Patients with EOC with BRCAmut and/or HRD had an ORR of 30.4% (seven of 23 patients), with a CR rate of 8.7%...In conclusion, pamiparib in combination with tislelizumab showed evidence of antitumour activity in patients with advanced solid tumours, particularly those with BRCAmut and/or HRD tumours, with a manageable safety profile in keeping with the class of agents. This study supports further investigation of this combination strategy, particularly in patients with TNBC with BRCAmut and/or HRD.