| Active Comparator Arm A (DA-EPOCH-R)
 | See Detailed Description | 
                                                        
                                Procedure:                                 Biospecimen CollectionUndergo blood and CSF sample collection
 Other names:
 
                                                                                                                    Biological Sample CollectionBiospecimen CollectedSpecimen Collection
                                Procedure:                                 Bone Marrow AspirationUndergo bone marrow biopsy and aspiration
 
                                Procedure:                                 Bone Marrow BiopsyUndergo bone marrow biopsy and aspiration
 Other names:
 
                                                                                                                    Biopsy of Bone MarrowBiopsy, Bone Marrow
                                Procedure:                                 Computed TomographyUndergo CT or PET/CT
 Other names:
 
                                                                                                                    CATCAT ScanComputed Axial TomographyComputerized Axial TomographyComputerized axial tomography (procedure)Computerized TomographyComputerized Tomography (CT) scanCTCT ScanDiagnostic CAT ScanDiagnostic CAT Scan Service Typetomography
                                Drug:                                 CyclophosphamideGiven IV
 Other names:
 
                                                                                                                    (-)-Cyclophosphamide2H-1,3,2-Oxazaphosphorine, 2-[bis(2-chloroethyl)amino]tetrahydro-, 2-oxide, monohydrateAsta B 518B 518B-518B518CarloxanCiclofosfamidaCiclofosfamideCicloxalClafenClapheneCP monohydrateCTXCYCLO-cellCycloblastinCycloblastineCyclophosphamCyclophosphamid monohydrateCyclophosphamide MonohydrateCyclophosphamidumCyclophosphanCyclophosphaneCyclophosphanumCyclostinCyclostineCytophosphanCytophosphaneCytoxanFosfaseronGenoxalGenuxalLedoxinaMitoxanNeosarRevimmuneSyklofosfamidWR 138719WR- 138719WR-138719WR138719
                                Drug:                                 Doxorubicin HydrochlorideGiven IV
 Other names:
 
                                                                                                                    5,12-Naphthacenedione, 10-[(3-amino-2,3,6-trideoxy-alpha-L-lyxo-hexopyranosyl)oxy]-7,8, 9,10-tetrahydro-6,8,11-trihydroxy-8-(hydroxyacetyl)-1-methoxy-, hydrochloride, (8S-cis)- (9CI)ADMAdriacinAdriamycinAdriamycin HydrochlorideAdriamycin PFSAdriamycin RDFADRIAMYCIN, HYDROCHLORIDEAdriamycineAdriblastinaAdriblastineAdrimedacChloridrato de DoxorrubicinaDOXDOXO-CELLDoxolemDoxorubicin HClDoxorubicin.HClDoxorubinFarmiblastinaFI 106FI-106FI106hydroxydaunorubicinRubex
                                Procedure:                                 Echocardiography TestUndergo ECHO
 Other names:
                                Drug:                                 Etoposide PhosphateGiven IV
 Other names:
                                Biological:                                 FilgrastimGiven SC
 Other names:
 
                                                                                                                    Filgrastim Biosimilar Filgrastim-sndzFilgrastim Biosimilar Tbo-filgrastimFilgrastim XM02Filgrastim-aafiFilgrastim-ayowFilgrastim-sndzG-CSFGranixNeupogenNeutrovalNivestimNivestymr-metHuG-CSFRecombinant Methionyl Human Granulocyte Colony Stimulating FactorReleukorG-CSFTbo-filgrastimTevagrastimXM02Zarxio
                                Procedure:                                 Lumbar PunctureUndergo LP
 Other names:
                                Biological:                                 PegfilgrastimGiven SC
 Other names:
 
                                                                                                                    DulastinFilgrastim SD-01filgrastim-SD/01FulphilaFylnetraG-LastaHSP-130JinyouliNeulastaNeulastimNeupopegNyvepriaPEG-filgrastimPegcytePegfilgrastim Biosimilar HSP-130Pegfilgrastim Biosimilar NyvepriaPegfilgrastim Biosimilar PegcytePegfilgrastim Biosimilar PF-06881894Pegfilgrastim Biosimilar UdenycaPegfilgrastim Biosimilar ZiextenzoPegfilgrastim-apgfPegfilgrastim-bmezPegfilgrastim-cbqvPegfilgrastim-fpgkPegfilgrastim-jmdbPegfilgrastim-pbbkPegylated G-CSFPegylated GCSFPegylated Granulocyte Colony Stimulating FactorPF-06881894SD-01SD-01 sustained duration G-CSFStimufendTripegfilgrastimUdenycaZiextenzo
                                Procedure:                                 Positron Emission TomographyUndergo PET/CT
 Other names:
 
                                                                                                                    Medical Imaging, Positron Emission TomographyPETPET ScanPositron emission tomography (procedure)Positron Emission Tomography ScanPositron-Emission TomographyPT
                                Drug:                                 PrednisoloneGiven PO
 Other names:
 
                                                                                                                    (11beta)-11,17,21-Trihydroxypregna-1,4-diene-3,20-dione.delta.1-HydrocortisoneAdnisoloneAprednislonCapsoidCortaloneCortisoloneDacortin HDecaprednilDecortin HDelta(1)HydrocortisoneDelta- CortefDelta-CortefDelta-DionaDelta-FDelta-PhoricolDelta1-dehydro-hydrocortisoneDeltacortrilDeltahydrocortisoneDeltasoloneDeltidrosolDhasoloneDi-Adreson-FDontisolon DEstilsonaFisopredFrisolonaGupisoneHostacortin HHydeltraHydeltrasolKlismacortKuhlprednonLenisoloneLepi-CortinoloLinola-H NLinola-H-Fett NLongiprednilMetacortandraloneMeti DermMeticorteloneOpredsonePanafcortelonePrecortisylPred-ClysmaPredeltilonePredni-CoelinPredni-HelvacortPrednicortelonePrednisolonumPrelonePreniloneSterane
                                Drug:                                 PrednisoneGiven PO
 Other names:
 
