HONG KONG – Aeterna Zentaris Inc. and Sinopharm A-think Pharmaceuticals Co. Ltd. signed an exclusive license and technology transfer agreement allowing Sinopharm A-think to develop, manufacture and commercialize Aeterna Zentaris' zoptarelin doxorubicin (AEZS-1-8) in China, Hong Kong and Macau. The drug is being developed to treat endometrial cancer.