A Study of Isatuximab-based Therapy in Participants With Lymphoma

Lymphoma Clinical Trial

Official title:

A Phase 1/2 Open-label, Multi-center, Safety, Preliminary Efficacy and Pharmacokinetic (PK) Study of Isatuximab in Combination With Other Anti-cancer Therapies in Participants With Lymphoma

Clinical Trial Details — Status: Terminated

Administrative data

• NCT number: NCT03769181
• Other study ID #: ACT15320
• Secondary ID: 2018-002442-37U1
• Status: Terminated
• Phase: Phase 1/Phase 2
• Start date: December 11, 2018
• Est. completion date: November 8, 2022

Study information

• Verified date: September 2023
• Source: Sanofi
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Primary Objectives: Phase 1 -To characterize the safety and tolerability of isatuximab in combination with cemiplimab in participants with relapsed and refractory classic Hodgkin's lymphoma (cHL), diffuse large B-cell lymphoma (DLBCL) or peripheral T-cell lymphoma (PTCL), and to confirm the recommended Phase 2 dose (RP2D). Phase 2 - Cohort A1 (anti-programmed cell death protein 1/ligand 1 [PD-1/PD-L1] naïve cHL): To assess the complete remission (CR) rate of isatuximab in combination with cemiplimab. - Cohort A2 (cHL progressing from PD-1/PD-L1), B (DLBCL) and C (PTCL): To assess the objective response rate (ORR) of isatuximab in combination with cemiplimab. Secondary Objectives: - To evaluate the safety of the RP2D of the combination of isatuximab with cemiplimab. - To evaluate the safety of the combination of isatuximab with cemiplimab and radiotherapy in participants with cHL. - To evaluate the immunogenicity of isatuximab and cemiplimab when given in combination. - To characterize the pharmacokinetic (PK) profile of isatuximab and cemiplimab when given in combination. - To assess overall efficacy of isatuximab in combination with cemiplimab and isatuximab in combination with cemiplimab and radiotherapy.

Description:

The total study duration per participant was up to 28 months, including an up to 28-day screening period, an up to 96-week treatment period, and a 90-day safety follow up period.

Recruitment information / eligibility

• Status: Terminated
• Enrollment: 58
• Est. completion date: November 8, 2022
• Est. primary completion date: November 8, 2022
• Accepts healthy volunteers: No
• Gender: All
• Age group: 12 Years and older

Eligibility

Inclusion criteria:

• Participants greater than or equal to (>=) 12 years of age inclusive, at the time of signing the informed consent.
• Disease location amenable to tumor biopsy at Baseline.
• Measurable disease.
• For Cohort A1 (cHL anti-programmed cell death protein 1/ligand 1 [PD-1/PD-L1] inhibitor naïve): Histologically confirmed advanced cHL that had relapsed or progressed after at least 3 lines of systemic therapy that included autologous hematopoietic stem cell transplant (auto-HSCT) or auto-HSCT and brentuximab vedotin (BV).
• For Cohort A2 (cHL anti-PD-1/PD-L1 inhibitor progressor): Histologically confirmed advanced cHL which had relapsed or progressed after one previous anti-PD-1/PD-L1 containing regimen as the most recent prior therapy but no more than 4 lines of previous chemotherapy including the anti-PD-1/PD-L1 containing regimen and documentation of benefit during or after the anti-PD-1/PD-L1 containing regimen within 4 months prior to initiation of investigational medicinal product.
• For Cohort B (diffuse large B-cell lymphoma [DLBCL]): Histologically confirmed advanced DLBCL that had relapsed or progressed after 2 lines of systemic therapy including auto-HSCT or 2 lines of systemic therapy for participants who were not eligible for auto-HSCT.
• For Cohort C (peripheral T-cell lymphoma [PTCL]): Histologically confirmed advanced PTCL that had relapsed or progressed after either first-line chemotherapy and auto-HSCT as consolidation of first remission or first-line chemotherapy if participants were ineligible for auto-HSCT.
• Body weight of greater than (>) 45 kilograms for participants with age less than (<)18 years.

