Abstract
Objectives
To explore the relationship between osteosclerotic changes and chemotherapy response in non-small-cell lung cancer (NSCLC) patients with bone metastases (BM).
Methods
Fifty-two NSCLC patients with BM were enrolled from 1 January 2010–31 June 2015 and divided into two groups based on their CT features: an osteosclerotic change (OC) group and a no-osteosclerotic change (NOC) group. The disease control rate (DCR) was evaluated, and progression-free survival (PFS) was analysed using Kaplan-Meier curves. Univariate and multivariate Cox regression analyses were performed to analyse the factors that could affect PFS.
Results
Osteosclerotic changes were observed in 35/52 patients. The median interval when osteosclerotic changes occurred was 2 months (range 1–3 months) after chemotherapy. The OC group had a significantly higher 3-month DCR than the NOC group (p < 0.001). The OC group had a higher 1-year PFS rate than the NOC group (1-year PFS: 74.9% vs. 30.2%, p < 0.001). Univariate Cox regression analysis indicated that pathological subtype (HR = 4.419; 95% CI = 1.635–11.941, p = 0.003) and osteosclerotic changes (HR = 0.199; 95% CI = 0.083–0.477, p < 0.001) were significant predictors of PFS.
Conclusion
Early osteosclerotic changes predict chemotherapy response in NSCLC patients with BM.
Key Points
• Osteosclerotic changes were prevalent CT features after chemotherapy in NSCLC patients.
• Osteosclerotic changes were positively related to increased 3-month DCR.
• Osteosclerotic changes were positively related to increased 1-year PFS rate.
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Abbreviations
- BM:
-
Bone metastases
- CT:
-
Computed tomography
- DCR:
-
Disease control rate
- NOC:
-
Without osteosclerotic changes
- NSCLC:
-
Non-small-cell lung cancer
- OC:
-
Osteosclerotic changes
- PFS:
-
Progression-free survival
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We thank the native English-speaking scientists of American Journal Experts for editing our manuscript.
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The scientific guarantor of this publication is Rong Zhang, Sun Yat-Sen University Cancer Center
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The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.
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No complex statistical methods were necessary for this paper.
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Written informed consent was not required for this study because this was a retrospective study
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Institutional Review Board approval was obtained.
Methodology
• retrospective
• observational
• performed at one institution
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Rong, D., Mao, Y., Yang, Q. et al. Early osteosclerotic changes predict chemotherapy response in non-small-cell lung cancer patients with bone metastases. Eur Radiol 28, 4362–4369 (2018). https://doi.org/10.1007/s00330-017-5253-6
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DOI: https://doi.org/10.1007/s00330-017-5253-6