Histology of non-small cell lung cancer predicts the response to stereotactic body radiotherapy

Juliane Hörner-Rieber, Denise Bernhardt, Julian Dern, Laila König, Sebastian Adeberg, Angela Paul, Claus Peter Heussel, Jutta Kappes, Hans Hoffmann, Felix J.P. Herth, Jürgen Debus, Arne Warth, Stefan Rieken

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

Background and purpose To investigate the prognostic impact of different histological subtypes of non-small cell lung cancer (NSCLC) on outcome following stereotactic body radiotherapy (SBRT) for NSCLC patients. Materials and methods We analyzed 126 consecutive patients with early-stage adenocarcinoma or squamous cell carcinoma treated with SBRT from 2004 to 2016. Adenocarcinoma patients were further sub-classified as high-risk or low-risk tumors. Results With a median follow-up time of 22 months, 2-year overall survival (OS), local (LC), and distant control (DC) were 68%, 90% and 79%, respectively. For LC, histologic subtype was identified as major independent prognostic factor (p = 0.033): while LC was 81% for squamous cell carcinoma patients, LC was significantly improved for high-risk and even more non-high-risk adenocarcinoma patients with 96% and 100%, respectively (p = 0.026). The negative prognostic impact of the histologic subtype “squamous cell carcinoma” was not evident when patients received SBRT with higher total doses in EQD2 (2 Gy equivalent dose): if patients were treated with a total dose in EQD2 ≥ 150 Gy, no significant difference in LC for histologic subtypes was detected anymore (p = 0.355). Conclusion In the current study, histologic subtypes of NSCLC predicted local control probabilities following SBRT. Prospective, multi-center studies are needed to evaluate the prognostic impact of histology and consecutively the need for SBRT dose adaptation.

Original languageEnglish
Pages (from-to)317-324
Number of pages8
JournalRadiotherapy and Oncology
Volume125
Issue number2
DOIs
StatePublished - Nov 2017
Externally publishedYes

Keywords

  • Adenocarcinoma
  • Histologic subtype
  • Non-small cell lung cancer
  • Squamous cell carcinoma
  • Stereotactic body radiotherapy (SBRT)

Fingerprint

Dive into the research topics of 'Histology of non-small cell lung cancer predicts the response to stereotactic body radiotherapy'. Together they form a unique fingerprint.

Cite this