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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 or 15(d)
of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 31, 2024
Autolus Therapeutics plc
(Exact name of registrant as specified in its Charter)

England and Wales
001-38547
Not applicable
(State or other jurisdiction of incorporation or organization)
(Commission File Number)
(I.R.S. Employer Identification No.)
The Mediaworks
191 Wood Lane
LondonW12 7FP
United Kingdom
(Address of principal executive offices)(Zip Code)
(44) 20
3829 6230
(Registrant's telephone number, including area code)
Not Applicable
(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))



Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
American Depositary Shares, each representing one ordinary share, nominal value $0.000042 per share
AUTLThe Nasdaq Global Select Market
Ordinary shares, nominal value $0.000042 per share**
The Nasdaq Stock Market LLC*
*
Not for trading, but only in connection with the listing of the American Depositary Shares on The Nasdaq Global Select Market. The American Depositary Shares represent the right to receive ordinary shares and are being registered under the Securities Act of 1933, as amended, pursuant to a separate Registration Statement on Form F-6. Accordingly, the American Depositary Shares are exempt from the operation of Section 12(a) of the Securities Exchange Act of 1934, as amended, pursuant to Rule 12a-8 thereunder.
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Item 7.01 Regulation FD Disclosure.
On May 31, 2024, Autolus Therapeutics plc issued a press release announcing data being presented at the 2024 American Society of Clinical Oncology (ASCO) Annual Meeting, including longer-term follow-up and additional data analysis from the pivotal Phase Ib/II FELIX study of obecabtagene autoleucel (obe-cel) in relapsed/refractory (r/r) adult B-cell Acute Lymphoblastic Leukemia (ALL). The press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.
From time to time, Autolus Therapeutics plc (the “Company”) presents and/or distributes slides and presentations to the investment community to provide updates and summaries of its business. On June 1, 2024, a conference call and webcast to discuss the presented data was held at 9:30 am EDT/8:30 am CDT/2:30 pm BST. The presentation for such conference call is furnished as Exhibit 99.2 to this Current Report on Form 8-K.
The information contained in the press release and presentation furnished as Exhibit 99.1 and Exhibit 99.2, respectively, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and is not incorporated by reference into any of the Company’s filings under the Securities Act of 1933, as amended, or the Exchange Act, whether made before or after the date hereof, except as shall be expressly set forth by specific reference in any such filing.



Item 9.01 Financial Statements and Exhibits
d) Exhibits
Exhibit No.Description of Exhibit
104Cover Page Interactive Data File (embedded within XBRL document)
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
AUTOLUS THERAPEUTICS PLC
Dated: June 3, 2024By:/s/Christian Itin, Ph.D.
Name: Christian Itin, Ph.D.
Title: Chief Executive Officer



