Could an IRB lose its quorum when members with a conflict of interest leave the room for deliberation and voting on a study?
Yes. “The quorum is the count of the number of members present. If the number present falls below a majority, the quorum fails. The regulations only require that a member who is conflicted not participate in the deliberations and voting on a study on which he or she is conflicted. The IRB may decide whether an individual should remain in the room.