Zai Lab and Pfizer announced a strategic collaboration for Xacduro (sulbactam-durlobactam) in mainland China

Through this collaboration, Zai Lab will leverage the industry-leading commercialization infrastructure of Pfizer’s affiliated companies in the anti-infective therapeutic area to help accelerate access to this important therapy for patients in need in mainland China. The period of collaboration is for the imported product through November 2028, subject to early termination or extension.

Xavduro is the only antimicrobial agent specifically developed for the treatment of carbapenem-resistant Acinetobacter baumannii (CRAB). It has been approved in the United States and in mainland China for the treatment of adult patients with hospital-acquired bacterial pneumonia and ventilator-associated bacterial pneumonia (HABP/VABP) caused by susceptible isolates of Acinetobacter baumannii-calcoaceticus complex. The Centers for Disease Control and Prevention (CDC) has identified carbapenem-resistant micro-organisms as an urgent threat. Globally, Acinetobacter baumannii was among the top six leading pathogens for deaths associated with resistance in 2019, and CRAB is included in the highest priority category, the Critical Group category, in the list of bacterial priority pathogens published by the World Health Organization (WHO) in 2024. In China, Acinetobacter baumannii was the leading cause of death attributable to antimicrobial resistance according to the global burden of disease study 2019 . Approximately 300,000 Acinetobacter baumannii isolates were reported in mainland China in 2022 .Treatment options for HABP/VABP caused by CRAB infections are limited, and prior to approval of Xacduro, there remains a lack of gold-standard therapy for CRAB infections⁷.

“Drug resistance is becoming increasingly serious, with high clinical mortality rate and poor prognosis in critically ill patients, resulting in a serious disease burden. According to recent surveillance data from China, resistance of Acinetobacter baumannii to the carbapenem class of antibiotics has reached approximately 74%,” said Josh Smiley, President and Chief Operating Officer of Zai Lab. “Zai Lab was instrumental in the development of acduro leading to its approval in China earlier this year. By joining forces with Pfizer, we seek to bring this innovative treatment to Chinese patients more quickly, saving the lives of those most at risk.”