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Validation and real-world assessment of the Functional Assessment of Anorexia-Cachexia Therapy (FAACT) scale in patients with advanced non-small cell lung cancer and the cancer anorexia-cachexia syndrome (CACS)

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Abstract

Purpose

Patients with cancer anorexia-cachexia syndrome (CACS) suffer a significant symptom burden, impaired quality of life (QoL), and shorter survival. Measurement of QoL impairments related to CACS is thereby important both in clinical practice and in research. We aimed to further validate the Functional Assessment of Anorexia-Cachexia Therapy (FAACT) scale in an advanced lung cancer population.

Methods

We tested the performance of the FAACT and its anorexia-cachexia subscale (ACS) within a dataset of patients with advanced non-small cell lung cancer (aNSCLC), using standard statistical methods. We then compared the performance of commonly used QoL measures stratified by CACS status and by patient self-report of appetite and weight loss.

Results

The FAACT and its ACS demonstrate internal validity consistent with acceptable published ranges for other QoL scales (Cronbach alpha = 0.9 and 0.79, respectively). Correlation coefficients demonstrate moderate correlations in the expected directions between FAACT and ACS and scales that measure related constructs. Comparing patients with and without CACS, the ACS is more sensitive to change than other QoL instruments (mean score 33.1 vs. 37.2, p = 0.011, ES = 0.58).

Conclusion

In patients with aNSCLC, the FAACT and its ACS performed well compared with other instruments, further supporting their validity and value in clinical research. FAACT and ACS scores covaried with symptoms and other QoL changes that are typical hallmarks of CACS, lending further support to their use as QoL endpoints in clinical trials among patients with CACS.

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Acknowledgments

Dr. Abernethy reports personal fees (as ownership or employment) from Advoset, Orange Leaf Associates, Athena Health and Flatiron Health, Inc. Grants from Alliance for Clinical Trials in Oncology, American Cancer Society, Bristol-Myers Squibb, Celgene, DARA, Denderon, GlaxoSmithKline, Helsinn Healthcare, Helsinn Therapeutics, Kanglaite, Mayo Clinic, Medical College of Wisconsin, Memorial Sloan Kettering Cancer Center, Pfizer, University of North Carolina at Chapel HIll, University of South Florida and federal grants from NIH, National Cancer Institute, AHRA, National Institute for Nursing Research, National Institutes on Aging; personal fees from American Academy of Hospice and Palliative Medicine (as immediate past president), Pfizer, and ACORN Research. Dr. LeBlanc is a recipient of a Junior Career Development Award from the National Palliative Care Research Center (NPCRC), has received research support (paid to Duke University Medical Center) from Celgene and Helsinn Therapeutics, and honoraria from Helsinn (<$5000). The authors acknowledge the editorial assistance of Donald T. Kirkendall, ELS, a Duke-employed medical editor.

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The remaining co-authors have no disclosures or conflicts of interest to report.

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Correspondence to Thomas W. LeBlanc.

Additional information

This work was funded in part by a research grant from Helsinn to Duke University Medical Center.

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LeBlanc, T.W., Samsa, G.P., Wolf, S.P. et al. Validation and real-world assessment of the Functional Assessment of Anorexia-Cachexia Therapy (FAACT) scale in patients with advanced non-small cell lung cancer and the cancer anorexia-cachexia syndrome (CACS). Support Care Cancer 23, 2341–2347 (2015). https://doi.org/10.1007/s00520-015-2606-z

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  • DOI: https://doi.org/10.1007/s00520-015-2606-z

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