Annual report pursuant to Section 13 and 15(d)

SIGNIFICANT CONCENTRATIONS

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SIGNIFICANT CONCENTRATIONS
12 Months Ended
Dec. 31, 2013
SIGNIFICANT CONCENTRATIONS  
SIGNIFICANT CONCENTRATIONS

3. SIGNIFICANT CONCENTRATIONS

        For the year ended December 31, 2013, AZ and Daiichi accounted for 80% and 20% of our revenues, respectively. For the year ended December 31, 2012, AZ, Daiichi and BerGenBio accounted for 44%, 33% and 22% of our revenues, respectively. For the year ended December 31, 2011, Merck Serono and BerGenBio accounted for 89% and 11% of our revenues, respectively. At December 31, 2013, we had accounts receivable of $5.8 million from AZ. We had no accounts receivable at December 31, 2012.