Autolus Therapeutics presents longer-term follow-up and additional data analysis of Pivotal Phase 2 FELIX study of obe-cel for adult r/r B-ALL in an oral presentation at ASCO May 31, 2024 at 8:00 AM EDT The majority of patients that responded to obe-cel showed durable responses with the potential for a long-term plateau of survival outcomes 40% patients are in ongoing remission without subsequent stem cell transplant (SCT) or other intervention Ongoing CAR T persistence was associated with improved event-free survival Autolus will host a conference call and webcast to discuss the presented data on Saturday June 1, 2024 at 9:30 am EDT/8:30 am CDT/2:30 pm BST (details below) LONDON, May 31, 2024 (GLOBE NEWSWIRE) -- Autolus Therapeutics plc (Nasdaq: AUTL), a clinical-stage biopharmaceutical company developing next-generation programmed T cell therapies, today announces longer-term follow-up and additional data analysis from the pivotal Phase 1b/2 FELIX study of obecabtagene autoleucel (obe-cel) in relapsed/refractory (r/r) adult B-cell Acute Lymphoblastic Leukemia (ALL), being presented at the 2024 American Society of Clinical Oncology (ASCO) Annual Meeting, (May 31 – June 4, 2024, Chicago). “At 21 months of median follow up, we’re really pleased to be observing the potential for a long-term plateau of survival outcomes with obe-cel in the FELIX trial,” said Dr. Christian Itin, Chief Executive Officer of Autolus. “40% of patients are in ongoing remission without Stem Cell Transplant (SCT) or other therapy, and we continue to see evidence that ongoing CAR T persistence is associated with this event-free survival. This pattern is consistent with our Phase 1 ALLCAR19 data and provides further support that obe-cel, as a standalone therapy, can result in long-term survival and durable responses in adult patients with r/r ALL.” The results of the FELIX trial have been submitted to the FDA as part of a BLA. The PDUFA target action date is November 16, 2024. ASCO Oral Presentation, abstract #6504: Title: Obecabtagene autoleucel (obe-cel, AUTO1) in adults with relapsed/refractory B-cell acute lymphoblastic leukemia (R/R B-ALL): Overall survival (OS), event-free survival (EFS) and the potential impact of chimeric antigen receptor (CAR)-T cell persistency and the potential impact of chimeric antigen receptor (CAR)-T cell persistency and consolidative stem cell transplantation (SCT) in the open-label, single-arm FELIX Phase Ib/II study Session Title:   Oral Abstract Session – Hematologic Malignancies—Leukemia, Myelodysplastic Syndromes, and Allotransplant Session date and time: Friday, May 31, 2024, 14:45 – 17:45 EDT, 19:45 – 22:45 BST Presenting Author: Dr Elias Jabbour, Professor, Department of Leukemia, Division of Cancer Medicine, MD Anderson Cancer Center, Houston, TX Summary: The ORR (CR/CRi) in all patients who received obe-cel in the FELIX study was 78% (99/127 patients). At the February 7, 2024, data cut-off date, the majority of ongoing responders showed durable responses. Among the responding patients, at a median follow up of 21.45 months (range: 8.6–41.4), 40% were in ongoing remission without subsequent SCT or other therapy, while 18% proceeded to subsequent SCT while in remission, 5% started new anti-cancer therapy while in remission and 36% relapsed or died. The median event-free survival (EFS) was 11.9 months and median overall survival (OS) was 23.8 months and the estimated 12-month EFS and OS rates were 49.5% and 61.1% respectively. 18 of 99 responders (18%) had SCT while in MRD-negative remission. 10 of the 18 (56%) had ongoing CAR T persistency prior to SCT, with eight of these 10 patients (80%) experiencing relapse or death post SCT. Eight out of 18 (44%) patients had lost CAR T persistency prior to SCT, with five of those eight patients (62%) experiencing relapse prior to SCT or death post SCT. Overall, consolidative SCT for patients post-obe-cel did not appear to improve EFS or OS. CAR T persistence and B-cell aplasia were both associated with improved EFS compared with loss of persistency and B-cell recovery. Patients with loss of CAR T persistence had a 2.7 fold increased risk of relapse or death compared to patients with ongoing CAR T persistence. Patients who experienced B-cell recovery had a 1.7 fold increased risk of relapse or compared with patients without B-cell recovery. Among patients with CR/CRi beyond 6 months without SCT or new therapies, patients with ongoing CAR T persistence are associated with improved EFS vs. those with a loss of CAR T persistence. In conclusion these data support the potential of a long-term plateau of survival outcomes in patients receiving obe-cel. At a median follow-up of 21.3 months 40% of responders are in ongoing remission without SCT or other therapy and ongoing CAR T persistence and B-cell aplasia were associated with improved EFS. This pattern is consistent with the Phase 1 ALLCAR19 data. Furthermore, SCT consolidation in remission following obe-cel did not appear to improve EFS or OS. A conference call and webcast to discuss the presented data will be held at 9:30 am EDT/8:30 am CDT/2:30 pm BST on Saturday June 1, 2024. Conference call participants should pre-register using this link to receive the dial-in numbers and a personal PIN, which are required to access the conference call.


