Among these, only Time to heal is currently recognized by the FDA as a primary wound outcome in clinical trials.

The search revealed 485 references involving over 462,000 subjects supporting FDA-required parameters for all 15 end points More than 50 references supported FDA-required parameters qualifying the following outcomes for use in clinical trials supporting interventions for FDA clearance: Pain reduction, Physical function and ambulation, Infection reduction, Time to heal, and Percent wound area reduction in 4–8 weeks. Forty volunteer, interdisciplinary, wound healing experts in fields related to the end points compiled evidence from systematic MEDLINE searches and society databases supporting the FDA criteria of reliability, clinical construct validity, capacity to detect concurrent or longitudinal change, and responder analysis. Further research involved systematic review of the literature regarding the most promising end points. Part 2 is focused on critical appraisal of the evidence in the wound care literature supporting FDA criteria to qualify these 15 end points as primary end points in clinical trials. Part 1 of the project surveyed 628 wound care experts who identified and content-validated 15 end points most relevant to clinical practice and benefitting patients’ lives as primary outcomes in clinical trials. The overall goal of this project is to work with FDA to expand the list of acceptable primary end points, recognizing that new and innovative treatments, devices, and drugs may not have complete healing as the focus.

Patients with wounds bear significant clinical, personal, and economic burdens yet complete wound healing is the only United States Food and Drug Administration (FDA) recognized primary clinical trial end point.

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