                                                                                                                    .delta.1-Cortisone1, 2-DehydrocortisoneAdasoneCortancylDacortinDeCortinDecortisylDecortonDelta 1-CortisoneDelta-DomeDeltacorteneDeltacortisoneDeltadehydrocortisoneDeltasoneDeltisonDeltraEconosoneLisacortMeprosona-FMetacortandracinMeticortenOfisolonaOrasonePanafcortPanasol-SParacortPerrigo PrednisonePREDPredicorPredicortenPrednicen-MPrednicortPrednidibPrednilongaPrednimentPrednisone IntensolPrednisonumPrednitonePromifenRayosServisoneSK-Prednisone
                                Biological:                                 RituximabGiven IV
 Other names:
 
                                                                                                                    ABP 798ABP-798ABP798BI 695500BI-695500BI695500BlitzimaC2B8 Monoclonal AntibodyChimeric Anti-CD20 AntibodyCT P10CT-P10CTP10GP 2013GP-2013GP2013IDEC 102IDEC-102IDEC-C2B8IDEC-C2B8 Monoclonal AntibodyIDEC102IkgdarMabtasMabTheraMonoclonal Antibody IDEC-C2B8PF 05280586PF-05280586PF05280586RiabniRitemviaRituxanRituximab ABBSRituximab ARRXRituximab Biosimilar ABP 798Rituximab Biosimilar BI 695500Rituximab Biosimilar CT-P10Rituximab Biosimilar GB241Rituximab Biosimilar GP2013Rituximab Biosimilar IBI301Rituximab Biosimilar JHL1101Rituximab Biosimilar PF-05280586Rituximab Biosimilar RTXM83Rituximab Biosimilar SAIT101Rituximab Biosimilar SIBP-02rituximab biosimilar TQB2303Rituximab PVVRRituximab-abbsRituximab-arrxRituximab-blitRituximab-pvvrRituximab-riteRituximab-rixaRituximab-rixiRixathonRiximyoRTXM 83RTXM-83RTXM83RuxienceTruxima
                                Biological:                                 Rituximab and Hyaluronidase HumanGiven SC
 Other names:
 
                                                                                                                    Rituxan HycelaRituximab Plus HyaluronidaseRituximab/HyaluronidaseRituximab/Hyaluronidase Human
                                Drug:                                 Vincristine SulfateGiven IV
 Other names:
 
                                                                                                                    KyocristineLeurocristine SulfateLeurocristine, sulfateOncovinVincasarVincosidVincrexVincristine, sulfate | 
                            
                    | Experimental Arm B (DA-EPOCH-R, nivolumab)
 | Patients receive treatment as in Arm A. Patients also receive nivolumab IV over 30
minutes on day 1. Treatment repeats every 21 days for up to 6 cycles (5 if the patient
had 1 prior cycle of treatment) in the absence of disease progression or unacceptable
toxicity. Patients undergo ECHO and LP for CSF collection during screening. Patients
undergo ECHO during screening and as clinically indicated and LP for CSF collection
optionally during screening. Patients also undergo CT or PET/CT throughout the trial.
Additionally, patients undergo bone marrow biopsy and aspiration optionally during
screening and as clinically indicated on study. Patients undergo blood sample collection
on study. | 
                                                        
                                Procedure:                                 Biospecimen CollectionUndergo blood and CSF sample collection
 Other names:
 
                                                                                                                    Biological Sample CollectionBiospecimen CollectedSpecimen Collection
                                Procedure:                                 Bone Marrow AspirationUndergo bone marrow biopsy and aspiration
 
                                Procedure:                                 Bone Marrow BiopsyUndergo bone marrow biopsy and aspiration
 Other names:
 
                                                                                                                    Biopsy of Bone MarrowBiopsy, Bone Marrow
                                Procedure:                                 Computed TomographyUndergo CT or PET/CT
 Other names:
 
                                                                                                                    CATCAT ScanComputed Axial TomographyComputerized Axial TomographyComputerized axial tomography (procedure)Computerized TomographyComputerized Tomography (CT) scanCTCT ScanDiagnostic CAT ScanDiagnostic CAT Scan Service Typetomography
                                Drug:                                 CyclophosphamideGiven IV
 Other names:
 
                                                                                                                    (-)-Cyclophosphamide2H-1,3,2-Oxazaphosphorine, 2-[bis(2-chloroethyl)amino]tetrahydro-, 2-oxide, monohydrateAsta B 518B 518B-518B518CarloxanCiclofosfamidaCiclofosfamideCicloxalClafenClapheneCP monohydrateCTXCYCLO-cellCycloblastinCycloblastineCyclophosphamCyclophosphamid monohydrateCyclophosphamide MonohydrateCyclophosphamidumCyclophosphanCyclophosphaneCyclophosphanumCyclostinCyclostineCytophosphanCytophosphaneCytoxanFosfaseronGenoxalGenuxalLedoxinaMitoxanNeosarRevimmuneSyklofosfamidWR 138719WR- 138719WR-138719WR138719
                                Drug:                                 Doxorubicin HydrochlorideGiven IV
 Other names:
 
                                                                                                                    5,12-Naphthacenedione, 10-[(3-amino-2,3,6-trideoxy-alpha-L-lyxo-hexopyranosyl)oxy]-7,8, 9,10-tetrahydro-6,8,11-trihydroxy-8-(hydroxyacetyl)-1-methoxy-, hydrochloride, (8S-cis)- (9CI)ADMAdriacinAdriamycinAdriamycin HydrochlorideAdriamycin PFSAdriamycin RDFADRIAMYCIN, HYDROCHLORIDEAdriamycineAdriblastinaAdriblastineAdrimedacChloridrato de DoxorrubicinaDOXDOXO-CELLDoxolemDoxorubicin HClDoxorubicin.HClDoxorubinFarmiblastinaFI 106FI-106FI106hydroxydaunorubicinRubex
                                Procedure:                                 Echocardiography TestUndergo ECHO
 Other names:
                                Drug:                                 Etoposide PhosphateGiven IV
 Other names:
                                Biological:                                 FilgrastimGiven SC
 Other names:
 
