A Phase III Study of HMPL-760 Plus R-GemOx VS Placebo Plus R-GemOx in Relapsed/Refractory DLBCL

Inclusion Criteria: 1. Sign the ICF and be able to follow the requirements of study protocol; 2. Age ≥18 years; 3. ECOG performance status score between 0 and 2; 4. Histopathologically confirmed diagnosis of DLBCL; 5. The investigator judges that the patient's current condition requires further treatment; 6. Patients should have at least one bi-dimensionally measurable lesion; 7. Expected survival is more than 12 weeks; Exclusion Criteria: 1. Patients with known primary or secondary central nervous system lymphoma (CNSL) or the presence of clinical symptoms suggestive of CNSL; 2. Women who are pregnant (positive pregnancy test during the screening period) or breastfeeding; 3. Organ insufficiency; 4. Currently known history of liver disease, including cirrhosis, alcoholic liver, known active infection with human immunodeficiency virus (HIV), hepatitis B virus (HBV), or hepatitis C virus (HCV); 5. History of significant organ bleeding, including gastrointestinal bleeding, hematencephalon, haemoptysis, etc., within 8 weeks prior to the first dose of study drug; 6. Known risk of bleeding, such as coagulation factor deficiency, vascular hemophilia; or the patient is receiving vitamin K antagonist (warfarin); 7. The toxic reactions of previous anti-tumor therapy have not recovered to the level of ≤ grade 1 (except for alopecia and decreased appetite and other conditions that have been clearly required in the inclusion and exclusion criteria); 8. Clinically significant active infection;