Cancer Research and Treatment

Original Articles

Lung and Thoracic cancer

Intrathoracic Progression Is Still the Most Dominant Failure Pattern after First-Line Chemo-immunotherapy in Extensive-Stage Small-Cell Lung Cancer: Implications for Thoracic Radiotherapy: Dowook Kim, Hak Jae Kim, Hong-Gyun Wu, Joo Ho Lee, Suzy Kim, Tae Min Kim, Jin-Soo Kim, Byoung Hyuck Kim; Cancer Res Treat. 2024;56(2):430-441. Published online November 6, 2023; DOI: https://doi.org/10.4143/crt.2023.931

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Purpose
This study aimed to compare the failure patterns before and after the introduction of immunotherapy and to determine the role of thoracic radiotherapy (TRT) in extensive-stage small-cell lung cancer (ES-SCLC) treatment.
Materials and Methods
We retrospectively reviewed 294 patients with ES-SCLC, of which 62.2% underwent chemotherapy alone, 13.3% underwent chemotherapy followed by consolidative TRT (TRT group), and 24.5% underwent chemotherapy with immune checkpoint inhibitor (ICI group). We performed propensity-score matching (PSM) to compare each treatment group.
Results
The median follow-up duration was 10.4 months. At the first relapse, in the cohort showing objective response, the proportion of cases showing intrathoracic progression was significantly lower in the TRT group (37.8%) than in the chemotherapy-alone (77.2%, p < 0.001) and the ICI (60.3%, p=0.03) groups. Furthermore, in the subgroup analysis, TRT showed benefits related to intrathoracic progression-free survival (PFS) in comparison with ICI in patients with less than two involved extrathoracic sites (p=0.008) or without liver metastasis (p=0.02) or pleural metastasis (p=0.005) at diagnosis. After PSM, the TRT group showed significantly better intrathoracic PFS than both chemotherapy-alone and ICI groups (p < 0.001 and p=0.04, respectively), but showed no significant benefit in terms of PFS and overall survival in comparison with the ICI group (p=0.17 and p=0.31, respectively).
Conclusion
In ES-SCLC, intrathoracic progression was the most dominant failure pattern after immunotherapy. In the era of chemoimmunotherapy, consolidative TRT can still be considered a useful treatment strategy for locoregional control.

Citations

Citations to this article as recorded by

Radiotherapy(R) Integration(I) Strategy for Small(S)-Cell Lung Cancer in Extensive(E) Stage (RISE) with up to 10 metastases- a study protocol of a randomized phase II trial
Łukasz Kuncman, Jacek Fijuth, Damian Tworek, Ewa Sierko, Paweł Cisek, Michał Masłowski, Maja Lisik-Habib, Magdalena Orzechowska, Katarzyna Galwas-Kliber, Adam Antczak, Izabela Chmielewska, Barbara Ziółkowska, Marta Kurczewska-Michalak, Wojciech Kuźnicki,
BMC Cancer.2025;[Epub] CrossRef
Combining Immunotherapy with Anlotinib in Extensive-Stage Small Cell Lung Cancer: A Multicenter Analysis of Efficacy and Safety
Guogang Gao, Meiling Sun, Zhongfei Yang, Jingyi Li, Huaijun Ji, Ge Yu
Technology in Cancer Research & Treatment.2025;[Epub] CrossRef
Clinical outcomes and synergistic effect between radiotherapy and immunotherapy in patients with extensive-stage small cell lung cancer: a real-world study
Meiling Sun, Huaijun Ji, Fang Deng, Jingyi Li, Ning Xu, Yu Li
BMC Cancer.2024;[Epub] CrossRef

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Breast cancer

Impact of Postmastectomy Radiation Therapy on Breast Cancer Patients According to Pathologic Nodal Status after Modern Neoadjuvant Chemotherapy: Dowook Kim, Jin Ho Kim, In Ah Kim, Ji Hyun Chang, Kyung Hwan Shin; Cancer Res Treat. 2023;55(2):592-602. Published online October 11, 2022; DOI: https://doi.org/10.4143/crt.2022.998

