Frontline of ASCT in High-risk DLBCL

Inclusion Criteria: * Previously untreated participants with cluster of differentiation 20 (CD20)-positive DLBCL, including one of the following diagnoses by 2016 World Health Organization (WHO) classification of lymphoid neoplasms: DLBCL, not otherwise specified (NOS) including germinal center B-cell type, activated B-cell type; T-cell/histiocyte-rich large B-cell lymphoma; Epstein-Barr virus-positive DLBCL, NOS; anaplastic lymphoma kinase (ALK)-positive large B-cell lymphoma; human herpesvirus-8 (HHV8)-positive DLBCL, NOS; High-grade B-cell lymphoma with MYC and B-cell lymphoma 2 (BCL2) and/or B-cell lymphoma 6 (BCL6) rearrangements (double-hit or triple-hit lymphoma); High-grade B-cell lymphoma, NOS * Measurable tumor assessed by Lugano Response Criteria * International Prognostic Index (IPI) score equal to or greater than 3 points * Adequate hematologic function * Adequate liver function * Adequate kidney function * Left ventricular ejection fraction (LVEF) \>/= 50 percent (%) on cardiac echocardiogram (ECHO) Exclusion Criteria: * Contraindication to any of the individual components of CHOP, including prior receipt of anthracyclines * Participants with central nervous system (CNS) lymphoma (primary or secondary involvement) * History of other malignancy that could affect compliance with the protocol or interpretation of results