Feb 9 (Reuters) - Sierra Oncology Inc SRRA.O
* Sierra oncology announces pricing of public offering of common stock
* Says public offering of 19.5 million common shares priced at $1.35per share
* Says public offering of 19.5 million common shares priced at $1.35per share Source text for Eikon: ID:nCNWYT4gNa Further company coverage: SRRA.O