Aggressives B-Zell-Lymphom: Registerstudien bestätigen die Wirksamkeit von CAR-T-Zell-Therapien

2021 ◽  
pp. 1-2
Author(s):  
Ulf Schnetzke
Keyword(s):  
Follikuläres Lymphom ◽  
Phase 2 ◽  
Car T ◽  
Sind Eine

Seit 3 Jahren sind in Europa die beiden CAR-T-Zell-Produkte Tisagenlecleucel (Tisa-Cel) und Axicabtagene Ciloleucel (Axi-Cel) für das aggressive diffus-großzellige B-Zell-Lymphom (DLBCL) und das transformierte follikuläre Lymphom (trFL) beim Erwachsenen nach mindestens 2 vorangegangenen systemischen Therapie­linien zugelassen. Axi-Cel ist außerdem zugelassen für die Behand­lung des primären mediastinalen B-Zell-Lymphom [<xref ref-type="bibr" rid="ref1">1</xref>, <xref ref-type="bibr" rid="ref2">2</xref>]. Seit Dezember 2020 ist ein drittes CAR-T-Produkt, Brexucabtagen Autoleucel (Brexu-Cel) für die Behandlung des vorbehandelten Mantelzelllymphoms zugelassen worden [<xref ref-type="bibr" rid="ref3">3</xref>]. Alle 3 genannten Studien, welche zur Zulassung der entsprechenden Produkte geführt haben, waren Phase-2-Studien mit den bekannten Limitationen, wobei hier vor allem die geringe Patientenzahl zu nennen ist. Aus diesem Grund kommt Registerdaten aus den für diese Therapie spezialisierten Zentren eine besondere Bedeutung zu. Diese Analysen an einem großen Patientenkollektiv zeigen nicht nur das Therapieansprechen, sondern vor allem potenzielle Nebenwirkungen, auch im Langzeitverlauf, auf. Insbesondere das Zytokin-Freisetzungssyndrom (CRS) und die Neurotoxizität (ICANS) wurden im Vorfeld und während der Einführung der CAR-T-Zell-Produkte viel diskutiert [<xref ref-type="bibr" rid="ref4">4</xref>]. Sesques und Kollegen konnten 2020 eine erste große Analyse eines französischen Zentrums publizieren, für welche 61 Patienten untersucht wurden, die entweder Tisa-Cel oder Axi-Cel erhielten. Eine Bridging-Therapie bekamen nahezu alle Patienten (97%), wobei diese zu 98% eine Kombination aus Fludarabin und Cyclophosphamid war. Das mediane Alter der Patienten zum Zeitpunkt der CAR-T-Infusion lag bei 59 Jahren, der Großteil hatte ein DLBCL (62%) bzw. ein transformiertes follikuläres Lymphom (29%). Die meisten Patienten (70%) hatten bereits 4 oder mehr Vor­therapien vor der Leukapherese erhalten, wobei eine Hochdosis-Chemotherapie mit autologer Blutstammzelltransplantation bei 28% durchgeführt wurde. Zwischen den beiden Produkten, Tisa-Cel und Axi-Cel gab es keine signifikanten Unterschiede hinsichtlich der Patientencharak­teristika. Bezüglich der Ansprechraten ist vor allem der Monat 3 nach Therapie von Bedeutung, da inzwischen bekannt ist, dass ein komplettes Therapieansprechen (CR) zu diesem Zeitpunkt als sehr günstig zu bewerten ist. Es zeigte sich zum Monat 3 ein Gesamt­ansprechen (ORR) von 45% und eine CR-Rate von 39%. Bei einer kurzen medianen Nachbeobachtungszeit von 5,7 Monaten betrug das mediane progressionsfreie Überleben (PFS) 3 Monate und das mediane Gesamtüberleben (OS) 11,8 Monate. Das PFS nach 6 Monaten betrug 44%. Risikofaktoren, welche in der multivariaten Analyse mit einem schlechteren Therapieansprechen assoziiert waren, sind eine erhöhte Laktatdehydrogenase (LDH), die Anzahl an Vortherapien und ein erhöhtes C-reaktives Protein (CRP). Hinsichtlich der im Vorfeld viel diskutierten Nebenwirkungen trat ein CRS bei 85% der Patienten auf, Grad 3 oder höher bei 8%, ein ICANS bei 28%, Grad 3 oder höher bei 10%. An Langzeitnebenwirkung sind vordergründig die Zytopenien (Anämie, Thrombopenie und Neutropenie) zu nennen, welche auch 30 Tage nach Infusion und darüber hinaus von klinischer Relevanz sind. Keine Unterschiede bestanden in Wirksamkeit und Sicherheit zwischen den beiden Produkten.

scholarly journals 548 Phase 2 study of FLX475 in combination with ipilimumab in advanced melanoma

2021 ◽  
Vol 9 (Suppl 3) ◽  
pp. A578-A578
Author(s):  
Rakesh Goyal ◽  
Nicole Nasrah ◽  
Dan Johnson ◽  
William Ho
Keyword(s):  
Clinical Trial ◽  
T Cells ◽  
Antitumor Activity ◽  
Regulatory T Cells ◽  
Response Rate ◽  
Advanced Melanoma ◽  
Phase 2 ◽  
Car T Cells ◽  
Phase 2 Study ◽  
Car T