                                                                                                                    Filgrastim Biosimilar Filgrastim-sndzFilgrastim Biosimilar Tbo-filgrastimFilgrastim XM02Filgrastim-aafiFilgrastim-ayowFilgrastim-sndzG-CSFGranixNeupogenNeutrovalNivestimNivestymr-metHuG-CSFRecombinant Methionyl Human Granulocyte Colony Stimulating FactorReleukorG-CSFTbo-filgrastimTevagrastimXM02Zarxio
                                Procedure:                                 Lumbar PunctureUndergo LP
 Other names:
                                Biological:                                 NivolumabGiven IV
 Other names:
 
                                                                                                                    ABP 206BCD-263BMS 936558BMS-936558BMS936558CMAB819MDX 1106MDX-1106MDX1106NIVONivolumab Biosimilar ABP 206Nivolumab Biosimilar BCD-263Nivolumab Biosimilar CMAB819ONO 4538ONO-4538ONO4538Opdivo
                                Biological:                                 PegfilgrastimGiven SC
 Other names:
 
                                                                                                                    DulastinFilgrastim SD-01filgrastim-SD/01FulphilaFylnetraG-LastaHSP-130JinyouliNeulastaNeulastimNeupopegNyvepriaPEG-filgrastimPegcytePegfilgrastim Biosimilar HSP-130Pegfilgrastim Biosimilar NyvepriaPegfilgrastim Biosimilar PegcytePegfilgrastim Biosimilar PF-06881894Pegfilgrastim Biosimilar UdenycaPegfilgrastim Biosimilar ZiextenzoPegfilgrastim-apgfPegfilgrastim-bmezPegfilgrastim-cbqvPegfilgrastim-fpgkPegfilgrastim-jmdbPegfilgrastim-pbbkPegylated G-CSFPegylated GCSFPegylated Granulocyte Colony Stimulating FactorPF-06881894SD-01SD-01 sustained duration G-CSFStimufendTripegfilgrastimUdenycaZiextenzo
                                Procedure:                                 Positron Emission TomographyUndergo PET/CT
 Other names:
 
                                                                                                                    Medical Imaging, Positron Emission TomographyPETPET ScanPositron emission tomography (procedure)Positron Emission Tomography ScanPositron-Emission TomographyPT
                                Drug:                                 PrednisoloneGiven PO
 Other names:
 
                                                                                                                    (11beta)-11,17,21-Trihydroxypregna-1,4-diene-3,20-dione.delta.1-HydrocortisoneAdnisoloneAprednislonCapsoidCortaloneCortisoloneDacortin HDecaprednilDecortin HDelta(1)HydrocortisoneDelta- CortefDelta-CortefDelta-DionaDelta-FDelta-PhoricolDelta1-dehydro-hydrocortisoneDeltacortrilDeltahydrocortisoneDeltasoloneDeltidrosolDhasoloneDi-Adreson-FDontisolon DEstilsonaFisopredFrisolonaGupisoneHostacortin HHydeltraHydeltrasolKlismacortKuhlprednonLenisoloneLepi-CortinoloLinola-H NLinola-H-Fett NLongiprednilMetacortandraloneMeti DermMeticorteloneOpredsonePanafcortelonePrecortisylPred-ClysmaPredeltilonePredni-CoelinPredni-HelvacortPrednicortelonePrednisolonumPrelonePreniloneSterane
                                Drug:                                 PrednisoneGiven PO
 Other names:
 
                                                                                                                    .delta.1-Cortisone1, 2-DehydrocortisoneAdasoneCortancylDacortinDeCortinDecortisylDecortonDelta 1-CortisoneDelta-DomeDeltacorteneDeltacortisoneDeltadehydrocortisoneDeltasoneDeltisonDeltraEconosoneLisacortMeprosona-FMetacortandracinMeticortenOfisolonaOrasonePanafcortPanasol-SParacortPerrigo PrednisonePREDPredicorPredicortenPrednicen-MPrednicortPrednidibPrednilongaPrednimentPrednisone IntensolPrednisonumPrednitonePromifenRayosServisoneSK-Prednisone
                                Biological:                                 RituximabGiven IV
 Other names:
 
                                                                                                                    ABP 798ABP-798ABP798BI 695500BI-695500BI695500BlitzimaC2B8 Monoclonal AntibodyChimeric Anti-CD20 AntibodyCT P10CT-P10CTP10GP 2013GP-2013GP2013IDEC 102IDEC-102IDEC-C2B8IDEC-C2B8 Monoclonal AntibodyIDEC102IkgdarMabtasMabTheraMonoclonal Antibody IDEC-C2B8PF 05280586PF-05280586PF05280586RiabniRitemviaRituxanRituximab ABBSRituximab ARRXRituximab Biosimilar ABP 798Rituximab Biosimilar BI 695500Rituximab Biosimilar CT-P10Rituximab Biosimilar GB241Rituximab Biosimilar GP2013Rituximab Biosimilar IBI301Rituximab Biosimilar JHL1101Rituximab Biosimilar PF-05280586Rituximab Biosimilar RTXM83Rituximab Biosimilar SAIT101Rituximab Biosimilar SIBP-02rituximab biosimilar TQB2303Rituximab PVVRRituximab-abbsRituximab-arrxRituximab-blitRituximab-pvvrRituximab-riteRituximab-rixaRituximab-rixiRixathonRiximyoRTXM 83RTXM-83RTXM83RuxienceTruxima
                                Biological:                                 Rituximab and Hyaluronidase HumanGiven SC
 Other names:
 
                                                                                                                    Rituxan HycelaRituximab Plus HyaluronidaseRituximab/HyaluronidaseRituximab/Hyaluronidase Human
                                Drug:                                 Vincristine SulfateGiven IV
 Other names:
 
