15 following curative resection using MTC was acceptable. This procedure was safe even for patients with high ICG-R15.
Project description:BackgroundEarly recurrence of hepatocellular carcinoma (HCC) is a major obstacle to improving the prognosis, and no widely accepted adjuvant therapy guideline for patients post-liver resection is available. Currently, all available methods and biomarkers are insufficient to accurately predict post-operation HCC patients' risk of early recurrence and their response to adjuvant therapy.MethodsIn this study, we downloaded four gene expression datasets (GSE14520, GSE54236, GSE87630, and GSE109211) from the Gene Expression Omnibus database and identified 34 common differentially expressed genes associated with HCC dysregulation and response to adjuvant sorafenib. Then, we constructed a novel 11-messenger RNA predictive model by using ROC curves analysis, univariate Cox regression analysis, and LASSO Cox regression analysis. Furthermore, we validated the predictive values of the risk model in GSE14520 and TCGA-LIHC cohorts by using Kaplan-Meier survival analysis, multivariable Cox regression analysis, and decision curve analysis, respectively.ResultsThe risk score model could identify patients with a high risk of HCC recurrence at the early stage and could predict the response of patients to adjuvant sorafenib. Patients with a high risk score had a worse recurrence rate in training cohorts (2-year: p < 0.0001, hazard ratio (HR): 4.658, confidence interval 95% CI [2.895-7.495]; 5-year: p < 0.0001, HR: 3.251, 95% CI [2.155-4.904]) and external validation cohorts (2-year: p < 0.001, HR: 3.65, 95% CI [2.001-6.658]; 5-year: p < 0.001, HR: 3.156, 95% CI [1.78-5.596]). The AUC values of the risk score model for predicting tumor early recurrence were 0.746 and 0.618, and that of the risk score model for predicting the response to adjuvant sorafenib were 0.722 and 0.708 in the different cohort, respectively. Multivariable Cox regression analysis and decision curve analysis also showed that the risk score model was superior to and independent of other clinicopathologic characteristics. Moreover, the risk score model had excellent abilities to predict the overall survival and HCC recurrence of patients with the same tumor stage category.ConclusionsOur risk model is a reliable and superior predictive tool. With this model, we could optimize the risk stratification based on early tumor recurrence and could evaluate the response of patients to adjuvant sorafenib after liver resection.
Project description:BackgroundHigh early recurrence (ER) of hepatocellular carcinoma (HCC) after microwave ablation (MWA) represents a sign of aggressive behavior and severely worsens prognosis. The aim of this study was to estimate the outcome of HCC following MWA and develop a response algorithmic strategy based on multiparametric MRI and clinical variables.MethodsIn this retrospective study, we reviewed the records of 339 patients (mean age, 62 ± 12 years; 106 men) treated with percutaneous MWA for HCC between January 2014 and December 2017 that were evaluated by multiparametric MRI. These patients were randomly split into a development and an internal validation group (3:1). Logistic regression analysis was used to screen imaging features. Multivariate Cox regression analysis was then performed to determine predictors of ER (within 2 years) of MWA. The response algorithmic strategy to predict ER was developed and validated using these data sets. ER rates were also evaluated by Kaplan-Meier analysis.ResultsBased on logistic regression analyses, we established an image response algorithm integrating ill-defined margins, lack of capsule enhancement, pre-ablative ADC, ΔADC, and EADC to calculate recurrence scores and define the risk of ER. In a multivariate Cox regression model, the independent risk factors of ER (p < 0.05) were minimal ablative margin (MAM) (HR 0.57; 95% CI 0.35 - 0.95; p < 0.001), the recurrence score (HR: 9.25; 95% CI 4.25 - 16.56; p = 0.021), and tumor size (HR 6.21; 95% CI 1.25 - 10.82; p = 0.014). Combining MAM and tumor size, the recurrence score calculated by the response algorithmic strategy provided predictive accuracy of 93.5%, with sensitivity of 92.3% and specificity of 83.1%. Kaplan-Meier estimates of the rates of ER in the low-risk and high-risk groups were 6.8% (95% CI 4.0 - 9.6) and 30.5% (95% CI 23.6 - 37.4), respectively.ConclusionA response algorithmic strategy based on multiparametric MRI and clinical variables was useful for predicting the ER of HCC after MWA.
Project description:The current clinical classification of primary liver cancer is unable to efficiently predict the prognosis of combined hepatocellular cholangiocarcinoma (cHCC). Accurate satellite nodules (SAT) and microvascular invasion (MVI) prediction in cHCC patients is very important for treatment decision making and prognostic evaluation. The aim of this work was to explore important factors affecting the prognosis of cHCC patients after liver resection and to develop preoperative nomograms to predict SAT and MVI in cHCC patients. The nomogram was developed using the data from 148 patients who underwent liver resection for cHCC patients at our hospital between January 2006 and December 2014. Based on the results of the multivariate analysis, a nomogram integrating all significant independent factors affecting overall survival and recurrence-free survival was constructed to predict the prognosis of cHCC. Next, risk factors for SAT and MVI were evaluated with logistic regression. Blood signatures were established using the LASSO regression, and then, we combined the clinical risk factors and blood signatures of the patients to establish predictive models for SAT and MVI. The C-index of the nomogram for predicting survival was 0.685 (95% CI, 0.638 to 0.732), which was significantly higher than the C-index for other liver cancer classification systems.
