 SAN MATEO, Calif.--BUSINESS WIRE--Sierra Oncology, Inc. NASDAQ: SRRA, a late-stage biopharmaceutical company dedicated to delivering targeted therapies for rare cancers, today announced the company will participate in the 2022 B. Riley Securities Oncology Investor Conference being held virtually from January 27-28, 2022. President and Chief Executive Officer Stephen Dilly, MBBS, PhD, will provide an overview of the company at 2:30 pm ET on Friday, January 28, 2022. A replay of the presentat 