Thursday, November 30, 2017 7:28:42 AM
- Responses mediated by multiple pathways, including IL-17, IL-22 and interferons
- Down-regulation of more than 500 disease-related genes; wide range of central “psoriasis-related” genes effectively normalized
The MOA work used tissue biopsy specimens collected from participants in a multicenter study of subjects with mild to moderate psoriasis (NCT02322086). Patients applied a vehicle treatment each day for 28 consecutive days to plaque psoriasis on the central part of their bodies or extremities, and then applied PH-10 each day for 28 consecutive days to these same areas. Biopsies of one target plaque were collected at baseline (at least 7 days prior to first study treatment on Day 1), and then at Days 29 and 64 (with a 7-day interval between the biopsy at Day 29 and the commencement of PH-10 application on Day 36). Study data from each subject served as an internal control (i.e., non-lesional skin and plaque skin assessment at baseline and serial biopsies at the end of the applications of the vehicle and PH-10, respectively) to assess patients’ clinical and cellular responses to PH-10.
Topical PH-10 Results from MOA Study Presented at Psoriasis G2C:
- The vehicle treatment did not significantly alter the expression of core IL-17- or IL-23-modulated genes, or the overall disease transcriptome.
- PH-10 treatment significantly down-regulated IL-17A, IL-22, IL-26, IL-36 and keratin 16 genes.
- Pathways significantly improved by PH-10 treatment included published psoriasis transcriptomes and cellular responses mediated by IL-17, IL-22 and interferons.
- PH-10 treatment also resulted in the downregulation of more than 500 disease-related genes. The expression of a wide-range of central “psoriasis-related” genes including IL-23, IL-17, IL-22, S100A7, IL-19, IL-36 and CXCL1 were effectively normalized to levels consistent with non-lesional skin.
Mr. Rodrigues added, “We believe Dr. Krueger’s foundational analysis of immune and psoriasis-related gene modulation by PH-10 confirms its clinical relevancy, albeit in a brief, four-week treatment regimen. This prior regimen was studied by Provectus in multiple Phase 1 and 2 clinical studies of psoriasis and atopic dermatitis comprising more than 200 patients; minimal adverse effects were observed and efficacy was evident in all metrics, such as psoriasis severity index, plaque response assessment, pruritus self-assessment, eczema area severity index, and investigator’s global assessment.”
Mr. Rodrigues concluded, “Provectus is now in the position to establish the full efficacy potential of topical PH-10. We are refining our clinical development program for dermatology to include longer administration of PH-10 that would allow for its direct comparison with both topical and systemic approved drugs.”
A copy of the poster presentation is available on Provectus’ website at http://www.provectusbio.com/media/docs/publications/PVCT_PG2C2017.pdf.
About Provectus
Provectus is a clinical-stage biotechnology company leading the development of a new class of drugs based on halogenated xanthenes. Intralesional PV-10, the first small molecule oncolytic immunotherapy, is undergoing clinical study for adult solid tumor cancers like melanoma and cancers of the liver, and preclinical study for pediatric cancers. Topical PH-10 is undergoing clinical study for inflammatory dermatoses like psoriasis and atopic dermatitis. Information about the Company’s clinical trials can be found at the NIH registry, http://www.clinicaltrials.gov. For additional information about Provectus, please visit the Company’s website at http://www.provectusbio.com.
FORWARD-LOOKING STATEMENTS: This release contains "forward-looking statements" as defined under U.S. federal securities laws. These statements reflect management's current knowledge, assumptions, beliefs, estimates, and expectations and express management's current views of future performance, results, and trends and may be identified by their use of terms such as "anticipate," "believe," "could," "estimate," "expect," "intend," "may," "plan," "predict," "project," "will," and other similar terms. Forward-looking statements are subject to a number of risks and uncertainties that could cause our actual results to materially differ from those described in the forward-looking statements. Readers should not place undue reliance on forward-looking statements. Such statements are made as of the date hereof, and we undertake no obligation to update such statements after this date.
Risks and uncertainties that could cause our actual results to materially differ from those described in forward-looking statements include those discussed in our filings with the Securities and Exchange Commission (including those described in Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2016).
Contact:
Provectus Biopharmaceuticals, Inc.
Tim Scott, PhD
President
Phone: (866) 594-5999
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