Customer and Geographic Concentrations

12 Months Ended

Dec. 31, 2018

15. Customer and Geographic Concentrations

We consider our operations to be a single operating segment focused on the development, acquisition and commercialization of novel treatments for cancer. Financial results of this reportable segment are presented in the accompanying consolidated financial statements.

All sales of PIXUVRI during the year presented were in Europe. Product sales from PIXUVRI’s major customers as a percentage of total product sales were as follows:



	Year Ended
	December 31, 2017
Customer A	61	%
Customer B	24	%
Customer C	13	%

In April 2017, we granted Servier an exclusive and sublicensable (subject to certain conditions) royalty-bearing license with respect to the development and commercialization of PIXUVRI for use in pharmaceutical products outside of the U.S. (and its territories and possessions). As a result, we no longer have product sales. See Note 10. Collaboration, Licensing and Milestone Agreements for further details.

We had no long-lived assets located outside of the U.S. as of December 31, 2018 and 2017.