Prognostic value of the Memorial Sloan Kettering Prognostic Score in metastatic pancreatic adenocarcinoma

BACKGROUND: The Memorial Sloan Kettering Prognostic Score (MPS), a composite of the neutrophil-lymphocyte ratio (NLR) and albumin, is an objective prognostic tool created as a more readily available alternative to the Glasgow Prognostic Score. A prior analysis of patients with metastatic pancreatic adenocarcinoma (mPDAC) suggested that the MPS may predict survival, although it did not control for clinically relevant factors. METHODS: MPS scores were calculated for patients with mPDAC treated at Memorial Sloan Kettering Cancer Center from January 1, 2011, to December 31, 2014. An MPS scale of 0 to 2 was used: 0 for an albumin level >= 4 g/dL and an NLR <= 4 g/dL, 1 for either an albumin level < 4 g/dL or an NLR > 4 g/dL, and 2 for an albumin level < 4 g/dL and an NLR > 4 g/dL. Performance status, antineoplastic therapy, presence of thromboembolism (TE), radiation therapy, and metastatic sites were also analyzed. The associations with overall survival were examined with time-dependent Cox proportional hazards regression analyses. RESULTS: A multivariate model revealed that higher MPS scores at diagnosis (hazard ratio for MPS of 2 vs MPS of 0, 1.41; 95% confidence interval, 1.13-1.76), liver metastases, radiation therapy, hospital admissions, TE, and performance status were associated with worse overall survival. The median overall survival for patients with MPS scores of 0, 1, and 2 were 12.9, 9.0, and 5.4 months, respectively. CONCLUSIONS: The MPS, an easily calculated composite of the NLR and albumin, is an objective tool that may predict survival in mPDAC independently of the performance status, disease characteristics, and cancer therapy.

Automated summary

The Memorial Sloan Kettering Prognostic Score (MPS), consisting of the neutrophil-lymphocyte ratio (NLR) and albumin levels, is a predictive tool for survival in patients with metastatic pancreatic adenocarcinoma (mPDAC) regardless of performance status, disease characteristics, and cancer therapy. Higher MPS scores, liver metastases, radiation therapy, hospital admissions, thromboembolism, and performance status were associated with worse overall survival in this study.