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Published byGodwin Carson Modified over 9 years ago
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CLINICAL TRIALS – PHASE III
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What are phase III trials Confirmatory phase (Therapeutic confirmatory trial) Trials are done to obtain sufficient evidence about efficacy and safety Conducted in larger number of patients In comparison with standard drug/placebo
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OBJECTIVES To establish efficacy of the drug against existing therapy To establish the safety in relatively large number of patients To establish method usage in clinical practices To identify contraindications, warnings
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SUB-TYPES Phase III a Before submission of NDA Phase III b After submission of NDA but before approval
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STUDY- SITES Conducted at community hospitals Other facilities Nursing home Private clinics Multicentric High costs involved
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AGREEMENTS Agreements with investigator (time lines, responsibilities, financial support, archives, publication of results etc) Agreements with laboratories (time lines, costs, quality) Agreements with hospitals (for use of facilities and payments if any Agreements with courier companies for shipments
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STUDY POPULATION Patients with target disorder Patients for whom drug may be indicated Number of patient upon Statistical requirement Availability of patients Regulatory requirements depends Avoid patient with severe medical conditions
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STUDY DESIGN Need of study design in phase III Randomization Blinding Control Control is needed to have comparison of test drug with other A- Active control B- Placebo control
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CONTD… Inclusion criteria is more flexible as large number of patients are recruited COMPLIANCE Should noncompliant patients be discontinued from study ?
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ESSENTIAL DOCUMENTS Trial Protocol with identifiable date and version Informed consent form with translations and back translations Case Record Forms Brochures- Investigators and Patients Patient recruitment aids
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SITE PREPARATIONS Ensure that IRB exists and functions as per regulatory requirements Ensure personnel are adequately trained, both in technology and GCP Collect all documents pertaining to the site eg. CVs of investigators Conflict of Interest Forms Training certificates if required
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TRIAL MANAGEMENT Manage supply of trial related documents, trial supplies Recruitments schedules and time lines Co-ordination with laboratories Timely receipt and completion of CRFs Resolution of queries Payment to sites
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PATIENT VISIT Patient visits should be as per visit schedule Match patient visits with logs Deviations are followed up Remedial action identified and communicated Patient withdrawals- identify and remedy the causes
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INITIATION MEETING Held after all trial material reaches sites Held on site or by phone or video conference Discuss all procedures again Confirm total understanding and availability of trial material If all is clear declare site open for recruitment
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Monitoring To check/watch study To evaluate progress of trial To check compliance with SOPs, Protocol and Regulatory requirements If any fault that should be brought in notice of sponsor
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INVESTIGATORS MEETING Held after all documents are complete To be attended by Investigator’s and co-ordinators Discuss protocol, ICF administration, CRF entry, randomization and recruitments, trial procedures, financial agreements and any study related activities
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AUDITING To check compliance with protocol, SOP’s, and GCP Observation and finding of auditor should be documented Auditors may audit GMP conditions under which the drug was manufactured Auditors may audit electronic systems for compliance with 21CFR 11.
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CLOSE OUT After ensuring the study is complete. All CRF received All study material is accounted for All investigational product is accounted for and balance returned to sponsor Ensure payment completion
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TIME PERIOD & FEE Study generally lasts anywhere from 2 to 10 years (with an average length of 5years) According to Sch. Y the fee required for Phase III is Rs.25000
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