BackgroundRegulatory T cells (Treg) can dampen antitumor immune responses in the tumor microenvironment (TME) and have been shown to correlate with poor clinical outcome. Translational studies have demonstrated an accumulation of Treg in tumors after treatment with immunotherapies including CAR-T cells and anti-CTLA-4, which could potentially reflect a mechanism of adaptive immune resistance.1–2 CCR4, the receptor for the chemokines CCL17 and CCL22, is the predominant chemokine receptor on human Treg and is responsible for the migration and accumulation of Treg in the TME. Preclinical studies with orally available CCR4 antagonists have demonstrated potent inhibition of Treg migration into tumors, an increase in the intratumoral Teff/Treg ratio, and antitumor efficacy as a single agent and in combination with checkpoint inhibitors, including anti-CTLA-4.3 In a first-in-human trial conducted in healthy volunteers, the oral CCR4 antagonist FLX475 was demonstrated to be well tolerated with outstanding pharmacokinetic and pharmacodynamic properties.4 An ongoing Phase 1/2 clinical trial of FLX475 is examining the safety and preliminary antitumor activity of FLX475 as monotherapy and in combination with pembrolizumab in subjects with several types of advanced cancer.5 Given the preclinical data demonstrating a significant enhancement of the antitumor activity of anti-CTLA-4 when combined with FLX475, a Phase 2 study investigating the combination of FLX475 and ipilimumab is now being conducted in subjects with advanced melanoma.MethodsThis clinical trial is a Phase 2, multicenter, open-label, single-arm study to determine the antitumor activity of FLX475 in combination with ipilimumab in subjects with advanced melanoma previously treated with an anti-PD-1 or anti-PD-L1 agent. The primary objectives of the study are to evaluate objective response rate, and the safety and tolerability of this combination. The study will first examine the safety of the combination of the 100 mg PO QD recommended Phase 2 dose of FLX475 and the approved 3 mg/kg IV Q3W dose of ipilimumab as part of a safety run-in phase, prior to examining the degree of antitumor activity in approximately 20 subjects. Evidence of an overall response rate (ORR) notably greater than the expected ORR of ipilimumab monotherapy alone in such subjects, which has been shown to be approximately 14%,6 would provide preliminary clinical evidence in support of the clinical hypothesis that CCR4 blockade by FLX475 can significantly enhance the antitumor activity of an anti-CTLA-4 checkpoint inhibitor.Trial RegistrationClinicalTrials.gov Identifier: NCT04894994ReferencesO’Rourke D, Nasrallah M, Desai A, Melenhorst J, Mansfield K, Morrissette J, Martinez-Lage M, Brem S, Maloney E, Shen A, Isaacs R, Mohan S, Plesa G, Lacey S, Navenot J, Zheng Z, Levine B, Okada H, June C, Brogdon J, Maus M. A single dose of peripherally infused EGFRvIII-directed CAR T cells mediates antigen loss and induces adaptive resistance in patients with recurrent glioblastoma. Sci Transl Med 2017;9:eaaa0984. doi: 10.1126/scitranslmed.aaa0984.Sharma A, Subudhi S, Blando J, Vence L, Wargo J, Allison JP, Ribas A, Sharma P. Anti-CTLA-4 immunotherapy does not deplete FOXP3+ regulatory T cells (Tregs) in human cancers-Response. Clin Cancer Res 2019;25:1233–1238.Marshall L, Marubayashi S, Jorapur A, Jacobson S, Zibinsky M, Robles O, Hu D, Jackson J, Pookot D, Sanchez J, Brovarney M, Wadsworth A, Chian D, Wustrow D, Kassner P, Cutler G, Wong B, Brockstedt D, Talay O. Tumors establish resistance to immunotherapy by regulating Treg recruitment via CCR4. J Immunother Cancer 2020;8:e000764.van Marle S, van Hoogdalem E, Johnson D, Okal A, Kassner P, Wustrow D, Ho W, Smith S. Pharmacokinetics, pharmacodynamics, and safety of FLX475, an orally-available, potent, and selective small-molecule antagonist of CCR4, in healthy volunteers. J Immunother Cancer 2018; 6(Suppl 1):P484(SITC 2018).Powderly J, Chmielowski B, Brahmer J, Piha-Paul S, Bowyer S, LoRusso P, Catenacci D, Wu C, Barve M, Chisamore M, Nasrah N, Johnson D, Ho W. Phase I/II dose-escalation and expansion study of FLX475 alone and in combination with pembrolizumab in advanced cancer. Journal of Clinical Oncology 2020;38(15_suppl): TPS3163 (ASCO 2020).Long G, Mortier L, Schachter J, Middleton M, Neyns B, Sznol M, Zhou H, Ebbinghaus S, Ibrahim N, Arance A, Ribas A, Blank C and Robert C. Society for Melanoma Research 2016 Congress. Pigment Cell & Melanoma Research 2017;30:76–156.Ethics ApprovalThis study has been approved by the Institutional Review Board at each investigational site.

