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Prognostic Significance of Patient-Reported Outcomes in Cancer.

PURPOSE
Performance status (PS), an established prognostic surrogate of cancer survival, is a physician-synthesized metric of patient symptoms and mobility that is prone to bias and subjectivity. The National Cancer Institute (NCI) Patient-Reported Outcomes Measurement Information System-Cancer (PROMIS-Ca) Bank, a patient-centric patient-reported outcome (PRO) evaluation of physical function (PF), fatigue, depression, anxiety, and pain, shares subject matter with PS and, therefore, may also be prognostic while eliminating physician interpretation.


METHODS
Patients at Huntsman Cancer Institute were assessed using the NCI PROMIS-Ca Bank. Using tablets at routine office visits, PF, fatigue, depression, anxiety, and pain scores were collected from patients with advanced melanoma, non-small-cell lung cancer, colorectal cancer, and breast cancer. A PRO score collected at a single time point within 6 months of metastatic diagnosis for each patient was merged with curated clinical outcome data. The association of PROs, overall survival (OS), and hospitalization-free survival (HFS) were assessed in multivariable analysis that included sex and cancer type.


RESULTS
Two hundred eighty-two complete sets of patient data were available for analysis. All 5 PRO domains were strongly prognostic of OS and HFS. While the PRO domains were interrelated with moderate to strong correlations (0.40-0.79), multivariable regression suggested that PF was most strongly associated with the clinical outcomes of OS (P < .001) and HFS (P < .001).


CONCLUSION
NCI PROMIS-Ca PROs may be prognostic of both cancer survival and likelihood of hospitalization. Future prospective studies are needed for all major prognostic factors to fully understand the independent prognostic value of PROs.