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Related Concept Videos

Clinical Trials: Overview01:11

Clinical Trials: Overview

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Clinical development focuses on how the drug will interact with the human body and encompasses four key phases of clinical trials, each serving a specific purpose in assessing the safety and effectiveness of new drugs. These phases overlap and build upon one another. Phase I involves a small group of healthy volunteers (typically 20-80 individuals) or, in cases where significant toxicity is expected, patients with the targeted disease, such as cancer or AIDS. The volunteers are tested for...
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Clinical Trials01:16

Clinical Trials

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Clinical trials are prospective experimental studies conducted on humans to determine the safety and efficacy of treatments, drugs, diet methods, and medical devices. Using statistics in clinical trials enables researchers to derive reasonable and accurate conclusions from the collected data, allowing them to make wise decisions in uncertain situations. In medical research, statistical methods are crucial for preventing errors and bias.
There are four phases in a clinical trial. A phase one...
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Blinding01:11

Blinding

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Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.
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Study Designs in Epidemiology01:20

Study Designs in Epidemiology

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Epidemiological study designs are fundamental tools for investigating the distribution, determinants, and control of health conditions in populations. They help researchers understand the relationships between exposures and outcomes, and they broadly fall into two categories: "observational" and "experimental" studies.
Observational studies are those where the researcher does not intervene but rather observes natural variations. They include cross-sectional, cohort, and...
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Hazard Ratio01:12

Hazard Ratio

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The hazard ratio (HR) is a widely used measure in clinical trials to compare the risk of events, such as death or disease recurrence, between two groups over time. It reflects the ratio of hazard rates—the instantaneous risk of the event occurring—between a treatment group and a control group. This measure provides valuable insights into the relative effectiveness of a treatment by assessing how the risk of an event differs between the two groups.
For example, in a clinical trial...
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Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches01:23

Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches

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Biopharmaceutical studies constitute a vital field aiming to enhance drug delivery methods and refine therapeutic approaches, drawing upon diverse interdisciplinary knowledge. In research methodologies, the choice between controlled and non-controlled studies significantly influences the study's reliability and accuracy.
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast,...
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STAR-TREC: An International Three-arm Multicentre, Partially Randomised Controlled Trial Incorporating an External

S P Bach1

  • 1Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK.

Clinical Oncology (Royal College of Radiologists (Great Britain))
|December 28, 2022
PubMed
Summary

Organ-saving treatments for early rectal cancer offer better quality of life than standard surgery. The STAR-TREC trial compares these approaches to find the optimal strategy for rectal cancer patients.

Keywords:
Long course chemoradiotherapyMesorectal radiotherapyOrgan preservationShort course radiotherapyTotal mesorectal excisionWatch and wait

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Area of Science:

  • Oncology
  • Surgical Oncology
  • Clinical Trials

Background:

  • Organ-saving treatments for early-stage rectal cancer may reduce side effects and improve quality of life compared to total mesorectal excision (TME).
  • Optimal strategies for organ preservation and long-term oncological outcomes in rectal cancer are not yet established, necessitating high-quality clinical trials.

Purpose of the Study:

  • To compare organ-preserving strategies (watchful waiting or transanal surgery post-chemoradiotherapy) with standard total mesorectal excision (TME) for early-stage rectal cancer.
  • To evaluate the efficacy and safety of different organ-saving approaches in rectal cancer treatment.
  • To determine the optimal management strategy balancing oncological outcomes and patient quality of life.

Main Methods:

  • The STAR-TREC trial is an international, multi-center, randomized controlled trial with an external pilot phase.
  • Patients with cT1-3b N0 rectal tumors (≤40mm) preferring organ preservation are randomized to chemoradiotherapy or short-course radiotherapy with transanal microsurgery.
  • Patients preferring radical surgery undergo TME. The primary outcome is organ preservation rate at 30 months.

Main Results:

  • The study aims to recruit 380 patients for organ preservation arms and 120 for TME.
  • Secondary outcomes include treatment toxicity, non-operative management rates, tumor control, disease-free survival, and overall survival.
  • Exploratory research will use circulating tumor DNA to predict treatment response and relapse.

Conclusions:

  • The STAR-TREC trial will prospectively evaluate contrasting therapeutic strategies for early-stage rectal cancer.
  • It will provide crucial data on organ preservation, treatment response, and patient-reported outcomes.
  • Findings will guide the routine management of patients with early-stage rectal cancer, aiming to improve outcomes and quality of life.