 
A simultaneous audio webcast and replay will be accessible on the events section of Autolus’ website. About Autolus Therapeutics plc Autolus is a clinical-stage biopharmaceutical company developing next-generation, programmed T cell therapies for the treatment of cancer and autoimmune disease. Using a broad suite of proprietary and modular T cell programming technologies, Autolus is engineering precisely targeted, controlled and highly active T cell therapies that are designed to better recognize target cells, break down their defense mechanisms and eliminate these cells. Autolus has a pipeline of product candidates in development for the treatment of hematological malignancies, solid tumors and autoimmune diseases. For more information, please visit www.autolus.com About obe-cel (AUTO1) Obe-cel is a CD19 CAR T cell investigational therapy designed to overcome the limitations in clinical activity and safety compared to current CD19 CAR T cell therapies. Obe-cel is designed with a fast target binding off-rate to minimize excessive activation of the programmed T cells. In clinical trials of obe-cel, this “fast off-rate” profile reduced toxicity and T cell exhaustion, resulting in improved persistence and leading to high levels of durable remissions in r/r Adult ALL patients. The results of the FELIX trial, a pivotal trial for adult ALL, have been submitted and accepted by the FDA with a PDUFA target action date of November 16, 2024. A regulatory submission to the EMA was made in the first half of 2024. In collaboration with Autolus’ academic partner, UCL, obe-cel is currently being evaluated in a Phase 1 clinical trials for B-NHL. About obe-cel FELIX clinical trial Autolus’ Phase 1b/2 clinical trial of obe-cel enrolled adult patients with relapsed / refractory B-precursor ALL. The trial had a Phase 1b component prior to proceeding to the single arm, Phase 2 clinical trial. The primary endpoint was overall response rate, and the secondary endpoints included duration of response, MRD negative CR rate and safety. The trial enrolled over 100 patients across 30 of the leading academic and non-academic centers in the United States, United Kingdom and Europe. [NCT04404660] Forward-Looking Statements This press release contains forward-looking statements within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that are not historical facts, and in some cases can be identified by terms such as "may," "will," "could," "expects," "plans," "anticipates," and "believes." These statements include, but are not limited to, statements regarding Autolus’ development and commercialization of its product candidates, timing of data announcements and regulatory submissions, its cash resources and the market opportunity for obe-cel. Any forward-looking statements are based on management's current views and assumptions and involve risks and uncertainties that could cause actual results, performance, or events to differ materially from those expressed or implied in such statements. These risks and uncertainties include, but are not limited to, the risks that Autolus’ preclinical or clinical programs do not advance or result in approved products on a timely or cost effective basis or at all; the results of early clinical trials are not always being predictive of future results; the cost, timing and results of clinical trials; that many product candidates do not become approved drugs on a timely or cost effective basis or at all; the ability to enroll patients in clinical trials; and possible safety and efficacy concerns. For a discussion of other risks and uncertainties, and other important factors, any of which could cause Autolus’ actual results to differ from those contained in the forward-looking statements, see the section titled "Risk Factors" in Autolus' Annual Report on Form 10-K filed with the Securities and Exchange Commission, or the SEC, on March 21, 2024 as well as discussions of potential risks, uncertainties, and other important factors in Autolus' subsequent filings with the Securities and Exchange Commission. All information in this press release is as of the date of the release, and Autolus undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future events, or otherwise, except as required by law. You should, therefore, not rely on these forward-looking statements as representing Autolus’ views as of any date subsequent to the date of this press release.  Contact: Olivia Manser +44 (0) 7780 471 568 o.manser@autolus.com Julia Wilson +44 (0) 7818 430877 j.wilson@autolus.com Susan A. Noonan S.A. Noonan Communications +1-917-513-5303 susan@sanoonan.com


 
American Society of Clinical Oncology Analyst Call 1 June 2024 Autolus.com


 
Disclaimer These slides contain forward-looking statements within the meaning of the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that are not historical facts, and in some cases can be identified by terms such as “may,” “will,” “could,” “expects,” “plans,” “anticipates,” and “believes.” These statements include, but are not limited to, statements regarding Autolus’ development of its product candidates, including the obe-cel program; the profile and potential application of obe- cel in additional disease settings; the future clinical development, efficacy, safety and therapeutic potential of the Company’s product candidates, including progress, expectations as to the reporting of data, conduct and timing and potential future clinical and preclinical activity and milestones; expectations regarding the initiation, design and reporting of data from clinical trials and preclinical studies; the extension of the pipeline beyond obe-cel; expectations regarding the regulatory approval process for any product candidates; the benefits of the collaboration between Autolus and BioNTech, including the potential and timing of milestone payments and royalties under the terms of the strategic collaboration; the Company’s current and future manufacturing capabilities; and the Company’s anticipated cash runway. Any forward-looking statements are based on management’s current views and assumptions and involve risks and uncertainties that could cause actual results, performance, or events to differ materially from those expressed or implied in such statements. These risks and uncertainties include, but are not limited to, the risks that Autolus’ preclinical or clinical programs do not advance or result in approved products on a timely or cost effective basis or at all; the results of early clinical trials are not always being predictive of future results; the cost, timing and results of clinical trials; that many product candidates do not become approved drugs on a timely or cost effective basis or at all; the ability to enroll patients in clinical trials; and possible safety and efficacy concerns. For a discussion of other risks and uncertainties, and other important factors, any of which could cause Autolus’ actual results to differ from those contained in the forward-looking statements, see the section titled “Risk Factors” in Autolus' Annual Report on Form 10-K filed with the Securities and Exchange Commission, or the SEC, on March 21, 2024, as well as discussions of potential risks, uncertainties, and other important factors in Autolus’ subsequent filings with the Securities and Exchange Commission. All information in this presentation is as of the date of the presentation, and Autolus undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future events, or otherwise, except as required by law. You should, therefore, not rely on these forward-looking statements as representing the Company’s views as of any date subsequent to the date of this presentation. Developing Next Generation Programmed T Cell Therapies 2


