Kaleido Biosciences Announces Presentation of Data for Microbiome Metabolic Therapy KB174 for Hepatic Encephalopathy at The Digital International Liver Congress™ (EASL)
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Kaleido Biosciences Announces Presentation of Data for Microbiome Metabolic Therapy KB174 for Hepatic Encephalopathy at The Digital International Liver Congress™ (EASL)

LEXINGTON, Mass., Aug. 27, 2020 (GLOBE NEWSWIRE) -- Kaleido Biosciences, Inc. (Nasdaq: KLDO) today announced that data from Microbiome Metabolic Therapy (MMT™) candidate KB174 for hepatic encephalopathy (HE) will be featured during The Digital International Liver Congress™, the Annual Meeting of the European Association for the Study of the Liver (EASL). The results include details on the effects of KB174 on microbiome nitrogen metabolism in a clinical study in patients with well-compensated cirrhosis, the demonstration of improved tolerability for KB174 relative to lactulose in a study of healthy volunteers, as well as effects of MMTs on bacterial composition in patient samples ex vivo.

“The data being presented expand upon the previously reported topline clinical proof-of-concept results with KB174 showing the potential to reduce microbiome ammonia production as well as pathogens,” said Katharine Knobil, M.D., Chief Medical Officer and Head of Research & Development at Kaleido. “Given that ammonia is central to the pathogenesis of HE, the higher risk of infection in this susceptible population, and the favorable tolerability of KB174 relative to lactulose, which is currently used first line for HE, these results provide compelling support for continued development of KB174 as a novel therapy for this disease.”

Details of the poster presentations featured at The International Liver Congress™ follow. The presentations will be available at the Company’s website at https://kaleido.com/publications-and-presentations/.

Abstract Title: A randomized, double-blind study to evaluate the safety and tolerability of KB174, a novel synthetic glycan, in patients with well-compensated cirrhosis (Poster #4204)
Lead Author: Bal Raj Bhandari, M.D., Principal Investigator, Delta Research Partners LLC, Monroe, Louisiana.

Abstract Title: Microbiome Metabolic Therapies reduce microbiota-associated ammonia in ex vivo fecal samples from healthy subjects and patients with minimal hepatic encephalopathy and demonstrate improved tolerability over lactulose in a clinical study (Poster #4015)
Lead Author: Jasmohan Bajaj, M.D. Associate Professor of Medicine, Division of Gastroenterology, Hepatology, and Nutrition at Virginia Commonwealth University and McGuire VA Medical Center in Richmond, Virginia.

Abstract Title: KB174 reduces relative abundance of multidrug-resistant (MDR) Enterobacteriaceae in fecal samples from patients with cirrhosis in an ex vivo test system (Poster #4178)
Lead Author: Jasmohan Bajaj, M.D.

Key Highlights

  • In a clinical study of patients with cirrhosis, treatment with KB174 was associated with a 26 percent median reduction in urinary 15N excretion, a biomarker of microbiome ammonia production, and was well tolerated with no clinically significant safety signals observed.

  • In a separate clinical study of healthy subjects, KB174 was better tolerated than lactulose, the standard of care treatment for HE, based on several measures. In an ex vivo study evaluating microbiome samples of patients with minimal hepatic encephalopathy (MHE) and healthy subjects, KB174 demonstrated significantly greater reductions in net ammonia compared to lactulose (healthy: 55% vs 41% reduction compared with control group; MHE: 37% vs 25% reduction).

  • KB174 also led to significant decreases in the relative abundance of carbapenem-resistant E. coli and Enterobacteriaceae in both healthy and cirrhotic patient microbiome samples ex vivo, supporting its potential to reduce the risk of pathogenic infection in susceptible populations. In addition, a greater reduction in relative abundance of Enterobacteriaceae was seen in 68% (17 of 25) of samples from cirrhosis patients when incubated with KB174 compared with lactulose.