                                                                                                                    KyocristineLeurocristine SulfateLeurocristine, sulfateOncovinVincasarVincosidVincrexVincristine, sulfate | 
                            
                    | Active Comparator Arm C (R-CHOP)
 | Patients receive prednisone or prednisolone PO QD on days 1-5 and rituximab IV or
rituximab and hyaluronidase human SC over 5 minutes on day 1 or 5. Patients also receive
cyclophosphamide IV over 30-60 minutes, doxorubicin hydrochloride IV over 1-15 minutes or
up to 60 minutes, and vincristine sulfate IV over 1 or up to 60 minutes on day 1.
Treatment repeats every 21 days for up to 6 cycles (5 if the patient had 1 prior cycle of
treatment) in the absence of disease progression or unacceptable toxicity. Patients
undergo ECHO during screening and as clinically indicated and LP for CSF collection
optionally during screening. Patients also undergo CT or PET/CT throughout the trial.
Additionally, patients undergo bone marrow biopsy and aspiration optionally during
screening and as clinically indicated on study. Patients undergo blood sample collection
on study. | 
                                                        
                                Procedure:                                 Biospecimen CollectionUndergo blood and CSF sample collection
 Other names:
 
                                                                                                                    Biological Sample CollectionBiospecimen CollectedSpecimen Collection
                                Procedure:                                 Bone Marrow AspirationUndergo bone marrow biopsy and aspiration
 
                                Procedure:                                 Bone Marrow BiopsyUndergo bone marrow biopsy and aspiration
 Other names:
 
                                                                                                                    Biopsy of Bone MarrowBiopsy, Bone Marrow
                                Procedure:                                 Computed TomographyUndergo CT or PET/CT
 Other names:
 
                                                                                                                    CATCAT ScanComputed Axial TomographyComputerized Axial TomographyComputerized axial tomography (procedure)Computerized TomographyComputerized Tomography (CT) scanCTCT ScanDiagnostic CAT ScanDiagnostic CAT Scan Service Typetomography
                                Drug:                                 CyclophosphamideGiven IV
 Other names:
 
                                                                                                                    (-)-Cyclophosphamide2H-1,3,2-Oxazaphosphorine, 2-[bis(2-chloroethyl)amino]tetrahydro-, 2-oxide, monohydrateAsta B 518B 518B-518B518CarloxanCiclofosfamidaCiclofosfamideCicloxalClafenClapheneCP monohydrateCTXCYCLO-cellCycloblastinCycloblastineCyclophosphamCyclophosphamid monohydrateCyclophosphamide MonohydrateCyclophosphamidumCyclophosphanCyclophosphaneCyclophosphanumCyclostinCyclostineCytophosphanCytophosphaneCytoxanFosfaseronGenoxalGenuxalLedoxinaMitoxanNeosarRevimmuneSyklofosfamidWR 138719WR- 138719WR-138719WR138719
                                Drug:                                 Doxorubicin HydrochlorideGiven IV
 Other names:
 
                                                                                                                    5,12-Naphthacenedione, 10-[(3-amino-2,3,6-trideoxy-alpha-L-lyxo-hexopyranosyl)oxy]-7,8, 9,10-tetrahydro-6,8,11-trihydroxy-8-(hydroxyacetyl)-1-methoxy-, hydrochloride, (8S-cis)- (9CI)ADMAdriacinAdriamycinAdriamycin HydrochlorideAdriamycin PFSAdriamycin RDFADRIAMYCIN, HYDROCHLORIDEAdriamycineAdriblastinaAdriblastineAdrimedacChloridrato de DoxorrubicinaDOXDOXO-CELLDoxolemDoxorubicin HClDoxorubicin.HClDoxorubinFarmiblastinaFI 106FI-106FI106hydroxydaunorubicinRubex
                                Procedure:                                 Echocardiography TestUndergo ECHO
 Other names:
                                Procedure:                                 Lumbar PunctureUndergo LP
 Other names:
                                Procedure:                                 Positron Emission TomographyUndergo PET/CT
 Other names:
 
                                                                                                                    Medical Imaging, Positron Emission TomographyPETPET ScanPositron emission tomography (procedure)Positron Emission Tomography ScanPositron-Emission TomographyPT
                                Drug:                                 PrednisoloneGiven PO
 Other names:
 
                                                                                                                    (11beta)-11,17,21-Trihydroxypregna-1,4-diene-3,20-dione.delta.1-HydrocortisoneAdnisoloneAprednislonCapsoidCortaloneCortisoloneDacortin HDecaprednilDecortin HDelta(1)HydrocortisoneDelta- CortefDelta-CortefDelta-DionaDelta-FDelta-PhoricolDelta1-dehydro-hydrocortisoneDeltacortrilDeltahydrocortisoneDeltasoloneDeltidrosolDhasoloneDi-Adreson-FDontisolon DEstilsonaFisopredFrisolonaGupisoneHostacortin HHydeltraHydeltrasolKlismacortKuhlprednonLenisoloneLepi-CortinoloLinola-H NLinola-H-Fett NLongiprednilMetacortandraloneMeti DermMeticorteloneOpredsonePanafcortelonePrecortisylPred-ClysmaPredeltilonePredni-CoelinPredni-HelvacortPrednicortelonePrednisolonumPrelonePreniloneSterane
                                Drug:                                 PrednisoneGiven PO
 Other names:
 
                                                                                                                    .delta.1-Cortisone1, 2-DehydrocortisoneAdasoneCortancylDacortinDeCortinDecortisylDecortonDelta 1-CortisoneDelta-DomeDeltacorteneDeltacortisoneDeltadehydrocortisoneDeltasoneDeltisonDeltraEconosoneLisacortMeprosona-FMetacortandracinMeticortenOfisolonaOrasonePanafcortPanasol-SParacortPerrigo PrednisonePREDPredicorPredicortenPrednicen-MPrednicortPrednidibPrednilongaPrednimentPrednisone IntensolPrednisonumPrednitonePromifenRayosServisoneSK-Prednisone
                                Biological:                                 RituximabGiven IV
 Other names:
 