scholarly journals Phase 2 Study of the Response and Safety of P-Bcma-101 CAR-T Cells in Patients with Relapsed/Refractory (r/r) Multiple Myeloma (MM) (PRIME)

Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 3184-3184 ◽  
Author(s):  
Caitlin L. Costello ◽  
Tara K. Gregory ◽  
Syed Abbas Ali ◽  
Jesus G. Berdeja ◽  
Krina K. Patel ◽  
...  
Keyword(s):  
T Cells ◽  
T Cell ◽  
Board Of Directors ◽  
Research Funding ◽  
Phase 2 ◽  
Employment Equity ◽  
Advisory Committees ◽  
Car T Cells ◽  
Car T ◽  
Equity Ownership

P-BCMA-101 is a novel chimeric antigen receptor (CAR)-T cell product targeting B Cell Maturation Antigen (BCMA). P-BCMA-101 is produced using the piggyBac® (PB) DNA Modification System instead of the viral vector that is used with most CAR-T cells, requiring only plasmid DNA and mRNA. This makes it less costly and produces cells with a high percentage of the favorable T stem cell memory phenotype (TSCM). The higher cargo capacity of PB permits the incorporation of multiple genes in addition to CAR(s), including a safety switch allowing for rapid CAR-T cell elimination with a small molecule drug infusion in patients if desired, and a selection gene allowing for enrichment of CAR+ cells. Rather than using a traditional antibody-based binder, P-BCMA-101 has a Centyrin™ fused to a CD3ζ/4-1BB signaling domain. Centyrins are fully human proteins with high specificity and a large range of binding affinities, but are smaller, more stable and potentially less immunogenic than traditional scFv. Cumulatively, these features are predicted to result in a greater therapeutic index. A Phase 1, 3+3 dose escalation from 0.75 to 15 x 106 P-BCMA-101 CAR-T cells/kg (RP2D 6-15 x 106 cells/kg) was conducted in patients with r/r MM (Blood 2018 132:1012) demonstrating excellent efficacy and safety of P-BCMA-101, including notably low rates and grades of CRS and neurotoxicity (maximum Grade 2 without necessitating ICU admission, safety switch activation or other aggressive measures). These results supported FDA RMAT designation and initiation of a pivotal Phase 2 study. A Phase 2 pivotal portion of this study has recently been designed and initiated (PRIME; NCT03288493) in r/r MM patients who have received at least 3 prior lines of therapy. Their therapy must have contained a proteasome inhibitor, an IMiD, and CD38 targeted therapy with at least 2 of the prior lines in the form of triplet combinations. They must also have undergone ≥2 cycles of each line unless PD was the best response, refractory to the most recent line of therapy, and undergone autologous stem cell transplant or not be a candidate. Patients are required to be >=18 years old, have measurable disease by International Myeloma Working Group criteria (IMWG; Kumar 2016), adequate vital organ function and lack significant autoimmune, CNS and infectious diseases. No pre-specified level of BCMA expression is required, as this has not been demonstrated to correlate with clinical outcomes for P-BCMA-101 and other BCMA-targeted CAR-T products. Interestingly, unlike most CAR-T products patients may receive P-BCMA-101 after prior CAR-T cells or BCMA targeted agents, and may be multiply infused with P-BCMA-101. Patients are apheresed to harvest T cells, P-BCMA-101 is then manufactured and administered to patients as a single intravenous (IV) dose (6-15 x 106 P-BCMA-101 CAR-T cells/kg) after a standard 3-day cyclophosphamide (300 mg/m2/day) / fludarabine (30 mg/m2/day) conditioning regimen. One hundred patients are planned to be treated with P-BCMA-101. Uniquely, given the safety profile demonstrated during Phase 1, no hospital admission is required and patients may be administered P-BCMA-101 in an outpatient setting. The primary endpoints are safety and response rate by IMWG criteria. With a 100-subject sample, the Phase 2 part of the trial will have 90% power to detect a 15-percentage point improvement over a 30% response rate (based on that of the recently approved anti-CD38 antibody daratumumab), using an exact test for a binomial proportion with a 1-sided 0.05 significance level. Multiple biomarkers are being assessed including BCMA and cytokine levels, CAR-T cell kinetics, immunogenicity, T cell receptor diversity, CAR-T cell and patient gene expression (e.g. Nanostring) and others. Overall, the PRIME study is the first pivotal study of the unique P-BCMA-101 CAR-T product, and utilizes a number of novel design features. Studies are being initiated in combination with approved therapeutics and earlier lines of therapy with the intent of conducting Phase 3 trials. Funding by Poseida Therapeutics and the California Institute for Regenerative Medicine (CIRM). Disclosures Costello: Takeda: Honoraria, Research Funding; Janssen: Research Funding; Celgene: Consultancy, Honoraria, Research Funding. Gregory:Poseida: Research Funding; Celgene: Speakers Bureau; Takeda: Speakers Bureau; Amgen: Speakers Bureau. Ali:Celgene: Research Funding; Poseida: Research Funding. Berdeja:Amgen Inc, BioClinica, Celgene Corporation, CRISPR Therapeutics, Bristol-Myers Squibb Company, Janssen Biotech Inc, Karyopharm Therapeutics, Kite Pharma Inc, Prothena, Servier, Takeda Oncology: Consultancy; AbbVie Inc, Amgen Inc, Acetylon Pharmaceuticals Inc, Bluebird Bio, Bristol-Myers Squibb Company, Celgene Corporation, Constellation Pharma, Curis Inc, Genentech, Glenmark Pharmaceuticals, Janssen Biotech Inc, Kesios Therapeutics, Lilly, Novartis, Poseida: Research Funding; Poseida: Research Funding. Patel:Oncopeptides, Nektar, Precision Biosciences, BMS: Consultancy; Takeda, Celgene, Janssen: Consultancy, Research Funding; Poseida Therapeutics, Cellectis, Abbvie: Research Funding. Shah:University of California, San Francisco: Employment; Genentech, Seattle Genetics, Oncopeptides, Karoypharm, Surface Oncology, Precision biosciences GSK, Nektar, Amgen, Indapta Therapeutics, Sanofi: Membership on an entity's Board of Directors or advisory committees; Indapta Therapeutics: Equity Ownership; Celgene, Janssen, Bluebird Bio, Sutro Biopharma: Research Funding; Poseida: Research Funding; Bristol-Myers Squibb: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees; Amgen: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees; Nkarta: Consultancy, Membership on an entity's Board of Directors or advisory committees; Kite: Consultancy, Membership on an entity's Board of Directors or advisory committees; Teneobio: Consultancy, Membership on an entity's Board of Directors or advisory committees. Ostertag:Poseida Therapeutics, Inc.: Employment, Equity Ownership. Martin:Poseida Therapeutics, Inc.: Employment, Equity Ownership. Ghoddusi:Poseida Therapeutics, Inc.: Employment, Equity Ownership. Shedlock:Poseida Therapeutics, Inc.: Employment, Equity Ownership. Spear:Poseida Therapeutics, Inc.: Employment, Equity Ownership. Orlowski:Poseida Therapeutics, Inc.: Research Funding. Cohen:Poseida Therapeutics, Inc.: Research Funding.

