phase IV trial

After a treatment has been approved and is being marketed, it is studied in a phase IV trial to evaluate side effects that were not apparent in the phase III trial. Thousands of people are involved in a phase IV trial.

English dictionary of cancer terms . 2015.

Look at other dictionaries:

  • phase III trial — A study to compare the results of people taking a new treatment with the results of people taking the standard treatment (for example, which group has better survival rates or fewer side effects). In most cases, studies move into phase III only… …   English dictionary of cancer terms

  • phase I trial — a clinical trial on normal volunteers, designed to determine the biological activities and range of toxicity or other safety factors of a given therapy …   Medical dictionary

  • phase II trial — a clinical trial on a small group of patients, designed to determine the effectiveness of the given regimen in treating the disorder in question …   Medical dictionary

  • phase III trial — a clinical trial that uses a large sample of patients and is designed to compare the overall course of their disorder under the new treatment with its course untreated and treated with standard therapies previously used; studies are also done on… …   Medical dictionary

  • phase I trial — The first step in testing a new treatment in humans. These studies test the best way to give a new treatment (for example, by mouth, intravenous infusion, or injection) and the best dose. The dose is usually increased a little at a time in order… …   English dictionary of cancer terms

  • phase IV trial — additional studies done after a drug has been approved for distribution or marketing, which could include examination of long term effects, adverse effects, or specific aspects of a drug s action …   Medical dictionary

  • phase II trial — A study to test whether a new treatment has an anticancer effect (for example, whether it shrinks a tumor or improves blood test results) and whether it works against a certain type of cancer …   English dictionary of cancer terms

  • Phase dispersion minimization — (PDM) is a data analysis technique that searches for periodic components of a time series data set. It is useful for data sets with gaps, non sinusoidal variations, poor time coverage or other problems that would make Fourier techniques unusable …   Wikipedia

  • Phase 1 — may refer to:* Phase I Environmental Site Assessment * Phase 1 clinical trial * Phase 1 (bar)Phase One may also refer to:* Phase One The Danish camera equipment company …   Wikipedia

  • Phase I — may refer to: *Phase I of a clinical trial in medicine *Phase I Environmental Site Assessment *Phase I reactions in metabolismSee also: Phase (disambiguation) …   Wikipedia

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