Exclusion criteria:

• Prior exposure to agent that blocks CD38.
• For participants with cHL (PD-1/PD-L1 naïve), DLBCL or PTCL prior exposure to any agent (approved or investigational) that blocks the PD-1/PD-L1, PD-L2, CD137, cytotic T-lymphocyte-associated protein 4 or LAG-3.
• Evidence of other immune related disease/conditions.
• Had received a live-virus vaccination within 28 days of planned treatment start; seasonal flu vaccines that do not contain live virus are permitted.
• Eastern Cooperative Oncology Group (ECOG) performance status (PS) >=2.
• Poor bone marrow reserve.
• Poor organ function. The above information was not intended to contain all considerations relevant to a participant's potential participation in a clinical trial.

Related Conditions & MeSH terms

• Lymphoma

Intervention

Drug:
• isatuximab SAR650984
Pharmaceutical form: solution for infusion Route of administration: intravenous
• cemiplimab REGN2810
Pharmaceutical form: solution for infusion Route of administration: intravenous

Locations

Country	Name	City	State
France	Investigational Site Number :2500005	Dijon
France	Investigational Site Number :2500004	Montpellier
France	Investigational Site Number :2500002	Nantes
France	Investigational Site Number :2500007	Pessac
France	Investigational Site Number :2500001	Villejuif
Italy	Investigational Site Number :3800002	Bologna
Italy	Investigational Site Number :3800006	Brescia
Italy	Investigational Site Number :3800003	Rozzano	Milano
Korea, Republic of	Investigational Site Number :4100001	Gangnam-gu	Seoul-teukbyeolsi
Korea, Republic of	Investigational Site Number :4100002	Seoul	Seoul-teukbyeolsi
Netherlands	Investigational Site Number :5280002	Amsterdam
Netherlands	Investigational Site Number :5280001	Maastricht
Portugal	Investigational Site Number :6200002	Coimbra
Portugal	Investigational Site Number :6200004	Lisboa
Portugal	Investigational Site Number :6200003	Porto
Spain	Investigational Site Number :7240003	Barcelona	Barcelona [Barcelona]
Spain	Investigational Site Number :7240005	Barcelona	Barcelona [Barcelona]
Spain	Investigational Site Number :7240002	Hospitalet de Llobregat	Barcelona [Barcelona]
Spain	Investigational Site Number :7240004	Madrid / Madrid	Madrid, Comunidad De
Taiwan	Investigational Site Number :1580002	Taichung

Sponsors (1)

Lead Sponsor	Collaborator
Sanofi

Countries where clinical trial is conducted

France,  Italy,  Korea, Republic of,  Netherlands,  Portugal,  Spain,  Taiwan, 

References & Publications (1)

