ProNAi Therapeutics Added to NASDAQ Biotechnology Index

VANCOUVER, Dec 18, 2015 /PRNewswire/ - ProNAi Therapeutics, Inc. (NASDAQ: DNAI), a clinical-stage oncology company pioneering a novel class of therapeutics based on its proprietary DNAi technology platform, today announced that the company has been selected for addition to the NASDAQ Biotechnology Index (NASDAQ: NBI) effective Monday, December 21, 2015.

The NBI 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 (ICB). Companies in the NBI must meet eligibility requirements, including minimum market capitalization, average daily trading volume, and seasoning as a public company, among other criteria. The index is evaluated semi-annually and serves as the basis for the iShares NASDAQ Biotechnology Index Fund.

For more information about the NASDAQ Biotechnology Index, including eligibility criteria, visit https://indexes.nasdaqomx.com/.

About ProNAi Therapeutics
ProNAi Therapeutics is a clinical-stage oncology company advancing novel therapeutics for patients with cancer and hematological diseases. ProNAi's lead product candidate, PNT2258, is based on the company's pioneering and proprietary DNAi technology platform. PNT2258 is designed to treat cancers that overexpress BCL2, an important and validated oncogene known to be dysregulated in many types of cancer. ProNAi is pursuing a multi-faceted clinical development strategy designed to efficiently achieve regulatory approval and maximize the commercial opportunity of PNT2258. ProNAi is enrolling patients in "Wolverine", a Phase 2 trial evaluating PNT2258 for the treatment of relapsed or refractory diffuse large B-cell lymphoma, and in "Brighton", a Phase 2 trial evaluating PNT2258 for the treatment of Richter's transformation. For more information, please visit www.pronai.com.

Cautionary Note on Forward-Looking Statements
This press release contains forward-looking statements within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995, including, but not limited to, statements regarding ProNAi's anticipated clinical development and potential business development strategies. All statements other than statements of historical fact are statements that could be deemed forward-looking statements. These statements are based on management's current expectations and beliefs and are subject to a number of risks, uncertainties and assumptions that could cause actual results to differ materially from those described in the forward-looking statements. Such forward-looking statements are subject to risks and uncertainties, including, among others, the risk that ProNAi may be unable to successfully develop and commercialize PNT2258 or any other future product candidates, PNT2258 may fail to demonstrate safety and efficacy or may not otherwise produce positive results, ProNAi may experience delays in clinical trials, including due to difficulties enrolling patients, ProNAi's third-party manufacturers may cause its supply of materials to become limited or interrupted or fail to be of satisfactory quantity or quality, ProNAi's cash resources may be insufficient to fund its current operating plans and it may be unable to raise additional capital when needed, ProNAi may be unable to obtain and enforce intellectual property protection for its technologies and product candidates and the other factors described under the heading "Risk Factors" set forth in ProNAi's filings with the Securities and Exchange Commission from time to time, including the Company's reports filed with the Securities and Exchange Commission. ProNAi undertakes no obligation to update the forward-looking statements contained herein or to reflect events or circumstances occurring after the date hereof, other than as may be required by applicable law.

SOURCE ProNAi Therapeutics Inc.