Outcomes of patients (pts) ≥ 65 years of age in ZUMA-1, a pivotal phase 1/2 study of axicabtagene ciloleucel (axi-cel) in refractory large B-cell lymphoma (LBCL).

2019 ◽  
Vol 37 (15_suppl) ◽  
pp. 7555-7555
Author(s):  
Sattva Swarup Neelapu ◽  
Caron A. Jacobson ◽  
Olalekan O. Oluwole ◽  
Javier Munoz ◽  
Abhinav Deol ◽  
...  
Keyword(s):  
T Cell ◽  
Phase 1 ◽  
Objective Response ◽  
B Cell Lymphoma ◽  
Phase 2 ◽  
T Cell Therapy ◽  
Car T Cell ◽  
Car T ◽  
Grade 3

7555 Background: Axi-cel is a US FDA-approved, autologous anti-CD19 chimeric antigen receptor (CAR) T cell therapy for the treatment of pts with relapsed or refractory LBCL with ≥ 2 prior systemic therapies. In the 2-y follow-up of ZUMA-1, the objective response rate (ORR) was 83% with a complete response (CR) rate of 58%, and 39% of pts were in ongoing response (Locke et al. Lancet Oncol. 2019). Here we report efficacy and safety outcomes by age. Methods: Eligible pts with refractory LBCL underwent leukapheresis and conditioning chemotherapy followed by a target dose of 2 × 106 anti-CD19 CAR T cells/kg. The Phase 2 primary endpoint was investigator-assessed ORR. Additional key endpoints were adverse events (AEs), overall survival (OS), and levels of CAR gene-marked cells in peripheral blood. Efficacy was evaluated for Phase 2 pts; safety was evaluated for all treated pts (Phases 1 and 2). Pts were analyzed by ≥ 65 y vs < 65 y of age. Results: As of 8/11/2018, 108 pts were treated. Pts ≥ 65 y (n = 27) vs < 65 y (n = 81) had a median age of 69 y vs 55 y, respectively, were 81% vs 63% male, 70% vs 36% had an IPI score 3-4, 59% vs 57% had ECOG 1, 67% vs 72% had ≥ 3 prior therapies, and median tumor burdens were 3790 mm2 vs 3574 mm2. Median follow-up was 27.1 mo for Phase 2 pts (n = 101). The ORR for pts ≥ 65 y (n = 24) and < 65 y (n = 77) was 92% and 81% (CR rate 75% and 53%), respectively, with ongoing responses in 42% and 38% of pts (ongoing CR 42% and 35%). The 24-mo OS rate was 54% for pts ≥ 65 y and 49% for pts < 65 y. Most pts experienced Grade ≥ 3 AEs (100% of pts ≥ 65 y; 98% of pts < 65 y), and 4% of each group (1/27 pts ≥ 65 y and 3/81 pts < 65 y) died due to AEs as previously reported. Grade ≥ 3 neurologic events and cytokine release syndrome occurred in 44% vs 28% and 7% vs 12% of pts ≥ 65 y vs < 65 y, respectively. CAR T cell expansion by peak level (43 vs 35 cells/μl) or area under the curve (562 vs 448 d × cells/μl) was similar in pts ≥ 65 y vs < 65 y, respectively. Conclusions: The 2-y follow-up of ZUMA-1 demonstrates that axi-cel can induce high rates of durable responses with a manageable safety profile for pts ≥ and < 65 y. Axi-cel offers substantial clinical benefit for older pts with refractory LBCL who otherwise have limited treatment options. Clinical trial information: NCT02348216.

