← Eichor
Study identifier: NCT05081024 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Establishing a ctDNA Biomarker to Improve Organ Preserving Strategies in Patients With Rectal Cancer

Condition: Rectal Adenocarcinoma · Stage II Rectal Cancer AJCC v8 · Stage IIA Rectal Cancer AJCC v8  ·  Sponsor: OHSU Knight Cancer Institute

PhaseN/A
Planned participants50
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

This study measures the levels of circulating tumor DNA (ctDNA) in patients with stage II-III rectal cancer before, during, and after treatment to find out if the presence or absence of ctDNA in patient's blood using the Signatera test can be used to gauge how different treatments may affect rectal cancer. ctDNA is DNA from the rectal cancer that is circulating in the blood. The purpose of this study is to understand if the way rectal tumors respond to standard treatment can be associated with varying levels of ctDNA.

This description comes directly from the study's public registry record.

Talk to the study team

Contact details are listed per location below or on the registry record.

Always discuss trial participation with your own doctor first.

Locations (2)

OHSU Knight Cancer InstitutePortland, Oregon, United StatesRecruiting
Fred HutchSeattle, Washington, United StatesRecruiting

Follow this study

Get one email when the public record changes — results posted, or the study's status changes. Nothing else, ever.

We email about this public record only. Unsubscribe anytime with one click. Never medical advice.

Is this your study? This page was generated automatically from the public registry record. Sponsors can claim it — free — to add branding and verified contact routing. Claim this page →

This page is independently generated by Eichor from the public ClinicalTrials.gov record and re-synced daily. It is not the sponsor's official website unless claimed. Nothing here is medical advice; eligibility is always determined by the study team — talk to your own doctor first.

Source record: clinicaltrials.gov/study/NCT05081024