Recurrence Rates of Type I Gastric Neuroendocrine Tumors Treated With

Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.

Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.

Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.

Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

NCT number	NCT03812939
Study type	Observational
Source	Peking Union Medical College Hospital
Contact	Chuyan Chen, MD
Phone	+86-17701095670
Email	chuyanchen921@126.com
Status	Recruiting
Phase
Start date	January 1, 2019
Completion date	December 31, 2020

Recurrence Rates of Type I Gastric Neuroendocrine Tumors Treated With Long-acting Somatostatin Analogs

Clinical Trial Summary

Clinical Trial Description

Study Design

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