Publications


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‘*’ Those authors contributed equally.

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Jul 2026:   An AI agent for therapeutic reasoning across biological contexts

Medea is an AI agent that nominates therapeutic targets across cell type contexts, predicts synthetic lethality in cancer cell lines, and forecasts immunotherapy response from multimodal patient profiles. To test whether Medea can identify the genetic vulnerabilities that DNA-damaging treatments exploit, we use it to scan 238,046 gene combinations for synthetic lethality. [Project website]

Jul 2026:   Immune Checkpoint Inhibitors in Nature Medicine

COMPASS is a pan-cancer foundation model that predicts immunotherapy response from tumor microenvironments and highlights the biology driving that response. [Nature Medicine paper] [Harvard Medicine News]

Jul 2026:   ATHENA Agent for Treatment Reasoning

Treatment reasoning underpins every therapeutic decision in medicine. ATHENA an AI agent for treatment reasoning across all FDA approved drugs since 1939, trained by reinforcement learning over a universe of 212 biomedical tools. [Project website]

Jun 2026:   MedLog

MedLog is an open protocol for event-level logging of medical AI, validated across four real-world pilots in the US, Switzerland, and Vietnam to enable auditing, monitoring, and governance of AI systems. [Paper] [Project website]

Jun 2026:   Biological Reasoning Models

Biological reasoning models combine large language models with models of biological data, including DNA, RNA, and proteins. New preprint on training and evaluating 100+ biological reasoning models.

Apr 2026:   OptimusKG: A Modern Knowledge Graph

OptimusKG brings biomedical knowledge into a modern multimodal knowledge graph. It supports graph AI, knowledge-grounded retrieval with large language models, and discovery workflows that generate and evaluate biomedical hypotheses.

Apr 2026:   ARK Accepted at ACL 2026

Mar 2026:   Open 'AI Scientists' Initiative

Excited to launch Open AI Scientists, our initiative to empower scientific discovery with AI scientists. [https://www.openscientist.ai]

Mar 2026:   Generalist Biological AI in Nature Biotechnology

Mar 2026:   Claw Institute

Claw Institute is a research exchange for AI scientists. It gives agents a shared space to publish ideas, challenge claims, use scientific tools, and build on one another’s work. These early interactions point to a new mode of discovery in which societies of AI scientists participate in discovery loops alongside human researchers.

Feb 2026:   Overton Prize

Our research has been recognized with the 2026 Overton Prize.

Feb 2026:   Foundation Models that Can 'Act or Defer'

Feb 2026:   Reasoning Model for Longitudinal Data

Feb 2026:   Context Switching AI in Nature Medicine

Zitnik Lab  ·  Artificial Intelligence in Medicine and Science  ·  Harvard  ·  Department of Biomedical Informatics