IRB Tip Archive
Continuing Review and Total number of subjects enrolled/accrued
Federal regulations set the criteria for IRB approval of research undergoing continuing review. Under these regulations, the investigators and the IRB are responsible for fulfilling specific requirements associated with the continuing review. In particular, investigators are responsible for submitting sufficient materials and information regarding their project so that the IRB is able to meet its regulatory obligations prior to the expiration date of the current IRB approval. The investigator meets these obligations through the submission of a Form 3 (Continuing Review Submission Form) via iMedRIS, the IRB electronic system.
As part of the continuing review of a research project, the IRB evaluates the number of subjects who have been enrolled or accrued to the study. Therefore, investigators must supply to the IRB the total number of subjects who have been enrolled or accrued to the study. Enrollment in a research study occurs when the consent form is signed, not when the subject is randomized. The total number of subjects enrolled in a research study also includes the number of subjects who failed screening procedures, subjects who were lost to follow-up, or subjects whose participation was terminated by the investigator.
Consider the following when calculating the total number of subjects who were enrolled or accrued to a study:
(click equation to enlarge)
Quality Improvement (QI) Projects and IRB Review
QI activities oftentimes occupy an uncertain territory between clinical care and research. Although most QI activities involve a systematic investigation of some question of interest, many do not involve research as defined in the federal regulations for the protection of human subjects (45 CFR 46). In other cases, QI activities are designed to accomplish both a research purpose as well as a non-research purpose and IRB review is required. The following chart formulates some criteria that may be helpful in determining whether a QI project involves a research component and must be reviewed under the regulations for the protection of human subjects:
QI projects may include a research component if: |
QI projects do not include a research component if: |
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Submission Routing
Don’t forget that before you submit an application or response to the IRB, you need to route the submission to the appropriate key study personnel so that he/she may apply his/her electronic signature. For additional assistance, consult the Routing, Signoff and Workflow Tracking Guide located under the iMedRIS Guides and Tips on the left side of your screen.
Type of Submission |
Required Signature(s) |
Registrations |
Principal Investigator (PI) only |
Response to recommendations/provisos for any submission form |
PI or investigator |
New Application |
PI, all Co/Sub-Investigators, Hospital Service Chief (for The MED studies), Dept. Chair if PI is a UT student/fellow/resident/employee/faculty member, & Faculty Advisor if PI is a student, fellow, or resident |
Revisions (Form 2), Continuation (Form 3), Adverse Events (Form 4x), etc. |
PI or Co/Sub-investigator |
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Memphis, TN 38163
Phone: (901) 448-4824
Fax: (901) 448-5103
Email: irb@uthsc.edu

