Critical Illness Immunological Reprogramming and Control Point Learning Engine (CIRCLE) Innovative Solutions Opening (ISO)
Overview
Buyer
Place of Performance
NAICS
PSC
Set Aside
Original Source
Timeline
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.