 
Agenda 3 Developing Next Generation Programmed T Cell Therapies • Welcome and Introduction: Olivia Manser, Director, Investor Relations • The obe-cel program to date: Dr. Christian Itin, CEO • ASCO Data: Dr. Claire Roddie • Q&A: Dr. Christian Itin and Dr. Claire Roddie


 
Autolus overview – scaling towards commercialization Obe-cel potentially best in class CAR T for r/r adult ALL • FELIX pivotal trial showed high ORR, encouraging EFS and favorable tolerability with low levels of high-grade CRS and ICANS • PDUFA target action date November 16, 2024 • EMA filing submitted Developing Next Generation Programmed T Cell Therapies 4 Building a leading CAR T company developing therapies for cancer and autoimmune diseases Pipeline expansion strategy • Expand obe-cel opportunity in B cell malignancies, autoimmune diseases & life cycle strategy – SLE – B-NHL indications – Bi-specific therapies (CD19 /CD22; CD19/BCMA) • Expand to additional indications with novel CAR T therapies, alone or with partners Scalable manufacturing and in-house facility • Demonstrated reliable clinical trial supply (96% target dose reached in FELIX pivotal study) • New commercial cell manufacturing facility in qualification stage; planned annual capacity 2,000+ batches • Expected vein-to-delivery time at launch of ~16 days Strategic collaborations • Strategic multi-platform R&D collaboration with BioNTech • Established technology collaborations with Moderna, BMS and Cabaletta • Long-standing academic collaboration with University College London Strong cash position • Cash $759M end of Q1 2024 • Fully funds obe-cel launch in adult ALL and allows for autoimmune program acceleration Abbreviations and notes: r/r ALL – relapsed/refractory acute lymphoblastic leukemia; B-NHL – B-cell non-Hodgkin’s lymphoma; SLE – systemic lupus erythematosus $


 
obe-cel program evolution OBE-CEL FOR ALL


 
The FELIX phase 1b/2 study Developing Next Generation Programmed T Cell Therapies 6 1United States Department of Transportation, Bureau of Transportation Statistics 2021 [online]. Available at: https://www.bts.gov/data-spotlight/commercial-aviation-2020-downturn-airline-passengers-employment-profits-and-flights Accessed October 2023; 2World Health Organization COVID–19 dashboard [online]. Available at: https://covid19.who.int/ Accessed October 2023 • US international airline flights decreased by 41% compared to flights from pre-COVID–19 pandemic1 • BUT international flights are reliable and on time • Sample collection and drug product delivery were successfully maintained, with no batches impacted Ph1b Start PhII Start Reliable obe-cel supply for FELIX despite the COVID–19 pandemic


 
ASH2023: FELIX Phase 1b/2 pooled analysis: EFS in all treated patients* • Median follow-up time was 16.6 months (range: 3.7−36.6 months) • 17/99 (17%) responders proceeded to SCT while in remission Developing Next Generation Programmed T Cell Therapies 7 The event-free survival estimate at 12 months was 50% *Censoring new non-protocol anti-cancer therapies including SCT with disease assessment by IRRC (data cut-off date: September 13, 2023); Median EFS: ITT population − 9.8 months (95% CI: 5.9, 12.9); CI, confidence interval; EFS, event-free survival; IRRC, Independent Response Review Committee; ITT, intent-to-treat; NE, not evaluable; obe-cel, obecabtagene autoleucel; SCT, stem cell transplant; Roddie et al., ASH 2023 Events, n: Overall Median (95% CI): Overall 59 11.7 (7.2, NE) Pr ob ab ili ty (% ) 0 10 20 30 40 50 60 70 80 90 100 Time (months) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 Overall (N = 127) Patients at risk 127 104 94 85 78 68 60 55 52 45 34 33 29 27 27 22 18 18 16 12 12 6 5 4 4 4 3 3 3 3 2 2 2 2 2 2 1 0 All treated patients (N = 127) Median EFS (95% CI), months 11.7 (7.2, NE) 6-month EFS (95% CI), % 65 (56, 73) 12-month EFS (95% CI), % 50 (39, 59)


