The introduction of mild cognitive impairment (MCI) as a diagnostic category adds to the challenges of diagnosing Alzheimer's Disease (AD). No single marker has been proven to accurately categorize patients into their respective diagnostic groups. Thus, previous studies have attempted to develop fused predictors of AD and MCI. These studies have two main limitations. Most do not simultaneously consider all diagnostic categories and provide suboptimal fused representations using the same set of modalities for prediction of all classes. In this work, we present a combined framework, cascaded multiview canonical correlation (CaMCCo), for fusion and cascaded classification that incorporates all diagnostic categories and optimizes classification by selectively combining a subset of modalities at each level of the cascade. CaMCCo is evaluated on a data cohort comprising 149 patients for whom neurophysiological, neuroimaging, proteomic and genomic data were available. Results suggest that fusion of select modalities for each classification task outperforms (mean AUC = 0.92) fusion of all modalities (mean AUC = 0.54) and individual modalities (mean AUC = 0.90, 0.53, 0.71, 0.73, 0.62, 0.68). In addition, CaMCCo outperforms all other multi-class classification methods for MCI prediction (PPV: 0.80 vs. 0.67, 0.63).
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Research reported in this publication was supported by the National Cancer Institute of the National Institutes of Health under award numbers 1U24CA199374-01, R01CA202752-01A1, R01CA208236-01A1, R21CA179327-01, R21CA195152-01, the National Institute of Diabetes and Digestive and Kidney Diseases under award number R01DK098503-02, National Center for Research Resources under award number 1 C06 RR12463-01, the DOD Prostate Cancer Synergistic Idea Development Award (PC120857); the DOD Lung Cancer Idea Development New Investigator Award (LC130463), the DOD Prostate Cancer Idea Development Award, the DOD Peer Reviewed Cancer Research Program W81XWH-16-1-0329; the Case Comprehensive Cancer Center Pilot Grant VelaSano Grant from the Cleveland Clinic the Wallace H. Coulter Foundation Program in the Department of Biomedical Engineering at Case Western Reserve University.
Due to the large number of funding sources, only the first few are listed in this section. For the complete list of funding sources, please download this article.
Supplementary information accompanies this paper at doi: 10.1038/s41598-017-03925-0
Singanamalli, Asha; Wang, Haibo; Madabhushi, Anant; Weiner, Michael; Aisen, Paul; Petersen, Ronald; Jack, Clifford; Jagust, William; Trojanowki, John; Toga, Arthur; Beckett, Laurel; Green, Robert; Saykin, Andrew; Morris, John; Shaw, Leslie; Kaye, Jeffrey; Quinn, Joseph; Silbert, Lisa; Lind, Betty; Carter, Raina; Dolen, Sara; Schneider, Lon; Pawluczyk, Sonia; Beccera, Mauricio; Teodoro, Liberty; Spann, Bryan; Brewer, James; Vanderswag, Helen; Fleisher, Adam; Heidebrink, Judith; Smith, Charles; Jicha, Greg A.; Hardy, Peter A.; Sinha, Partha; Oates, Elizabeth; and Conrad, Gary, "Cascaded Multi-View Canonical Correlation (CaMCCo) for Early Diagnosis of Alzheimer's Disease via Fusion of Clinical, Imaging and Omic Features" (2017). Neurology Faculty Publications. 17.