AstraZeneca, Rigel ink $1.25 bln drug pact By: MarketWatch February 16, 2010 at 03:35 AM EST AstraZeneca reaches a deal to pay Rigel Pharmaceuticals up to $1.25 billion before royalties to license a drug used to treat rheumatoid arthritis. Read More >> Related Stocks: Astrazeneca Plc ADR Rigel Pharmaceuticals