Credit: Charles Haymond
The European Commission has granted KTE-C19, a chimeric antigen receptor (CAR) T-cell therapy, orphan designation to treat patients with diffuse large B-cell lymphoma (DLBCL) in the European Union (EU).
To create KTE-C19, a patient’s T cells are genetically modified using a gammaretroviral vector to express a CAR designed to target CD19, a protein expressed on B cells.
The product received orphan designation to treat DLBCL in the US last March.
“We are pleased with the approval of orphan drug designation for KTE-C19 in the EU, another important milestone for Kite Pharma and for the progress of our lead program,” said Arie Belldegrun, MD, President and CEO of Kite Pharma, Inc., the company developing KTE-C19.
Orphan designation by the European Commission provides regulatory and financial incentives for companies to develop and market therapies that treat a life-threatening or chronically debilitating condition affecting no more than 5 in 10,000 persons in the EU, and where no satisfactory treatment is available.
In addition to a 10-year period of marketing exclusivity in the EU after product approval, orphan drug designation provides incentives for companies seeking protocol assistance from the European Medicines Agency during the product development phase, and direct access to the centralized authorization procedure.
KTE-C19 in DLBCL
In a study published in the Journal of Clinical Oncology last year, researchers evaluated KTE-C19 in 15 patients with advanced B-cell malignancies.
The patients received a conditioning regimen of cyclophosphamide and fludarabine, followed 1 day later by a single infusion of KTE-C19. The researchers noted that the conditioning regimen is known to be active against B-cell malignancies and could have made a direct contribution to patient responses.
Of the 7 patients with chemotherapy-refractory DLBCL, 4 achieved a complete response to treatment, 2 achieved a partial response, and 1 had stable disease. Three of the complete responses were ongoing at the time of publication, with the duration ranging from 9 months to 22 months.
In the entire patient population, KTE-C19 elicited a number of adverse events, including fever, hypotension, delirium, and other neurologic toxicities. All but 2 patients experienced grade 3/4 adverse events.
Three patients developed unexpected neurologic abnormalities. One patient experienced aphasia and right-sided facial paresis. One patient developed aphasia, confusion, and severe, generalized myoclonus. And 1 patient had aphasia, confusion, hemifacial spasms, apraxia, and gait disturbances.
For more information on KTE-C19, visit Kite Pharma’s website.
