Assessment of prognostic value and development of predictive model for prolonged lymphopenia in patients with glioblastoma following chemoradiotherapy

  • 0Department of Radiation Oncology, Graduate School of Medicine, Hokkaido University, Kita 15, Nishi 7, Kita-ku, Sapporo 060-8638, Japan.

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Summary

This summary is machine-generated.

Prolonged lymphopenia after glioblastoma chemoradiotherapy is linked to shorter progression-free survival. Predictive factors include irradiated brain volume and patient characteristics, suggesting strategies to reduce radiation exposure may improve outcomes.

Area Of Science

  • Neuro-oncology
  • Radiation Oncology
  • Immunology

Background

  • Lymphopenia during chemoradiotherapy (CRT) for glioblastoma is a known poor prognostic factor.
  • The impact of prolonged lymphopenia (PL) after CRT on glioblastoma prognosis requires further investigation.

Purpose Of The Study

  • To investigate the association between PL and glioblastoma prognosis.
  • To develop a predictive model for PL risk following CRT.

Main Methods

  • Analysis of 87 primary glioblastoma patients undergoing postoperative CRT.
  • Definition of PL as grade 2+ lymphopenia one month post-CRT.
  • Survival analysis, risk factor identification, and predictive model development.

Main Results

  • 41 out of 87 patients developed PL.
  • PL was associated with significantly shorter progression-free survival (PFS) (8.0 vs 15.4 months).
  • Brain V20Gy, gross total resection (GTR), and preoperative Karnofsky performance status (KPS) were significant risk factors for PL.

Conclusions

  • Prolonged lymphopenia is a significant factor for shorter PFS in glioblastoma patients.
  • A predictive model incorporating irradiated brain volume, GTR, and KPS can estimate PL risk.
  • Reducing irradiated brain volume may prevent PL and potentially improve glioblastoma prognosis by preserving anti-tumor immunity.