Cited by 20AI in cancer detectionMachine Learning in HealthcareGene expression and cancer classification

Assessment of emerging pretraining strategies in interpretable multimodal deep learning for cancer prognostication

Open access
Azher, Zarif L., Suvarna, Anish, Chen, Ji-Qing, Zhang, Ze, Christensen, Brock C., Salas, Lucas A., Vaickus, Louis J., Levy, Joshua J.·2023·BioData Mining

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Abstract

BACKGROUND: Deep learning models can infer cancer patient prognosis from molecular and anatomic pathology information. Recent studies that leveraged information from complementary multimodal data improved prognostication, further illustrating the potential utility of such methods. However, current approaches: 1) do not comprehensively leverage biological and histomorphological relationships and 2) make use of emerging strategies to "pretrain" models (i.e., train models on a slightly orthogonal dataset/modeling objective) which may aid prognostication by reducing the amount of information required for achieving optimal performance. In addition, model interpretation is crucial for facilitating the clinical adoption of deep learning methods by fostering practitioner understanding and trust in the technology. METHODS: Here, we develop an interpretable multimodal modeling framework that combines DNA methylation, gene expression, and histopathology (i.e., tissue slides) data, and we compare performance of crossmodal pretraining, contrastive learning, and transfer learning versus the standard procedure. RESULTS: Our models outperform the existing state-of-the-art method (average 11.54% C-index increase), and baseline clinically driven models (average 11.7% C-index increase). Model interpretations elucidate consideration of biologically meaningful factors in making prognosis predictions. DISCUSSION: Our results demonstrate that the selection of pretraining strategies is crucial for obtaining highly accurate prognostication models, even more so than devising an innovative model architecture, and further emphasize the all-important role of the tumor microenvironment on disease progression.

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  1. [73]Benkirane H, Vakalopoulou M, Christodoulidis S, Garberis I-J, Michiels S, Cournède P-H. Hyper-AdaC: Adaptive clustering-based hypergraph representation of whole slide images for survival analysis. In: Proceedings of the 2nd Machine Learning for Health symposium. PMLR; 2022. p. 405–18.

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Authors
Azher, Z. L., Suvarna, A., Chen, J.-Q., Zhang, Z., Christensen, B. C., Salas, L. A., Vaickus, L. J., & Levy, J. J.
Affiliations
  • Dartmouth College (US)
  • Dartmouth–Hitchcock Medical Center (US)
Corresponding author
Levy, Joshua J.
Venue
BioData Mining
Published
2023-07-22
Volume
16
Issue
1
Pages
23-23
ISSN
1756-0381 (ISSN-L)
OpenAlex
W4385147142
Cited by
20
References
76
Citations by year
2026: 3 · 2025: 9 · 2024: 5 · 2023: 3
FWCI
1.89
Type
journal article
Language
en
Open access
Locations
  • BioData Mining (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Institutes of Health (P20GM104416)
Topics
  • Physical Sciences › Computer Science › Artificial Intelligence › AI in cancer detection
  • Physical Sciences › Computer Science › Artificial Intelligence › Machine Learning in Healthcare
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene expression and cancer classification
Keywords
multimodal deep learning, contrastive learning, transfer learning, DNA methylation, gene expression, histopathology, interpretable models, tumor microenvironment, model interpretability

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