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Microbion Corporation Receives up to $2.1 million in Funding Support from the US Navy

in Partnership with CUBRC, Inc. to Advance Topical Pravibismane

 

Funding will support exploratory phase 2 proof-of-concept study in patients hospitalized for moderate to severe diabetic foot ulcer infection (DFI)

 

BOZEMAN, Mont. and VANCOUVER, BC, June 7, 2022 /PRNewswire/ – Microbion Corporation of Bozeman, MT, today announced that it has received non-dilutive funding through its strategic partnership with CUBRC, Inc., a Buffalo-based, independent not-for-profit research company, of up to $2.1 million from the US Navy through the Medical Technology Enterprise Consortium (MTEC) partnership. The funding project is titled “Pravibismane Suspension as a Topical, Broad Spectrum Anti-Infective Wound Care Treatment and Prevention for Combat Injury-Related Infections”. The funding received will be used to support the conduct of an exploratory phase 2 proof of concept trial in patients hospitalized for moderate to severe diabetic foot ulcer infection with enrollment expected to begin in Q2 2022.

 

“We are pleased to be supported by the US Navy and MTEC and are working closely with them to advance our topical pravibismane through phase 2 proof-of-concept studies,” said Karim Lalji, CEO of Microbion Pharma Corp. “Our topical diabetic foot ulcer infection program is well aligned to the Navy’s interest in innovative wound care technologies to treat and prevent biofilm-related infections, since biofilm contamination is a hallmark characteristic of chronic foot ulcer infections. Further exploration of pravibismane’s safety and efficacy in overcoming biofilm-related DFI may potentially expand the clinical utility of topical pravibismane to treat combat wound infections in a variety of settings, including in the field and hospital.”

 

Lester Martinez, MD, MPH, Major General (Retired), U.S. Army, President and Chairman of MTEC Board commented on the importance of Microbion’s research. “Though diabetic foot ulcer infections aren’t traditionally thought of as a combat related wound suffered in the field, diabetes is a serious disease that affects a significantly high percentage of our veterans and its complications such as DFI contributes to decline in health, quality of life and are responsible for the vast majority of non-combat amputations among veterans. Microbion’s research into healing these wounds with the ultimate goal of preventing or delaying amputations can potentially improve the daily lives of these patients and return normal mobility,” Dr. Martinez stated.

 

Pravibismane is the first in a new class of anti-infective drugs structurally unrelated to other clinically utilized antibiotics. With a novel mechanism of action, pravibismane shuts down bacterial ATP production thereby halting global bacterial cellular metabolism. In in vitro studies, pravibismane exhibits broad-spectrum, potent activity against DFI-relevant pathogens and their biofilms including MRSA and drug resistant P. aeruginosa.

 

In a randomized, double-blind, placebo-controlled Phase 1b trial treating patients with chronic moderate to severe diabetic foot ulcer infection, topical pravibismane treatment plus standard of care demonstrated a numeric 85% wound size reduction versus 30% placebo plus standard of care. Pravibismane also demonstrated a numeric reduction in ulcer-related amputation (2.6% in the pravibismane group vs 15.4% placebo).

 

DFIs are a major health concern in the Veterans Health Administration as DFUs are associated with a substantial mortality rate (five-year mortality rates are as high as 45% for neuropathic ulcers and 55% for ischemic ulcers1) and often require amputation to fully address the nidus of infection.2 Approximately 28.5 million adults in the US are diagnosed with diabetes, of whom 15 – 25% are at risk of developing a foot ulcer.3,4 More than half of diabetic foot ulcers become infected.5 DFIs remain the most frequent diabetic complication requiring hospitalization and are the most common precipitating event leading to lower extremity amputation.6 Furthermore, recent studies suggest that many DFIs are caused by bacteria in a biofilm mode.6 In 2018, there were ~8.25 million hospital discharges with diabetes reported, including 154,000 for a lower-extremity amputation.3 US Veterans Affairs estimates there were 20.3 million living Veterans in 2018.7 The overall prevalence of diabetes among US veterans is ~25%, which is higher than the US civilian population at ~9%.8

 

References:

