Dicerna Announces Addition to NASDAQ Biotechnology Index

Dicerna Pharmaceuticals, Inc. (NASDAQ: DRNA), a leading developer of RNA interference (RNAi) therapeutics, today announced that the Company has been selected for addition to the NASDAQ Biotechnology Index (NASDAQ:NBI), effective upon market open on December 21, 2015.

The NASDAQ Biotechnology Index is designed to track the performance of a set of securities listed on The NASDAQ Stock Market® that are classified as either biotechnology or pharmaceutical according to the Industry Classification Benchmark. These companies must meet eligibility requirements, including minimum market capitalization, average daily trading volume, and seasoning as a public company, among other criteria. For more information about the NASDAQ Biotechnology Index visit www.nasdaq.com.

About Dicerna
Dicerna Pharmaceuticals, Inc., is a biopharmaceutical company focused on the discovery and development of innovative treatments for rare, inherited diseases involving the liver and for cancers that are genetically defined. The company is using its proprietary RNA interference (RNAi) technology platform to build a broad pipeline in these therapeutic areas. In both rare diseases and oncology, Dicerna is pursuing targets that have been difficult to address using conventional approaches, but where connections between targets and diseases are well understood and documented. The company intends to discover, develop and commercialize novel therapeutics either on its own or in collaboration with pharmaceutical partners.

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