Carlo-Stella C, Zinzani PL, Sureda A, Araujo L, Casasnovas O, Carpio C, Yeh SP, Bouabdallah K, Cartron G, Kim WS, Cordoba R, Koh Y, Re A, Alves D, Chamuleau M, Le Gouill S, Lopez-Guillermo A, Moreira I, van der Poel MWM, Abbadessa G, Meng R, Ji R, Lepine L, Saleem R, Ribrag V. A phase 1/2, open-label, multicenter study of isatuximab in combination with cemiplimab in patients with lymphoma. Hematol Oncol. 2023 Feb;41(1):108-119. doi: 10.1002/hon.3089. Epub 2022 Oct 31. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Number of Participants With Dose Limiting Toxicities (DLTs)	DLTs: Adverse Events (AEs) occurring during 1st treatment cycle, unless due to disease progression or obviously unrelated cause which included: hematological abnormalities: Grade(G) 4 neutropenia(N) for 7 or more consecutive days, G3 to G4 N with fever (temperature greater than or equal to [>=] 38.5 degree Celsius on more than 1 occasion) or microbiologically/radiographically documented infection, G3 to G4 thrombocytopenia with clinically significant bleeding requiring clinical intervention or non-hematological abnormalities: G 4 non-hematologic AE, G>=2 uveitis, G3 non-hematological AE lasting greater than (>)3 days, delay in initiation of Cycle 2 >14 days due to treatment related laboratory abnormalities/AE. Any other AE that the study committee deemed to be dose-limiting, regardless of grade, was also considered as DLT.	Cycle 1 (28 days)
Primary	Number of Participants With Treatment-Emergent Adverse Events (TEAEs), and Treatment-Emergent Serious Adverse Events (TESAEs)	An AE was defined as any untoward medical occurrence in a participant who received study drug and did not necessarily have to have a causal relationship with the treatment. Serious adverse events (SAEs) were any untoward medical occurrence that at any dose: resulted in death, was life-threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, was a congenital anomaly/birth defect, was a medically important event. TEAEs were defined as AEs that developed, worsened or became serious during the TEAE period (defined as the time from the first dose of study treatment up to 30 days after the last dose of study treatment).	From first dose of study treatment up to 30 days after last dose of study treatment (maximum duration: up to 103 weeks)
Primary	Number of Participants With Laboratory Abnormalities: Hematological Parameters	Hematological parameters assessed were anemia, white blood cell (WBC) decreased, platelet count decreased, lymphocyte count decreased, and neutrophil count decreased. Abnormality criteria was assessed as per the National Cancer Institute Common Terminology Criteria for Adverse Events version 5.0 NCI-CTCAE v 5.0), where Grade 1 = Mild; Grade 2 = Moderate; Grade 3 = Severe; Grade 4 = Potentially Life Threatening. Grade refers to the severity of the AEs.	From first dose of study treatment up to 30 days after last dose of study treatment (maximum duration: up to 103 weeks)
Primary	Number of Participants With Laboratory Abnormalities: Electrolytes	Electrolyte parameters assessed were hyponatremia, hypokalemia, hyperkalemia, hypocalcemia, hypercalcemia, hypoalbuminemia, hypoglycemia and hyperglycemia. Abnormal criteria was assessed as per the NCI-CTCAE v 5.0, where Grade 1 = Mild; Grade 2 = Moderate; Grade 3 = Severe; Grade 4 = Potentially Life Threatening. Grade refers to the severity of the AEs.	From first dose of study treatment up to 30 days after last dose of study treatment (maximum duration: up to 103 weeks)
Primary	Number of Participants With Laboratory Abnormalities: Renal Parameters	Abnormal renal parameters assessed were glomerular filtration rate (GFR) by class, creatinine increased and hyperuricemia. GFR by class was assessed in categories:>=90 milliliter per minute per 1.73 meter square (mL/min/1.73m^2) (Normal), >=60 to <90 mL/min/1.73m^2 (Mild), >=30 to <60 mL/min/1.73m^2 (Moderate), >=15 to <30 mL/min/1.73m^2 (Severe), and <15 mL/min/1.73m^2 (End Stage Renal Disease). Abnormal criteria was assessed as per NCI-CTCAE v 5.0, where Grade 1 = Mild; Grade 2 = Moderate; Grade 3 = Severe; Grade 4 = Potentially Life Threatening. Grade refers to the severity of the AEs.	From first dose of study treatment up to 30 days after last dose of study treatment (maximum duration: up to 103 weeks)
