Background/Aim: Reportedly, hypertension tends to be associated with response to bevacizumab therapy, because bevacizumab suppresses vascular nitric oxide production. In this study we examined the predictive value of nitric oxide in bevacizumab-treated non-small cell lung cancer (NSCLC) patients. Patients and Methods: Fifteen patients with advanced or recurrent NSCLC treated with bevacizumab-based regimens were evaluated retrospectively. Serum NOx (NO2-/NO3-) was assayed by the Griess method. Results: Serum nitric oxide levels were decreased after two courses of bevacizumab treatment in our responder group (p=0.02). According to the change in nitric oxide levels after the second course of treatment, median progression-free survival was 11.0 months in the group with decreased serum nitric oxide and 7.6 months in the group with increased serum nitric oxide (p=0.08). Conclusion: Serum nitric oxide levels could be a predictive biomarker for response to bevacizumab in NSCLC patients.
CITATION STYLE
Muto, S., Takagi, H., Owada, Y., Inoue, T., Watanabe, Y., Yamaura, T., … Suzuki, H. (2017). Serum nitric oxide as a predictive biomarker for bevacizumab in non-small cell lung cancer patients. Anticancer Research, 37(6), 3169–3174. https://doi.org/10.21873/anticanres.11676
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