 
ASH2023: EFS by leukemic burden prior to lymphodepletion* Developing Next Generation Programmed T Cell Therapies 8 Lower leukemic burden is associated with better outcomes *Censoring new non-protocol anti-cancer therapies including SCT with disease assessment by IRRC (data cut-off date: September 13, 2023); BM, bone marrow; CI, confidence interval; EFS, event-free survival; IRRC, Independent Response Review Committee; NE, not evaluable; SCT, stem cell transplant; Roddie et al., ASH 2023 BM blasts % prior to lymphodepletion <5% (n = 36) ≥5−≤75% (n = 51) >75% (n = 40) Median EFS (95% CI), months NE 15.0 (6.6, NE) 4.5 (1.5, 9.0) 6-month EFS (95% CI), % 83 (65, 92) 72 (57, 82) 40 (23, 56) 12-month EFS (95% CI), % 65 (44, 80) 55 (38, 69) 27 (12, 44) Events, n: <5% 10 ≥5−≤75% 22 >75% 27 Median (95% CI): <5% NE ≥5−≤75% 15 (6.6, NE) >75% 4.5 (1.5, 9.0) Patients at risk <5% (n = 36) ≥5−≤75% (n = 51) >75% (n = 40) <5% (n = 36) ≥5−≤75% (n = 51) >75% (n = 40) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 36 34 31 28 25 24 22 20 19 18 14 13 11 11 11 11 8 8 7 6 6 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 0 0 51 43 41 39 36 31 28 25 23 18 15 15 13 12 12 9 8 8 7 4 4 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 40 27 22 18 17 13 10 10 10 9 5 5 5 4 4 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 Time (months) 0 10 20 30 40 50 60 70 80 90 100 Pr ob ab ili ty (% )


 
ASH2023 FELIX Phase 1b/2 pooled analysis: CRS and ICANS • No grade ≥3 CRS and/or ICANS were observed in patients with <5% BM blasts at lymphodepletion • Vasopressors were used to treat CRS in 2.4% of patients • The treatment was generally well tolerated • Two deaths were considered treatment-related per investigator assessment: neutropenic sepsis (n = 1); acute respiratory distress syndrome and ICANS (n = 1) Developing Next Generation Programmed T Cell Therapies 9 Low rates of Grade ≥3 CRS and/or ICANS were observed BM, bone marrow; CRS, cytokine release syndrome; ICANS, immune effector cell-associated neurotoxicity syndrome; ICU, intensive care unit; Roddie et al., ASH 2023 BM blasts % at lymphodepletion 2% 7% 20 0 40 60 80 100 In ci de nc e, % CRS ICANS 0% 4% 3% 20 0 40 60 80 100 In ci de nc e, % <5% ≥5−≤75% >75% 0% 6% 15% 20 0 40 60 80 100 In ci de nc e, % <5% ≥5−≤75% >75% CRS and ICANS in all patients CRS by % BM blasts ICANS by % BM blasts Light colors = grade ≤2 Dark colors = grade ≥3 69% 23% 47% 69% 88% 8% 18% 43%


 
ASCO 2024


 
PRESENTED BY: OBECABTAGENE AUTOLEUCEL (OBE-CEL, AUTO1) IN ADULTS WITH RELAPSED/REFRACTORY B-CELL ACUTE LYMPHOBLASTIC LEUKEMIA: OVERALL SURVIVAL, EVENT-FREE SURVIVAL AND THE POTENTIAL IMPACT OF CHIMERIC ANTIGEN RECEPTOR T-CELL PERSISTENCY AND CONSOLIDATIVE STEM CELL TRANSPLANTATION IN THE OPEN-LABEL, SINGLE-ARM FELIX PHASE IB/II STUDY Elias Jabbour,1 Eleni Tholouli,2 Karamjeet S. Sandhu,3 Paul Shaughnessy,4 Pere Barba,5 Manuel Guerreiro,6 Deborah Yallop,7 Aaron C. Logan,8 Mehrdad Abedi,9 Pierre Lao-Sirieix,10 Yiyun Zhang,11 Wolfram Brugger,12 Martin A. Pule,10 Bijal D. Shah,13 Michael R. Bishop,14 Jae H. Park,15 Daniel J. DeAngelo,16 Karl Peggs,17 Claire Roddie17 1University of Texas MD Anderson Cancer Center, Houston, TX, USA; 2Manchester Royal Infirmary, Manchester, UK; 3City of Hope National Medical Center, Duarte, CA, USA; 4Sarah Cannon Transplant and Cellular Therapy Program, Methodist Hospital, San Antonio, TX, USA; 5Hospital Universitari Vall d’Hebron-Universitat Autónoma de Barcelona, Barcelona, Spain; 6Hospital Universitari I Politècnic La Fe, Valencia, Spain; 7King’s College Hospital London, UK; 8Hematology, Blood and Marrow Transplantation, and Cellular Therapy Program, University of California at San Francisco, San Francisco, CA, USA; 9University of California Davis, Davis, CA, USA; 10Autolus Therapeutics, London, UK; 11Autolus Therapeutics, Rockville, MD, USA; 12Autolus Therapeutics, Munich, Germany; 13Moffitt Cancer Center, Tampa, FL, USA; 14The David and Etta Jonas Center for Cellular Therapy, University of Chicago, Chicago, IL, USA; 15Memorial Sloan Kettering Cancer Center, New York, NY, USA; 16Dana-Farber Cancer Institute, Boston, MA, USA; 17University College London Cancer Institute, London, UK Prof. Elias Jabbour Publication Number: 6504


