SAGEAgent Reduces Diagnostic Burden in Multimodal Cancer Survival Prediction

Chongyu Qu, Can Cui, Zhengyi Lu, Junchao Zhu, Tianyuan Yao, Junlin Guo, Juming Xiong, Yanfan Zhu, Yuechen Yang, Bennett A. Landman, Yuankai Huo· July 13, 2026 View original

Summary

SAGEAgent is an LLM-based clinical agent that sequentially decides which diagnostic modalities to acquire for cancer patients, balancing predictive accuracy with clinical invasiveness. It uses clinical tools, episodic memory, and semantic memory to achieve competitive survival prediction while significantly reducing diagnostic burden.

This research introduces SAGEAgent, an innovative AI agent designed for multimodal clinical oncology. Its purpose is to optimize the diagnostic process for cancer patients by intelligently deciding which tests or "modalities" to acquire. Unlike traditional methods that assume all data is available or passively handle missing information, SAGEAgent actively reasons about the necessity of each subsequent diagnostic step, considering both its predictive value and the patient's burden. The agent leverages an LLM to process evolving patient states, translate numerical predictions into text, recall similar past cases from episodic memory, and accumulate decision patterns in semantic memory. Evaluated on a glioma cohort, SAGEAgent demonstrated comparable survival prediction accuracy while achieving a substantial 55% reduction in the average diagnostic burden. This approach addresses a critical challenge in clinical practice by making diagnostic workflows more efficient and patient-centric, potentially leading to faster, less invasive, and more cost-effective care.

Why it matters

This research offers a novel approach to optimizing diagnostic pathways in healthcare, potentially reducing patient burden and healthcare costs while maintaining predictive accuracy. Professionals in healthcare AI and clinical operations should note its potential for more efficient resource allocation.

How to implement this in your domain

  1. 1Evaluate existing diagnostic workflows for sequential decision points where AI could optimize modality acquisition.
  2. 2Pilot SAGEAgent-like frameworks in non-critical clinical settings to assess feasibility and gather initial data.
  3. 3Collaborate with AI researchers to adapt and integrate similar LLM-based agents into specific clinical domains.
  4. 4Develop robust data pipelines to feed real-time patient data into such decision-making agents.

Who benefits

HealthcarePharmaceuticalsMedical DevicesHealth Insurance

Key takeaways

  • SAGEAgent uses an LLM to make sequential decisions on diagnostic modality acquisition.
  • It balances predictive accuracy with the clinical invasiveness of diagnostic tests.
  • The agent achieved a 55% reduction in diagnostic burden while maintaining accuracy.
  • This approach could lead to more efficient and patient-friendly clinical workflows.

Original post by Chongyu Qu, Can Cui, Zhengyi Lu, Junchao Zhu, Tianyuan Yao, Junlin Guo, Juming Xiong, Yanfan Zhu, Yuechen Yang, Bennett A. Landman, Yuankai Huo

"arXiv:2607.09521v1 Announce Type: new Abstract: Does every cancer patient truly need a complete diagnostic workup for accurate survival prediction? In multimodal clinical oncology, diagnostic modalities follow a clinically mandated order of escalating burden -- from demographics…"

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Originally posted by Chongyu Qu, Can Cui, Zhengyi Lu, Junchao Zhu, Tianyuan Yao, Junlin Guo, Juming Xiong, Yanfan Zhu, Yuechen Yang, Bennett A. Landman, Yuankai Huo on X · view source

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