Project description:BACKGROUND:Liver transplantation (LT) for recurrent hepatocellular carcinoma (HCC) following liver resection (LR) has been considered a promising strategy for improving patient's outcome. The study aimed to analyse patients from primary LR to LT for HCC and to provide additional information for decision-making in therapeutic strategies for patients with HCC. METHODS:Among 776 LTs, a retrospective analysis of patients who had undergone LT for recurrent HCC after primary LR between May 2005 and 2017 February was performed. RESULTS:During the follow-up period, the overall recurrence-free survival rates at 1, 3 and 5 years were 84.8%, 68.2% and 68.2%, and disease-specific overall-survival rates were 95.7%, 74.4% and 66.7% at 1, 3 and 5 years after LT, respectively. Beyond University of California at San Francisco (UCSF) transplantation criteria (p = 0.018, hazard ratio (HR) = 12.70), maximum tumor size ≥ 5 cm at LR (p = 0.012, HR = 7.90) and period between post-LR HCC recurrence and LT ≥ 1 year (p = 0.030, HR = 7.57) were prognostic factors of HCC recurrence after LT. Moreover, HCC recurrence after LT was the solely independent risk factor affecting overall survival of patients. CONCLUSION:Large tumor size at LR should be taken into cautious tending to HCC recurrence even after salvage LT. Importantly, LT should be considered as soon as possible preferably within 1 year whenever post-LR recurrent HCC meets transplantation criteria.
Project description:The definition of the risk of hepatocellular carcinoma (HCC) recurrence after resection represents a central issue to improve the clinical management of patients. In this study we examined the prognostic relevance of infiltrating immune cell subsets in the tumor (TIL) and in nontumorous (NT) liver (LIL), and the expression of immune-related and lineage-specific mRNAs in HCC and NT liver derived from 42 patients. The phenotype of infiltrating cells was analyzed by flow cytometry, and mRNA expression in liver tissue was examined by real-time reverse transcription (RT)-PCR. The tumor immune microenvironment was enriched in inhibitory and dysfunctional cell subsets. Enrichment in CD4+ T-cells and in particular CD4 and CD8+ memory subsets within TIL was predictive of better overall survival (OS) and time to recurrence (TTR). Increased programmed death ligand 1 (PDL1) mRNA content and higher prevalence of invariant NKT (iNKT) cells were associated with shorter OS and TTR, respectively. By combined evaluation of infiltrating cell subsets along with mRNA profiling of immune and tumor related genes, we identified the intratumoral frequency of memory T-cells and iNKT-cells as well as PDL1 expression as the best predictors of clinical outcome. HCC infiltrate is characterized by the expression of molecules with negative regulatory function that may favor tumor recurrence and poor survival.
Project description:BACKGROUND:Hepatocellular carcinoma (HCC) recurrence after liver resection depends upon the stage and histological grade of the tumor and the expression of certain biomarkers. However, it remains unclear which of these factors has the highest predictive value regarding HCC recurrence after surgical resection. METHODS:This study investigated the associations among clinicopathological characteristics, expression of biomarkers, and HCC recurrence after liver resection. Fifty-four patients having undergone liver resection for HCC were enrolled prospectively, and their data were analyzed retrospectively. Evaluated variables were clinical data, laboratory findings, modified Union for International Cancer Control (UICC) stage, vascular invasion, histological differentiation, and immunohistochemical staining for fibroblast growth factor receptor 2 (FGFR2), vascular endothelial growth factor, and tumor-necrosis-factor-related apoptosis-inducing ligand receptors 1 and 2. RESULTS:Mean patient age was 58.6 years (range, 30-71), and the mean and SD for follow-up duration were 51.2 ± 34.8 months. Cumulative 1-, 3-, and 5-year recurrence rates were 32.9%, 53.6%, and 68.1%, respectively. In univariate analysis, FGFR2 (p = 0.026) and Edmonson-Steiner grade (E-S grade) (p = 0.030) were associated with recurrence after resection in HCC patients. In multivariate analyses, increased FGFR2 expression (p = 0.017) was the only significant predictor of HCC recurrence. CONCLUSIONS:High FGFR2 expression had marginal association with poor E-S grade (p = 0.056). More intensive surveillance of HCC recurrence is warranted in HCC patients with increased FGFR2 expression.
Project description:Background: Improving surgical outcomes in hepatocellular carcinoma (HCC) patients would greatly benefit from biomarkers. Angiogenesis and inflammation are hallmarks of HCC progression and therapeutic targets. Methods: We retrospectively evaluated preoperative clinical variables and circulating (plasma) biomarkers of angiogenesis and inflammation in a cohort of HCC patients who underwent liver resection (LR) or transplantation (LT). Biomarker correlation with outcomes-freedom of liver recurrence (FLR), disease-free survival (DFS) and overall survival (OS)-was tested using univariate and multivariate Cox regression analyses. Results: Survival outcomes associated with sVEGFR1, VEGF and VEGF-C in LT patients and with IL-10 in LR patients. Moreover, in LT patients within Milan criteria, higher plasma VEGF and sVEGFR1 were associated with worse outcomes, while in those outside Milan criteria lower plasma VEGF-C associated with better outcomes. Multivariate analysis indicated that adding plasma VEGF or VEGF-C to a predictive model including Milan criteria and AFP improved prediction of DFS and OS (all p < 0.05). Conclusion: Survival outcomes after LR or LT differentially associated with angiogenic and inflammatory biomarkers. High plasma VEGF correlated with poorer prognosis within Milan criteria while low plasma VEGF-C associated with better prognosis outside Milan criteria. These candidate biomarkers should be further validated to improve patient stratification.