Abstract PDF Supplementary Material PubReader ePub

Purpose
The utility of postmastectomy radiation therapy (PMRT) for breast cancer patients after neoadjuvant chemotherapy (NAC) is highly controversial. This study evaluated the impact of PMRT according to pathologic nodal status after modern NAC.
Materials and Methods
We retrospectively reviewed 682 patients with clinical stage II-III breast cancer who underwent NAC and mastectomy from 2013 to 2017. In total, 596 patients (87.4%) received PMRT, and 86 (12.6%) did not. We investigated the relationships among locoregional recurrence-free survival (LRRFS), disease-free survival (DFS), overall survival (OS), and various prognostic factors. Subgroup analyses were also performed to identify patients who may benefit from PMRT.
Results
The median follow-up duration was 67 months. In ypN+ patients (n=368, 51.2%), PMRT showed significant benefits in terms of LRRFS, DFS, and OS (all p < 0.001). In multivariate analyses, histologic grade (HG) III (p=0.002), lymphovascular invasion (LVI) (p=0.045), and ypN2-3 (p=0.02) were significant risk factors for poor LRRFS. In ypN1 patients with more than two prognostic factors among luminal/human epidermal growth factor receptor-2–negative subtype, HG I-II, and absence of LVI, PMRT had no significant effect on LRRFS (p=0.18). In ypN0 patients (n=351, 48.8%), PMRT was not significantly associated with LRRFS, DFS, or OS. However, PMRT showed better LRRFS in triple-negative breast cancer (TNBC) patients (p=0.03).
Conclusion
PMRT had a major impact on treatment outcomes in patients with residual lymph nodes following NAC and mastectomy. Among ypN0 patients, PMRT may be beneficial only for those with TNBC.

Citations

Citations to this article as recorded by

Impact of postmastectomy radiotherapy on locoregional recurrence and survival in patients with ypN0 breast cancer after neoadjuvant chemotherapy: A comprehensive meta-analysis and systematic review
Fangjie Ding, Junfeng Zhao, Xue Wu, Xiaoman Liu, Yunxing Yang, Ying Li, Lili Qiao, Yingying Zhang
Journal of Cancer Research and Therapeutics.2025; 21(2): 477. CrossRef
Value of postmastectomy radiotherapy on overall survival in stage II–III node-negative patients following neoadjuvant therapy: A surveillance, epidemiology, and end results-based population study
Xiaoyu Wang, Xiaolin Zhao, Pian Cheng, Xiaomeng Zou, Weike Zhang, Jie Liu
Science Progress.2025;[Epub] CrossRef
Analysis of Individualized Silicone Rubber Bolus Using Fan Beam Computed Tomography in Postmastectomy Radiotherapy: A Dosimetric Evaluation and Skin Acute Radiation Dermatitis Survey
Xue-mei Chen, Chen-di Xu, Li-ping Zeng, Xiao-tong Huang, Ao-qiang Chen, Lu Liu, Liu-wen Lin, Le-cheng Jia, Hua Li, Xiao-bo Jiang
Technology in Cancer Research & Treatment.2024;[Epub] CrossRef
Does Post-Mastectomy Radiotherapy Confer Survival Benefits on Patients With 1-3 Clinically Positive Lymph Nodes Rendered Pathologically Negative After Neoadjuvant Systemic Chemotherapy: Consensus from A Pooled Analysis?
Munaser Alamoodi
European Journal of Breast Health.2024; 20(2): 81. CrossRef
Oncological outcomes of stage I–II breast cancer treatment after subcutaneous/skin-sparing mastectomies with reconstruction
E. A. Rasskazova, A. D. Zikiryakhodzhaev
MD-Onco.2024; 4(3): 37. CrossRef
Effectiveness of mat pilates on fatigue in women with breast cancer submitted to adjuvant radiotherapy: randomized controlled clinical trial
Daniele Medeiros Torres, Kelly de Menezes Fireman, Erica Alves Nogueira Fabro, Luiz Claudio Santos Thuler, Rosalina Jorge Koifman, Anke Bergmann, Sabrina da Silva Santos
Supportive Care in Cancer.2023;[Epub] CrossRef
The Role of Sentinel Lymph Node Biopsy in Breast Cancer Patients Who Become Clinically Node-Negative Following Neo-Adjuvant Chemotherapy: A Literature Review
Giulia Ferrarazzo, Alberto Nieri, Emma Firpo, Andrea Rattaro, Alessandro Mignone, Flavio Guasone, Augusto Manzara, Giuseppe Perniciaro, Stefano Spinaci
Current Oncology.2023; 30(10): 8703. CrossRef

6,600 View
225 Download
8 Web of Science
7 Crossref

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