Alnylam Submits CTA Application for ALN-HSD, an Investigational RNAi Therapeutic for the Treatment of Nonalcoholic Steatohepatitis (NASH)

– Company Expects to Initiate a Phase 1 Study in Late 2020 –

CAMBRIDGE, MA, USA I August 03, 2020 IAlnylam Pharmaceuticals, Inc. (Nasdaq: ALNY), the leading RNAi therapeutics company, announced today that the Company has submitted a clinical trial authorization (CTA) application to The Medicines and Healthcare Products Regulatory Agency (MHRA) in the United Kingdom to initiate a Phase 1 study of ALN-HSD, an investigational RNAi therapeutic targeting HSD17B13 for the treatment of nonalcoholic steatohepatitis (NASH). The Company plans to initiate a Phase 1 study in late 2020, upon obtaining MHRA approval.

“We are excited to advance our ALN-HSD program to the clinic in partnership with Regeneron, particularly given the mass prevalence and high unmet need in NASH, a progressive disease associated with high morbidity and mortality. Given the genetic validation of the target, we believe ALN-HSD has the potential to change the course of this serious and potentially life-threatening disease for which there are currently no approved pharmacologic treatment options,” said David Erbe, Ph.D., Senior Distinguished Investigator, Program Leader, ALN-HSD program at Alnylam. “Pending feedback from the MHRA, we look forward to initiating the Phase 1 study to evaluate the safety and preliminary pharmacodynamic activity of ALN-HSD in healthy volunteers and patients with NASH.”


ALN-HSD is an investigational, subcutaneously administered RNAi therapeutic targeting HSD17B13 in development in collaboration with Regeneron Pharmaceuticals for the treatment of nonalcoholic steatohepatitis. ALN-HSD utilizes Alnylam's Enhanced Stabilization Chemistry Plus (ESC+) GalNAc-conjugate technology, which enables subcutaneous dosing with increased selectivity and a wide therapeutic index. The safety and efficacy of ALN-HSD have not been evaluated by the FDA, EMA or any other health authority.

About NASH

Nonalcoholic steatohepatitis (NASH) is a highly prevalent chronic liver disease in which inflammation and liver cell injury are caused by accumulation of hepatic fat. NASH is a subset of a group of conditions called nonalcoholic fatty liver disease (NAFLD) that can lead to progressive fibrosis, cirrhosis, and hepatocellular carcinoma. Comorbidities include obesity, metabolic syndrome, and type 2 diabetes. Approximately 16 million people in the US live with NASH, with prevalence of the disease increasing due to rising rates of obesity. NASH is projected to be the leading indication for liver transplants in developed countries within the next 10 years. There are currently no approved medical therapies for NASH.

About RNAi

RNAi (RNA interference) is a natural cellular process of gene silencing that represents one of the most promising and rapidly advancing frontiers in biology and drug development today. Its discovery has been heralded as "a major scientific breakthrough that happens once every decade or so," and was recognized with the award of the 2006 Nobel Prize for Physiology or Medicine. By harnessing the natural biological process of RNAi occurring in our cells, a new class of medicines, known as RNAi therapeutics, is now a reality. Small interfering RNA (siRNA), the molecules that mediate RNAi and comprise Alnylam's RNAi therapeutic platform, function upstream of today’s medicines by potently silencing messenger RNA (mRNA) – the genetic precursors – that encode for disease-causing or disease pathway proteins, thus preventing them from being made. This is a revolutionary approach with the potential to transform the care of patients with genetic and other diseases.

About Alnylam Pharmaceuticals

Alnylam (Nasdaq: ALNY) is leading the translation of RNA interference (RNAi) into a whole new class of innovative medicines with the potential to transform the lives of people afflicted with rare genetic, cardio-metabolic, hepatic infectious, and central nervous system (CNS)/ocular diseases. Based on Nobel Prize-winning science, RNAi therapeutics represent a powerful, clinically validated approach for the treatment of a wide range of severe and debilitating diseases. Founded in 2002, Alnylam is delivering on a bold vision to turn scientific possibility into reality, with a robust RNAi therapeutics platform. Alnylam’s commercial RNAi therapeutic products are ONPATTRO® (patisiran), approved in the U.S., EU, Canada, Japan, Brazil, and Switzerland, and GIVLAARI® (givosiran), approved in the U.S., EU, and Brazil. Alnylam has a deep pipeline of investigational medicines, including six product candidates that are in late-stage development. Alnylam is executing on its "Alnylam 2020" strategy of building a multi-product, commercial-stage biopharmaceutical company with a sustainable pipeline of RNAi-based medicines to address the needs of patients who have limited or inadequate treatment options. Alnylam is headquartered in Cambridge, MA. For more information about our people, science and pipeline, please visit and engage with us on Twitter at @Alnylam or on LinkedIn.

SOURCE: Alnylam Pharmaceuticals

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