Abstract
Purpose
Cancer-related dyspnea is a common, distressing, and difficult-to-manage symptom in cancer patients, resulting in diminished quality of life and poor prognosis. Buspirone, a non-benzodiazepine anxiolytic which does not suppress respiration and has proven efficacy in the treatment of generalized anxiety disorder, has been suggested to relieve the sensation of dyspnea in patients with COPD. The main objective of our study was to evaluate whether buspirone alleviates dyspnea in cancer patients.
Methods
We report on a randomized, placebo-controlled trial of 432 patients (mean age 64, female 51 %, lung cancer 62 %) from 16 participating Community Clinical Oncology Program (CCOP) sites with grade 2 or higher dyspnea, as assessed by the Modified Medical Research Council Dyspnea Scale. Dyspnea was assessed by the Oxygen Cost Diagram (OCD; higher scores are better) and anxiety by the state subscale of the State‐Trait Anxiety Inventory (STAI-S; lower scores are better) at baseline and after the 4-week intervention (post-intervention).
Results
Mean scores from baseline to post-intervention for buspirone were OCD 8.7 to 9.0 and STAI-S 40.5 to 40.1 and for placebo were OCD 8.4 to 9.3 and STAI-S 40.9 to 38.6 with raw improvements over time on both measures being greater in the placebo group. Analysis of covariance (ANCOVA) controlling for baseline scores showed no statistically significant difference between groups for OCD (P = 0.052) or STAI-S (P = 0.062).
Conclusion
Buspirone did not result in significant improvement in dyspnea or anxiety in cancer patients. Thus, buspirone should not be recommended as a pharmacological option for dyspnea in cancer patients.
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Acknowledgments
The authors would like to thank the clinicians, patients, clinical staff, and data managers who made this study possible.
Funding
This study was funded by the NCI grants U10 CA37420 and R25CA10618.
Conflict of interest
The authors declare that they have no competing interests. The authors have full control of all primary data and agree to allow the journal to review their data if requested.
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Peoples, A.R., Bushunow, P.W., Garland, S.N. et al. Buspirone for management of dyspnea in cancer patients receiving chemotherapy: a randomized placebo-controlled URCC CCOP study. Support Care Cancer 24, 1339–1347 (2016). https://doi.org/10.1007/s00520-015-2903-6
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DOI: https://doi.org/10.1007/s00520-015-2903-6