This is a randomized, placebo-controlled, double-blind,three-arm, single-centered, parallel study to evaluate the efficacy and safety profiles of the topical ointment, GM-XANTHO. For placebo group and cohort A, at least 30% eligible subjects with DM will be enrolled, for cohort B, only eligible subjects with DM will be enrolled.~Patients with pressure ulcer will be instructed to apply appropriate amount of placebo ( 3.2 mg/cm 2, for placebo group) 2.5 % GM-XANTHO [3.2 mg/cm 2, for cohort A ], or 5% GM-XANTHO [3.2 mg/cm 2, for cohort B] ointment once a day for 28 days. The appropriate dressings that maintain a moist wound as a standard background intervention.~For primary endpoint, the wound completed healing rate of the target lesion will be continuously observed to evaluate the efficacy. For secondary endpoints, the efficacy profile of GM-XANTHO will be assessed by the healing time, recurrent time and recurrent rate. The baseline of each efficacy factors will be evaluated on Day 1 before dosing.
This is a randomized, placebo-controlled, double-blind, 3-arm, single-center, phase IIa, parallel study to assess the efficacy, safety, and tolerability of topically applied 2.5%, 5% GM-XANTHO plus standard of care in patients with stage II or stage III pressure ulcer.