WOBURN, Mass.--(BUSINESS WIRE)--ArQule, Inc. (Nasdaq: ARQL) today announced the initiation of a Phase 2, single agent trial with ARQ 197 in gastric cancer by Kyowa Hakko Kirin, its exclusive licensee for the development and commercialization of ARQ 197 in the Asian territory consisting of Japan, China (including Hong Kong), South Korea and Taiwan. Initiation of this trial will trigger a $5 million milestone payment to ArQule from Kyowa Hakko Kirin.