臨床知識を組み込んだAIが脊髄疾患予測で高性能を実証(Clinically Informed AI Outperforms Foundation Models in Spinal Cord Disease Prediction)

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2026-02-25 ワシントン大学セントルイス校

米ワシントン大学セントルイス校の研究チームは、脊髄疾患の予測において、医療知識を組み込んだ臨床特化型AIモデルが汎用基盤モデルを上回る性能を示すことを報告した。電子カルテなどの臨床データを活用し、専門医の知見を反映させた設計により、診断精度や予測能力が向上。ブラックボックス的な大規模モデルに比べ、解釈可能性や実用性も高いとされる。医療現場に即したAI開発の重要性を示す成果である。

臨床知識を組み込んだAIが脊髄疾患予測で高性能を実証(Clinically Informed AI Outperforms Foundation Models in Spinal Cord Disease Prediction)
A multidisciplinary team of surgeon-scientists, computer scientists and researchers developed an artificial intelligence-based approach that could help clinicians screen for and diagnose cervical spondylotic myelopathy up to 30 months earlier, opening new opportunities for earlier treatment. (Photo: iStock)

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Clinically-guided models or foundation models? predicting cervical spondylotic myelopathy from electronic health records

Salim Yakdan,Ben Warner,Zoher Ghogawala,Wilson Z. Ray,Mohamad Bydon,Michael P. Steinmetz,Richard T. Griffey,Randi Foraker,Adam Wilcox,Chenyang Lu & Jacob K. Greenberg
npj Digital Medicine  Published:20 January 2026
DOI:https://doi.org/10.1038/s41746-026-02337-7

Abstract

Cervical spondylotic myelopathy (CSM) is the leading cause of spinal cord dysfunction in older adults, yet diagnosis is frequently delayed due to insidious symptom onset and limited clinical recognition. We developed and externally validated machine learning models using structured electronic health record (EHR) data to predict incident CSM diagnoses up to 30 months in advance. Using data from ~2 million patients in the Merative™ MarketScan® claims database and our institutional EHR, we evaluated a spectrum of modeling strategies, ranging from simple, clinically guided architectures to large-scale pretrained foundation models. These included count-based feed-forward networks, a clinically curated Mamba state-space model, two mid-scale transformer models (CoreBEHRT and CEHRBERT), and large foundation models (clmbr-t-base and clmbr-t-5k-CSM). While large foundation models achieved an overall stronger performance during internal validation in the larger, more heterogeneous dataset, the clinically oriented models generalized more effectively in external validation across a separate health system. These findings underscore the promise of foundation models in capturing rich EHR representations yet highlight persistent challenges in their generalizability. In contrast, domain-informed models, despite their simplicity, may offer greater robustness across care settings.

医療・健康
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