CXCR2 and neoplasm: An ongoing clinical trial will evaluate the safety and tolerability of a CXCR1/CXCR2 inhibitor in combination with anti-PD1 as a maintenance therapy in patients with metastatic pancreatic ductal adenocarcinoma and will also assess the immunophenotypic and stromal changes to the tumor microenvironment after treatment (NCT04477343).