On September 18, 2020 Autolus Therapeutics plc (Nasdaq: AUTL), a clinical-stage biopharmaceutical company developing next-generation programmed T cell therapies, reported new data highlighting progress on AUTO3, the company’s CAR T cell therapy being investigated in the ALEXANDER study, a Phase 1/2 clinical trial in relapsed/refractory diffuse large B cell lymphoma (DLBCL), during the European Society for Medical Oncology (ESMO) (Free ESMO Whitepaper) Virtual Congress 2020, beginning 18 September (Press release, Autolus, SEP 18, 2020, View Source [SID1234565356]).
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"Today we presented data from our recommended Phase 2 dose cohort from the ALEXANDER trial of AUTO3, a CD19 and CD22 dual targeting CAR T product candidate in DLBCL. The data support a best in class profile with a high level of complete remissions and a well tolerated safety profile," said Dr. Christian Itin, chairman and chief executive officer of Autolus.
"AUTO3 has a tolerable and very favorable safety profile when compared with approved CD19 CAR T therapies," said Dr Craig Moskowitz, Professor of Medicine at Miller School of Medicine, University of Miami Health System. "It has a promising complete response rate of 64%, as demonstrated in the completed cohorts at the recommended Phase 2 dose range and, thus far, these complete remissions also appear durable. Among all dose cohorts with a median follow up of 6 months, 93% of the patients who achieved a complete response did not relapse."
As of the data cut-off date of August 3, 2020, 35 patients in the ALEXANDER Phase 1/2 clinical trial of AUTO3 have been treated and were evaluable for safety. AUTO3 was well tolerated, with no Grade 3 or higher cytokine release syndrome (CRS) with primary infusion and low rates of neurotoxicity (NT). Across all 35 patients, only three cases of NT have been reported, with two having ³Grade 3. Among the 20 patients treated at a dose of ³ 150 x 106 cells with pre-conditioning pembrolizumab on day minus 1 (D-1), which is the declared recommended Phase 2 dose (RP2D), one patient experienced ³Grade 3 NT (patient died due to disease progression and multiorgan failure). None of the patients achieving a complete response (CR) experienced any NT and all cases of NT reported have been atypical in nature and seen in a setting with disease progression and confounding factors.
In terms of efficacy data, of the 35 patients dosed to date, 30 patients were evaluable within their completed cohort. The cohort receiving a dose of ³ 150 x 106 cells and pre-conditioning pembrolizumab D-1 (the RP2D) had an objective response rate (ORR) of 71% and CR rate of 64%. For all patients on study across all dose levels that were evaluable, the ORR was 68% and CR rate of 54%.
Investor call on Friday September 18, 2020
Management will host a conference call and webcast today at 8:00 am EDT/1:00 pm BST to discuss the ESMO (Free ESMO Whitepaper) data. To listen to the webcast and view the accompanying slide presentation, please go to: View Source The call may also be accessed by dialing (866) 652-5200 for U.S. and Canada callers or (412) 317-6060 for International callers. Please ask to be joined into the Autolus Therapeutics call. After the conference call, a replay will be available for one year on Autolus’ website.