Results of the phase 2 MARCH Study: Oral ATG-010 (Selinexor) plus low dose dexamethasone in Chinese patients with relapsed/refractory multiple myeloma (RRMM) previously treated with an immunomodulatory agent (IMiD) and a proteasome inhibitor (PI).

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. e20002-e20002
Author(s):  
Weijun Fu ◽  
Zhongjun Xia ◽  
Chengcheng Fu ◽  
Wenming Chen ◽  
Gang An ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
Nuclear Export ◽  
Therapeutic Option ◽  
Chinese Patients ◽  
Baseline Risk ◽  
Phase 2 ◽  
Car T ◽  
Previously Treated ◽  
Line Of Therapy ◽  
Common Teaes

e20002 Background: ATG-010 is a novel, oral selective inhibitor of nuclear export inhibiting exportin 1. In preclinical and clinical studies, ATG-010 has demonstrated activity against multiple myeloma (MM). ATG-010 (80 mg biweekly) plus dexamethasone (20 mg biweekly) (Sd) was approved by US FDA for treatment of patients (pts) with penta-refractory MM in 2019 based on the STORM study. MARCH is a single arm, Phase 2 study to assess efficacy and safety of Sd in Chinese pts with RRMM. Methods: Enrolled pts have been previously treated with and refractory to PI, IMiD, and the last line of therapy. Sd is administered in 4-week cycles. Primary endpoint is overall response rate (ORR) per independent review committee. The total planned enrollment of 82 pts provides ̃80% power to test against H0 of 15% ORR at one-sided α of 0.025. This abstract provides data from a planned analysis of the first 60 treated pts. Results: As of 13 Oct 2020, 18 (30%) of the 60 pts were on treatment. Median follow-up was 9.5 months (mo) (range: 1.9-12.8). Median age was 61 years (range 43-82; 42% > 65). Pts had received a median of 5 (range 1-16) prior MM regimens, with following baseline risk factors: 72% R-ISS II/III, 70% cytogenetic abnormalities, 22% del (17p13),20% renal impairment, 15% prior CAR-T therapy, and 25% pre-treated with daratumumab (considered ‘triple-class exposed’). ORR was 26.7% (95% CI: 16.1, 39.7). Median DOR was 4.6 mo (95% CI: 1.42, NE). Median PFS was 3.7 mo (95% CI: 1.92, 4.66). Median OS was not reached; 9-mo OS rate was 68.5%. ORR was 33.3% in triple-class-exposed pts, and 44.4% in pts with prior CAR-T. ORR was generally consistent across subgroups. Common TEAEs of any grade included: thrombocytopenia (87%), nausea (87%), leukopenia (85%), anemia (85%), lymphopenia (78%), neutropenia (73%), weight loss (72%), hyponatremia (65%), decreased appetite (63%), asthenia (62%)/fatigue (17%), hyperglycemia (53%), vomiting (52%), hypocalcemia (38%), hypokalemia (30%), diarrhea (30%), pneumonia (27%). Common TEAEs of Grade ≥ 3 included: anemia (60%), thrombocytopenia (55%), leukopenia (42%), lymphopenia (42%), neutropenia (38%), hyponatremia (28%), and pneumonia (23%). Thirty pts (50%) had TESAEs, including (> 3%): thrombocytopenia (15%), pneumonia (15%), anemia (6.7%), hyponatremia (3.3%). Eight pts (13.3%) had TEAEs leading to treatment discontinuation, including (> 2%): thrombocytopenia (5%) and pneumonia (3%). Three fatal TEAEs were pneumonia, intracranial hemorrhage and sudden death (1 each). Conclusions: In Chinese RRMM pts refractory to both IMiD and PI, with a highly unmet medical need, MARCH confirms the efficacy of Sd as a promising new oral therapeutic option with a manageable safety profile, which is consistent with STORM. Clinical trial information: NCT03944057.

scholarly journals ZUMA-11: A Phase 1/2 Multicenter Study of Axicabtagene Ciloleucel (Axi-Cel) + Utomilumab Patients with Refractory Large B Cell Lymphoma

Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 4084-4084 ◽  
Author(s):  
Ran Reshef ◽  
David B. Miklos ◽  
John M. Timmerman ◽  
Caron A. Jacobson ◽  
Nabila N. Bennani ◽  
...  
Keyword(s):  
T Cells ◽  
T Cell ◽  
B Cell ◽  
Research Funding ◽  
Cell Lymphoma ◽  
Phase 1 ◽  
B Cell Lymphoma ◽  
Phase 2 ◽  
Car T Cells ◽  
Car T