 
PRESENTED BY: 12 • 40% of responders in ongoing remission without subsequent SCT/other therapy, with a median follow-up of 21.5 months • Survival outcomes show potential of long-term plateau • SCT consolidation in remission following obe-cel did not improve EFS or OS • Ongoing CAR T persistence was associated with improved EFS Prof. Elias Jabbour Obe-cel in adult R/R B-ALL: OS, EFS and impact of CAR T persistence and consolidative SCT in the FELIX study Takeaway messages


 
PRESENTED BY: 13 • A novel fast off-rate anti-CD19 autologous CAR T-cell therapy • Potential to improve persistence and reduce immune-mediated toxicity • FELIX (NCT04404660): an open-label, multi-center, single-arm Phase Ib/II study evaluating safety and efficacy of obe-cel in adult R/R B-ALL1–3 • Patient enrollment period: June 2020–November 2022 Prof. Elias Jabbour Here, we present EFS, OS and impact of CAR T persistence and consolidative SCT in patients treated with obe-cel* 1. Roddie C, et al. J Clin Oncol 2023;41(Supplement 16):7000; 2. Roddie C, et al. Blood 2023;142(Supplement 1):222; 3. Roddie C, et al. Blood 2023;142(Supplement 1):2114. Background: Obe-cel Obe-cel in adult R/R B-ALL: OS, EFS and impact of CAR T persistence and consolidative SCT in the FELIX study *The safety profile of obe-cel, evaluated in FELIX, has previously been presented in detail1,2 and will not be discussed during this presentation


 
PRESENTED BY: 14 Prof. Elias Jabbour Screening Leukapheresis Split dose infusion Day 1 Day 10 Enrollment Bridging therapy Efficacy and safety follow-up Cy 500 mg/m2 Lymphodepletion Flu 30 mg/m2 Tumor burden-guided split dosing BM blasts ≤20% 100 × 106 CAR T-cells 310 × 106 CAR T-cells BM blasts >20% 10 × 106 CAR T-cells 400 × 106 CAR T-cells Lymphodepletion CRS Grade ≤1 No ICANS​ Obe-cel manufacturing BM within 7 days before initiating lymphodepletion BM Obe-cel in adult R/R B-ALL: OS, EFS and impact of CAR T persistence and consolidative SCT in the FELIX study Study design Tumor burden-guided split dosing Day 1 Day 10


 
PRESENTED BY: 15 Prof. Elias Jabbour Selected endpoints§ • CR/CRi rate per IRRC • DoR • EFS • OS • MRD-negativity rate (<10–4) • Safety • CAR T expansion/persistence • Manufacture feasibilityCohort A ≥5% BM blasts n = 107 (84%) Cohort B MRD-positive n = 13 (10%) Cohort C Isolated EMD n = 7 (6%) Enrolled† N = 153 Infused N = 127 Obe-cel in adult R/R B-ALL: OS, EFS and impact of CAR T persistence and consolidative SCT in the FELIX study Patient eligibility and endpoints 127/153 (83%) enrolled patients received obe-cel* *Seven patients received Dose 1 only. ‡R/R B-ALL: primary refractory; first relapse if first remission ≤12 months; R/R disease after ≥2 lines of systemic therapy; R/R disease after allogeneic transplant; R/R Philadelphia chromosome-positive ALL if intolerant to/failed two lines of any TKI or one line of second-generation TKI, or if TKI therapy is contraindicated.§Primary endpoints: Cohorts A and C, ORR defined as the proportion of patients achieving CR or CRi; Cohort IIB, the proportion of patients achieving MRD-negative remission (<10–4 leukemic cells).†All eligibility criteria met and the leukapheresate accepted for manufacturing. Discontinuations due to: manufacturing related, 7 (5%) and death/uncontrolled disease, 19 (12%). Key eligibility criteria • Adult R/R B-ALL‡ • Age ≥18 years Data cut-off date: February 7, 2024


