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A phase II clinical trial is the phase of testing to see whether or not a drug has any biological effect. The phase IIa trial is the phase in which it is determined what dosage of a drug should be given.

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Q: What is a phase IIa clinical trial?
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Related questions

Which type of clinical trials is used the least?

Phase IV trial


What is clinical trail management software?

Clinical trial management software helps in the process of recording various medical results obtained during the clinical trial phase of medical testing.


What is clinical trial data services?

Clinical Trial Data Services (CTDS) are an organization that focus on clinical research. The organization also provide understanding about clinical trial processes, for example.


What industries use a clinical trial management system?

The clinical trial management system is used in biochemical, pharmecutical industries and clinical research institutions. The system itself is used to correlate large amounts of data concerning the clinical trial.


What are the pros and cons of participating in a clinical trial?

What are the pros and cons of independent members in clinical trial committees having volunteers in these positions


How would you register for clinical trial patient recruitment?

You would register for clinical trial patient treatment by contacting a company that specializes in the recruitment of people for clinical trials. One such company is called Clinical Connection.


When was Clinical Trial Service Unit created?

The Clinical Trial Service Unit (CTSU) was created in 1975 at the University of Oxford to design and conduct large-scale clinical trials to evaluate the effectiveness of different treatments and interventions for various medical conditions.


What are phase 2 a clinical trials?

Phase II clinical trial determines the effectiveness and safety of the candidate drug in patients suffering from the condition the new drug is designed to treat. The main question that is answered in phase II studies is: "What is the most effective dosage range and the drug safety within that range?" Phase II studies enroll 100 to 300 subjects, and depending upon the type of investigational drug and the condition it treats, the trial lasts anywhere from six months to two years. Phase 2 is sometimes further classified into 2a and 2b phases based on the type of trials: Phase 2a assesses the amount of drug to be given to the subject for optimal results. Phase 2b assesses the how well the drug works at the prescribed dosage levels. Know more about the phases involved in clinical trials: http://www.crocareers.in


What is a limitation of a clinical trial?

Hospital costs


What is observed in a clinical trial?

An actual patient


How ate participants assembled for a clinical trial?

There is very little cannibalism in clinical trials


What are the different phases of a clinical trial?

Clinical trials will generally have three or four phases. Phase 1 is a safety trial where a small number of healthy volunteers are given the treatment to see whether there are any serious side effects. If this is successful, then researchers will proceed to phase 2, testing a larger sample of people in order to discover how effective the treatment is and the best way to administer it. Phase 3 will often involve many thousands of patients, some receiving the new treatment while others have the current standard treatment, so that it can be established whether the new one is really better. A phase 4 trial may follow after a drug has been licensed.