Primary	Number of Participants With Laboratory Abnormalities: Liver Function Parameters	Abnormal liver function parameters assessed were aspartate aminotransferase (AST) increased, alanine aminotransferase (ALT) increased, alkaline phosphatase (ALP) increased, blood bilirubin (BB) increased. Abnormal criteria was assessed as per NCI-CTCAE v 5.0, where Grade 1 = Mild; Grade 2 = Moderate; Grade 3 = Severe; Grade 4 = Potentially Life Threatening. Grade refers to the severity of the AEs.	From first dose of study treatment up to 30 days after last dose of study treatment (maximum duration: up to 103 weeks)
Primary	Cohort A1: Percentage of Participants With Complete Response (CR)	Percentage of participants who had a CR as a best overall response (BOR) using the Lugano response criteria (LRC) 2014 (based on PET-CT and CT responses). Per LRC, CR based on PET-CT response was defined as complete metabolic response (MR) in lymph nodes and extralymphatic sites with a score of 1, 2, or 3 with or without residual mass, on 5-point scale (5PS), where, 1= no uptake above background; 2 = uptake <=mediastinum; 3 = uptake > mediastinum but <= liver; 4 = uptake moderately > liver; 5 = uptake markedly higher than liver and/or new lesions; no new lesions and no evidence of fluorodeoxyglucose (FDG)-avid disease in bone marrow. CR based on CT-response was defined as target nodes/nodal masses of lymph nodes, extralymphatic sites regressed to <=1.5 cm in longest dimension transverse diameter of lesion (LDi); absence of non-measured lesion; organ enlargement regressed to normal; no new lesions; normal bone marrow morphology; if indeterminate, immunohistochemistry negative.	From the date of randomization until disease progression or death or study cut-off date, whichever comes first (maximum duration: up to 103 weeks)
Primary	Cohort A2, B and C: Percentage of Participants With Objective Response (OR)	Percentage of participants who had a CR or partial response (PR) as BOR using LRC, 2014. Per LRC, CR (PET-CT): complete MR in lymph nodes and extralymphatic sites with a score of 1, 2, or 3 with or without residual mass; no new lesions and no evidence of FDG-avid disease. CR (CT-response): target nodes/nodal masses of lymph nodes, extralymphatic sites regressed to <=1.5cm LDi; absence of non-measured lesion; organ enlargement regressed to normal; no new lesions; normal bone marrow morphology. PR (PET-CT): partial MR in lymph nodes and extralymphatic sites; no new lesions and residual uptake higher than uptake. PR (Per CT): lymph nodes, extralymphatic sites>=50% decrease in sum of product of perpendicular diameters (SPD), extranodal sites; if lesion is too small to measure on CT,assign5mm*5mm as default; if no longer visible:0*0mm; Node>5mm*5mm but smaller than normal, use actual measurement; absent/regressed non-measured lesions; no increase; spleen regressed by>50% or no new lesions.	From the date of randomization until disease progression, or death or study cut-off date, whichever comes first (maximum duration: up to 103 weeks)
Secondary	Number of Participants With Treatment-Induced and Treatment Boosted Antidrug Antibodies (ADA) Against Isatuximab	ADA responses were categorized as treatment boosted ADA and treatment-induced ADA. Treatment boosted ADA was defined as pre-existing ADAs with a significant increase in the ADA titer during the study compared to the Baseline titer. Treatment-induced ADA was defined as ADA that developed at any time during the ADA on-study observation period in participants without pre-existing ADA.	From first dose of study treatment up to 30 days after last dose of study treatment (maximum duration: up to 103 weeks)
Secondary	Number of Participants With Treatment-Induced and Treatment Boosted Antidrug Antibodies (ADA) Against Cemiplimab	ADA responses were categorized as treatment boosted ADA and treatment-induced ADA. Treatment boosted ADA was defined as pre-existing ADAs with a significant increase in the ADA titer during the study compared to the Baseline titer. Treatment-induced ADA was defined as ADA that developed at any time during the ADA on-study observation period in participants without pre-existing ADA.	From first dose of study treatment up to 30 days after last dose of study treatment (maximum duration: up to 103 weeks)