 
PRESENTED BY: 16 Prof. Elias Jabbour Baseline characteristics Heavily pre-treated patients Cohort IIA ≥5% BM blasts (N = 94) Total (N = 127) Age in years, median (range) 50 (20–81) 47 (20–81) Gender, male/female 47/47 66/61 Hispanic or Latino, n (%) 29 (30.9) 38 (29.9) Philadelphia chromosome-positive, n (%) 25 (26.6) 36 (28.3) Complex karyotype, n (%)* 37 (39.4) 51 (40.2) Median prior lines of therapy (range) 2 (1–6) 2 (1–6) Number of prior lines of therapy, n (%) 3 ≥4 17 (18.1) 12 (12.8) 26 (20.5) 19 (15.0) Prior blinatumomab, n (%) Prior inotuzumab, n (%) Prior blinatumomab and inotuzumab, n (%) 33 (35.1) 30 (31.9) 15 (16.0) 53 (41.7) 40 (31.5) 21 (16.5) Prior allo-SCT, n (%) 36 (38.3) 56 (44.1) Disease burden (BM blast %) at screening, median (range) 58.9 (6–100) 40.0 (0–100) Extramedullary disease at screening, n (%) 19 (20.2) 29 (22.8) *Classification of cytogenetic risks of hematologic malignancies associated with a poor prognosis. Obe-cel in adult R/R B-ALL: OS, EFS and impact of CAR T persistence and consolidative SCT in the FELIX study


 
PRESENTED BY: 17 Prof. Elias Jabbour CR or CRi n = 99 (78%) Infused N = 127 Started new anti-cancer therapy n = 5 (5%) Subsequent SCT in remission (MRD-negative) n = 18 (18%) Ongoing remission without subsequent SCT or other therapy‡ n = 40 (40%) No response or not evaluable n = 28 Relapsed/ died n = 36 (36%) Data cut-off date: February 7, 2024 Median follow-up: 21.5 months (range: 8.6–41.4) Majority of responders show durable response 40% of responders are in ongoing remission without consolidative SCT and 18% had consolidative SCT Obe-cel in adult R/R B-ALL: OS, EFS and impact of CAR T persistence and consolidative SCT in the FELIX study


 
PRESENTED BY: 44.0 (35.2, 52.5) 127 12231017263647637991 Without censoring for SCT Without censoring for SCT 9.0 (6.57, 14.32) 18 Prof. Elias Jabbour Event-free survival Subset of patients benefit from standalone treatment with obe-cel • All (18/18) patients who had SCT in remission were MRD-negative • 10/18 patients (55.6%) had ongoing CAR T persistence prior to SCT (n = 2 ongoing without event; n = 8 relapse or death) • Characteristics similar between patients who did and did not undergo consolidative SCT Pr ob ab ili ty (% ) 90 80 70 60 50 40 30 20 10 100 0 Time (months)Patients at risk 12-month EFS rate (95% CI), %: Censoring for SCT (main analysis) 0 363534333231302928272625242322212019181716151413121110987654321 37 127 2315285385 129233865 Obe-cel in adult R/R B-ALL: OS, EFS and impact of CAR T persistence and consolidative SCT in the FELIX study Censoring for SCT 49.5 (39.6, 58.6) Median (95% CI), months: 11.9 (7.98, 22.11)


 
PRESENTED BY: Overall survival Potential long-term plateau 19 Pr ob ab ili ty (% ) 90 80 70 60 50 40 30 20 10 100 0 Time (months)Patients at risk 237255186108127 Without censoring for SCT (main analysis) 0 413937353331292725232119171513119751 3 43 Prof. Elias Jabbour Obe-cel in adult R/R B-ALL: OS, EFS and impact of CAR T persistence and consolidative SCT in the FELIX study 12-month OS rate (95% CI), %: Without censoring for SCT 61.1 (52.0, 69.0) 15.6 (12.91, NE) 63.7 (53.7, 72.0) 235193769100127 Censoring for SCT Censoring for SCT 23.8 (12.91, NE)Median (95% CI), months:


