Findings support positive proof of mechanism, through successful degradation of methionine, precursor to homocysteine, using dietary disease model in preclinical models and healthy volunteer study
SYNB1353 was well-tolerated, with similar proportions in both the placebo and active arms reporting mild-moderate gastrointestinal adverse events
CAMBRIDGE, Mass., Feb. 02, 2024 (GLOBE NEWSWIRE) -- Synlogic, Inc. (Nasdaq: SYBX), a biopharmaceutical company advancing novel therapeutics to transform the care of serious diseases, announced today the publication of a manuscript detailing the development and activity of SYNB1353 in preclinical models and demonstrating safety, tolerability, and clinical proof of mechanism in healthy volunteers through the successful lowering of methionine (Met), a precursor to homocysteine, in a dietary model of classical homocystinuria (HCU).
Among findings outlined in the manuscript, SYNB1353 efficiently degraded both dietary and entero-recirculating methionine to prevent its absorption and subsequent conversion to homocysteine in preclinical models, suggesting that SYNB1353 should result in lowering of plasma homocysteine levels in HCU patients. In addition, in results from the clinical study in healthy volunteers, SYNB1353 was generally well-tolerated and adverse events were mild to moderate, transient, and predominantly gastrointestinal in nature. The proportion of subjects reporting gastrointestinal events were similar for the SYNB1353 and placebo cohorts (36.4% and 37.5%, respectively).
"Given the significant disease burden and acute need for new treatment options for those affected by classical HCU, we are pleased to share these findings that highlight the potential of our novel approach, which targets methionine, an amino acid that has long been validated as a therapeutic target in classical HCU through the use of dietary restrictions," said Mylène Perreault, Ph.D., Head of Research at Synlogic. "Importantly, the SYNB1353 program has built on learnings and progress from our other rare metabolic disease programs, including the design of the potential therapeutic, the preclinical research and the advancement in clinical development."
The publication, entitled "The Live Biotherapeutic SYNB1353 Decreases Plasma Methionine via Directed Degradation in Animal Models and Healthy Volunteers," and published in the peer-reviewed journal, Cell Host & Microbe, is now available online at https://www.sciencedirect.com/science/article/pii/S193131282400009X.
About Classical Homocystinuria (HCU) & SYNB1353
Classical homocystinuria (HCU) is a rare metabolic disease characterized by extreme levels of homocysteine caused by an inherited deficiency in the cystathionine beta-synthase (CBS) enzyme. When CBS is absent, homocysteine builds up, putting patients at risk of multisystem complications, including potentially life-threatening, acute thromboembolic events, optical damage from lens dislocation, skeletal deficiencies, and neurocognitive impairments. Methionine (Met), an essential amino acid in dietary protein, is a precursor to homocysteine, and a restrictive, low-Met diet is a standard treatment for lowering total homocysteine (tHcy). SYNB1353 is a novel, orally administered, non-systemically absorbed drug candidate designed to consume Met in the gastrointestinal tract, thereby lowering homocysteine levels in patients with HCU. It is the first drug candidate developed through a research collaboration between Synlogic and Ginkgo Bioworks and the first investigational medicine developed on Ginkgo's platform to enter the clinic. The U.S. Food and Drug Administration (FDA) has granted Rare Pediatric Disease Designation, Fast Track designation and Orphan Drug Designation (ODD) to SYNB1353 for the potential treatment of HCU. Synlogic holds worldwide development and commercialization rights to SYNB1353.
About Synlogic
Synlogic is a biopharmaceutical company advancing novel therapeutics to transform the care of serious diseases in need of new treatment options. The Company focuses on rare metabolic diseases, with its lead program, labafenogene marselecobac (SYNB1934), currently being studied in Synpheny-3, a global, pivotal Phase 3 study for patients with phenylketonuria (PKU), and SYNB1353, a potential treatment for classical homocystinuria (HCU). Both PKU and HCU are caused by inborn errors of metabolism, and present significant need for innovation due to limitations of today's medical treatment options.
Synlogic's early-stage pipeline includes research and development on product candidates addressing medical needs in enteric hyperoxaluria, gout, cystinuria, as well as inflammatory bowel disease (IBD). The Company's productivity is fueled by a reproducible, proprietary approach that creates new enzymatic pathways designed to consume or produce specific biological targets provided in GI-restricted, orally administered biopharmaceuticals. Synlogic designs, develops and manufactures these drug candidates, which are produced by applying precision genetic engineering to well-characterized probiotics. For more information, please visit www.synlogictx.com or follow us on Twitter, LinkedIn, Facebook, Instagram, and YouTube.
Forward Looking Statements
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