Ataraxis Real-World Clinical Outcomes Registry Linking AI-Based Pathology Scores to Patient Outcomes (ARC)

July 10, 2026 updated by: Ataraxis AI, Inc.

Ataraxis Real-World Clinical Outcomes: A Prospective, Multi-Site, Observational Registry Linking AI-Based Pathology Scores With Short- and Long-Term Outcomes

The ARC Registry is a large-scale, multi-site, prospective, observational registry. All patients with a solid tumor malignancy who receive Ataraxis testing as part of routine clinical care are eligible for enrollment, which will link Ataraxis test results with short- and long-term patient outcomes to evaluate the real-world performance and clinical utility of Ataraxis tests. The ARC Registry utilizes an adaptable design, where additional Sponsor-led analyses and investigator-initiated ancillary studies can be added after the initial study is opened.

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Detailed Description

The Ataraxis Real-World Clinical Outcomes (ARC) registry is a prospective, multi-site, non-interventional, observational registry designed to capture short- and long-term clinical outcomes of patients who undergo Ataraxis testing as part of routine clinical care. Ataraxis tests generate prognostic and predictive scores from digitized hematoxylin and eosin (H&E)-stained pathology slides and baseline clinical variables. Treatment is at the discretion of the treating physician in accordance with standard of care, and participation in the registry does not change or influence treatment selection.

Following enrollment, clinical data will be collected at multiple time points for up to 10 years. Data will be captured in Ataraxis AI's Portal.

Enrollment is planned over approximately two years, with follow-up extending up to 10 years per participant. Approximately 1,000 participants will be enrolled across participating U.S. sites.

Objectives:

  • Establish a large-scale, multi-site registry of patients receiving Ataraxis tests, linking test results with short- and long-term clinical outcomes to evaluate their real-world prognostic and predictive performance and clinical utility
  • Evaluate the performance and clinical utility of Ataraxis tests across diverse patient populations, including molecular subtypes, treatment regimens, and demographic and geographic strata
  • Leverage the adaptable registry infrastructure to support downstream independent research by contributing site-investigators

Study Type

Observational

Enrollment (Estimated)

1000

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Study population will include adults (≥18 years) with a histologically or cytologically confirmed solid tumor malignancy who undergo Ataraxis testing as part of routine clinical care and have signed an informed consent. Patients will be excluded if an Ataraxis test result is not successfully generated.

Description

Inclusion Criteria:

  • Aged 18 years or older at the time of consent.
  • Diagnosis of a solid tumor malignancy, confirmed histologically or cytologically.
  • Patient is undergoing Ataraxis testing as part of their routine clinical care.
  • Availability of a pathology specimen.
  • Willing and able to provide written informed consent.

Exclusion Criteria:

  • Unable or unwilling to provide informed consent.
  • Patient for whom an Ataraxis test result was not successfully generated (e.g., due to sample quality, technical failure, or any reason resulting in a non-reportable result).

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Ataraxis testing
Adult patients with a solid tumor malignancy undergoing Ataraxis testing as part of routine clinical care. Treatment will be at the discretion of the physician.
Diagnostic test: Ataraxis testing
Ataraxis AI's digital pathology-based artificial intelligence (AI) testing, ordered as part of routine clinical care.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
A large-scale, multi-site registry linking Ataraxis test results with short- and long-term clinical outcomes
Time Frame: 10 years
Establish a prospective, multi-site registry of patients receiving Ataraxis tests, linking results with clinical outcomes to evaluate the real-world prognostic and predictive performance and clinical utility of Ataraxis tests.
10 years

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Performance and clinical utility of Ataraxis tests across diverse patient populations
Time Frame: 10 years
Evaluate the performance and clinical utility of Ataraxis tests across diverse patient populations, including across molecular subtypes, treatment regimens, and demographic and geographic strata, in real-world clinical practice.
10 years
Shared registry infrastructure supporting downstream independent research
Time Frame: 10 years
Leverage the shared registry infrastructure to support downstream independent research by contributing site-investigators.
10 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Ataraxis AI, Inc.

Investigators

  • Study Director: Jan Witowski, MD, PhD, Ataraxis AI

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

July 31, 2026

Primary Completion (Estimated)

August 1, 2038

Study Completion (Estimated)

December 1, 2038

Study Registration Dates

First Submitted

July 10, 2026

First Submitted That Met QC Criteria

July 10, 2026

First Posted (Actual)

July 16, 2026

Study Record Updates

Last Update Posted (Actual)

July 16, 2026

Last Update Submitted That Met QC Criteria

July 10, 2026

Last Verified

July 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Pro00095260

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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