 
PRESENTED BY: 20 Prof. Elias Jabbour HR 2.7 (95% CI: 1.4, 5.3) HR 1.7 (95% CI: 0.7, 3.8) CAR T persistence and predicted relapse Ongoing CAR T persistence correlates with long-term EFS Pr ed ic te d EF S Loss of CAR T persistence at Month 6 Loss of CAR T persistence at Month 12 Ongoing CAR T persistence 0.8 0.6 0.4 0.2 1.0 0.0 Months since obe-cel infusion 0 363330272421181512963 Pr ed ic te d EF S B-cell recovery at Month 6 B-cell recovery at Month 12 Ongoing B-cell aplasia 0.8 0.6 0.4 0.2 1.0 0.0 Months since obe-cel infusion 0 363330272421181512963 Obe-cel in adult R/R B-ALL: OS, EFS and impact of CAR T persistence and consolidative SCT in the FELIX study


 
PRESENTED BY: 21 Prof. Elias Jabbour Landmark analysis among patients in ongoing remission at 6 months Ongoing CAR T persistence at 6 months is associated with improved EFS Obe-cel in adult R/R B-ALL: OS, EFS and impact of CAR T persistence and consolidative SCT in the FELIX study Ongoing persistence by Month 6 (N = 42) Loss of persistence by Month 6 (N = 18) 42 223111821394242 1 18 000346131818 0 Median (95% CI), months: 15.1 (8.11, NE)NE Loss of persistenceOngoing persistence Pr ob ab ili ty (% ) 90 80 70 60 50 40 30 20 10 100 0 Time (months) 0 363330272421181512963 Patients at risk 29 8 7 1 39 0 0 87.3 (72.0, 94.5)12-month EFS rate (95% CI), %: 59.3 (33.0, 78.1)


 
PRESENTED BY: 22 • 40% of responders in ongoing remission without subsequent SCT/other therapy, with a median follow-up of 21.5 months • 12-month EFS and OS rates 49.5% and 61.1%, respectively • Survival outcomes show potential of long-term plateau • SCT consolidation in remission following obe-cel did not improve EFS or OS • Ongoing CAR T persistence associated with improved EFS • Obe-cel may be considered a standard of care for adult R/R B-ALL Prof. Elias Jabbour Conclusions Obe-cel in adult R/R B-ALL: OS, EFS and impact of CAR T persistence and consolidative SCT in the FELIX study


 
PRESENTED BY: 23 • The authors would like to acknowledge:  Patients, families, friends and caregivers  Study investigators and coordinators  Healthcare staff at the study sites • Contact: Prof. Elias Jabbour ejabbour@mdanderson.org • Third-party medical writing assistance, under the direction of the authors, was provided by Michaella Hulley, MSc, of Ashfield MedComms (Johannesburg, South Africa), an Inizio Company, and was funded by Autolus PLC Prof. Elias Jabbour Acknowledgments Obe-cel in adult R/R B-ALL: OS, EFS and impact of CAR T persistence and consolidative SCT in the FELIX study


 
Newsflow Dr. Christian Itin


 
Autolus planned news flow Developing Next Generation Programmed T Cell Therapies 25 Anticipated Milestone or Data Catalysts Anticipated Timing Obe-cel FELIX data update at ASCO, EHA & ASH 2024 June & December 2024 Obe-cel Marketing Authorization Application to MHRA Second half 2024 Obe-cel U.S. FDA PDUFA target action date November 16, 2024 Obe-cel in autoimmune disease – initial data from SLE Phase 1 study Late 2024


 
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v3.24.1.1.u2
Cover
May 31, 2024
Cover [Abstract]  
Document Type 8-K
Document Period End Date May 31, 2024
Entity Registrant Name Autolus Therapeutics plc
Entity Incorporation, State or Country Code X0
Entity File Number 001-38547
Entity Address, Address Line One The Mediaworks
Entity Address, Address Line Two 191 Wood Lane
Entity Address, City or Town London
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City Area Code (44) 20
Local Phone Number 3829 6230
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Entity Central Index Key 0001730463
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Common Class A  
Cover [Abstract]  
Title of 12(b) Security Ordinary shares, nominal value $0.000042 per share*
Trading Symbol *
Security Exchange Name NASDAQ
Entity Listings [Line Items]  
Title of 12(b) Security Ordinary shares, nominal value $0.000042 per share*
Trading Symbol *
Security Exchange Name NASDAQ
8880 American Depositary Receipts  
Cover [Abstract]  
Title of 12(b) Security American Depositary Shares, each representing one ordinary share, nominal value $0.000042 per share
Trading Symbol AUTL
Security Exchange Name NASDAQ
Entity Listings [Line Items]  
Title of 12(b) Security American Depositary Shares, each representing one ordinary share, nominal value $0.000042 per share
Trading Symbol AUTL
Security Exchange Name NASDAQ

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