期刊
CANCERS
卷 15, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/cancers15010050
关键词
hepatocellular cancer; cholangiocarcinoma; immunotherapy; SBRT; radiation; checkpoint; liver cancer; liver cancers; combination therapy
类别
Liver and biliary tract cancers are aggressive with limited treatment options. Combining high-dose radiation with immunotherapy shows promise for improving efficacy, but more research is needed. The combination of stereotactic body radiation therapy (SBRT) and immune checkpoint inhibitors (ICI) could be explored for advanced primary liver tumors and cholangiocarcinoma. Large-scale trials are necessary to determine the suitable patient population and assess the clinical benefit. Rating: 8/10.
Simple Summary Cancers arising from the liver and the biliary tract are aggressive and have limited treatment options. The recent success of immunotherapy where in patient's immune system is activated to fight the tumor is encouraging, but only a fraction of patients with liver cancer remain eligible for this treatment. There is a good pre-clinical evidence (from animal studies) that combination with high-dose focused radiation or stereotactic body radiation (SBRT) makes immunotherapy more effective in these cancers. In this review the available evidence for such combination in treating biliary tract and liver cancers was explored in depth. The preliminary evidence suggests that combining SBRT and immunotherapy is safe and there is a need for large scale trials to investigate its efficacy. The combination of stereotactic body radiation therapy (SBRT) plus immune checkpoint inhibitors (ICI) must be explored to treat advanced primary liver tumors such as hepatocellular carcinoma (HCC) and cholangiocarcinoma (CCA). Limited retrospective reviews and case reports/series suggest this combination can be effective and safe in both cancer types. With ICIs moving into the first line (IMbrave 150, HIMALAYA, and TOPAZ-1) to manage these cancers, identifying a suitable population for this approach is challenging. Patients with macrovascular invasion (MVI)-positive HCC (especially if larger veins are involved) or recurrent HCCs post-locoregional therapies (such as transarterial radioembolization (TARE), transarterial chemoembolization (TACE), or ablation), as well as those ineligible for bevacizumab or tyrosine kinase inhibitors (TKIs), should be the focus of exploring this combination in HCC. Unresectable or oligometastatic CCA patients who cannot tolerate gemcitabine/cisplatin (GC) or those who progressed on GC without durvalumab and do not have targetable mutations could also be considered for this approach. In both HCC and CCA disease groups, SBRT plus ICI can be examined post-ICI as these two modalities act synergistically to enhance anti-tumor activity (based on pre-clinical studies). Large-scale randomized trials are needed to identify the subsets of primary liver cancers suitable for this approach and to clearly define its clinical benefit.
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