npj Precision Oncology (Mar 2023)

Systemic immune modulation by stereotactic radiotherapy in early-stage lung cancer

  • Eleni Gkika,
  • Elke Firat,
  • Sonja Adebahr,
  • Erika Graf,
  • Ilinca Popp,
  • Gianluca Radicioni,
  • Simon S. Lo,
  • Ursula Nestle,
  • Nils H. Nicolay,
  • Gabriele Niedermann,
  • Dan G. Duda,
  • Anca-L. Grosu

DOI
https://doi.org/10.1038/s41698-023-00358-z
Journal volume & issue
Vol. 7, no. 1
pp. 1 – 6

Abstract

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Abstract We performed a prospective study of circulating immune cell changes after stereotactic body radiotherapy (SBRT) in 50 early-stage NSCLC patients. We found no significant increase in CD8+ cytotoxic T lymphocytes at first follow-up (the primary endpoint) but detected a significant increase in expanding Ki-67+CD8+ and Ki-67+CD4+ T-cell fractions in patients treated with 10 Gy or less per fraction. SBRT can induce significant expansion in circulating effector T-cells immediately post-treatment.