<学術雑誌論文>
Time-variant tumor growth trajectory models for in silico randomized controlled trials for patients with early-stage non-small cell lung cancer in optimizing stereotactic body radiation therapy

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概要 Purpose: Applying new treatments to real patients to verify therapeutic efficacy may induce various risks, such as critical adverse events. Additionally, there are ethical and financial issues in real...-world randomized controlled trials (RCTs). This study aimed to develop mathematical models of time-variant tumor growth trajectories (TGTs) for in silico RCTs targeting patients with stage I non-small cell lung cancer (NSCLC) to optimize stereotactic body radiation therapy (SBRT).
Methods: The basic idea of the in silico RCT was to evaluate the endpoint of progression-free survival (PFS) curves for the two regimens derived from TGTs for virtual patient data produced via mathematical models. TGT models with a relative number of tumor cells were proposed by integrating the Bertalanffy-Pütter (BP) model and linear quadratic model into tumor growth models. To validate the proposed models, we performed three RCTs, 30 Gy/1 fraction (Fr) versus 60 Gy/3 Fr, 48 Gy/4 Fr versus 75 Gy/25 Fr, and 34 Gy/1 Fr versus 48 Gy/4 Fr.
Results: The three in silico RCTs showed no statistically significant differences in PFS curves, which was similar to the results of three previous studies.
Conclusions: The proposed mathematical models could be leveraged for in silico RCTs to optimize SBRT.
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公開年月日:2026.08.05 pdf 2.75 MB    

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登録日 2025.11.18
更新日 2025.11.19