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Br J Cancer. 2012 Feb 14;106(4):646-50. doi: 10.1038/bjc.2011.589. Epub 2012 Jan 12.

Baseline quality of life as a prognostic survival tool in patients receiving sunitinib for metastatic renal cell carcinoma.

Author information

  • 1Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, USA. d-cella@northwestern.edu

Abstract

BACKGROUND:

In a randomized phase III trial of sunitinib vs interferon-alfa (IFN-α) in metastatic renal cell carcinoma (mRCC), better baseline quality of life (QoL) was predictive of longer survival. Using this dataset, we have developed a novel prognostic tool that establishes a relationship between baseline QoL scores and median survival time.

METHODS:

Baseline QoL was assessed using the FACT-Kidney Symptom Index-15 item (FKSI-15), its disease-related symptoms (FKSI-DRS) subscale, and the Functional Assessment of Cancer Therapy-General (FACT-G) scale. Weibull models estimated median progression-free survival (mPFS) and overall survival (mOS) as a function of baseline QoL.

RESULTS:

Longer PFS and OS were associated with higher baseline FKSI-15, FKSI-DRS, and FACT-G scores (P<0.05), and baseline FKSI-15 score was the best predictor of survival. For example, for a baseline FKSI-15 score of 60, the predicted mPFS was 67.9 weeks, and predicted mOS was 240.6 weeks. The magnitude of benefit was greater with sunitinib vs IFN-α for a given baseline QoL score.

CONCLUSION:

This novel tool indicates that baseline FKSI-15 scores were linked to mPFS and mOS in a clear and interpretable way. The results support evaluation of patient-reported QoL symptoms at baseline as a prognostic indicator of survival in clinical research and practice.

PMID:
22240794
[PubMed - indexed for MEDLINE]
PMCID:
PMC3322947
Free PMC Article

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