                                                                                                                    ABP 798ABP-798ABP798BI 695500BI-695500BI695500BlitzimaC2B8 Monoclonal AntibodyChimeric Anti-CD20 AntibodyCT P10CT-P10CTP10GP 2013GP-2013GP2013IDEC 102IDEC-102IDEC-C2B8IDEC-C2B8 Monoclonal AntibodyIDEC102IkgdarMabtasMabTheraMonoclonal Antibody IDEC-C2B8PF 05280586PF-05280586PF05280586RiabniRitemviaRituxanRituximab ABBSRituximab ARRXRituximab Biosimilar ABP 798Rituximab Biosimilar BI 695500Rituximab Biosimilar CT-P10Rituximab Biosimilar GB241Rituximab Biosimilar GP2013Rituximab Biosimilar IBI301Rituximab Biosimilar JHL1101Rituximab Biosimilar PF-05280586Rituximab Biosimilar RTXM83Rituximab Biosimilar SAIT101Rituximab Biosimilar SIBP-02rituximab biosimilar TQB2303Rituximab PVVRRituximab-abbsRituximab-arrxRituximab-blitRituximab-pvvrRituximab-riteRituximab-rixaRituximab-rixiRixathonRiximyoRTXM 83RTXM-83RTXM83RuxienceTruxima
                                Biological:                                 Rituximab and Hyaluronidase HumanGiven SC
 Other names:
 
                                                                                                                    Rituxan HycelaRituximab Plus HyaluronidaseRituximab/HyaluronidaseRituximab/Hyaluronidase Human
                                Drug:                                 Vincristine SulfateGiven IV
 Other names:
 
                                                                                                                    KyocristineLeurocristine SulfateLeurocristine, sulfateOncovinVincasarVincosidVincrexVincristine, sulfate | 
                            
                    | Experimental Arm D (R-CHOP, nivolumab)
 | Patients receive treatment as in Arm C. Patients also receive nivolumab IV over 30
minutes on day 1. Treatment repeats every 21 days for up to 6 cycles (5 if the patient
had 1 prior cycle of treatment) in the absence of disease progression or unacceptable
toxicity. Patients undergo ECHO during screening and as clinically indicated and LP for
CSF collection optionally during screening. Patients also undergo CT or PET/CT throughout
the trial. Additionally, patients undergo bone marrow biopsy and aspiration optionally
during screening and as clinically indicated on study. Patients undergo blood sample
collection on study. | 
                                                        
                                Procedure:                                 Biospecimen CollectionUndergo blood and CSF sample collection
 Other names:
 
                                                                                                                    Biological Sample CollectionBiospecimen CollectedSpecimen Collection
                                Procedure:                                 Bone Marrow AspirationUndergo bone marrow biopsy and aspiration
 
                                Procedure:                                 Bone Marrow BiopsyUndergo bone marrow biopsy and aspiration
 Other names:
 
                                                                                                                    Biopsy of Bone MarrowBiopsy, Bone Marrow
                                Procedure:                                 Computed TomographyUndergo CT or PET/CT
 Other names:
 
                                                                                                                    CATCAT ScanComputed Axial TomographyComputerized Axial TomographyComputerized axial tomography (procedure)Computerized TomographyComputerized Tomography (CT) scanCTCT ScanDiagnostic CAT ScanDiagnostic CAT Scan Service Typetomography
                                Drug:                                 CyclophosphamideGiven IV
 Other names:
 
                                                                                                                    (-)-Cyclophosphamide2H-1,3,2-Oxazaphosphorine, 2-[bis(2-chloroethyl)amino]tetrahydro-, 2-oxide, monohydrateAsta B 518B 518B-518B518CarloxanCiclofosfamidaCiclofosfamideCicloxalClafenClapheneCP monohydrateCTXCYCLO-cellCycloblastinCycloblastineCyclophosphamCyclophosphamid monohydrateCyclophosphamide MonohydrateCyclophosphamidumCyclophosphanCyclophosphaneCyclophosphanumCyclostinCyclostineCytophosphanCytophosphaneCytoxanFosfaseronGenoxalGenuxalLedoxinaMitoxanNeosarRevimmuneSyklofosfamidWR 138719WR- 138719WR-138719WR138719
                                Drug:                                 Doxorubicin HydrochlorideGiven IV
 Other names:
 
                                                                                                                    5,12-Naphthacenedione, 10-[(3-amino-2,3,6-trideoxy-alpha-L-lyxo-hexopyranosyl)oxy]-7,8, 9,10-tetrahydro-6,8,11-trihydroxy-8-(hydroxyacetyl)-1-methoxy-, hydrochloride, (8S-cis)- (9CI)ADMAdriacinAdriamycinAdriamycin HydrochlorideAdriamycin PFSAdriamycin RDFADRIAMYCIN, HYDROCHLORIDEAdriamycineAdriblastinaAdriblastineAdrimedacChloridrato de DoxorrubicinaDOXDOXO-CELLDoxolemDoxorubicin HClDoxorubicin.HClDoxorubinFarmiblastinaFI 106FI-106FI106hydroxydaunorubicinRubex
                                Procedure:                                 Echocardiography TestUndergo ECHO
 Other names:
                                Procedure:                                 Lumbar PunctureUndergo LP
 Other names:
                                Biological:                                 NivolumabGiven IV
 Other names:
 
                                                                                                                    ABP 206BCD-263BMS 936558BMS-936558BMS936558CMAB819MDX 1106MDX-1106MDX1106NIVONivolumab Biosimilar ABP 206Nivolumab Biosimilar BCD-263Nivolumab Biosimilar CMAB819ONO 4538ONO-4538ONO4538Opdivo
                                Procedure:                                 Positron Emission TomographyUndergo PET/CT
 Other names:
 
                                                                                                                    Medical Imaging, Positron Emission TomographyPETPET ScanPositron emission tomography (procedure)Positron Emission Tomography ScanPositron-Emission TomographyPT
                                Drug:                                 PrednisoloneGiven PO
 Other names:
 
                                                                                                                    (11beta)-11,17,21-Trihydroxypregna-1,4-diene-3,20-dione.delta.1-HydrocortisoneAdnisoloneAprednislonCapsoidCortaloneCortisoloneDacortin HDecaprednilDecortin HDelta(1)HydrocortisoneDelta- CortefDelta-CortefDelta-DionaDelta-FDelta-PhoricolDelta1-dehydro-hydrocortisoneDeltacortrilDeltahydrocortisoneDeltasoloneDeltidrosolDhasoloneDi-Adreson-FDontisolon DEstilsonaFisopredFrisolonaGupisoneHostacortin HHydeltraHydeltrasolKlismacortKuhlprednonLenisoloneLepi-CortinoloLinola-H NLinola-H-Fett NLongiprednilMetacortandraloneMeti DermMeticorteloneOpredsonePanafcortelonePrecortisylPred-ClysmaPredeltilonePredni-CoelinPredni-HelvacortPrednicortelonePrednisolonumPrelonePreniloneSterane
                                Drug:                                 PrednisoneGiven PO
 Other names:
 