  1. Del Core MA, Ahn J, Lewis RB, et al. The evaluation and treatment of diabetic foot ulcers and diabetic foot infections. Foot & Ankle Orthopaedics. 2018;3:3. doi:10.1177/2473011418788864
  2. Sundararajan PP, Porter BM, Grant KA, et al. Foot infections in the Veterans Health Administration. The Foot and Ankle Online Journal. 2015;8(3):1. doi:10.3827/faoj.2015.0803.0001
  3. Centers for Disease Control and Prevention. National Diabetes Statistics Report website. https://www.cdc.gov/diabetes/data/statistics-report/index.html, accessed June 6, 2022
  4. Lavery LA, Davis KE, Berriman SJ, et al. WHS guidelines update: Diabetic foot ulcer treatment guidelines. Wound Repair Regen. 2016;24(1):112–26. doi: 10.1111/wrr.12391
  5. Armstrong, DG, Boulton, AJM, and Bus, SA. Diabetic foot ulcers and their recurrence. N Engl J Med. 2017;376:2367-75. doi: 10.1056/NEJMra1615439
  6. Lipsky et al. Guidelines on the diagnosis and treatment of foot infection in persons with diabetes (IWGDF 2019 update). Diab Metab Res Rev. 2020. e3280. doi: 10.1002/dmrr.3280
  7. VETPop2018: A Brief Description. Web: https://www.va.gov/vetdata/docs/Demographics/New_Vetpop_Model/VP_18_A_Brief_Description.pdf, accessed June 6, 2022
  8. Liu Y, Sayam S, Shao X, et al. Prevalence of and trends in diabetes among veterans, United States, 2005–2014. Prev Chronic Dis. 2017;14:170230. doi: 10.5888/pcd14.170230

 

About Microbion
Microbion is a clinical-stage pharmaceutical company developing a new class of therapeutic compounds to improve the lives of patients with rare and serious diseases. Microbion’s lead drug candidate, pravibismane, is the first product in this new class and has a novel mechanism of action offering unique potential to address the unmet needs of chronic and severe health conditions. The Company is advancing inhaled pravibismane in Phase 1 clinical development for the treatment of chronic lung diseases, including non-tuberculous mycobacteria (NTM) and cystic fibrosis-related lung infections. Topical/local pravibismane is in Phase 2 development for the treatment of chronic wounds and orthopedic infections. Pravibismane has received backing from the Cystic Fibrosis Foundation, NIH, US DoD, and CARB-X with over $21 million in grants. The FDA has granted pravibismane with Orphan Drug, Fast Track, and QIDP designations. Microbion Pharma Corp. is a wholly owned subsidiary of Microbion Corporation. For more information visit: www.microbioncorp.com.

 

About CUBRC
CUBRC is an independent not-for-profit scientific corporation that executes Research, Development, Testing and Systems Integration programs in Medical Sciences, Chemical and Biological Defense, Data Science and Information Fusion, Command and Control, and Hypersonics. For more information visit: www.cubrc.org.

 

Safe Harbor Statement
Certain of the statements made in this press release are forward-looking, such as those, among others, relating to the success of clinical development of pravibismane and preparation for potential commercialization. These statements are subject to risks and uncertainties that could cause actual results and events to differ materially from those anticipated, including, but not limited to, risks and uncertainties related to: our ability to enroll patients in our clinical trials at the pace that we project; the size and growth of the potential markets for pravibismane or any future product candidates and our ability to serve those markets; our ability to obtain and maintain regulatory approval of pravibismane or any future product candidates; and our expectations regarding the potential safety, efficacy or clinical utility of pravibismane or any future product candidates. Actual results or developments may differ materially from those projected or implied in these forward-looking statements. Microbion Corporation disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

 

US Government Funding Disclaimer
Efforts described herein were partially sponsored by the Government under Other Transactions Number W81XWH-15-9-0001. The U.S. Government is authorized to reproduce and distribute reprints for Governmental purposes notwithstanding any copyright notation thereon. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of the U.S. Government.

