A retrospective study of clinicopathologic and molecular features of inoperable early-stage non-small cell lung cancer treated with stereotactic ablative radiotherapy
Background/Purpose: Stereotactic ablative radiotherapy (SABR) is the treatment of choice for medically inoperable, early-stage non-small cell lung cancer (ES-NSCLC). The influence of oncogenic driver alterations and comorbidities are not well known. Here we present treatment outcomes based on clinic...
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2021
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oai:doaj.org-article:8f093c41272a4b83bdc71725bb97894e2021-12-02T04:59:09ZA retrospective study of clinicopathologic and molecular features of inoperable early-stage non-small cell lung cancer treated with stereotactic ablative radiotherapy0929-664610.1016/j.jfma.2020.12.028https://doaj.org/article/8f093c41272a4b83bdc71725bb97894e2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0929664620306288https://doaj.org/toc/0929-6646Background/Purpose: Stereotactic ablative radiotherapy (SABR) is the treatment of choice for medically inoperable, early-stage non-small cell lung cancer (ES-NSCLC). The influence of oncogenic driver alterations and comorbidities are not well known. Here we present treatment outcomes based on clinicopathologic features and molecular profiles. Methods: We retrospectively analyzed patients treated with SABR for inoperable ES-NSCLC. Molecular features of oncogenic driver alterations included EGFR, ALK, and ROS1. Comorbidities were assessed using the age-adjusted Charlson Comorbidity Index (ACCI). Survival was calculated using the Kaplan–Meier method. The Cox regression model was performed for univariate and multivariate analyses of prognostic factors. Competing risk analysis was used to evaluate the cumulative incidence of disease progression. Results: From 2008 to 2020, 100 patients (median age: 82 years) were enrolled. The majority of patients were male (64%), ever-smokers (60%), and had adenocarcinoma (65%). With a median follow-up of 21.5 months, the median overall survival (OS) and real-world progression-free survival were 37.7 and 25.1 months, respectively. The competing-risk-adjusted 3-year cumulative incidences of local, regional, and disseminated failure were 8.2%, 14.5%, and 31.2%, respectively. An ACCI ≥7 was independently associated with inferior OS (hazard ratio [HR] 2.45, p = 0.03). Tumor size ≥4 cm (HR 4.16, p < 0.001) was the most important independent prognostic factor predicting real-world progression. EGFR mutation status had no impact on the outcomes. Conclusion: SABR provides excellent local control in ES-NSCLC, although disseminated failures remains a major concern. ACCI is the best indicator for OS, while tumor sizes ≥4 cm predicts poor disease control.I-Han LeeGuann-Yiing ChenChun-Ru ChienJason Chia-Hsien ChengJenny Ling-Yu ChenWen-Chi YangJin-Shing ChenFeng-Ming HsuElsevierarticleStereotactic ablative radiotherapyNon-small cell lung cancerPrognostic factorOncogenic driver alterationInoperable early-stageMedicine (General)R5-920ENJournal of the Formosan Medical Association, Vol 120, Iss 12, Pp 2176-2185 (2021) |
institution |
DOAJ |
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DOAJ |
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EN |
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Stereotactic ablative radiotherapy Non-small cell lung cancer Prognostic factor Oncogenic driver alteration Inoperable early-stage Medicine (General) R5-920 |
spellingShingle |
Stereotactic ablative radiotherapy Non-small cell lung cancer Prognostic factor Oncogenic driver alteration Inoperable early-stage Medicine (General) R5-920 I-Han Lee Guann-Yiing Chen Chun-Ru Chien Jason Chia-Hsien Cheng Jenny Ling-Yu Chen Wen-Chi Yang Jin-Shing Chen Feng-Ming Hsu A retrospective study of clinicopathologic and molecular features of inoperable early-stage non-small cell lung cancer treated with stereotactic ablative radiotherapy |
description |
Background/Purpose: Stereotactic ablative radiotherapy (SABR) is the treatment of choice for medically inoperable, early-stage non-small cell lung cancer (ES-NSCLC). The influence of oncogenic driver alterations and comorbidities are not well known. Here we present treatment outcomes based on clinicopathologic features and molecular profiles. Methods: We retrospectively analyzed patients treated with SABR for inoperable ES-NSCLC. Molecular features of oncogenic driver alterations included EGFR, ALK, and ROS1. Comorbidities were assessed using the age-adjusted Charlson Comorbidity Index (ACCI). Survival was calculated using the Kaplan–Meier method. The Cox regression model was performed for univariate and multivariate analyses of prognostic factors. Competing risk analysis was used to evaluate the cumulative incidence of disease progression. Results: From 2008 to 2020, 100 patients (median age: 82 years) were enrolled. The majority of patients were male (64%), ever-smokers (60%), and had adenocarcinoma (65%). With a median follow-up of 21.5 months, the median overall survival (OS) and real-world progression-free survival were 37.7 and 25.1 months, respectively. The competing-risk-adjusted 3-year cumulative incidences of local, regional, and disseminated failure were 8.2%, 14.5%, and 31.2%, respectively. An ACCI ≥7 was independently associated with inferior OS (hazard ratio [HR] 2.45, p = 0.03). Tumor size ≥4 cm (HR 4.16, p < 0.001) was the most important independent prognostic factor predicting real-world progression. EGFR mutation status had no impact on the outcomes. Conclusion: SABR provides excellent local control in ES-NSCLC, although disseminated failures remains a major concern. ACCI is the best indicator for OS, while tumor sizes ≥4 cm predicts poor disease control. |
format |
article |
author |
I-Han Lee Guann-Yiing Chen Chun-Ru Chien Jason Chia-Hsien Cheng Jenny Ling-Yu Chen Wen-Chi Yang Jin-Shing Chen Feng-Ming Hsu |
author_facet |
I-Han Lee Guann-Yiing Chen Chun-Ru Chien Jason Chia-Hsien Cheng Jenny Ling-Yu Chen Wen-Chi Yang Jin-Shing Chen Feng-Ming Hsu |
author_sort |
I-Han Lee |
title |
A retrospective study of clinicopathologic and molecular features of inoperable early-stage non-small cell lung cancer treated with stereotactic ablative radiotherapy |
title_short |
A retrospective study of clinicopathologic and molecular features of inoperable early-stage non-small cell lung cancer treated with stereotactic ablative radiotherapy |
title_full |
A retrospective study of clinicopathologic and molecular features of inoperable early-stage non-small cell lung cancer treated with stereotactic ablative radiotherapy |
title_fullStr |
A retrospective study of clinicopathologic and molecular features of inoperable early-stage non-small cell lung cancer treated with stereotactic ablative radiotherapy |
title_full_unstemmed |
A retrospective study of clinicopathologic and molecular features of inoperable early-stage non-small cell lung cancer treated with stereotactic ablative radiotherapy |
title_sort |
retrospective study of clinicopathologic and molecular features of inoperable early-stage non-small cell lung cancer treated with stereotactic ablative radiotherapy |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://doaj.org/article/8f093c41272a4b83bdc71725bb97894e |
work_keys_str_mv |
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