But the real cost is not the rework. It is the downstream consequences. For a continuing review, a returned submission may push the resubmission past the approval expiration date, triggering a regulatory lapse that halts enrollment. For an initial submission, a returned package delays site activation by the entire resubmission cycle -- often three to six weeks. For an amendment, a returned submission means the site continues operating under the old protocol version while the corrected package is processed, creating a window of potential noncompliance.

And there is a cost that is harder to measure but, I would argue, equally consequential: reputation. IRBs notice which sites submit clean packages and which sites routinely submit incomplete ones. Monitors notice. Sponsors notice. Over time, a site with a high submission return rate develops a reputation for unreliable regulatory operations -- a reputation that affects everything from enrollment allocation decisions to the intensity of monitoring visits.

Quality control is not a luxury the RC adds when there is time. It is the system that prevents the most expensive kind of failure in the submission pipeline: the failure that reaches the IRB.

But the real cost is not the rework. It is the downstream consequences. For a continuing review, a returned submission may push the resubmission past the approval expiration date, triggering a regulatory lapse that halts enrollment. For an initial submission, a returned package delays site activation by the entire resubmission cycle -- often three to six weeks. For an amendment, a returned submission means the site continues operating under the old protocol version while the corrected package is processed, creating a window of potential noncompliance.

And there is a cost that is harder to measure but, I would argue, equally consequential: reputation. IRBs notice which sites submit clean packages and which sites routinely submit incomplete ones. Monitors notice. Sponsors notice. Over time, a site with a high submission return rate develops a reputation for unreliable regulatory operations -- a reputation that affects everything from enrollment allocation decisions to the intensity of monitoring visits.

Quality control is not a luxury the RC adds when there is time. It is the system that prevents the most expensive kind of failure in the submission pipeline: the failure that reaches the IRB.