scholarly journals Autologous Prostate Stem Cell Antigen-specific CAR T Cells BPX-601

2020 ◽  
Author(s):  
2021 ◽  
Vol 20 (2) ◽  
pp. 143-147
Author(s):  
O. O. Molostova ◽  
L. N. Shelikhova ◽  
D. E. Pershin ◽  
A. M. Popov ◽  
M. E. Dubrovina ◽  
...  

Presently, there is no consensus on the best treatment for relapsed B-cell acute lymphoblastic leukemia/lymphoma after allogeneic hematopoietic stem cell transplantation (allo-HSCT), particularly in patients with extramedullary lesions. There are certain anti-tumor drugs that can be used in case of relapse after allo-HSCT, however, prospective randomized studies directly comparing different chemotherapy and immunotherapy approaches are generally lacking. Retrospective studies exploring therapy for relapsed disease are difficult to compare due to the inhomogeneity of patient populations and the diversity of treatment approaches. In such situations, the treatment choice is influenced by the characteristics of the tumor population, particularly, its immunophenotype, available drugs, and the experience of a healthcare facility and physicians. This clinical case report describes the process of treating a patient with B-lymphoblastic lymphoma and shows the possibility of using donor CD19-specific CAR-T cells as a treatment for isolated CNS relapse after allo-HSCT. The patient's parents gave their consent to the use of their child's data, including photographs, for research purposes and in publications.


Blood ◽  
2015 ◽  
Vol 126 (23) ◽  
pp. SCI-22-SCI-22 ◽  
Author(s):  
Dirk Hans Busch

Abstract Adoptive transfer of primary (unmodified) or genetically engineered antigen-specific T cells has demonstrated astonishing clinical results in the treatment of infections and some malignancies. The definition of optimal targets and antigen receptors as well as the differentiation status of transferred T cells are emerging as crucial parameters for generating cell products with predictable efficacy and safety profiles. Our laboratory has demonstrated that defined subsets within the memory CD8+ T cell compartment fulfill all key characteristics of adult tissue stem cells and are essential for robust and long-term maintained responses upon adoptive transfer. We have developed clinical multi-parameter enrichment technologies to purify these memory stem cells for clinical applications. In my presentation I will report on the status of ongoing clinical trials using such purified cell products either as a primary T cell population for the treatment of infections upon allogeneic stem cell transplantation or after genetic modification with a CD19 CAR for the treatment of malignancies (collaboration with Stan Riddell, FHCC/Seattle). Infusing small numbers of T cells within a memory stem cell product can be highly effective therapeutically, but bears some risk of toxicity. Therefore, safeguards that allow selective depletion of transferred cells in the case of un-tolerable side effects may be needed to further improve adoptive immunotherapy. I will present results exploring the capacity of a truncated version of EGFR (EGFRt) co-expressed with T cells expressing a CD19-CAR. In pre-clinical mouse models we demonstrate that application of Cetuximab, which binds to EGFRt, confers selective depletion of adoptively transferred CAR-T cells in vivo. Long-term B cell aplasia, which is a main side effect of CD19-CAR T cell therapy, can be completely reverted with this strategy. Vaccination studies upon B cell recovery demonstrate full functionality of antigen-specific antibody formation. EGFRt co-expressing CD19-CAR T cells have been successfully transferred into first human patients, providing the option to test for the first time in a clinical setting whether treatment of B cell aplasia after long-term leukemia remission can be achieved by selective depletion. Disclosures Busch: STAGE cell therapeutics: Other: I was share holder of STAGE cell therapeutics, a company that was recently bought by Juno therapeutics.. Off Label Use: CD19 CAR T cells.


JCI Insight ◽  
2019 ◽  
Vol 4 (4) ◽  
Author(s):  
Alfred L. Garfall ◽  
Edward A. Stadtmauer ◽  
Wei-Ting Hwang ◽  
Simon F. Lacey ◽  
Jan Joseph Melenhorst ◽  
...  

Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 2371-2371
Author(s):  
Sarah Nikiforow ◽  
Sarah Winawer-Wetzel ◽  
Sheila Phicil ◽  
Kurt Lowery ◽  
Brett Glotzbecker ◽  
...  