Background: Relapsed/refractory (R/R) large B cell lymphoma (LBCL) is associated with poor outcomes to standard salvage therapy (Crump M, et al. Blood. 2017). In SCHOLAR-1, a large multicenter, patient-level, retrospective study, patients with R/R diffuse LBCL had a 26% objective response rate (ORR) to the next line of therapy, a 7% complete response (CR) rate, and a median overall survival of 6.3 months (Crump M, et al. Blood 2017). Axicabtagene ciloleucel (axi-cel) is an autologous anti-CD19 chimeric antigen receptor (CAR) T cell therapy approved for patients with R/R LBCL with ≥ 2 prior systemic therapies. With a median follow-up of 27.1 months in ZUMA-1, the ORR with axi-cel was 83% (58% CR rate) in patients with refractory LBCL (Locke FL, et al. Lancet Oncol. 2019). Activation of the costimulatory receptor 4-1BB (CD137) on CAR T cells may enhance axi-cel antitumor activity by enhancing T cell proliferation, function, and survival. Utomilumab (uto), an investigational monoclonal antibody agonist of the 4-1BB pathway, enhanced T cell function and survival in preclinical studies (Fisher TS, et al. Cancer Immunol Immunother. 2012) and had favorable single-agent safety in patients (Segal NH, et al. Clin Cancer Res. 2018). Possible mechanisms of resistance to axi-cel are thought to be suboptimal CAR T cell expansion an exclusionary tumor microenvironment and CD19 target antigen loss (Neelapu SS, et al. Blood 2017, Rossi JM, et al J Immunother Cancer. 2018). Combination strategies that increase proliferation, expansion, and persistence of CAR T cells or prevent activation-induced cell death of CAR T cells may improve clinical outcomes observed with axi-cel. ZUMA-11 is a Phase 1/2 study investigating the efficacy and safety of axi-cel + uto in patients with refractory LBCL. Methods: The primary objectives of this study are to determine the safety, recommended Phase 2 dosing and timing (Phase 1), and efficacy (Phase 2) of axi-cel + uto in adult patients with refractory LBCL. Patients with progressive or stable disease as the best response to second-line chemotherapy or relapse ≤ 12 months after autologous stem cell transplantation, a prior anti-CD20 antibody and anthracycline-containing regimen, and Eastern Cooperative Oncology Group performance status 0-1 are eligible. Patients with histologically proven primary mediastinal B cell lymphoma, history of Richter's transformation or chronic lymphocytic lymphoma, prior CAR T cell therapy, or central nervous system involvement of lymphoma are ineligible. In Phase 1, ≈24 patients in ≤ 3 cohorts will receive a single dose of axi-cel and escalating doses of uto (10, 30, or 100 mg) using a 3 + 3 design in up to 4 of 6 cohorts. The recommended uto dose will be based on dose-limiting toxicities and other factors. Patients will be leukapheresed and may receive optional, nonchemotherapy bridging therapy per investigator decision. After conditioning chemotherapy, patients will receive a single infusion of axi-cel (target dose, 2 × 106 CAR T cells/kg) on Day 0 followed by uto on Day 1 and every 4 weeks for 6 months or until progressive disease. Patients will be treated one at a time during Phase 1, and patients treated with axi-cel will be staggered by ≥ 2 weeks. Day 21 uto administration will be explored if toxicity is unacceptable with Day 1 administration. The primary endpoints are incidence of dose-limiting toxicities in Phase 1 and CR rate in Phase 2. Secondary endpoints include ORR, duration of response, progression-free survival, overall survival, safety, and levels of CAR T cells and cytokines in blood. This study uses a single-arm design to estimate the true CR rate; with a sample size of 27 patients, of which ≤ 3 patients will have been treated in the Phase 1 portion, the maximum half-width of the 95% confidence interval about response will be ≥ 21%. ZUMA-11 is open and accruing patients. Disclosures Reshef: Kite, a Gilead Company: Consultancy, Honoraria, Research Funding; Celgene: Research Funding; Incyte: Consultancy, Research Funding; Shire: Research Funding; BMS: Consultancy; Atara: Consultancy, Research Funding; Magenta: Consultancy; Pfizer: Consultancy; Pharmacyclics: Consultancy, Research Funding. Miklos:Pharmacyclics: Consultancy, Patents & Royalties, Research Funding; Precision Bioscience: Consultancy; Adaptive Biotechnologies: Consultancy, Research Funding; Miltenyi: Consultancy, Research Funding; Becton Dickinson: Consultancy; Janssen: Consultancy; AlloGene: Consultancy; Novartis: Consultancy; Kite, A Gilead Company: Consultancy, Research Funding; Celgene-Juno: Consultancy. Timmerman:Spectrum Pharmaceuticals: Research Funding; Kite, A Gilead Company: Consultancy, Honoraria, Other: travel support, Research Funding; ImmunGene: Research Funding; Merck: Research Funding; Bristol-Myers Squibb: Consultancy, Honoraria, Other: travel support, Research Funding. Jacobson:Novartis: Consultancy, Honoraria, Other: travel support; Bayer: Consultancy, Other: travel support; Precision Biosciences: Consultancy, Other: travel support; Humanigen: Consultancy, Other: travel support; Celgene: Consultancy, Other: travel support; Pfizer: Research Funding; Kite, a Gilead Company: Consultancy, Honoraria, Other: travel support. Bennani:Kite, A Gilead Company: Consultancy, Research Funding. Rossi:Kite, A Gilead Company: Employment. Sherman:Kite, A Gilead Company: Employment. Sun:Kite, A Gilead Company: Employment. Palluconi:Kite, A Gilead Company: Employment. Kim:Kite, A Gilead Company: Employment. Jain:Kite/Gilead: Consultancy.

