What happened
Geneoscopy of St. Louis, Missouri, makes ColoSense, a stool test for colorectal cancer screening that patients collect at home. A model combines eight RNA biomarkers, a fecal immunochemical test and smoking status into one result. It was developed with five-fold cross-validation on a training set of 939 and tested on a hold-out set of 388. In the decentralized CRC-PREVENT study, participants from 48 US states mailed a stool sample and then had a colonoscopy. FDA reviewers report that among 7,763 average-risk adults, the test detected 25 of 27 cancers. Sensitivity was 92.6% for cancer and 41.3% for advanced precancerous lesions, with 85.6% specificity. Its FIT component alone detected 77.8% of the cancers. FDA approved the test on 3 May 2024. The reviewers write that with only 27 cancers in the study, as many as 24.3% of cancers could be missed.
Sources
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Regulatory document, by authors with no tie to the system.
The ColoSense test had a CRC sensitivity of 92.6% (25/27, 2-sided 95% CI: 76-99%) and APL (AA/SPL) sensitivity of 41.3% (253/612). The AA sensitivity was 44.9% (231/514) and SPL sensitivity was 22.4% (22/98). The specificity in the non-NAPL or NEG group was 85.6% (2-sided 95% CI: 85%-86%).
Details
AI system
- Workflow
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Participants collected stool at home with the ColoSense Collection Kit and mailed it to a single laboratory. Laboratory technicians ran the test blinded to colonoscopy results.
Follow-up
- Conditions for replication
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The adult is 45 or older and at average risk for colorectal cancer. A positive result is followed by colonoscopy.
Entry details
- Sector
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Healthcare.
- Purpose
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Geneoscopy built ColoSense to screen adults aged 45 and over at average risk for colorectal cancer with a stool test that detects cancer and advanced precancerous lesions.
Not yet checked: model, release, provider, role, configuration, inputs and outputs, autonomy, human oversight, beneficiaries, reach, distribution and access, duration, every measurement question, every money question, ownership and control, dependencies, cross-border connections, geopolitical implications, replication attempts, availability, institutional decision, grounds, action and result, success criterion, every evidence question, observed or intended, alternative assessments, related entries, other identifiers, category mappings.
Cite this record
Peter H. Vartanian. (2026). ColoSense stool RNA test found 25 of 27 colorectal cancers (AIBD-0814). Artificial Intelligence Benefits Database, edition of 31 October 2026. https://petervartanian.xyz/aibd/records/AIBD-0814.html (archived at https://doi.org/10.7910/DVN/AADSII, version 4.0)