Abstract Introduction: Non-stem cell therapies including cellular vaccines and chimeric antigen receptor (CAR) T cells are experiencing explosive growth in research development and clinical applications. Demand is growing, with several CAR products heading for imminent FDA approval. The variety of products poses a challenge to even experienced cancer centers. Our goal was to create clinical and operational infrastructure to deliver these therapies efficiently and safely. We leveraged existing workflows and care models spanning inpatient and outpatient settings and disease groups previously unfamiliar with cell therapies. Methods: We conducted over 30 internal stakeholder interviews across research, cell processing, nursing, physician, pharmacy, and operational areas and queried experts at other cell-engineering sites. Key areas identified were 1) cell distribution, 2) trial initiation, 3) communication, training, and clinical care, 4) resource utilization, and 5) safety and outcome monitoring. A steering committee formulated guiding principles: make safety paramount, systematically coordinate care, recognize each cell therapy and sponsor's unique requirements, and minimize unnecessary infrastructure. Aspects of the care spectrum evaluated spanned from patient identification, financial clearance, outpatient workup, cell collection, admission/administration, to post-infusion follow-up. Results: 1) Cell distribution: despite product manufacturing at central contracted sites, novel internal workflows were required to ensure chain of identity through multiple hand-offs. A standard questionnaire was devised to determine unique trial hurdles and a consistent approach to labeling, shipping and communication with sponsors and clinicians. Biweekly meetings between apheresis, cell processing, nursing, and pharmacy staff to discuss logistics and impediments were established. (Figure) 2) Trial initiation: A "start up kit" was developed to explain key entities and workflows (e.g. apheresis, pharmacy for tocilizumab, biosafety review) to help investigators unfamiliar with cell therapies navigate submission. 3) Communication, training and clinical care: guidance in budget design, tools to flag high-risk patients in electronic medical records (EMR), and education on nomenclature were developed. Over 20 general education sessions were conducted across clinical and operational areas, in addition to trial-specific training, for financial coordinators, patient safety groups, MDs, residents, PAs and nurses in all disease areas both inpatient and outpatient, even statisticians. We created email distribution lists, EMR flags, a case management system, and toxicity management order sets to ensure awareness of admissions, availability of crucial medications, recognition of cytokine release or neurotoxicity requiring unique intervention, and priming of ICU resources. A weekly forum for MDs and clinical stakeholders to share clinical events and needs was instituted. 4) Resource utilization: shortfalls were identified in cell-collection capacity and scheduling, product distribution, and clinical expertise. Dedicated clinician positions were created, and scheduling was consolidated to optimize capacity within and outside existing BMT infrastructure. 5) Safety and outcome monitoring: a format and forum was developed for quarterly review of major outcomes allowing institutional oversight over the spectrum of investigational cell therapies and standard of care administrations. Discussion: With the explosion in outpatient cancer vaccines and CAR T cells, the need for additional physical resources, new medications, experienced clinicians, and communication tools became evident. We describe our approach to creating novel workflows to ensure patients receive the latest cell therapies safely, timely distribution of cells, educated ED and ICU involvement, and rapid expert management including anti-cytokine therapy. The investment of individual centers to bring cellular therapies safely into clinical care should not be under-appreciated, particularly given the high-risk nature of these treatments and the unique processes and high-coordinated activities these new modalities require. Regulatory agencies, such as FACT, are likewise requesting that such safety measures, standard procedures and oversight be addressed. Figure Figure. Disclosures Soiffer: Kiadis: Membership on an entity's Board of Directors or advisory committees; Juno: Consultancy.


Cancers ◽  
2021 ◽  
Vol 13 (18) ◽  
pp. 4664
Author(s):  
Ariadna Bartoló-Ibars ◽  
Mireia Uribe-Herranz ◽  
Guillermo Muñoz-Sánchez ◽  
Cristina Arnaldos-Pérez ◽  
Valentín Ortiz-Maldonado ◽  
...  

Allogenic hematopoietic stem cell transplantation (allo-HSCT) is one of the standard treatments for B-cell lymphoproliferative disorders; however, deep relapses are common after an allo-HSCT, and it is associated with poor prognosis. A successful approach to overcome these relapses is to exploit the body’s own immune system with chimeric antigen receptor (CAR) T-cells. These two approaches are potentially combinatorial for treating R/R B-cell lymphoproliferative disorders. Several clinical trials have described different scenarios in which allo-HSCT and CAR-T are successively combined. Further, for all transplanted patients, assessment of chimerism is important to evaluate the engraftment success. Nonetheless, for those patients who previously received an allo-HSCT there is no monitorization of chimerism before manufacturing CAR T-cells. In this review, we focus on allo-HSCT and CAR-T treatments and the different sources of T-cells for manufacturing CAR T-cells.


2019 ◽  
Vol 80 (3) ◽  
pp. 471-483 ◽  
Author(s):  
Taisuke Kondo ◽  
Makoto Ando ◽  
Nao Nagai ◽  
Wataru Tomisato ◽  
Tanakorn Srirat ◽  
...  

2002 ◽  
Vol 102 (4) ◽  
pp. 390-397 ◽  
Author(s):  
Andrea Kiessling ◽  
Marc Schmitz ◽  
Stefan Stevanovic ◽  
Bernd Weigle ◽  
Kristina Hölig ◽  
...  

Blood ◽  
2017 ◽  
Vol 129 (17) ◽  
pp. 2395-2407 ◽  
Author(s):  
Sarah K. Tasian ◽  
Saad S. Kenderian ◽  
Feng Shen ◽  
Marco Ruella ◽  
Olga Shestova ◽  
...  

Key Points Depletion of CD123-redirected CAR T cells with monoclonal antibodies preserves leukemia remission in human AML xenograft models. AML CAR T-cell depletion enhances feasibility of subsequent allogeneic stem cell transplantation.


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