Phase 2 results of the ZUMA-3 study evaluating KTE-X19, an anti-CD19 chimeric antigen receptor (CAR) T-cell therapy, in adult patients (pts) with relapsed/refractory B-cell acute lymphoblastic leukemia (R/R B-ALL).

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 7002-7002
Author(s):  
Bijal D. Shah ◽  
Armin Ghobadi ◽  
Olalekan O. Oluwole ◽  
Aaron Logan ◽  
Nicolas Boissel ◽  
...  
Keyword(s):  
T Cell ◽  
Phase 1 ◽  
Phase 2 ◽  
T Cell Therapy ◽  
Car T Cells ◽  
Car T Cell ◽  
Car T Cell Therapy ◽  
Car T ◽  
Grade 3

7002 Background: ZUMA-3 is a Phase 1/2 multicenter study evaluating KTE-X19, an autologous anti-CD19 CAR T-cell therapy, in adult pts with R/R B-ALL. Phase 1 efficacy results at the recommended Phase 2 dose (1×106 CAR T cells/kg) were encouraging (Shah et al. ASCO 2019 #7006). Here, we present the pivotal Phase 2 results. Methods: Eligible adults had R/R B-ALL, > 5% bone marrow (BM) blasts by local evaluation, and ECOG 0–1. Pts received a single infusion of KTE-X19 after conditioning chemotherapy. The primary endpoint was the overall complete remission (CR) rate (CR + CR with incomplete hematologic recovery [CRi]) by central review. Key secondary endpoints were duration of remission (DOR), relapse-free survival (RFS), overall survival (OS), measurable residual disease negativity (MRD–) rate by flow cytometry, and safety. Data are reported in all treated pts. Results: As of 9/2020, 55 of 71 enrolled pts received KTE-X19, with a median follow-up of 16.4 mo (range, 10.3–22.1). Adverse events (AEs; n = 8) and ineligibility (n = 4) were the most common reasons enrolled pts did not receive KTE-X19 infusion. Median age was 40 y (range, 19–84), median BM blasts at screening were 65% (range, 5–100), and 47% of pts had ≥3 prior therapies, with 45%, 22%, and 42% having previously received blinatumomab, inotuzumab ozogamicin, or allogeneic stem cell transplant (alloSCT), respectively. The CR/CRi rate was 71% (95% CI, 57–82; 56% CR, 15% CRi); 31% of responders had ongoing responses. Median (95% CI) DOR, RFS, and OS were 12.8 mo (8.7–not estimable [NE]), 11.6 mo (2.7–15.5), and 18.2 mo (15.9–NE), respectively. In responders, median (95% CI) RFS and OS were 14.2 mo (11.6–NE) and not reached (16.2–NE). The MRD– rate was 97% among pts with CR/CRi. Among 25 pts with prior blinatumomab treatment, the CR/CRi rate was 60%. Ten pts (18%) received subsequent alloSCT at a median 98 days post–KTE-X19 infusion. Median DOR remained unchanged when not censoring for alloSCT. Grade ≥3 AEs occurred in 95% of pts, most commonly anemia (49%) and neutropenia (49% [febrile 13%]). Grade ≥3 cytokine release syndrome (CRS; per Lee at al. Blood 2014) and neurologic events occurred in 24% and 25% of pts, respectively, and were generally reversible. Two Grade 5 KTE-X19–related events occurred (brain herniation, n = 1; septic shock, n = 1). Median times to onset of CRS and neurologic events were 5 d and 9 d, with median durations of 7.5 d and 7 d, respectively. Median peak CAR T-cell levels (cells/µL) were 40.5 (range, 1.3–1533.4) in pts with CR and 0 in nonresponders. CAR T cells were undetectable by 9 mo in ongoing responders. Conclusions: After a median follow-up of 16.4 mo, KTE-X19 demonstrated compelling clinical benefit in heavily pretreated adults with R/R B-ALL, with the median OS not yet reached for responding pts and a manageable safety profile. Clinical trial information: NCT02614066.

