Preservation

The Science & Safety of Carbon Monoxide in
Organ Transplant

The Carbon Monoxide Therapeutics Company

Carbon monoxide (“CO”) has long been recognized and studied for its therapeutic potential given its unique and potent cytoprotective, anti-inflammatory and anti-fibrotic effects. Indeed, amongst the four therapeutic, so-called “gasotransmitter” gases (CO, nitric oxide, hydrogen sulfide and xenon), CO dwarfs the others in terms of preclinical validation in a wide variety of therapeutic areas. In addition, these therapeutic effects are realized at doses far less than what is already firmly established as toxic levels.

To harness this broad potential, Proterris has amassed a broad array of inhaled & small molecule CO therapeutics for transplant, nephrology, pulmonary and oncology applications, which together address a treatable patient population of more than 20 million patients in the U.S. alone.

Therapeutic Carbon Monoxide: Controlled dosing, multi-modal organ protection

“All things are poison, and nothing is without poison; the dosage alone makes it so a thing is not a poison.” – Paracelsus, 1538

In Vivo Therapeutics
Effects of CO

Controlled CO-dosing has demonstrated strong cyto-protective, immuno-modulatory, anti-fibrotic and anti-inflammatory effects while demonstrating strong safety:

Safe

CO dosed in over a dozen human clinical studies to date, with tight control over blood CO levels and no major side effects

Effective

>20 studies published in preclinical transplant models, shown to

  • Improve kidney and liver preservation in rats and pigs
  • Prevent lung ischemia-reperfusion injury and chronic rejection in rodents
  • Improve islet cell survival
  • Reduce small bowel transplant IRI in rats
  • Improve cardiac allograft survival in rodents
  • Prevent aortic allograft vasculopathy in mice
  • Our CO and inhalational platform has been developed & validated by >$30M NIH/DoD funding to scientific co-founder Augustine Choi to study CO in IPF & ARDS

    CO has been identified as a key therapeutic opportunity, with strong evidence for both safety & efficacy