                                                                                                                    .delta.1-Cortisone1, 2-DehydrocortisoneAdasoneCortancylDacortinDeCortinDecortisylDecortonDelta 1-CortisoneDelta-DomeDeltacorteneDeltacortisoneDeltadehydrocortisoneDeltasoneDeltisonDeltraEconosoneLisacortMeprosona-FMetacortandracinMeticortenOfisolonaOrasonePanafcortPanasol-SParacortPerrigo PrednisonePREDPredicorPredicortenPrednicen-MPrednicortPrednidibPrednilongaPrednimentPrednisone IntensolPrednisonumPrednitonePromifenRayosServisoneSK-Prednisone
                                Biological:                                 RituximabGiven IV
 Other names:
 
                                                                                                                    ABP 798ABP-798ABP798BI 695500BI-695500BI695500BlitzimaC2B8 Monoclonal AntibodyChimeric Anti-CD20 AntibodyCT P10CT-P10CTP10GP 2013GP-2013GP2013IDEC 102IDEC-102IDEC-C2B8IDEC-C2B8 Monoclonal AntibodyIDEC102IkgdarMabtasMabTheraMonoclonal Antibody IDEC-C2B8PF 05280586PF-05280586PF05280586RiabniRitemviaRituxanRituximab ABBSRituximab ARRXRituximab Biosimilar ABP 798Rituximab Biosimilar BI 695500Rituximab Biosimilar CT-P10Rituximab Biosimilar GB241Rituximab Biosimilar GP2013Rituximab Biosimilar IBI301Rituximab Biosimilar JHL1101Rituximab Biosimilar PF-05280586Rituximab Biosimilar RTXM83Rituximab Biosimilar SAIT101Rituximab Biosimilar SIBP-02rituximab biosimilar TQB2303Rituximab PVVRRituximab-abbsRituximab-arrxRituximab-blitRituximab-pvvrRituximab-riteRituximab-rixaRituximab-rixiRixathonRiximyoRTXM 83RTXM-83RTXM83RuxienceTruxima
                                Biological:                                 Rituximab and Hyaluronidase HumanGiven SC
 Other names:
 
                                                                                                                    Rituxan HycelaRituximab Plus HyaluronidaseRituximab/HyaluronidaseRituximab/Hyaluronidase Human
                                Drug:                                 Vincristine SulfateGiven IV
 Other names:
 
                                                                                                                    KyocristineLeurocristine SulfateLeurocristine, sulfateOncovinVincasarVincosidVincrexVincristine, sulfate | 
                            
                    | Active Comparator Arm E (R-CHOP, radiation therapy)
 | Patients receive treatment as in Arm C. Within 6-8 weeks after completion of
chemotherapy, patients undergo radiation therapy over 25 fractions. Patients undergo ECHO
during screening and as clinically indicated and LP for CSF collection optionally during
screening. Patients also undergo CT or PET/CT throughout the trial. Additionally,
patients undergo bone marrow biopsy and aspiration optionally during screening and as
clinically indicated on study. Patients undergo blood sample collection on study. | 
                                                        
                                Procedure:                                 Biospecimen CollectionUndergo blood and CSF sample collection
 Other names:
 
                                                                                                                    Biological Sample CollectionBiospecimen CollectedSpecimen Collection
                                Procedure:                                 Bone Marrow AspirationUndergo bone marrow biopsy and aspiration
 
                                Procedure:                                 Bone Marrow BiopsyUndergo bone marrow biopsy and aspiration
 Other names:
 
                                                                                                                    Biopsy of Bone MarrowBiopsy, Bone Marrow
                                Procedure:                                 Computed TomographyUndergo CT or PET/CT
 Other names:
 
                                                                                                                    CATCAT ScanComputed Axial TomographyComputerized Axial TomographyComputerized axial tomography (procedure)Computerized TomographyComputerized Tomography (CT) scanCTCT ScanDiagnostic CAT ScanDiagnostic CAT Scan Service Typetomography
                                Drug:                                 CyclophosphamideGiven IV
 Other names:
 
                                                                                                                    (-)-Cyclophosphamide2H-1,3,2-Oxazaphosphorine, 2-[bis(2-chloroethyl)amino]tetrahydro-, 2-oxide, monohydrateAsta B 518B 518B-518B518CarloxanCiclofosfamidaCiclofosfamideCicloxalClafenClapheneCP monohydrateCTXCYCLO-cellCycloblastinCycloblastineCyclophosphamCyclophosphamid monohydrateCyclophosphamide MonohydrateCyclophosphamidumCyclophosphanCyclophosphaneCyclophosphanumCyclostinCyclostineCytophosphanCytophosphaneCytoxanFosfaseronGenoxalGenuxalLedoxinaMitoxanNeosarRevimmuneSyklofosfamidWR 138719WR- 138719WR-138719WR138719
                                Drug:                                 Doxorubicin HydrochlorideGiven IV
 Other names:
 
                                                                                                                    5,12-Naphthacenedione, 10-[(3-amino-2,3,6-trideoxy-alpha-L-lyxo-hexopyranosyl)oxy]-7,8, 9,10-tetrahydro-6,8,11-trihydroxy-8-(hydroxyacetyl)-1-methoxy-, hydrochloride, (8S-cis)- (9CI)ADMAdriacinAdriamycinAdriamycin HydrochlorideAdriamycin PFSAdriamycin RDFADRIAMYCIN, HYDROCHLORIDEAdriamycineAdriblastinaAdriblastineAdrimedacChloridrato de DoxorrubicinaDOXDOXO-CELLDoxolemDoxorubicin HClDoxorubicin.HClDoxorubinFarmiblastinaFI 106FI-106FI106hydroxydaunorubicinRubex
                                Procedure:                                 Echocardiography TestUndergo ECHO
 Other names:
                                Procedure:                                 Lumbar PunctureUndergo LP
 Other names:
                                Procedure:                                 Positron Emission TomographyUndergo PET/CT
 Other names:
 