Secondary	Pharmacokinetics (PK) Parameter: Plasma Concentration of Isatuximab at End of Infusion (CEOI)	Ceoi is the plasma concentration observed at the end of intravenous infusion of isatuximab.	End of infusion (EOI up to 3 hours) on Day 2 of Cycle 1
Secondary	PK Parameter: Maximum Observed Plasma Concentration (Cmax) After the First Infusion of Isatuximab	Cmax was defined as the maximum plasma concentration observed after the first administration of drug.	At Start of infusion (SOI; 0 hour), before actual EOI (up to 3 hours), EOI+ 4 hours, 72 hours and 144 hours post-dose on Day 2 of Cycle 1
Secondary	PK Parameter: Time to Reach Cmax (Tmax) After the First Infusion of Isatuximab	Tmax was defined as the time to reach Cmax, after the intravenous infusion of isatuximab.	At SOI (0 hour), before actual EOI (up to 3 hours), EOI+ 4 hours, 72 hours and 144 hours post-dose on Day 2 of Cycle 1
Secondary	PK Parameter: Area Under the Plasma Concentration (AUClast) Versus Time Curve After the First Infusion of Isatuximab	AUClast was defined as area under the plasma concentration versus time curve calculated from time 0 to last quantifiable concentration, calculated for isatuximab.	At SOI (0 hour), before actual EOI (up to 3 hours), EOI+ 4 hours, 72 hours and 144 hours post-dose on Day 2 of Cycle 1
Secondary	PK Parameter: Last Concentration Observed Above the Lower Limit of Quantification (Clast) After the First Infusion of Isatuximab	Clast was defined as the last concentration of isatuximab observed above the lower limit of quantification.	At SOI (0 hour), before actual EOI (up to 3 hours), EOI+ 4 hours, 72 hours and 144 hours post-dose on Day 2 of Cycle 1
Secondary	PK Parameter: Time of Clast (Tlast) After the First Infusion of Isatuximab	Tlast was defined as the time of last concentration observed above the lower limit of quantification for isatuximab.	At SOI (0 hour), before actual EOI (up to 3 hours), EOI+ 4 hours, 72 hours and 144 hours post-dose on Day 2 of Cycle 1
Secondary	PK Parameter: Area Under the Concentration Versus Time Curve Over the Dosing Interval (AUC0-168 Hours) After the First Infusion of Isatuximab	AUC0-168 hours was defined as the area under the plasma concentration versus time curve from time 0 to 168 hours post dose calculated for isatuximab. Samples for this outcome measure were collected up to 144 hours post-dose. No sample was collected at 168 hours post-dose; and thus, the samples collected up to 144 hours post-dose were extrapolated to derive data for 168 hours post-dose.	At SOI (0 hour), before actual EOI (up to 3 hours), EOI+ 4 hours, 72 hours and 144 hours post-dose on Day 2 of Cycle 1
Secondary	PK Parameter: Area Under the Concentration Versus Time Curve Over the Dosing Interval (AUC0-144 Hours) After the First Infusion of Isatuximab	AUC0-144 hours was defined as the area under the plasma concentration versus time curve from time 0 to 144 hours post dose calculated for isatuximab.	At SOI (0 hour), before actual EOI (up to 3 hours), EOI+ 4 hours, 72 hours and 144 hours post-dose on Day 2 of Cycle 1
Secondary	PK Parameter: Plasma Trough Concentration (Ctrough) of Isatuximab	Ctrough was the plasma concentration of isatuximab observed just before treatment administration during repeated dosing.	Pre-infusion on Cycle1:Day 2, 8, 15, & 22, Cycle 2:Day 1 &15, Cycle 3:Day 1 &15, Cycle 4:Day 1 &15, Cycle 5 Day1,Cycle 6 Day1,Cycle 7 Day 1, Cycle 8 Day1, Cycle 9 Day1, Cycle 10 Day1, Cycle 11 Day1, Cycle14 Day1, Cycle 17 Day1, Cycle 20 Day1,Cycle 23 Day1
Secondary	PK Parameter: Serum Concentration of Cemiplimab at End of Infusion (CEOI)	Ceoi is the plasma concentration observed at the end of intravenous infusion of cemiplimab.	EOI (up to 30 minutes [min]) on Day 1 of Cycle 1
Secondary	PK Parameter: Maximum Observed Concentration (Cmax) After the First Infusion of Cemiplimab	Cmax was defined as the maximum concentration observed after the first administration.	At SOI (0 hour), before actual EOI (up to 30 min), EOI+4 hours, 96 hours, 168 hours, and 336 hours post-dose on Day 1 of Cycle 1
