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Clinical Research Directory

Browse clinical research sites, groups, and studies.

6 clinical studies listed.

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Cancer of Rectum

Tundra lists 6 Cancer of Rectum clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

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RECRUITING

NCT04095299

Standard Dose Versus High Dose of Radiotherapy in Rectal Preservation With Chemo-radiotherapy in Rectal Cancer Patients

In recent years, an increasing number of retrospective and prospective observational studies have indicated that a subset of rectal cancer patients may avoid surgery if they can achieve a complete response to chemoradiotherapy. Prospective trials, including the previous Danish Watchful Waiting trials (NCT00952926, NCT02438839) in early rectal cancer have demonstrated high levels of organ preservation with dose-escalation, but it is unclear whether this was primarily due to tumor stage or dose level. The aim of the present study is to investigate if a higher dose of radiotherapy is superior compared to a standard dose in patients with early rectal cancer undergoing chemoradiotherapy with curative intent.

Gender: All

Ages: 18 Years - Any

Updated: 2026-01-08

Cancer of Rectum
RECRUITING

NCT03452774

SYNERGY-AI: Artificial Intelligence Based Precision Oncology Clinical Trial Matching and Registry

International registry for cancer patients evaluating the feasibility and clinical utility of an Artificial Intelligence-based precision oncology clinical trial matching tool, powered by a virtual tumor boards (VTB) program, and its clinical impact on pts with advanced cancer to facilitate clinical trial enrollment (CTE), as well as the financial impact, and potential outcomes of the intervention.

Gender: All

Updated: 2025-10-28

40 states

Cancer, Metastatic
Cancer
Cancer of Pancreas
+40
RECRUITING

NCT05732389

Immunotherapy in Patients With Early dMMR Rectal Cancer

The purpose of this investigator-initiated, multicenter phase II trial is to evaluate the efficacy and tolerability of nivolumab and ipilimumab in patients with stage 1-3 MSI/dMMR rectal cancer. The primary objective is: Number of patients with complete clinical response after one or two cycles of immunotherapy. Patients will be treated with 1 or 2 cycles of combination immunotherapy: Cycle 1: Nivolumab 3 mg/kg days 1 and 15 \& ipilimumab 1 mg/kg day 1 Cycle 2: Nivolumab 3 mg/kg days 50 and 65 \& ipilimumab 1 mg/kg day 50

Gender: All

Ages: 18 Years - Any

Updated: 2025-08-07

Cancer of Rectum
ACTIVE NOT RECRUITING

NCT05179824

Tempus Priority Study: A Pan-tumor Observational Study

Observational study that will be collecting clinical and molecular health information from cancer patients who have received comprehensive genomic profiling and meet the specific eligibility criteria outlined for each cohort with the goal of conducting research to advance cancer care and create a dataset that furthers cancer research.

Gender: All

Updated: 2025-05-06

1 state

Breast Cancer
Prostate Cancer
Bladder Cancer
+24
ACTIVE NOT RECRUITING

NCT06940778

LIQUID BIOPSY FOCUSING ON CIRCULATING TUMOR CELLS AND CIRCULATING TUMOR DNA AS PRECISION MEDICINE IN GASTROINTESTINAL TUMORS

This is a prospective, observational, multicenter cohort study. Our main objective is to to evaluate the use of CTCs and ctDNA with prognostic factors in locally advanced rectal tumors treated with total neoadjuvant therapy (TNT), recently adopted as clinical practice, and to analyze the functionality of CTCs and ctDNA in the follow-up of locally advanced and metastatic pancreatic and gastric tumors. Secondary objectives: * To verify the influence of CTC and ctDNA kinetics on the response to treatment of the three tumors; * To correlate RAD23B/TYMS findings and CTC kinetics with DFS in locally advanced rectal tumors; * To correlate HER-2 and PDL-1 expression in CTCs in gastric cancer with progression-free and overall survival; * To verify the correlation between EGFR methylation in ctDNA of metastatic gastric tumors and PFS and OS; * Correlate KRAS mutations in ctDNA in locally advanced pancreatic and rectal cancer with progression-free and overall survival; * Compare the mutational profile of the primary tumor with that of the main components of the liquid biopsy (CTCs and ctDNA), in the three disease scenarios.

Gender: All

Ages: 18 Years - 80 Years

Updated: 2025-04-27

1 state

Cancer of Rectum
Cancer of Pancreas
Cancer of Stomach
RECRUITING

NCT03573791

Biomarkers for Predicting Neoadjuvant Chemoradio-resistance for Middle-low Advanced Rectal Cancer

Neoadjuvant therapy has been widely applied to locally advanced rectal cancer. However, about 50% of patients receiving this therapy do not respond well as evidenced by the fact that their T or N stages are not effectively decreased judged by postoperative pathological examination. The purpose of this trail is to identify the biomarkers (from within patients' tumor mass before neoadjuvant therapy) to predict resistance to neoadjuvant therapy. These biomarkers can help stratify neoadjuvant-resistant patients towards surgery while avoiding unnecessary chemoradio-based neoadjuvant therapy.

Gender: All

Ages: 18 Years - 75 Years

Updated: 2025-03-30

1 state

Rectal Cancer
Cancer of Rectum
Cancer of the Rectum
+4