                                                                                                                    Medical Imaging, Positron Emission TomographyPETPET ScanPositron emission tomography (procedure)Positron Emission Tomography ScanPositron-Emission TomographyPT
                                Drug:                                 PrednisoloneGiven PO
 Other names:
 
                                                                                                                    (11beta)-11,17,21-Trihydroxypregna-1,4-diene-3,20-dione.delta.1-HydrocortisoneAdnisoloneAprednislonCapsoidCortaloneCortisoloneDacortin HDecaprednilDecortin HDelta(1)HydrocortisoneDelta- CortefDelta-CortefDelta-DionaDelta-FDelta-PhoricolDelta1-dehydro-hydrocortisoneDeltacortrilDeltahydrocortisoneDeltasoloneDeltidrosolDhasoloneDi-Adreson-FDontisolon DEstilsonaFisopredFrisolonaGupisoneHostacortin HHydeltraHydeltrasolKlismacortKuhlprednonLenisoloneLepi-CortinoloLinola-H NLinola-H-Fett NLongiprednilMetacortandraloneMeti DermMeticorteloneOpredsonePanafcortelonePrecortisylPred-ClysmaPredeltilonePredni-CoelinPredni-HelvacortPrednicortelonePrednisolonumPrelonePreniloneSterane
                                Drug:                                 PrednisoneGiven PO
 Other names:
 
                                                                                                                    .delta.1-Cortisone1, 2-DehydrocortisoneAdasoneCortancylDacortinDeCortinDecortisylDecortonDelta 1-CortisoneDelta-DomeDeltacorteneDeltacortisoneDeltadehydrocortisoneDeltasoneDeltisonDeltraEconosoneLisacortMeprosona-FMetacortandracinMeticortenOfisolonaOrasonePanafcortPanasol-SParacortPerrigo PrednisonePREDPredicorPredicortenPrednicen-MPrednicortPrednidibPrednilongaPrednimentPrednisone IntensolPrednisonumPrednitonePromifenRayosServisoneSK-Prednisone
                                Radiation:                                 Radiation TherapyUndergo radiation therapy
 Other names:
 
                                                                                                                    Cancer RadiotherapyEnergy TypeENERGY_TYPEIrradiateIrradiatedIrradiationRadiationRadiation Therapy, NOSRadiotherapeuticsRadiotherapyRTTherapy, Radiation
                                Biological:                                 RituximabGiven IV
 Other names:
 
                                                                                                                    ABP 798ABP-798ABP798BI 695500BI-695500BI695500BlitzimaC2B8 Monoclonal AntibodyChimeric Anti-CD20 AntibodyCT P10CT-P10CTP10GP 2013GP-2013GP2013IDEC 102IDEC-102IDEC-C2B8IDEC-C2B8 Monoclonal AntibodyIDEC102IkgdarMabtasMabTheraMonoclonal Antibody IDEC-C2B8PF 05280586PF-05280586PF05280586RiabniRitemviaRituxanRituximab ABBSRituximab ARRXRituximab Biosimilar ABP 798Rituximab Biosimilar BI 695500Rituximab Biosimilar CT-P10Rituximab Biosimilar GB241Rituximab Biosimilar GP2013Rituximab Biosimilar IBI301Rituximab Biosimilar JHL1101Rituximab Biosimilar PF-05280586Rituximab Biosimilar RTXM83Rituximab Biosimilar SAIT101Rituximab Biosimilar SIBP-02rituximab biosimilar TQB2303Rituximab PVVRRituximab-abbsRituximab-arrxRituximab-blitRituximab-pvvrRituximab-riteRituximab-rixaRituximab-rixiRixathonRiximyoRTXM 83RTXM-83RTXM83RuxienceTruxima
                                Biological:                                 Rituximab and Hyaluronidase HumanGiven SC
 Other names:
 
                                                                                                                    Rituxan HycelaRituximab Plus HyaluronidaseRituximab/HyaluronidaseRituximab/Hyaluronidase Human
                                Drug:                                 Vincristine SulfateGiven IV
 Other names:
 
                                                                                                                    KyocristineLeurocristine SulfateLeurocristine, sulfateOncovinVincasarVincosidVincrexVincristine, sulfate | 
                            
                    | Experimental Arm F (R-CHOP, nivolumab, radiation therapy)
 | Patients receive treatment as in Arm D. Within 6-8 weeks after completion of
chemotherapy, patients undergo radiation therapy over 25 fractions. Patients undergo ECHO
during screening and as clinically indicated and LP for CSF collection optionally during
screening. Patients also undergo CT or PET/CT throughout the trial. Additionally,
patients undergo bone marrow biopsy and aspiration optionally during screening and as
clinically indicated on study. Patients undergo blood sample collection on study. | 
                                                        
                                Procedure:                                 Biospecimen CollectionUndergo blood and CSF sample collection
 Other names:
 
                                                                                                                    Biological Sample CollectionBiospecimen CollectedSpecimen Collection
                                Procedure:                                 Bone Marrow AspirationUndergo bone marrow biopsy and aspiration
 
                                Procedure:                                 Bone Marrow BiopsyUndergo bone marrow biopsy and aspiration
 Other names:
 
                                                                                                                    Biopsy of Bone MarrowBiopsy, Bone Marrow
                                Procedure:                                 Computed TomographyUndergo CT or PET/CT
 Other names:
 
                                                                                                                    CATCAT ScanComputed Axial TomographyComputerized Axial TomographyComputerized axial tomography (procedure)Computerized TomographyComputerized Tomography (CT) scanCTCT ScanDiagnostic CAT ScanDiagnostic CAT Scan Service Typetomography
                                Drug:                                 CyclophosphamideGiven IV
 Other names:
 