 

SOURCE Microbion Corporation

This article was originally published here

Microbion Corp. Presents a Poster on Pravibismane’s Activity Against Diabetic Foot Infection Patient Isolates

admin
  • Poster highlights pravibismane’s MIC activity in testing against aerobic and anaerobic pathogens isolated from diabetic foot infection patients
  • Pravibismane demonstrated potent, broad-spectrum activity against a wide range
    of pathogens, including MRSA, MSSA, and P. aeruginosa

BOZEMAN, Mont., May 10, 2023 /PRNewswire/ – Microbion Corporation today announced that the company presented a poster focusing on pravibismane’s activity against diabetic foot ulcer infection pathogens at the 9th International Symposium on the Diabetic Foot that is currently ongoing from May 10th to 13th, 2023 at The Hague, Netherlands. The poster highlights pravibismane’s activity versus comparator antibiotics against pathogens isolated from diabetic foot infection (DFI) patients in an earlier Phase 1b clinical study.

Poster Details:
Representative image (CNW Group/Microbion Corporation)

Representative image (CNW Group/Microbion Corporation)

Title: Broad-Spectrum, Potent Activity of Pravibismane Versus Comparators Against Diabetic Foot Ulcer Infection Patient Isolates Collected in a Phase 1b Study

Presenter: Dr. Jeff Millard, CSO

Poster Highlights:
  • Most common pathogens isolated from DFI subjects (N = 44) at baseline were: methicillin-susceptible Staphylococcus aureus [MSSA (25%)]; methicillin-resistant Staphylococcus aureus [MRSA (18.2%)]; Enterococcus faecalis (13.6%); and Pseudomonas aeruginosa (11.4%).
  • Mean pravibismane minimum inhibitory concentration (MIC) (µg/mL) for S. aureus MSSA was 0.21, S. aureus MRSA was 0.17, E. faecalis was 2.53, and P. aeruginosa was 1.43.
  • Mean pravibismane MICs for 12 of the 13 anaerobic bacteria was ≤1 µg/mL, including against Finegoldia magna and Anaerococcus spp.
  • Pravibismane exhibited similar or lower MIC relative to a panel of comparator antibiotics, including (but not limited to) levofloxacin, linezolid, clindamycin, and piperacillin-tazobactam, against Gram-positive and Gram-negative, susceptible and resistant, aerobes and anaerobes.

"We are pleased that pravibismane demonstrated extremely potent MIC activity against clinical DFI isolates, which was in line with in vitro AST microbial pre-clinical studies," said Dr. Jeff Millard, CSO of Microbion Corp. "Diabetic foot infections are often infected by several different bacterial species concurrently, which may change over the chronicity of the wound, from predominantly aerobic to anaerobic. We believe pravibismane’s potent broad-spectrum activity is potentially a key treatment advantage since a single agent could eradicate both aerobic and anaerobic bacteria, thereby decreasing the need for multiple systemic therapies."

Bacterial cultures for this study were grown from swabs collected at the wound bed at baseline visit and antimicrobial susceptibility testing (AST) was performed on isolated pathogens. Pathogen isolation and AST was performed at Investigational Health Management Associates (IHMA, IL), using the Clinical & Laboratory Standards Institute (CLSI) standard methods.

Topical pravibismane has received QIDP and Fast Track drug designation from the US FDA for the adjunctive treatment of moderate and severe diabetic foot ulcer infections. Topical pravbismane is currently enrolling in a Phase 2 clinical study to further evaluate its safety and efficacy in subjects suffering from moderate infections associated with chronic diabetic foot ulcers.

About Microbion

Microbion is a clinical-stage pharmaceutical company developing a new class of therapeutic compounds to improve the lives of patients with rare and serious diseases. Microbion’s lead drug candidate, pravibismane, is the first product in this new class and has multiple novel modes of action offering unique potential to address the unmet needs of chronic and severe health conditions. Topical/local pravibismane is in Phase 2 development for the treatment of chronic wounds and orthopedic infections. The Company is advancing inhaled pravibismane in Phase 1 clinical development for the treatment of chronic lung diseases, including non-tuberculous mycobacteria (NTM) and cystic fibrosis-related lung infections. Pravibismane has received backing from the Cystic Fibrosis Foundation, NIH, US DoD, and CARB-X with over $21 million in grants. The FDA has granted pravibismane with Orphan Drug, Fast Track, and QIDP designations.

For more information visit: www.microbioncorp.com.

