Patient Reminders Optimizing Mail-in Prevention Testing for Colorectal Cancer (PROMPT-CRC)

June 5, 2026 updated by: Laura Feemster

Screening is an important tool for early colorectal cancer detection, and the most recent evidence suggests that early detection significantly improves survival rates. Current medical guidelines recommend that all people aged 45 to 75 be screened regularly. However, actual rates of screening in the United States are much lower than this.

Colonoscopy is the gold standard in colon cancer screening, serving as both screening and prevention. However there are many barriers to colonoscopy uptake, including lack of awareness, patient reticence, scheduling complexity, and market variation in access. Stool testing is a valuable alternative to colonoscopy for low-risk patients. Exact Sciences is the company that makes Cologuard, which is the current best-in-class stool testing for colon cancer screening.

Despite being a convenient at-home screening option, patient engagement with screening via stool testing has room for improvement. Over 40% of Ascension patients who have a stool testing order placed for them never return the screening kit in the mail.

A large body of research demonstrates that interventions informed by behavioral science can support patients in engaging in a variety of preventative health behaviors. Personalized nudges have proven to be among the most effective types of interventions, along with interventions aimed at helping patients overcome barriers to screening. We aim to test whether behavioral nudges can increase stool testing kit return rates.

Study Overview

Status

Completed

Intervention / Treatment

Detailed Description

Screening is an important tool for early colorectal cancer detection, and the most recent evidence suggests that early detection significantly improves survival rates. Current medical guidelines recommend that all people aged 45 to 75 be screened regularly. However, actual rates of screening in the United States are much lower than this, particularly among younger patient cohorts. Screening rates are still lower for patients who are "socially vulnerable" - a measure of the degree to which social and demographic factors make them vulnerable to health disparities.

Colonoscopy is the gold standard in colon cancer screening, serving as both screening and prevention. However there are many barriers to colonoscopy uptake, including lack of awareness, patient reticence, scheduling complexity, and market variation in access. Stool testing is a valuable alternative to colonoscopy for low-risk patients. Exact Sciences is the company that makes Cologuard, which is the current best-in-class stool testing for colon cancer screening.

Despite being a convenient at-home screening option, patient engagement with screening via stool testing has room for improvement. Over 40% of Ascension patients who have a stool testing order placed for them never return the screening kit in the mail.

A large body of research demonstrates that interventions informed by behavioral science can support patients in engaging in a variety of preventative health behaviors. Personalized nudges have proven to be among the most effective types of interventions, along with interventions aimed at helping patients overcome barriers to screening.4 We aim to test whether behavioral nudges can increase stool testing kit return rates.

Study Type

Interventional

Enrollment (Actual)

2106

Phase

  • Not Applicable

Contacts and Locations

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

Study Locations

    • Missouri
      • St Louis, Missouri, United States, 63134
        • Ascension Health

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

Description

Inclusion Criteria:

  • Age 45-75
  • Have either a mobile phone number or an email address on file with the health system
  • Included in and non-compliant on the Ascension Colon Cancer Screening Clinical Priority Goal measure.
  • Have consented to receive electronic communications from the health system
  • Ascension primary care provider placed an order for stool testing between 60 and 180 days prior to the intervention.
  • No record of Cologuard stool testing lab results returned within 60 days of the order being placed.

Exclusion Criteria:

  • Patients whose primary care providers are exempted from the campaign by the health system
  • Patients with a record of having been screened for colorectal cancer through some other method during the time since the initial order for Cologuard stool testing was placed.
  • Have received a nudge campaign from the Clinical Transformation team in the past 90 days
  • Patients who have previously opted out of receiving electronic communications from the health system in our message delivery platform (Salesforce)

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

  • Primary Purpose: Screening
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Experimental Group
Group receiving the messages
Patients in the Experimental Condition will receive a set of up to three email and text messages over the course of five days, while also receiving usual care which could include messaging from their practice or the electronic health record.
No Intervention: Control Group
Group not receiving the messages

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Percentage kit return at 4 weeks
Time Frame: 4 weeks from date first message was sent
Percentage of patients who have Cologuard stool testing lab results returned 4 weeks after receiving the intervention
4 weeks from date first message was sent

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Percentage kit return at 8 weeks
Time Frame: 8 weeks from date first message was sent
Percentage of patients who have Cologuard stool testing lab results returned 8 weeks after receiving the intervention
8 weeks from date first message was sent
Percentage kit return at 12 weeks
Time Frame: 12 weeks from date first message was sent
Percentage of patients who have Cologuard stool testing lab results returned 12 weeks after receiving the intervention
12 weeks from date first message was sent

Collaborators and Investigators

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

Sponsor

Investigators

  • Principal Investigator: Laura Feemster, MD MS, Ascension Health

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 (Actual)

December 5, 2024

Primary Completion (Actual)

January 2, 2025

Study Completion (Actual)

February 26, 2025

Study Registration Dates

First Submitted

November 26, 2024

First Submitted That Met QC Criteria

November 26, 2024

First Posted (Actual)

November 29, 2024

Study Record Updates

Last Update Posted (Actual)

June 8, 2026

Last Update Submitted That Met QC Criteria

June 5, 2026

Last Verified

June 1, 2026

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

Has patient information that we are not approved to share

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

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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