Secondary	PK Parameter: Time to Reach Cmax (Tmax) After the First Infusion of Cemiplimab	Tmax was defined as the time to reach Cmax after the intravenous infusion of cemiplimab.	At SOI (0 hour), before actual EOI (up to 30 min), EOI+4 hours, 96 hours, 168 hours, and 336 hours post-dose on Day 1 of Cycle 1
Secondary	PK Parameter: Area Under the Serum Concentration (AUClast) Versus Time Curve After the First Infusion of Cemiplimab	AUClast was defined as area under the serum concentration versus time curve calculated from time 0 to last quantifiable concentration calculated for cemiplimab.	At SOI (0 hour), before actual EOI (up to 30 min), EOI+4 hours, 96 hours, 168 hours, and 336 hours post-dose on Day 1 of Cycle 1
Secondary	PK Parameter: Last Concentration Observed Above the Lower Limit of Quantification (Clast) After the First Infusion of Cemiplimab	Clast was defined as the last concentration of cemiplimab observed above the lower limit of quantification.	At SOI (0 hour), before actual EOI (up to 30 min), EOI+4 hours, 96 hours, 168 hours, and 336 hours post-dose on Day 1 of Cycle 1
Secondary	PK Parameter: Time of Clast (Tlast) After the First Infusion of Cemiplimab	Tlast was defined as the time of last concentration observed above the lower limit of quantification for cemiplimab.	At SOI (0 hour), before actual EOI (up to 30 min), EOI+4 hours, 96 hours, 168 hours, and 336 hours post-dose on Day 1 of Cycle 1
Secondary	PK Parameter: Area Under the Serum Concentration Versus Time Curve Over the Dosing Interval (AUC0-336 Hours) After the First Infusion of Cemiplimab	AUC0-336 hours was defined as the area under the serum concentration versus time curve from time 0 to 336 hours post dose for cemiplimab.	At SOI (0 hour), before actual EOI (up to 30 min), EOI+4 hours, 96 hours, 168 hours, and 336 hours post-dose on Day 1 of Cycle 1
Secondary	PK Parameter: Serum Trough Concentration (Ctrough) of Cemiplimab	Ctrough was the serum concentration of cemiplimab observed just before treatment administration during repeated dosing.	Pre-infusion on Cycle 1:Day 1 & Day15,Cycle 2:Day 1 & Day 15,Cycle 3:Day 1 & Day 15,Cycle 4:Day 1 & Day15,Cycle 5 Day 1,Cycle 6 Day 1,Cycle7 Day1,Cycle 8 Day 1,Cycle 9 Day1,Cycle 10 Day1,Cycle11 Day1,Cycle14 Day 1,Cycle 17 Day1,Cycle20 Day 1,Cycle 23 Day1
Secondary	Percent Change From Baseline in Tumor Burden	Tumor burden change was defined as the best percent-change from baseline in a sum of product of lesion diameters (longest for non-nodal lesion, short axis for nodal lesions) for all target lesions.	Up to 103 weeks
Secondary	Duration of Response (DOR)	Time (months) between date of first response to first date that recurrent or radiologically disease progression (PD) was documented, or date of death,whichever was 1st. In absence of PD or death before cut-off date or date of initiation of further anticancer treatment, DOR was censored at date of last valid response not showing PD performed prior to initiation of further anticancer treatment or cut-off date, whichever was earlier. PD(PET-CT): metabolic disease with score 4/5 with inc. in intensity of uptake for target nodes/nodal mass & new FDG-avid foci consistent with lymphoma. PD(CT):any 1 of following: cross product of longest transverse diameter of lesion(LDi) & perpendicular diameter (PPD) progression of nodes/nodal mass, abnormal node/lesion with LDi >1.5 cm, inc >=50% from PPD nadir & inc in LDi/ shortest axis perpendicular to LDi(SDi) from nadir 0.5 cm, regrowth of resolved lesions, new splenomegaly,progression of non-measured lesion, new/recurrent involvement of bone marrow.	From the date of first response until disease progression or death, or study cut-off date whichever occurred first (maximum duration: up to 103 weeks)
