Wound Healing clinical trials at UC Davis

This study evaluates whether applying RECELL® autologous skin cell suspension (ASCS) to one half of a split-thickness skin graft (STSG) donor site accelerates re-epithelialization and improves long-term scar quality compared with the untreated half of the same donor site. Using a prospective, randomized, intra-patient (split-site) controlled design, each participant's donor site is divided into two contiguous, comparable halves at the time of surgery; one half is randomized to receive RECELL® application plus standard transparent film dressing, while the other receives standard dressing alone. Each participant serves as their own control, eliminating inter-patient variability in healing. Participants are followed for 12 months with serial standardized digital photography, blinded outcome assessment, and validated scar-assessment instruments (POSAS 2.0, Vancouver Scar Scale).

The purpose of this study is to determine the potential influence of sun protection on the aesthetic outcome of post-surgical scars following the reconstruction of Mohs micrographic surgery defects via linear repair. This study will be performed as a randomized split-wound study. Half of the wound will be treated with zinc containing sunscreen and the other half of the wound would not be treated. Three-months post-surgery, the scar will be evaluated via the patient observer scar assessment scale (POSAS), a validated scar instrument, as well as a colorimeter to measure the amount of vascularity, and hyperpigmentation between the treated and the non-treated area compared to the 'surrounding skin' defined as skin in the proximity but not adjacent to the wound. Any adverse events will also be recorded.

The purpose of this research study is to evaluate the efficacy and safety of topical timolol 0.5% for secondary intention wound healing following 1) Mohs micrographic surgery, 2) standard surgical excision, OR 3) electrodesiccation and curettage (ED&C). Please note that healing by secondary intention refers to when a wound heals naturally without surgical closure. To evaluate the efficacy of topical timolol 0.5%, 220 participants will be recruited. Participants will be placed into one of two groups: The treatment group or the control group. 1. The treatment group will receive a topical timolol 0.5% solution, which will be applied to their wound daily for 12 weeks. 2. The control group will receive standard care with the addition of hydrogel, which will also be applied to their wound daily for 12 weeks. During this 12-week period, both groups will be required to upload photos of their wound healing to their MyChart account at weeks 3, 6, 9, and 12. These photos will be reviewed by the investigator to assess wound healing. Re-epithelialization and earlier complete wound healing will be compared between both groups to determine the efficacy of topical timolol 0.5% solution compared to the standard of care.