Abstract
Purpose
To elucidate treatment patterns and their outcomes in patients with small cell lung cancer (SCLC) and brain metastasis (BM).
Methods
In this retrospective study, patients with SCLC and BM were stratified by treatment modality into three groups: those treated with systemic therapy only, those treated with stereotactic radiosurgery (SRS) and systemic therapy, and those treated with whole-brain radiotherapy (WBRT) and systemic therapy. The primary outcomes were overall survival (OS) and time to central nervous system progression (TTCP).
Results
The analysis included 149 patients. After BM diagnosis, 48 patients (32.2%) received systemic therapy alone, 33 received SRS with systemic therapy, and 68 received WBRT with systemic therapy. The median OS and TTCP were 7.2 months and 8.7 months, respectively. Patients receiving WBRT with systemic therapy exhibited better intracranial control, but not better OS, than did the other patients. Key prognostic factors affecting OS were age, BM lesion count, chemotherapy, and immunotherapy. Notably, the Eastern Cooperative Oncology Group performance status and BM lesion count significantly influenced intracranial control in patients treated with SRS and systemic therapy.
Conclusion
Although WBRT combined with systemic therapy offer better intracranial control in patients with SCLC and BM, this approach is not superior to the other approaches in terms of OS benefits. Emerging systemic therapies, such as immunotherapy, may be used as alternative or adjunctive treatments for specific patient populations. Further studies are warranted to refine treatment selection.
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Data Availability
The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Funding
This work was supported by National Science and Technology Council, Taiwan [grant number 111-2926-I-075-501-G].
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Material preparation, data collection and analysis were performed by CLC, HCY and YTL. The first draft of the manuscript was written by CLC and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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This study was approved by the Institutional Review Board of Taipei Veterans General Hospital, Taiwan (approval number: 2023-06-016CC).
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Competing interests
CLC has received honoraria from AstraZeneca, Boehringer Ingelheim, Pfizer, and Roche. YHL has received honoraria from AstraZeneca, Boehringer Ingelheim, and Pfizer.YMC has received honoraria from Boehringer Ingelheim, Eli Lilly, Roche/Genentech/Chugai, MSD, Pfizer, Novartis, BMS, Ono Pharmaceutical, AstraZeneca, and Takeda Oncology and provided advisory services to Boehringer Ingelheim, Eli Lilly, Roche/Chugai, MSD, AstraZeneca, and Takeda Oncology.The other authors declare no conflicts of interest relevant to the content of this manuscript.
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Chiang, CL., Yang, HC., Liao, YT. et al. Treatment and survival of patients with small cell lung cancer and brain metastasis. J Neurooncol 165, 343–351 (2023). https://doi.org/10.1007/s11060-023-04512-2
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DOI: https://doi.org/10.1007/s11060-023-04512-2