PolarityTE announces positive top-line data from interim analysis of SkinTE diabetic foot ulcer trial


PolarityTE have announced positive results from a protocol-specified interim analysis of the first 50 patients enrolled in a multicentre randomised controlled trial evaluating treatment of diabetic foot ulcers with SkinTE plus standard of care (SOC) versus SOC alone.

SkinTE is a human cellular and tissue-based product derived from a patient’s own skin (autologous) intended for the repair, reconstruction, replacement, or supplementation of skin tissue.

In the study, fifty patients were evaluated across 13 sites with 25 patients receiving SkinTE plus SOC and 25 patients receiving only SOC. Demographics were well balanced between treatment groups with no statistically significant differences. Mean wound area was 4.3cm2 for the SkinTE plus SOC arm and 3.3cm2 for the SOC arm (p=0.19). Mean wound age was 25.3 weeks for the SkinTE plus SOC arm and 22.1 weeks for the SOC arm (p=0.57).

All SkinTE patients recevied only one application of the product, except two patients who recevied a reapplication due to inadvertent removal of the original product.

Primary endpoint interim analysis found that 72% of patients treated with SkinTE plus SOC achieved wound closure by 12 weeks vs. 32% of patients treated with SOC alone (p=0.005).

In terms of secondary endpoints, per cent area reduction (PAR) was greater with SkinTE plus SOC versus SOC alone and was statistically significant at four, six, eight, and 12 weeks. No significant differences between treatment groups in pain scores, wound quality of life, or Semmes-Weinstein Score.

Preliminary analysis showed that SkinTE treatment did not result in more adverse events than SOC.

These data were presented by the study chair, David Armstrong, professor of Clinical Surgery at the Keck School of Medicine of the University of Southern California (Los Angeles, USA), at the SAWC Spring 2020 Virtual Conference held 24–26 July.

Armstrong commented: “Diabetic foot ulcers exact a substantial toll on the patients who suffer from them in terms of the impact to their daily lives. Many of these patients are on a path to even more serious, life-threatening, and morbidity-increasing procedures such as amputations. These patients have historically lacked access to treatments that offer durable closure of these hard-to-treat wounds.”

Armstrong continued: “I am very encouraged by the positive results from this interim analysis. The data show a statistically significant difference favoring PolarityTE’s autologous skin construct, SkinTE, in the primary endpoint of wounds closed at 12 weeks, and in percent area reduction of wounds at each time point measured. We look forward to completing the trial and reading out the full data set in due course.”

Nikolai Sopko, chief scientific officer at PolarityTE, added: “We are grateful for the patients’ participation in this important trial. We at PolarityTE are passionately committed to helping fulfill the significant unmet needs that patients who suffer from DFUs endure. We are very pleased with these data and want to thank the investigators for all of their hard work in treating these patients.”


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