                                                                                                                    (-)-Cyclophosphamide2H-1,3,2-Oxazaphosphorine, 2-[bis(2-chloroethyl)amino]tetrahydro-, 2-oxide, monohydrateAsta B 518B 518B-518B518CarloxanCiclofosfamidaCiclofosfamideCicloxalClafenClapheneCP monohydrateCTXCYCLO-cellCycloblastinCycloblastineCyclophosphamCyclophosphamid monohydrateCyclophosphamide MonohydrateCyclophosphamidumCyclophosphanCyclophosphaneCyclophosphanumCyclostinCyclostineCytophosphanCytophosphaneCytoxanFosfaseronGenoxalGenuxalLedoxinaMitoxanNeosarRevimmuneSyklofosfamidWR 138719WR- 138719WR-138719WR138719
                                Drug:                                 Doxorubicin HydrochlorideGiven IV
 Other names:
 
                                                                                                                    5,12-Naphthacenedione, 10-[(3-amino-2,3,6-trideoxy-alpha-L-lyxo-hexopyranosyl)oxy]-7,8, 9,10-tetrahydro-6,8,11-trihydroxy-8-(hydroxyacetyl)-1-methoxy-, hydrochloride, (8S-cis)- (9CI)ADMAdriacinAdriamycinAdriamycin HydrochlorideAdriamycin PFSAdriamycin RDFADRIAMYCIN, HYDROCHLORIDEAdriamycineAdriblastinaAdriblastineAdrimedacChloridrato de DoxorrubicinaDOXDOXO-CELLDoxolemDoxorubicin HClDoxorubicin.HClDoxorubinFarmiblastinaFI 106FI-106FI106hydroxydaunorubicinRubex
                                Procedure:                                 Echocardiography TestUndergo ECHO
 Other names:
                                Procedure:                                 Lumbar PunctureUndergo LP
 Other names:
                                Biological:                                 NivolumabGiven IV
 Other names:
 
                                                                                                                    ABP 206BCD-263BMS 936558BMS-936558BMS936558CMAB819MDX 1106MDX-1106MDX1106NIVONivolumab Biosimilar ABP 206Nivolumab Biosimilar BCD-263Nivolumab Biosimilar CMAB819ONO 4538ONO-4538ONO4538Opdivo
                                Procedure:                                 Positron Emission TomographyUndergo PET/CT
 Other names:
 
                                                                                                                    Medical Imaging, Positron Emission TomographyPETPET ScanPositron emission tomography (procedure)Positron Emission Tomography ScanPositron-Emission TomographyPT
                                Drug:                                 PrednisoloneGiven PO
 Other names:
 
                                                                                                                    (11beta)-11,17,21-Trihydroxypregna-1,4-diene-3,20-dione.delta.1-HydrocortisoneAdnisoloneAprednislonCapsoidCortaloneCortisoloneDacortin HDecaprednilDecortin HDelta(1)HydrocortisoneDelta- CortefDelta-CortefDelta-DionaDelta-FDelta-PhoricolDelta1-dehydro-hydrocortisoneDeltacortrilDeltahydrocortisoneDeltasoloneDeltidrosolDhasoloneDi-Adreson-FDontisolon DEstilsonaFisopredFrisolonaGupisoneHostacortin HHydeltraHydeltrasolKlismacortKuhlprednonLenisoloneLepi-CortinoloLinola-H NLinola-H-Fett NLongiprednilMetacortandraloneMeti DermMeticorteloneOpredsonePanafcortelonePrecortisylPred-ClysmaPredeltilonePredni-CoelinPredni-HelvacortPrednicortelonePrednisolonumPrelonePreniloneSterane
                                Drug:                                 PrednisoneGiven PO
 Other names:
 
                                                                                                                    .delta.1-Cortisone1, 2-DehydrocortisoneAdasoneCortancylDacortinDeCortinDecortisylDecortonDelta 1-CortisoneDelta-DomeDeltacorteneDeltacortisoneDeltadehydrocortisoneDeltasoneDeltisonDeltraEconosoneLisacortMeprosona-FMetacortandracinMeticortenOfisolonaOrasonePanafcortPanasol-SParacortPerrigo PrednisonePREDPredicorPredicortenPrednicen-MPrednicortPrednidibPrednilongaPrednimentPrednisone IntensolPrednisonumPrednitonePromifenRayosServisoneSK-Prednisone
                                Radiation:                                 Radiation TherapyUndergo radiation therapy
 Other names:
 
                                                                                                                    Cancer RadiotherapyEnergy TypeENERGY_TYPEIrradiateIrradiatedIrradiationRadiationRadiation Therapy, NOSRadiotherapeuticsRadiotherapyRTTherapy, Radiation
                                Biological:                                 RituximabGiven IV
 Other names:
 
                                                                                                                    ABP 798ABP-798ABP798BI 695500BI-695500BI695500BlitzimaC2B8 Monoclonal AntibodyChimeric Anti-CD20 AntibodyCT P10CT-P10CTP10GP 2013GP-2013GP2013IDEC 102IDEC-102IDEC-C2B8IDEC-C2B8 Monoclonal AntibodyIDEC102IkgdarMabtasMabTheraMonoclonal Antibody IDEC-C2B8PF 05280586PF-05280586PF05280586RiabniRitemviaRituxanRituximab ABBSRituximab ARRXRituximab Biosimilar ABP 798Rituximab Biosimilar BI 695500Rituximab Biosimilar CT-P10Rituximab Biosimilar GB241Rituximab Biosimilar GP2013Rituximab Biosimilar IBI301Rituximab Biosimilar JHL1101Rituximab Biosimilar PF-05280586Rituximab Biosimilar RTXM83Rituximab Biosimilar SAIT101Rituximab Biosimilar SIBP-02rituximab biosimilar TQB2303Rituximab PVVRRituximab-abbsRituximab-arrxRituximab-blitRituximab-pvvrRituximab-riteRituximab-rixaRituximab-rixiRixathonRiximyoRTXM 83RTXM-83RTXM83RuxienceTruxima
                                Biological:                                 Rituximab and Hyaluronidase HumanGiven SC
 Other names:
 
                                                                                                                    Rituxan HycelaRituximab Plus HyaluronidaseRituximab/HyaluronidaseRituximab/Hyaluronidase Human |