626. Aggressive Lymphoma (Diffuse Large B-Cell and Other Aggressive B-Cell Non-Hodgkin Lymphomas)—Results from Prospective Clinical Trials: Novel Therapies in Relapsed/Refractory Disease

Conclusion cited from the abstract: 

Lonca has demonstrated encouraging single-agent anti-tumor activity and manageable toxicity in pts with R/R DLBCL. Futility requirements were met and pts are now enrolling in stage 2 of the trial. Updated efficacy results will be presented at the meeting.

*Laboratory abnormality data are reported for platelet count decreased and neutrophil count decreased to avoid under-reporting of these events.

Study sponsored by ADC Therapeutics SA. http://clinicaltrials.gov/show/NCT03589469

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758

Conclusion cited from the abstract: 

Subcutaneously administered GEN3013, a potent CD3×CD20 bsAb, shows good tolerability and early evidence of clinical activity at low dose levels in heavily pretreated pts with relapsed or refractory B-NHL. All CRS events were non-severe and did not lead to discontinuation. No DLTs were observed. Dose escalation is ongoing; updated data will be presented. Dose expansion will begin upon determining the recommended Phase 2 dose (RP2D) (NCT03625037).

 

759

Conclusion cited from the abstract: Pembrolizumab and vorinostat was tolerable and produced objective responses in pts with RR DLBCL, FL, and HL. A majority of DLBCL pts and all HL pts responded, including pts who had progressed on prior anti-PD1 tx.

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Conclusion cited from the abstract: The combination of blinatumomab and lenalidomide, given at the RP2D dose of 20 mg daily, is safe and well tolerated. This regimen demonstrates encouraging efficacy in this heavily pretreated patient population and is a promising alternative treatment option for R/R NHL patients who are not candidates for aggressive cytotoxic chemotherapy or as a bridge to allogeneic SCT.

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761

Conclusion cited from the abstract: The iR2 combination of ibrutinib, lenalidomide, and rituximab showed an ORR of 47% in patients with follow-up response assessment, with 28% CRs, including durable CRs of up to 22 mos. The safety profile was manageable in this phase 2 study of patients with R/R non-GCB DLBCL ineligible for SCT. Further evaluation of the iR2 regimen is ongoing.

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762

Conclusion cited from the abstract: 

Tolerability of REGN1979 has been demonstrated at doses up to the final dose level of 320 mg weekly, with no observed DLTs in pts with B-NHL. No pts discontinued due to neurologic AE. Activity was observed broadly in heavily pretreated R/R B-NHL pts treated with REGN1979. With increasing dose, more resistant tumors such as R/R DLBCL are showing benefit, even in pts with prior CAR T therapy failure. Based on these efficacy findings, a global Ph 2 study is underway to evaluate REGN1979 monotherapy in R/R FL Gr 1-3a, R/R DLBCL, and other R/R B-NHL subtypes.

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