Abstract
Background: Older patients with cancer require specific and individualized management. The Multidimensional Prognostic Index (MPI) based on the Comprehensive Geriatric Assessment (CGA) has shown a predictive interest in terms of mortality.Methods: From 2015 to 2017, consecutive patients ≥75 years old with cancer in Poitiers University Hospital referred to an oncogeriatric consultation. Patients underwent CGA with MPI that is categorized into three risk groups of mortality at one year.Results: Overall, 433 patients were included (women 42%; mean age 82.8±4.8 years). Most common tumor sites were prostate (23%), skin (17%), colorectum (15%) and breast (12%); 29% patients had a metastatic disease; 231 patients (53%) belonged to "MPI-1" group, 172 (40%) to "MPI-2" group and 30 patients (7%) were classified in "MPI-3" group. One-year mortality rate was 32% (23% in MPI-1, 41% in MPI-2 and 53% in MPI-3, p=0.024). All domains of MPI except cognition and living status were significantly associated with mortality at one-year, as well as tumor sites and metastatic status. Cox proportional hazard regression analysis, adjusted on age, gender, tumor sites and metastatic status, validated MPI as being associated with a higher mortality risk (p<0.0001). The prognostic value of MPI was confirmed by the area under the ROC curve at 0.826 (P <0.0001).Conclusion: Our study confirmed the predictive value of MPI for one-year mortality in older patients with cancer. This practical prognostic tool may help to optimize the management of these vulnerable patients.
Comprehensive geriatric assessment in older patients with cancer: an external validation of the multidimensional prognostic index in a French prospective cohort study