[ET Net News Agency, 28 December 2021] CStone Pharmaceuticals (02616) said the new drug
application (NDA) of first-in-class precision therapy AYVAKIT (avapritinib) has been
approved in Hong Kong, China for the treatment of adult patients with unresectable or
metastatic gastrointestinal (GI) stromal tumour (GIST) harbouring a PDGFRA D842V mutation.
The drug is the first precision therapy approved in Hong Kong, China for the treatment of
patients with PDGFRA D842V mutant GIST.
Discovered by CStone's partner Blueprint Medicines Corporation (NASDAQ: BPMC) (Blueprint
Medicines), AYVAKIT is a potent, selective and orally available inhibitor of KIT and
PDGFRA mutant kinases. CStone has an exclusive collaboration and licence agreement with
Blueprint Medicines for the development and commercialization of AYVAKIT and certain other
drug candidates in mainland China, Hong Kong, Macau and Taiwan. Blueprint Medicines
retains development and commercial rights for AYVAKIT in the rest of the world. (RC)