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Clinical Trials

Clinical Trials

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...

Clinical Trials: Overview

Clinical Trials: Overview

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...

Nurses' Legal Responsibilities I

Nurses' Legal Responsibilities I

In healthcare, informed consent is a crucial process that involves thoroughly communicating medical treatment options to patients, including benefits, risks, potential side effects, and alternatives. This process enables patients to make well-informed decisions about their care, ensuring they understand the implications of their choices before consenting to or refusing treatment.
The legal responsibilities of a nurse regarding informed consent include the following:

Preclinical Development: Overview

Preclinical Development: Overview

Preclinical development consists of a series of tests that ensure the safety and efficacy of a new therapeutic compound before it is tested in humans. There are four main phases to this process. First, safety pharmacology tests are conducted to ensure the drug does not produce any acutely harmful effects. These tests examine parameters such as bronchoconstriction, cardiac dysrhythmias, blood pressure changes, and ataxia. Next, preliminary toxicological testing is performed to determine the...

Nursing Ethical Principles II

Nursing Ethical Principles II

Ethical principles are essential in guiding nurses to fulfill their responsibilities, focusing on the quality of nursing care and decision-making. These principles, including autonomy, beneficence, non-maleficence, justice, and fidelity, shape the ethical framework within healthcare settings.
Consider the following scenario, which illustrates how these principles are applied in the care of Mr. John, a fifty-year-old teacher diagnosed with metastatic liver cancer.
Initially, Mr. John's cancer...

Drug Administration and Therapy Phases: Overview

Drug Administration and Therapy Phases: Overview

Drugs, the chemical agents used in diagnosing, treating, or preventing diseases, undergo a four-phase process of development: pharmaceutic, pharmacokinetics, pharmacodynamics, and therapeutic.
The pharmaceutical phase focuses on leveraging the physicochemical properties of the drug to design and manufacture an effective product. Variants include orally administered tablets or capsules, topical creams or ointments, and parenteral-delivery solutions or emulsions.
The pharmacokinetic phase...

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Related Experiment Video

Updated: May 16, 2026

Working with Human Tissues for Translational Cancer Research

Working with Human Tissues for Translational Cancer Research

Published on: November 26, 2015

Phase 1 oncology trials and informed consent.

Franklin G Miller¹, Steven Joffe

¹Department of Bioethics, National Institutes of Health, , Bethesda, Maryland, USA.

Journal of Medical Ethics

|November 20, 2012

Summary

Participants in early-phase oncology trials often misunderstand trial purpose and overestimate benefits. However, this does not automatically invalidate their informed consent for cancer research.

Area of Science:

Oncology
Clinical Trials
Bioethics

Background:

Ethical concerns exist regarding informed consent quality in phase 1 oncology trials.
Participants frequently misunderstand the primary goals of these early-phase studies.

Purpose of the Study:

To evaluate participant comprehension of phase 1 oncology trial objectives.
To assess participant understanding of potential benefits and risks in early-phase cancer research.

Main Methods:

Utilized interview surveys to gather data from phase 1 oncology trial participants.
Analyzed participant understanding of trial purpose (toxicity/dosing) and perceived benefits.

Main Results:

A significant proportion of participants did not understand the purpose of phase 1 trials.

Keywords:

Informed Consent

Related Experiment Videos

Last Updated: May 16, 2026

Working with Human Tissues for Translational Cancer Research

Working with Human Tissues for Translational Cancer Research

Published on: November 26, 2015

Many participants overestimated the likelihood of therapeutic benefit from their participation.

Conclusions:

While improved information disclosure and comprehension assessment are desirable, current data do not invalidate consent for phase 1 oncology trials.
Ethical considerations in clinical trial consent require ongoing attention to participant understanding.