Safe Harbor Statement

Certain of the statements made in this press release are forward-looking, such as those, among others, relating to the success of clinical development of pravibismane and preparation for potential commercialization. These statements are subject to risks and uncertainties that could cause actual results and events to differ materially from those anticipated, including, but not limited to, risks and uncertainties related to: our ability to enroll patients in our clinical trials at the pace that we project; the size and growth of the potential markets for pravibismane or any future product candidates and our ability to serve those markets; our ability to obtain and maintain regulatory approval of pravibismane or any future product candidates; and our expectations regarding the potential safety, efficacy or clinical utility of pravibismane or any future product candidates. Actual results or developments may differ materially from those projected or implied in these forward-looking statements. Microbion Corporation disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

SOURCE Microbion Corporation

Microbion Corporation Announces Granting of a US Patent for the Use of Topical Pravibismane

for Diabetic Foot Ulcer Infections
Microbion Corporation today announced that the US Patent and Trademark Office (USPTO) issued United States Patent No. 11,207,288 to Microbion on December 28, 2021, with claims to the use of Microbion’s proprietary pravibismane topical composition for diabetic foot infections (“DFI”). The patent, entitled “Bismuth-thiol compositions and methods for treating wounds,” extends topical pravibismane patent protection through to mid-2039. The granted claims cover the administration and use of topical pravibismane compositions in diabetic foot ulcer infections. This patent further expands Microbion’s patent portfolio, comprising granted claims to its pravibismane composition and methods of treating wounds and diabetic foot ulcers.

 

“We are pleased that the USPTO has granted this new patent supporting our pravibismane program for the treatment of diabetic foot infections,” said Dr. Brett Baker, Microbion’s President and Chief Innovation Officer. “This patent includes claims built on data from our Phase 1b clinical studies in infected patients. In these studies, topical pravibismane demonstrated a 3-fold reduction in chronic wound size compared to placebo when administered as an adjunct to standard of care treatment in patients with moderate to severe DFI. We are committed to developing novel therapies that fulfill the unmet needs caused by diabetic foot ulcer infections and faced by these patients every day.” … read more


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Topical Pravibismane Shows Promise for Diabetic Foot Infections



Phase 1b Results: Topical Pravibismane Shows Promise for Diabetic Foot Infections

Summary: This phase 1b randomized, multi-center, double-blind, placebo-controlled trial assessed topical pravibismane—a novel broad-spectrum anti-infective targeting biofilm-associated pathogens—as an adjunct to standard care for moderate to severe diabetic foot ulcer (DFU) infections in 53 patients over 4 weeks. Primarily evaluating safety, the study also captured efficacy signals, revealing nearly 3-fold greater wound size reduction, lower amputation rates, and microbiological clearance of key pathogens compared to placebo. Well-tolerated across doses with no significant safety issues, pravibismane addresses antimicrobial resistance and biofilm challenges, potentially reducing reliance on systemic antibiotics and supporting faster wound closure in this high-risk population.

Key Highlights:

  • Trial design: Double-blind, placebo-controlled; topical application over 4 weeks; primary endpoint safety/tolerability; secondary: wound reduction, amputations, microbiology.
  • Efficacy: ~3x greater ulcer size reduction vs. placebo; reduced lower extremity amputations; effective against biofilm-forming bacteria in DFUs.
  • Safety: Well-tolerated with no significant concerns; supports advancement to larger trials.
  • Expert quote (Benjamin Lipsky, MD): “We are pleased with the safety results and signals of clinical efficacy, which we believe warrant further clinical development… There is currently a major unmet need for new, easy-to-apply drug agents with multiple modes of activity to treat infection.”
  • Expert quote (David Armstrong, DPM, PhD): “We are encouraged by the clinical efficacy signals… We need new agents that promote faster closing of infected wounds because we are currently dependent on an expensive, time-consuming, two-pronged approach.”
  • Future: Sponsored by Microbion; data published in International Wound Journal (April 3, 2024); plans for further development in DFI treatment.

Read full article

Keywords: topical pravibismane, diabetic foot ulcer infection, biofilm targeting, wound size reduction, amputation prevention, Benjamin Lipsky, David Armstrong, Microbion