Alnylam to Webcast Presentation at 38th Annual J.P. Morgan Healthcare Conference

Alnylam Pharmaceuticals, Inc. (Nasdaq: ALNY), the leading RNAi therapeutics company, announced today that management will present a company overview at the 38^th Annual J.P. Morgan Healthcare Conference on Monday, January 13, 2020 at 10:30 am PT (1:30 pm ET) at The Westin St. Francis in San Francisco. This presentation will include an update on unaudited fourth quarter and full year 2019 global net product revenues. In addition, the Company will webcast the Q&A breakout session immediately following its presentation at 11:00 am PT (2:00 pm ET).

A live audio webcast of both the presentation and breakout session will be available on the Investors section of the Company's website, www.alnylam.com. A replay will be available on the Alnylam website within 48 hours after the event.

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 discovery platform. Alnylam's commercial RNAi therapeutic products are ONPATTRO^® (patisiran), approved in the U.S., EU, Canada, Japan, and Switzerland, and GIVLAARItm (givosiran), approved in the U.S. Alnylam has a deep pipeline of investigational medicines, including five product candidates that are in late-stage development. Looking forward, Alnylam will continue to execute 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 employs over 1,200 people worldwide and is headquartered in Cambridge, MA. For more information about our people, science and pipeline, please visit www.alnylam.com and engage with us on Twitter at @Alnylam or on LinkedIn.