Non-small cell lung cancer in stages I-IIIB: Long-term results of definitive radiotherapy with doses ≥ 80 Gy in standard fractionation.

Strahlenther Onkol

University Clinic of Radiotherapy and Radiation Oncology and radART - Institute for research and development on Advanced Radiation Technologies, Paracelsus Medical University, Salzburg, Austria.

Published: October 2010

Purpose: To investigate therapeutic outcome of dose escalation ≥ 80 Gy in nonresected non-small cell lung cancer (NSCLC).

Patients And Methods: 124 consecutive patients with histologically/cytologically proven NSCLC were enrolled. Tumor stage I, II, IIIA, and IIIB was diagnosed in 30, eight, 39, and 47 patients, respectively. 38 patients (31%) had weight loss > 5% during the 3 months before diagnosis. A median dose of 88.2 Gy (range 80.0-96.0 Gy), 69.3 Gy (63.0-88.0 Gy) and 56.7 Gy was applied to primary lesions, involved lymph nodes, and elective nodes (within a region of about 6 cm cranial to macroscopically involved nodes), respectively. Daily fractional ICRU doses of 2.0-2.2 Gy were delivered by the conformal target-splitting technique. 58 patients (47%) received induction chemotherapy, in median two cycles prior to radiotherapy.

Results: Median follow-up time of all patients was 19 months, of patients alive 72.4 months (69-121 months). The cumulative actual overall survival rate at 2 and 5 years amounts to 39% and 11.3%, respectively, resulting in a median overall survival time of 19.6 months. According to stages I, II, IIIA, and IIIB, the median overall survival times are 31.8, 31.4, 19.0, and 14.5 months, respectively. The locoregional tumor control rate at 2 years is 49%. Apart from one treatment-related death (pneumonitis), acute toxicity according to EORTC/RTOG scores was moderate: lung grade 2 (n = 7), grade 3 (n = 3); esophagus grade 1 (n = 11); heart grade 3 (n = 1, pericarditis). No late toxicity grade > 1 has been observed.

Conclusion: Sequential, conventionally fractionated high-dose radiotherapy by conformal target splitting is well tolerated. The results for survival and locoregional tumor control seem to at least equalize the outcome of simultaneous chemoradiation approaches, which, at present, are considered "state of the art" for patients with nonresected NSCLC. A higher potential of radiation therapy might be reached by accelerated fractionation regimens.

Download full-text PDF

Source
http://dx.doi.org/10.1007/s00066-010-2108-3DOI Listing

Publication Analysis

Top Keywords

non-small cell
8
cell lung
8
lung cancer
8
iiia iiib
8
rate years
8
median survival
8
locoregional tumor
8
tumor control
8
patients
7
months
6

Similar Publications

AI decision support systems can assist clinicians in planning adaptive treatment strategies that can dynamically react to individuals' cancer progression for effective personalized care. However, AI's imperfections can lead to suboptimal therapeutics if clinicians over or under rely on AI. To investigate such collaborative decision-making process, we conducted a Human-AI interaction study on response-adaptive radiotherapy for non-small cell lung cancer and hepatocellular carcinoma.

View Article and Find Full Text PDF

Non-small cell lung cancer (NSCLC) remains a dire disease being the first cause of cancer death among both genders. Early-stage NSCLC often has better treatment outcomes despite it being a highly heterogeneous disease. So far, the neo-adjuvant chemotherapy strategies have led to a small benefit with an improvement of 5% in overall survival as an absolute benefit.

View Article and Find Full Text PDF

Objectives: The aim of this study was to determine the status of tertiary lymphoid structures (TLSs) using radiomic features in patients with invasive pulmonary adenocarcinoma (IA).

Methods: In this retrospective study, patients with IA from November 2015 to March 2024 were recruited from two independent centers (center 1, training and internal test data set; center 2, external test data set). TLS was divided into two groups according to hematoxylin-eosin staining.

View Article and Find Full Text PDF

Lung cancer is the leading cause of cancer-related fatalities globally, accounting for the highest mortality rate among both men and women. Mutations in the epidermal growth factor receptor (EGFR) gene are frequently found in non-small cell lung cancer (NSCLC). Since curcumin and CB[2]UN support various medicinal applications in drug delivery and design, we investigated the effect of curcumin and CB[2]UN-based drugs in controlling EGFR-mutant NSCLC through a dodecagonal computational approach.

View Article and Find Full Text PDF

This study demonstrates the analytical and clinical validity of the approved (United States and Japan) plasma-based Guardant360 companion diagnostic (CDx) test for selecting patients with human epidermal growth factor receptor 2 (HER2 [ERBB2])-mutated (HER2m) non-small-cell lung cancer (NSCLC) for trastuzumab deruxtecan (T-DXd) treatment. Concordance between the Guardant360 CDx test and the plasma-based AVENIO ctDNA Expanded Kit Assay (AVENIO), as well as the tissue-based clinical trial assays (CTAs) was investigated. Clinical utility was assessed by comparing T-DXd clinical efficacy results of patients in DESTINY-Lung01/02 who tested positive for HER2 mutations using the Guardant360 CDx test to benchmark efficacy results from DESTINY-Lung01/02.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!