Secondary	Percentage of Participants With Disease Control (DC)	DC defined as percentage of participants who achieved CR, PR or stable disease (SD) as per LRC, 2014. CR (PET-CT): complete MR in lymph nodes and extralymphatic sites; no new lesions and no evidence of FDG-avid disease. CR (CT): target nodes/nodal masses of lymph nodes, extralymphatic sites regressed to <=1.5cm LDi; absence of non-measured lesion; organ enlargement regressed to normal; no new lesions; normal bone marrow. PR (PET-CT): partial MR in lymph nodes and sites; no new lesions. PR (CT): lymph nodes, sites>=50% decrease in SPD, sites; if lesion is too small to measure on CT, assign 5mm*5mm; No longer visible:0*0mm; Node>5mm*5mm, use actual measurement; absent/regressed non-measured lesions; no increase; spleen regressed by>50% or no new lesions. SD (PET-CT):no metabolic response, target nodes score of 4/5 with no significant change & no new lesions; SD (CT): <50% dec in SPD, no increase in progression for. 5PS:1: non-measured lesions, organ enlargement & no new lesions.	From the date of first response until disease progression or death, or study cut-off date whichever occurred first (maximum duration: up to 103 weeks)
Secondary	Progression Free Survival (PFS)	PFS: time (in months) from 1st study treatment administration to date of 1st documented radiographic progression or date of death from any cause, whichever occurs 1st. Per LRC, 2014 PD (per PET-CT): metabolic disease with score 4/5 with increase (inc) in intensity of uptake for individual target nodes/nodal mass & new FDG-avid foci consistent with lymphoma at interim/ end-of-treatment assessment for extra nodal lesions, new FDG-avid foci consistent with lymphoma rather; new/recurrent FDG-avid foci bone marrow. PD (per CT response): any 1 of following: cross product of longest transverse diameter of lesion (LDi) & perpendicular diameter (PPD) progression of nodes/nodal mass, abnormal node/lesion with LDi >1.5 cm, inc >=50% from PPD nadir & inc in LDi/ shortest axis perpendicular to LDi from nadir 0.5 cm for lesion <= 2 cm, regrowth of resolved lesions, new splenomegaly,progression of preexisting non measured lesion, new/recurrent involvement of bone marrow.	From the date of randomization until disease progression, or death or study cut-off date, whichever comes first (maximum duration: up to 103 weeks)
Secondary	Cohort A1 and A2: Percentage of Participants With Objective Response	Percentage of participants who had a CR or PR as BOR using LRC, 2014 (based on PET-CT and CT responses). CR (per PET-CT): complete MR in lymph nodes and extra lymphatic sites with a score of 1, 2, or 3 with or without residual mass; no new lesions and no evidence of FDG-avid disease. CR (CT-response): target nodes/nodal masses of lymph nodes, extralymphatic sites regressed to <=1.5cm LDi; absence of non-measured lesion; organ enlargement regressed to normal; no new lesions; normal bone marrow morphology. PR (per PET-CT): partial MR in lymph nodes and extral ymphatic sites; no new lesions and residual uptake higher than uptake. PR (per CT): lymph nodes, extralymphatic sites >=50% decrease in SPD, extranodal sites; if lesion is too small to measure on CT, assign 5mm*5mm as default; if no longer visible:0*0mm; Node>5mm*5mm but smaller than normal, used actual measurement; absent/regressed non-measured lesions; no increase; spleen regressed by>50% or no new lesions.	From the date of randomization until disease progression, or death or study cut-off date, whichever comes first (maximum duration: up to 103 weeks)
Secondary	Cohort A1 and A2: Percentage of Participants With Complete Response	Percentage of participants who had a CR as a BOR using the LRC, 2014 (based on PET-CT and CT responses). Per LRC, CR based on PET-CT was defined as complete MR in lymph nodes and extralymphatic sites with a score of 1, 2, or 3 with or without residual mass, on 5PS, where, 1= no uptake above background; 2 = uptake <=mediastinum; 3 = uptake > mediastinum but <= liver; 4 = uptake moderately > liver; 5 = uptake markedly higher than liver and/or new lesions; no new lesions and no evidence of FDG-avid disease in bone marrow. CR based on CT-response was defined as target nodes/nodal masses of lymph nodes, extralymphatic sites regressed to <=1.5 cm in longest dimension transverse diameter of lesion (LDi); absence of non-measured lesion; organ enlargement regressed to normal; no new lesions; normal bone marrow morphology; if indeterminate, immunohistochemistry negative.	From the date of randomization until disease progression, or death or study cut-off date, whichever comes first (maximum duration: up to 103 weeks)