Rectal Cancer Stage I Clinical Trials

24 recruitingLast updated: June 19, 2026

There are 24 actively recruiting rectal cancer stage i clinical trials across 18 countries. Studies span Phase 2, Not Applicable, Phase 3, Early Phase 1, Phase 1, Phase 4. Top locations include Barcelona, Spain, Madrid, Spain, Brussels, Belgium. Updated daily from ClinicalTrials.gov.


Rectal Cancer Stage I Trials at a Glance

24 actively recruiting trials for rectal cancer stage i are listed on ClinicalTrialsFinder across 6 cities in 18 countries. The largest study group is Phase 2 with 7 trials, with the heaviest enrollment activity in Barcelona, Madrid, and Brussels. Lead sponsors running rectal cancer stage i studies include City of Hope Medical Center, Biogenea Pharmaceuticals Ltd., and BioNTech SE.

Browse rectal cancer stage i trials by phase

Treatments under study

About Rectal Cancer Stage I Clinical Trials

Looking for clinical trials for Rectal Cancer Stage I? There are currently 1 studies actively recruiting participants. Clinical trials offer access to new treatments before they are widely available, and every approved therapy in use today was first tested through a clinical trial.

Below you can browse trials, sign up for alerts when new Rectal Cancer Stage I trials open, and view eligibility criteria for each study. Each listing includes the study phase, locations, and enrollment details.

Frequently Asked Questions

Common questions about Rectal Cancer Stage I clinical trials

A clinical trial is a carefully designed research study that tests new medical treatments, drugs, devices, or approaches in human volunteers. Every approved medication and treatment available today was proven safe and effective through clinical trials.

All clinical trials are reviewed and approved by Institutional Review Boards (IRBs) — independent committees that evaluate patient safety. Trials follow strict protocols, and your health is monitored closely throughout. You can withdraw at any time.

Not necessarily. Many trials compare the new treatment against the current standard of care, meaning all participants receive active treatment. When placebos are used, they are typically combined with standard treatment, not given alone. The trial description will always specify the design.

Under the Affordable Care Act, most private insurers are required to cover routine patient care costs during a clinical trial. The sponsor typically covers the investigational treatment itself. Medicare also covers routine costs for qualifying trials.

Yes. Participation is completely voluntary. You can withdraw at any time, for any reason, without it affecting your access to standard medical care.

Each trial has specific eligibility criteria — including age, diagnosis, disease stage, prior treatments, and general health. Browse the trials listed above and check their eligibility sections. You can also contact the trial site directly to discuss your situation.

Showing 120 of 24 trials

Recruiting

Early Detection of Advanced Adenomas and Colorectal Cancer

Colorectal, CancerColorectal NeoplasmsColorectal Adenocarcinoma+15 more
City of Hope Medical Center2,000 enrolled6 locationsNCT06342440
Recruiting
Phase 2

Hydroxychloroquine in Combination With Encorafenib and Cetuximab or Panitumumab in the Treatment of Metastatic BRAF-mutated Colorectal Cancer Refractory

Colorectal, CancerColorectal Cancer Stage IVStage IV Colorectal Cancer Positive for BRAF V600E Mutation
Northwestern University43 enrolled8 locationsNCT05576896
Recruiting
Phase 2

Clinical Trial of Neoadjuvant mFOLFOX Plus Alvenor for LARC Patients With High YWHAB Expression

Rectal Cancer Stage IIRectal Cancer Stage IIIRectal Cancer Patients
Sixth Affiliated Hospital, Sun Yat-sen University236 enrolled1 locationNCT07176182
Recruiting
Phase 1Phase 2

Cadonilimab for PD-1/PD-L1 Blockade-refractory, MSI-H/dMMR, Advanced Colorectal Cancer

Colorectal Cancer Stage IVMismatch Repair-deficient (dMMR)Microsatellite Instability-high (MSI-H)
Sun Yat-sen University28 enrolled1 locationNCT05426005
Recruiting
Not Applicable

Effect of Meal Timing During Cancer Treatment in Patients in Alaska: A Randomized Clinical Trial

Breast Cancer Stage IBreast Cancer Stage IIBreast Cancer Stage III+4 more
Fred Hutchinson Cancer Center100 enrolled1 locationNCT06802172
Recruiting

GUIDE.MRD-01-CRC: Clinical Validation and Benchmarking of Top Performing ctDNA Diagnostics - Colorectal Cancer

