PMID- 36935858 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230321 IS - 2405-6308 (Electronic) IS - 2405-6308 (Linking) VI - 39 DP - 2023 Mar TI - Early complete tumor response as a survival predictor in hepatocellular carcinoma patients receiving stereotactic body radiation therapy. PG - 100465 LID - 10.1016/j.ctro.2022.03.010 [doi] LID - 100465 AB - BACKGROUND AND PURPOSE: To evaluate the different response patterns after Stereotactic Body Radiation Therapy (SBRT) and their predictive value in local control and progression of hepatocellular carcinoma (HCC). MATERIALS AND METHODS: Seventy-two HCC patients who were treated with SBRT during 2015-2020 were included in this retrospective study. The assessment was made using MRI, CT, and PET-CT. Local and systemic responses were determined according to modified Response Evaluation Criteria in Solid Tumors (mRECIST) criteria during follow up. Patients were categorized as early responders (complete response during 6 months after radiotherapy) or non-early responders (the rest of the patients). Prognostic factors were determined using multivariate logistic models. RESULTS: The median follow-up was 24.0 months (range, 7.7-74.5 months). We found that 84.7%(61/72) of patients achieved a complete response. Early responses occurred in 45 patients (45/72, 62.5%), and they had 1-, 2-, and 5- year intrahepatic outfield-free survival (OutFFS) rates of 86.2%, 80.3%, and 76.3% vs. 55.3%, 44.7%, and 33.5% in non-early responses patients, whereas the 1-, 2-, and 5- year distant metastasis-free survival (DMFS) were 95.5%, 84.5% and 79.5% and 74.1%, 56.2% and 56.2%, respectively. The 1-, 2-, and 5-year overall survival (OS) were 97.7%, 92.1%, 79.1%, and 85.2%, 53.8%, and 40.3%, respectively. Multivariate analysis revealed that early tumor response was an independent predictor of OutFFS, DMFS, and OS. CONCLUSIONS: Early complete tumor response within 6 months after radiotherapy predicted better intrahepatic outfield-free survival, distant metastasis-free survival, and overall survival outcomes. Confirmation is warranted for early response on SBRT to guide decision making. CI - (c) 2022 The Authors. FAU - Wu, Qi-Qiao AU - Wu QQ AD - Department of Radiation Oncology, Fudan University Zhongshan Hospital, Xiamen Branch, Jinhu Road 668, Xiamen 361006, China. FAU - Chen, Yi-Xing AU - Chen YX AD - Department of Radiation Oncology, Fudan University Zhongshan Hospital, Fenglin Road 188, Shanghai 200030, China. FAU - Du, Shi-Suo AU - Du SS AD - Department of Radiation Oncology, Fudan University Zhongshan Hospital, Fenglin Road 188, Shanghai 200030, China. FAU - Hu, Yong AU - Hu Y AD - Department of Radiation Oncology, Fudan University Zhongshan Hospital, Fenglin Road 188, Shanghai 200030, China. FAU - Yang, Ping AU - Yang P AD - Department of Radiation Oncology, Fudan University Zhongshan Hospital, Fenglin Road 188, Shanghai 200030, China. FAU - Zeng, Zhao-Chong AU - Zeng ZC AD - Department of Radiation Oncology, Fudan University Zhongshan Hospital, Fenglin Road 188, Shanghai 200030, China. LA - eng PT - Journal Article DEP - 20220808 PL - Ireland TA - Clin Transl Radiat Oncol JT - Clinical and translational radiation oncology JID - 101713416 PMC - PMC10014333 OTO - NOTNLM OT - Complete response OT - Helical intensity-modulated radiotherapy OT - Hepatocellular carcinoma OT - Liver OT - Stereotactic body radiotherapy COIS- The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/03/21 06:00 MHDA- 2023/03/21 06:01 PMCR- 2022/08/08 CRDT- 2023/03/20 03:36 PHST- 2021/09/01 00:00 [received] PHST- 2022/02/21 00:00 [revised] PHST- 2022/03/24 00:00 [accepted] PHST- 2023/03/20 03:36 [entrez] PHST- 2023/03/21 06:00 [pubmed] PHST- 2023/03/21 06:01 [medline] PHST- 2022/08/08 00:00 [pmc-release] AID - S2405-6308(22)00023-4 [pii] AID - 100465 [pii] AID - 10.1016/j.ctro.2022.03.010 [doi] PST - epublish SO - Clin Transl Radiat Oncol. 2022 Aug 8;39:100465. doi: 10.1016/j.ctro.2022.03.010. eCollection 2023 Mar.