Dicerna to Announce Fourth Quarter and Full Year 2014 Financial Results and Host Conference Call on March 12, 2015

Dicerna Pharmaceuticals, Inc. (NASDAQ: DRNA), a leader in the development of RNAi-based therapeutics, today announced that the Company will release its fourth quarter and full year 2014 financial results after market close on Thursday, March 12, 2015.

Management will conduct a conference call at 4:30 p.m. ET that day to discuss the Company's financial results and provide a general business update. The conference call will be webcast live over the Internet and can be accessed by logging on to the "Investors & Media" section of the Dicerna Pharmaceuticals website, www.dicerna.com, prior to the event. The webcast will also be archived on the Company's website.

The call can also be accessed by dialing (855)-453-3834 or (484) 756-4306 (international), and referencing conference ID 85714307 prior to the start of the call. A replay of the call will be available beginning at 7:30 p.m. ET on March 12, 2015. To access the replay, please dial 855-859-2056 or 404-537-3406, and refer to conference ID 85714307.

About Dicerna Pharmaceuticals

Dicerna 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 historically been difficult to inhibit 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. For more information, please visit www.dicerna.com.