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A Bayesian Disease Progression Model for Clinical Trajectories

  • Yingying Zhu
  • Mert R. Sabuncu
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11044)

Abstract

In this work, we consider the problem of predicting the course of a progressive disease, such as cancer or Alzheimer’s. Progressive diseases often start with mild symptoms that might precede a diagnosis, and each patient follows their own trajectory. Patient trajectories exhibit wild variability, which can be associated with many factors such as genotype, age, or sex. An additional layer of complexity is that, in real life, the amount and type of data available for each patient can differ significantly. For example, for one patient we might have no prior history, whereas for another patient we might have detailed clinical assessments obtained at multiple prior time-points. This paper presents a probabilistic model that can handle multiple modalities (including images and clinical assessments) and variable patient histories with irregular timings and missing entries, to predict clinical scores at future time-points. We use a sigmoidal function to model latent disease progression, which gives rise to clinical observations in our generative model. We implemented an approximate Bayesian inference strategy on the proposed model to estimate the parameters on data from a large population of subjects. Furthermore, the Bayesian framework enables the model to automatically fine-tune its predictions based on historical observations that might be available on the test subject. We applied our method to a longitudinal Alzheimer’s disease dataset with more than 3,000 subjects [1] with comparisons against several benchmarks.

Notes

Acknowledgements

This work was supported by NIH grants R01LM012719, R01AG053949, and 1R21AG050122, and the NSF NeuroNex grant 1707312. We used data from Tadpole 2017 Challenge (https://tadpole.grand-challenge.org/home/).

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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  1. 1.Schools of ECE and BMECornell UniversityIthacaUSA

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