Expedited meetings are on a rolling basis, meaning as they come in, they are reviewed in the order they are received. Depending on the corrections/clarifications needed from the IRB and your response time determines the turnaround time for IRB approval.
Turnaround time will vary based on protocol volume at the time of submission. Therefore, we strongly encourage that protocols be submitted at least one month prior to the desired review date to allow plenty of time for board discussion and possible revisions.