Liver Metastasis Colon CancerColorectal Cancer Stage III
Claus Lindbjerg Andersen590 enrolled15 locationsNCT06111105
Recruiting
Phase 2

A Phase II Clinical Trial Comparing the Efficacy of RO7198457 Versus Watchful Waiting in Patients With ctDNA-positive, Resected Stage II (High Risk) and Stage III Colorectal Cancer

Colorectal Cancer Stage IIIColorectal Cancer Stage II
BioNTech SE327 enrolled121 locationsNCT04486378
Recruiting
Phase 3

Evaluating Whether an Educational Website Called Current Together After Cancer (CTAC) Improves Follow-up Care for Colorectal Cancer Survivors

Colorectal Cancer Stage IIIColorectal Cancer Stage II
SWOG Cancer Research Network1,057 enrolled384 locationsNCT07018869
Recruiting
Not Applicable

Virtual Rehabilitation for Cancer Survivors

Breast Cancer Stage IBreast Cancer Stage IIBreast Cancer Stage III+9 more
University Health Network, Toronto388 enrolled1 locationNCT05898789
Recruiting

DANISH.MRD: Danish Assessment of Minimal Residual Disease by Liquid Biopsies

Colorectal, CancerColorectal NeoplasmsColorectal Adenocarcinoma+3 more
University of Aarhus1,600 enrolled10 locationsNCT06076811
Recruiting

Early Onset Colorectal Cancer Detection

Colorectal, CancerColorectal NeoplasmsColorectal Adenocarcinoma+5 more
City of Hope Medical Center400 enrolled13 locationsNCT06342401
Recruiting
Early Phase 1

COLONYVAQ™, a Quantum-Classical Guided Personalized Neoantigen Vaccine for MSS Stage III Colorectal Cancer

Colorectal Cancer MetastaticColorectal Cancer Stage IIIColorectal Cancer Stage IV
Biogenea Pharmaceuticals Ltd.12 enrolled1 locationNCT07328087
Recruiting
Not Applicable

The Impact of PReOPerative Exercise and NutritionaL Optimization on Perioperative Outcomes for Patients Undergoing Treatment for Rectal Cancer: The PROPEL Trial

Colorectal, CancerRectal CancerRectal Cancer Stage II+1 more
Dana-Farber Cancer Institute40 enrolled2 locationsNCT06565052
Recruiting

Splicing-based Predictive Learning for Individual Chemotherapy Evaluation in Colorectal Cancer

Colorectal, CancerColorectal Cancer RecurrentColorectal Cancer Stage III+1 more
City of Hope Medical Center200 enrolled1 locationNCT07226115
Recruiting

Stage II/III Colorectal Cancer Recurrence

Colorectal, CancerColorectal AdenocarcinomaColorectal Cancer Recurrent+2 more
City of Hope Medical Center400 enrolled4 locationsNCT06314958
Recruiting
Early Phase 1

A Dose-Expansion Trial of Intravenous HNF4α srRNA for Unresectable or Metastatic Colorectal Cancer

Colorectal Cancer MetastaticColorectal Cancer RecurrentColorectal Cancer Stage IV
Shanghai Changzheng Hospital20 enrolled1 locationNCT07050394
Recruiting
Phase 2

Tumor Local Excision +Postoperative Adjuvant Chemoradiotherapy for T1-2N0M0 Low/Ultra-Low Rectal Cancer

Rectal Cancer Stage I
Hebei Medical University Fourth Hospital60 enrolled1 locationNCT06949098
Recruiting

A Translational Study for Locoregional Recurrence of T4 Colon Cancer

Colorectal Cancer Stage IIIT4 Colorectal CancerColorectal Cancer Stage II
National Taiwan University Hospital60 enrolled1 locationNCT06958926
Recruiting
Phase 3

Bovine Reinforcement in Stomach, Colorectal and Lung Operation

Rectal Cancer Stage IIILung Cancer Stage III
Shanghai Cingularbio Co. Ltd172 enrolled1 locationNCT06968221
Recruiting
Phase 2

Neoadjuvant Regorafenib in Combination with Nivolumab and Short-course Radiotherapy in Stage II-III Rectal Cancer

Rectal Cancer Stage IIRectal Cancer Stage III
Jules Bordet Institute72 enrolled10 locationsNCT04503694