Critical Illness Immunological Reprogramming and Control Point Learning Engine (CIRCLE) Innovative Solutions Opening (ISO)

SOL #: ARPA-H-SOL-26-139Solicitation

Overview

Buyer

Health And Human Services
National Institutes Of Health
ADVANCED RESEARCH PROJECTS AGENCY FOR HEALTH (ARPA-H)
Washington, DC, 20005, United States

Place of Performance

Place of performance not available

NAICS

Research and Development in the Physical (541715)

PSC

Health R&D Services; Health Care Services; Experimental Development (AN13)

Set Aside

No set aside specified

Timeline

1
Posted
Feb 13, 2026
2
Last Updated
May 26, 2026
3
Submission Deadline
May 28, 2026, 5:00 PM

Qualification Details

Fit reasons
  • NAICS alignment with historical contract wins in similar service areas.
  • Scope strongly matches core technical capabilities and delivery model.
Risks
  • Past performance thresholds may require one additional teaming partner.
  • Potential clarification needed on staffing minimums before bid/no-bid.
Next steps

Validate eligibility requirements, assign capture owner, and schedule partner outreach to confirm teaming strategy before submission planning.

Quick Summary

The Advanced Research Projects Agency for Health (ARPA-H) has issued an Innovative Solutions Opening (ISO) for the Critical Illness Immunological Reprogramming and Control Point Learning Engine (CIRCLE) program. This initiative seeks to improve intensive care unit (ICU) health outcomes by developing a system to assess, predict, and treat immuno-inflammatory dysregulation before it causes organ failure. ARPA-H anticipates awarding multiple Other Transaction (OT) Agreements.

Program Overview

The CIRCLE program aims to create a Control Point Validation Engine to reduce ICU stay time and associated costs. It is structured around three Technical Areas (TAs) and three Acceleration Platforms (APs):

  • TA1: Measure - Dynamic Immune Descriptor: Develop real-time, tissue-specific immuno-inflammation biomarker sensors and diagnostics.
  • TA2: Model - Digital Twin Generator: Create personalized computational models to predict critical illness trajectories and identify control points.
  • TA3: Modulate - Rational Immune Reprogrammer: Develop and test interventions to modulate immune responses.
  • Acceleration Platforms (APs): Provide independent verification, validation, data analysis, FDA-compliant modeling platforms, and clinical trial support. The program is a 5-year, 3-phase effort.

Contract Details

  • Contract Type: Other Transaction (OT) Agreements.
  • Anticipated Awards: Multiple awards are expected.
  • Set-Aside: None specified. Universities, non-profit organizations, small businesses, and other than small businesses are eligible. Federally Funded Research and Development Centers (FFRDCs) and U.S. Government entities are not permitted as prime or sub-performers. Non-U.S. entities may participate if compliant with regulations.
  • Product/Service Code: AN13 (Health R&D Services; Health Care Services; Experimental Development).

Submission Requirements & Evaluation

Proposers must submit a solution summary prior to a full proposal. Proposals will be evaluated on Overall Scientific and Technical Merit, Proposer's Capabilities and/or Related Experience, Price/Value Analysis, and Relevance to the ARPA-H Mission. Key attachments provide detailed instructions for the Technical & Management Volume (Att B), Administrative & National Policy Requirements (Att F), and a mandatory Price/Cost Proposal Workbook (Att D) for Resource Sharing agreements. A commercialization strategy narrative is required for Type A proposals, and open-source technologies are encouraged.

Key Dates

  • Proposer's Day: March 11, 2026
  • Solution Summaries Due: March 30, 2026, 1 PM ET
  • Questions Due: May 22, 2026, 1 PM ET
  • Full Proposals Due: May 28, 2026, 1 PM ET

Amendments

This solicitation has been amended multiple times. The most recent, Amendment 4 (May 21, 2026), corrected the "Total Amount Sheet" in Attachment D (Price Cost Proposal Workbook) for Phase 2 and 3, and added Fee and Profit to the worksheet. Proposers should ensure they use the updated Attachment D.

Contact Information

For questions, contact ARPA-H RSO CIRCLE ISO Coordinator at CIRCLE@ARPA-H.gov.

People

Points of Contact

ARPA-H RSO CIRCLE ISO CoordinatorPRIMARY

Files

Files

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Versions

Version 6
Solicitation
Posted: May 26, 2026
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Version 5Viewing
Solicitation
Posted: May 21, 2026
Version 4
Solicitation
Posted: Apr 28, 2026
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Version 3
Solicitation
Posted: Mar 23, 2026
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Version 2
Solicitation
Posted: Feb 20, 2026
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Version 1
Solicitation
Posted: Feb 13, 2026
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Critical Illness Immunological Reprogramming and Control Point Learning Engine (CIRCLE) Innovative Solutions Opening (ISO) | GovScope