What is the current understanding of the role of VSIG in hepatocellular carcinoma?4 answersThe current understanding of the role of VSIG in hepatocellular carcinoma (HCC) is that VSIG family members, including TIGIT, VSIG4, and VSIG3, act as coinhibitory receptors during T-cell activation and contribute to maintaining an immune suppressive microenvironment in tumors. These VSIG proteins inhibit T-cell responses by interacting with their corresponding ligands, thus playing a role in regulating immune responses and tumor progression. The identification of VSIG family members as putative immune checkpoints in cancer immunotherapy suggests their potential as targets for combination blockade of multiple immune inhibitory pathways. Further research is needed to fully understand the specific roles of VSIG proteins in HCC and their potential as therapeutic targets in the treatment of this disease.
Polygenic risk scores for predicting hepatocellular carcinoma ?5 answersPolygenic risk scores (PRS) have shown promise in predicting hepatocellular carcinoma (HCC) risk. Several studies have developed and validated PRS for HCC using different approaches. Aaron P. Thrift et al. developed a PRS based on high-risk variants in PNPLA3-MBOAT7-TM6SF2-GCKR and found that it increased the risk of HCC in cirrhosis patients. Huang Xiaochun et al. established an inflammatory response gene-based PRS and successfully divided HCC patients into high-risk and low-risk groups. Zhi Qun Li et al. developed a five-gene risk score that could predict HCC patients' prognosis and identified promising therapeutic targets. Claire E. Thomas et al. examined the relationship between a PRS for hepatic fat content and HCC risk, finding an increased risk of HCC in the highest quartile. Hongyu Wang et al. identified a prognostic signature comprising five pyroptosis-related genes that can be used as a potential prognostic factor for HCC. These studies highlight the potential of PRS in predicting HCC risk and prognosis.
What are the most important factors in hepatocellular carcinoma prognosis?5 answersThe most important factors in hepatocellular carcinoma (HCC) prognosis include advanced tumor size, lymph node involvement, and metastasis (TNM) stage, presence of cirrhosis, high alpha-fetoprotein (AFP) levels, and high neutrophil to lymphocyte ratio (NLR) values. Imaging findings such as rim arterial phase hyperenhancement, arterial phase peritumoral hyperenhancement, hepatobiliary phase peritumoral hypointensity, non-smooth tumor margin, low apparent diffusion coefficient, and the LR-M category of the Liver Imaging-Reporting and Data System have also been associated with poor prognosis. Additionally, tumor mutational burden (TMB), neoplasm histologic grade, Child-Pugh grade, and specific gene mutations such as TP53, CTNNB1, TTN, MUC16, and ALB have been identified as influencing factors for HCC prognosis. Tumor size is positively correlated with the mortality rate of HCC, with smaller tumors (≤2 cm) associated with higher survival rates. Other prognostic factors include initial performance status, Child-Pugh score, and Barcelona Clinic Liver Cancer (BCLC) stage at the time of diagnosis.
What are the latest advances in the research of hepatocellular carcinoma?5 answersRecent advances in hepatocellular carcinoma (HCC) research include the development of experimental animal models to study the disease's pathogenesis and drug screening more effectively. Locoregional therapies, such as radiofrequency ablation, transarterial chemoembolisation, and transarterial radioembolisation, have become integral to HCC management. Oncolytic virus therapy has also shown promise in treating HCC, with researchers designing recombinant viruses that target HCC and kill tumor cells through various mechanisms. Additionally, there is ongoing research on the treatment of recurrent HCC, with novel approaches like immunotherapy and antiviral medication being explored. Prognostic models have been developed to improve the prediction of outcomes for surgically treated HCC patients, incorporating factors such as microvascular infiltration. These advances in animal models, locoregional therapies, oncolytic virus therapy, and prognostic models contribute to the ongoing progress in HCC research.
Is smoking a risk factor for liver cancer?5 answersSmoking is a risk factor for liver cancer. Multiple studies have shown an association between smoking and the development of hepatocellular carcinoma (HCC), the most common type of liver cancer. Smoking has been found to independently increase the risk of liver fibrosis and contribute to the development of HCC in patients with chronic viral hepatitis or other liver diseases. The International Agency for Research on Cancer (IARC) has classified liver cancer as a tobacco-related malignancy, further supporting the link between smoking and liver cancer. Additionally, a pooled analysis of prospective studies found that smoking is associated with an increased risk of biliary tract cancers, including extrahepatic bile duct and ampulla of Vater cancers. Therefore, smoking cessation should be encouraged, especially in individuals with traditional risk factors for liver cancer, to reduce the risk of developing this disease.
What are the current challenges in the treatment of hepatic cancer?1 answersThe current challenges in the treatment of hepatic cancer include the need for earlier diagnostic markers and alternative therapeutic approaches. Liver cancer is often diagnosed in advanced stages, leading to poor prognosis. Treatment options for advanced stages of hepatocellular carcinoma (HCC) remain limited. The 1- and 3-year survival rates for HCC are low, and the median survival is only 8 months. The pathogenesis of HCC is complex, but advances in targeted molecular therapies offer new hope. However, the success of precision oncology is limited by issues such as tumor heterogeneity and acquired resistance. Immuno-oncology has also revolutionized cancer treatment, but long-term survival benefits with immune checkpoint inhibitors are restricted to a minority of patients. The identification of predictive markers for immunotherapy response is still a challenge. Overall, improving early detection, expanding treatment options, and addressing resistance mechanisms are key challenges in the treatment of hepatic cancer.