RESUMO
AIM: Lustrombopag has been approved for the treatment of thrombocytopenia in patients with chronic liver diseases who are scheduled to undergo an invasive procedure. Here, we report the final results of a post-marketing surveillance assessing the safety and effectiveness of lusutrombopag in Japan. METHODS: This multicenter, prospective, real-world surveillance collected data from case report forms between October 2016 and May 2021. The observation period was 2 months after the first day of lusutrombopag treatment. Safety and effectiveness (proportion of patients avoiding preoperative platelet transfusion and responders who achieved platelet count increase from baseline) were assessed. RESULTS: The safety analysis set included 1033 (100.0%), 130 (12.6%), and 14 (1.4%) patients who received one or more, two or more, and three or more treatment cycle(s), and 482 (48.9%), 457 (46.3%), and 43 (4.4%) patients who were Child-Pugh class A, B, and C, respectively. The most common serious adverse drug reactions were portal vein thrombosis, pancytopenia, and white blood cell count decrease, reported in 14 (1.36%), three (0.29%), and two (0.19%) patients, respectively. The incidence of adverse drug reactions was not higher in patients with Child-Pugh class C or those undergoing retreatment cycles compared with other Child-Pugh classes or the first treatment cycle, respectively. During the observation period of the first treatment cycle, 94.7% (889/939) of patients avoided preoperative platelet transfusion and 82.8% (741/895) of the patients met the responder criteria. CONCLUSIONS: This surveillance study further supports the safety and effectiveness of lusutrombopag in a broad range of patients with chronic liver diseases undergoing planned invasive procedures. CLINICAL TRIAL REGISTRATION: JapicCTI-163432.
