- 53.8% ORR in relapsed/refractory DLBCL patients
- Preliminary duration of response of up to 168 days observed, with six of seven ongoing responses as of cut-off date
LAG-3 has been shown to be highly expressed in DLBCL and has emerged as a therapeutic target of interest in this population, while PD-1-targeted therapy has yielded modest efficacy. There remains significant unmet need for patients with relapsed/refractory (R/R) DLBCL.
In one of the tebotelimab monotherapy dose expansion cohorts, 20 DLBCL patients were enrolled, half of whom were CAR T cell therapy experienced. As of the
A preliminary objective response rate (ORR) of 53.8% (7 of 13 patients) was observed, including responses in five of seven CAR T cell-naïve patients and in two of six CAR T cell experienced patients, the latter of whom both had complete responses. A preliminary duration of response of up to 168 days was observed, with six of seven ongoing responses as of the cut-off date. In the study, baseline LAG-3 expression appeared to associate with clinical response, with additional analyses ongoing.
Tebotelimab was generally well-tolerated among heavily pre-treated R/R DLBCL patients, with manageable infusion-related reactions and no evidence of tumor lysis syndrome. The most common TRAE was pyrexia, which occurred in three (15%) patients. A single Grade 3 TRAE of anemia was observed.
“Although early, the preliminary ORR observed in relapsed/refractory DLBCL patients treated with tebotelimab is promising,“ said
About Diffuse Large B-Cell Lymphoma
DLBCL is the most common histologic subtype of non-Hodgkin lymphoma (NHL) accounting for approximately 25 percent of NHL cases globally. According to published research, the incidence in the
Tebotelimab (previously known as MGD013) is an investigational, first-in-class bispecific, tetravalent DART molecule targeting PD-1 and LAG-3. Tebotelimab has been engineered to concomitantly or independently bind to PD-1 and LAG-3 and disrupt these non-redundant inhibitory pathways to further restore exhausted T-cell function. Tebotelimab is being evaluated in a Phase 1 dose expansion study as monotherapy in several tumor types, including both solid tumors and hematological malignancies, and in combination with margetuximab, an investigational Fc-engineered monoclonal antibody targeting HER-2, in three cohorts of patients with advanced HER2-positive cancers (NCT03219268). Tebotelimab will also be evaluated in combination with margetuximab and chemotherapy as part of the ongoing Phase 2/3 MAHOGANY study in patients with HER2-positive gastric or gastroesophageal junction cancer (NCT04082364). MacroGenics’ regional partner in
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Source: MacroGenics, Inc.