On May 5, 2021 ADC Therapeutics SA (NYSE: ADCT), a commercial-stage biotechnology company leading the development of novel antibody drug conjugates (ADCs) to treat hematological malignancies and solid tumors, reported ZYNLONTA (loncastuximab tesirine-lpyl) has been included in the latest National Comprehensive Cancer Network Clinical Practice Guidelines (NCCN Guidelines) in oncology for B-cell Lymphomas (Press release, ADC Therapeutics, MAY 5, 2021, View Source [SID1234579402]). Specifically, the NCCN Guidelines now include ZYNLONTA as a category 2A designation as a treatment option for adult patients with relapsed or refractory diffuse large B-cell lymphoma (DLBCL) after two or more lines of systemic therapy.
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"We were pleased to learn that less than two weeks after accelerated FDA approval, ZYNLONTA was added to the NCCN treatment guidelines with a category 2A recommendation," said Chris Martin, Chief Executive Officer of ADC Therapeutics. "Inclusion in the NCCN treatment guidelines highlights the high unmet medical need for a differentiated, targeted therapy in relapsed and refractory diffuse large B-cell lymphoma."
"The rapid inclusion of ZYNLONTA in the NCCN guidelines reinforces our work on behalf of patients who have been heavily pretreated and have difficult-to-treat disease," said Jay Feingold, MD, PhD, Senior Vice President and Chief Medical Officer of ADC Therapeutics. "Importantly, there is a broad range of pretreated patients needing new therapies, including those who are transplant eligible and ineligible, and patients who previously received stem cell transplant or CAR-T cell therapy."
On April 23, 2021, the U.S. Food and Drug Administration (FDA) granted accelerated approval to ZYNLONTA (loncastuximab tesirine-lpyl) for the treatment of adult patients with relapsed or refractory (r/r) large B-cell lymphoma after two or more lines of systemic therapy, including diffuse large B-cell lymphoma (DLBCL) not otherwise specified (NOS), DLBCL arising from low-grade lymphoma and also high-grade B-cell lymphoma. This indication was based on overall response rate. Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial.
DLBCL, the most common type of non-Hodgkin lymphoma in the United States, is a rapidly progressing, aggressive disease that is heterogeneous with multiple subtypes.1 More than 40% of first-line DLBCL treatments fail.2 For patients who fail first-line therapy, prognoses are poor, worsening with each line of therapy as the chance for cure or long-term disease-free survival diminishes.3, 4
NCCN is a not-for-profit alliance of 31 leading cancer centers devoted to patient care, research, and education. NCCN is dedicated to improving and facilitating quality, effective, efficient, and accessible cancer care so patients can live better lives.
The updated NCCN guidelines are available at www.nccn.org.
About ZYNLONTATM (loncastuximab tesirine-lpyl)
ZYNLONTATM is a CD19-directed antibody drug conjugate (ADC). Once bound to a CD19-expressing cell, ZYNLONTA is internalized by the cell, where enzymes release a pyrrolobenzodiazepine (PBD) payload. The potent payload binds to DNA minor groove with little distortion, remaining less visible to DNA repair mechanisms. This ultimately results in cell cycle arrest and tumor cell death.
The U.S. Food and Drug Administration (FDA) has approved ZYNLONTA (loncastuximab tesirine-lpyl) for the treatment of adult patients with relapsed or refractory (r/r) large B-cell lymphoma after two or more lines of systemic therapy, including diffuse large B-cell lymphoma (DLBCL) not otherwise specified (NOS), DLBCL arising from low-grade lymphoma and also high-grade B-cell lymphoma. This indication is approved by the FDA under accelerated approval based on overall response rate and continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial.
ZYNLONTA is also being evaluated as a therapeutic option in combination studies in other B-cell malignancies and earlier lines of therapy.