Infections Associated with CAR T Therapy for Treatment of Hematological Malignancies

Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 4442-4442 ◽  
Author(s):  
Tariq Iqtidar Sadiq Syed ◽  
Syed Maaz Abdullah ◽  
Tayyab Rehan ◽  
Muhaddis Ejaz Ahmad ◽  
Syeda Sabeeka Batool ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
B Cell ◽  
Hematological Malignancies ◽  
Phase 1 ◽  
Infectious Complications ◽  
Phase 2 ◽  
Phase 1 Trial ◽  
Phase 2 Trial ◽  
Car T ◽  
Tract Infections

Introduction: Chimeric antigen receptor t cells (CAR T) therapy is an innovative adoptive immunotherapy being used for the treatment of CD19+ive B cell hematological malignancies, especially B cell acute lymphoblastic leukemia (B-ALL), non-Hodgkin's lymphomas (NHL) and chronic lymphocytic Leukemia (CLL). This treatment holds the potential to be highly effective and potentially less toxic alternative to cytotoxic chemotherapy for patients with relapsed and refractory (R/R) disease.This therapeutic modality is associated with a variety of side effects which includes cytokine release syndrome (CRS), neurotoxicity, B cell aplasia, hypogammaglobulinemia and resultant high risk infections. There is paucity of data about infection related complications with CAR-T therapy. In this review, we focus on the infections associated with B cell targeting CART cell therapy for the treatment of hematological malignancies. Methods: We conducted a systematic review (following PRISMA guidelines) by completing a comprehensive PubMed, Cochrane Library and ClinicalTrials.gov search on May 15th2019. Our search strategy included using search and MeSH terms related to CAR T therapy, hematological malignancies, Infections, safety and mortality. We were able to identify 279 articles from PubMed, 26 from Cochrane, 5 from Clinical Trials.org and 7 from Web of Science. After screening we selected 13 prospective published trials (n=555) for data extraction. We manually extracted data and summarized our results. RESULTS: Total included trials were 13, and trial level data from 555 patient was summarized in Table 1. Commonly used targets were CD19 ( B cell malignancies), and BCMA (Multiple Myeloma). CAR T were used for the treatment of diseases B-cell acute lymphoblastic leukemia ( ALL), B cell NHL, CLL, and Multiple myeloma (MM). Out of the available data, the two most frequent infections were upper respiratory tract infections (RTI) and blood stream infections. Other infections observed were the lower RTI, urinary tract infections (UTI), clostridium difficile (C. Diff), meningitis, mucocutaneous herpes infections, cellulitis, mucormycosis, and aspergillosis. A Phase 1/2 trial (NCT00924326 / B-NHL / CD19 Target) demonstrated 43 cases of septicemia (23.2%), 4 cases of UTI (9.3%) and 1 case each of cellulitis (2.3%), opportunistic infections (2.3%), upper RTI and lower RTI (2.3%). Phase 1 trial (NCT01029366 / B lymphoma, leukemia / CD19 target / n=20) showed 3 cases (15%) of pneumonia, 1 case each of C Diff, Pseudomonas and salmonella (5%) infections. A Phase 2 trial (NCT02030834, B NHL, CD19 target, n=63) treated patients showed 34% patients experienced infection which included sepsis, UTI, upper and lower RTI, skin, small intestine and mucosal infections. A phase 1 trial ( NCT01840566, n=17, NHL, CD19 target) demonstrated cases of mucormycosis ( n=unknown) and 7 case of pneumonia (41.1%). In phase 2 trial (NCT02030847, B ALL, CD19, n=30) treated patients experienced cases of sepsis (10%), Pneumonia (6.7%) and 1 case each of oral Candidiasis, C Diff, influenza and meningitis (10%). A phase 1 trial (NCT01044069, n=53, RR ALL, CD19 target) showed incidence of 11 cases of blood stream infections (20.1%), 9 cases of upper RTI (16.9), 2 cases of UTI (3.8%), 2 cases of pneumonia (3.8%), 3 cases of pulmonary aspergillosis (5.7%) and a case of herpes infection (1.9). Phase 2 trial (NCT01747486, CLL, CD19, n=42) demonstrated 2 cases of sepsis (4.7%), 2 cases of influenza (4.7), 3 cases of upper respiratory tract infections (7.1%) and 2 cases of pneumonia (4.7%). NCT02215967, Phase 1 trial ( Multiple Myeloma, BCMA target, n=12) was associated with 3 cases of upper RTI (25%) and 1 case of UTI (8.3%). Table 2 summarizes additional ongoing CAR T cell trials. Conclusion: CAR T cell therapy is gaining popularity and its indications are expanding. Its complications need to be closely studied for potential infections amongst other side effects. Clinical trial results have likely under-reported infections associated with CAR-T therapy because of overlapping presentation with cytokine release syndrome (CRS), neurotoxicity and limited follow-up reported in the published trials. Additional studies with longer follow up duration are required to identify the true risk of infectious complications of CAR T therapy in patients with hematological malignancies. Real word data on CAr T patients can also reveal long term infectious complications. Disclosures Anwer: In-Cyte: Speakers Bureau; Seattle Genetics: Membership on an entity's Board of Directors or advisory committees. OffLabel Disclosure: CAR-T therapy. We are summarizing infectious complications of CAR-T therapy and their projects under development.

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