Table 2 clinical characteristics and outcomes of select BsAbs in diffuse large B cell lymphoma (DLBCL).

From: Bispecific antibodies and CAR-T cells: dueling immunotherapies for large B-cell lymphomas

BsAb

Target

Schedule and logistics

Population

Results

Grade ≥3 AEs

FDA indication

Epcoritamab

CD20xCD3

SC, weekly (C1-C3), every 2W (C4–C9), every 4WC ≥ 10.

Given till progression

Steroid Ppx

≥2 PLT including ASCT and CAR-T

ORR 63.1% (99/157)

CR 38.9% (61/157)

DOR 12 m

Any 61.1%, AEs leading to termination 7%, CRS 2.5%, ICANS 0.6%, TLS 1.3%

Accelerated approval

≥2 PLT in r/rDLBCL, NOS, T-iNHL and HGBCL.

Mosunetuzumab

CD20xCD3

IV, C1D1: 1 mg; C1D8 2 mg; C1D15 and C2D1: 60 mg; C3 + D1: 30 mg. (fixed duration up to C8 for pts in CR and C17 for pts in PR/SD)

≥2 PLT including ASCT and CAR-T

Types: DLBCL, T-FL

ORR 42.0% (37/88)

CR 23.9% (21/88)

DOR 7 m

PFS 3.2 m

OS 11.5 m

Any 58%, AEs leading to termination 4.5%, CRS 2.3%, ICANS 0%, grade 5 TRAEs 1.1%

Not yet approved for DLBCL

Glofitamab

CD20xCD3

IV, weekly step up dosing starting on d8 (2.5 mg), d15 (10 mg) of C1, followed by a dose of 30 mg on d1 of C2–12 (fixed duration)

Obinutuzumab pretreatment 7d before therapy

≥2 PLT including ASCT and CAR-T

Types: DLBCL, HGBCL, PMBCL, T-FL

ORR 51.1% (80/155)

CR 39% (60/155)

DOR 18.4 m

PFS 4.9 m, OS 11.5 m

Any 56%, AEs leading to termination 9%, CRS 3.9%, ICANS 3%, TLS 1%, FN 3%

Accelerated approval

≥2 PLT in r/r DLBCL, NOS or T-FL LBCL

Odronextamab

CD20xCD3

IV, weekly (C1–C4) then every 2 weeks

Steroid Ppx

≥2 PLT, including prior CAR-T

ORR 52% (66/127)

CR 31% (39/127)

Duration of CR 17.9 m

Any 78.6%, AEs leading to termination 10%, CRS 1%, ICANS 0%,

Not yet approved for DLBCL

Palmotamaba

CD20xCD3

IV, ≥2 cycles if PR achievd

Median number of prior lines:4, 50% CAR-T exposed

OR 47.4% (9/19 pts)

CR 26.3% (5/19 pts)

Any 77.8%, AEs leading to termination 13.9%CRS 0%

Not yet approved for DLBCL

  1. AEs adverse events, CR complete response, DOR duration of response, FN febrile neutropenia, IV intravenous, M months, ORR overall response rate, PMBCL primary mediastinal B cell lymphoma, Ppx prophylaxis, PR partial response, r/r relapse/ refractory, SD stable disease, SC subcutaneous, FL transformed follicular lymphoma, T-iNHL transformed indolent non-Hodgkin lymphoma, TRAEs treatment related adverse events, W weeks.
  2. aPhase 1 dose escalation data.