December 09, 2019
-- 93 Percent of Patients Treated with Investigational KTE-X19 Achieved Response, Including 67 Percent with a Complete Response --
-- Findings Support Regulatory Filings for Kite’s Second CAR T Cell Therapy --
-- Data Presented at
“There is a significant need for novel treatment options for patients with MCL, especially those whose disease has progressed following several lines of previous therapy,” said
With a median follow-up of 12.3 months (range: 7.0 to 32.3 months) at the time of data cutoff, 57 percent of patients remained in an ongoing response. Of the first 28 patients treated (minimum follow-up of 24 months), 43 percent were alive and remained in continued remission without additional therapy. The 12-month estimates of progression-free survival (PFS) and overall survival (OS) were 61 percent and 83 percent, respectively. Median duration of response, PFS and OS were not yet reached.
Among the 68 patients evaluable for safety, cytokine release syndrome (CRS) and neurologic events were observed in 91 percent and 63 percent of patients, respectively. Grade 3 or higher CRS and neurologic events were seen in 15 percent and 31 percent of patients, respectively. No Grade 5 CRS or neurologic events occurred.
“Today’s results represent a significant milestone for Kite and for the MCL community,” said
Based on the results of the trial, Kite plans to submit a Biologics License Application (BLA) for KTE-X19 to the
KTE-X19 is investigational and not approved anywhere globally. Its efficacy and safety have not been established. More information about clinical trials with KTE-X19 is available at www.clinicaltrials.gov.
MCL is a rare form of non-Hodgkin lymphoma (
ZUMA-2 is a single-arm, multicenter, open-label Phase 2 study involving 74 enrolled/leukapheresed adult patients (≥18 years old) with MCL whose disease is refractory to or has relapsed following up to five prior lines of therapy, including anthracycline or bendamustine-containing chemotherapy, anti-CD20 monoclonal antibody therapy and the BTK inhibitors ibrutinib or acalabrutinib. The objectives of the study are to evaluate the efficacy (60 patients) and safety (68 patients) after a single infusion of KTE-X19 in this patient population. The primary endpoint for the study is objective response rate (ORR). ORR in this trial is defined as the combined rate of complete responses and partial responses as assessed by an Independent Radiology Review Committee.
Secondary endpoints include duration of response, best objective response, progression-free survival, overall survival, incidence of adverse events, incidence of anti-CD19 CAR antibodies, levels of anti-CD19 CAR T cells in blood, levels of cytokines in serum, and changes over time in the EQ-5D scale score and visual analogue scale score. The study is ongoing.
KTE-X19 is an investigational, autologous, anti-CD19 CAR T cell therapy. KTE-X19 uses the XLP™ manufacturing process that includes T-cell selection and lymphocyte enrichment. Lymphocyte enrichment is a necessary step in certain B-cell malignancies with evidence of circulating lymphoblasts. KTE-X19 is currently in Phase 1/2 trials in acute lymphoblastic leukemia (ALL), mantle cell lymphoma (MCL) and chronic lymphocytic leukemia (CLL).
This press release includes forward-looking statements, within the meaning of the Private Securities Litigation Reform Act of 1995 that are subject to risks, uncertainties and other factors, including the possibility of unfavorable results from other ongoing and additional clinical trials involving KTE-X19. There is also the possibility that Kite may be unable to file a Biologics License Application to the
XLP is a trademark of
For more information on Kite, please visit the company’s website at www.kitepharma.com or call Gilead Public Affairs at 1-800-GILEAD-5 or 1-650-574-3000. Follow Kite on social media on Twitter (@KitePharma) and LinkedIn.
Source: Kite, a
Greg Mann, Investors
Nathan Kaiser, Media