"Don't Eat me" Signal in Hematological Malignancies: CD24 as New Target to Improve Anti-cancer Immunity....
Mantle-cell LymphomaB Cell Chronic Lymphocytic LeukemiaMantle-cell Lymphoma (MCL) is a B-cell non-Hodgkin's lymphoma (NHL) with heterogeneous behavior,ranging from indolent phenotype to highly aggressive and drug resistant cases with dismal prognosis.Disease progression and drug resistance may be generated by Tumor Microenvironment (TME),owing that M2-like immunosuppressive tumor associated macrophages (TAM) are pathologically functional in providing survival signals to MCL cells-and TME is known to help mask tumoral cells from host immune system.Similarly, Chronic Lymphocytic Leukemia (CLL) is a B-cell malignancy characterized by increased circulating number of mature B lymphocytes that eventually reside into bone marrow and lymphoid tissues as well.Higher number of circulating abnormal B cells is secondary to a balance between increased proliferation and decreased apoptosis activities,sustained by signals also deriving from TME.As a matter of fact,TME harbors different cell compounds and monocyte-derived Nurse-like cells (NLCs) resemble the M2-like macrophage immunosuppressive profile and turned out to be an important component able to interact with CLL cells, providing improvement of proliferation and survival.Recently, cancer-expressed CD47 was found to be involved in tumor immune escape through interaction with Signal Regulatory Protein-α (SIRP-α) expressed by TAM,being able to quench phagocytosis. Interestingly,"Don't Eat Me" signal (DEMs) blockade with anti-CD47 monoclonal Antibody (mAb) showed promising activity in pretreated NHL,through increase of phagocytosis by TAM.CD24 was also demonstrated to be involved in DEMs in solid cancer.As a matter of fact, tumor-expressed CD24 promotes immune evasion through its interaction with the inhibitory receptor sialic-acid-binding Ig-like lectin10 (Siglec-10),expressed by TAM with immunosuppressive phenotype (M2-like).In a preclinical model of CD24+ solid tumors (ovarian and breast cancer) the blockade of CD24-Siglec-10 interaction with anti-CD24 mAb showed improvement of TAM-associated phagocytosis in vitro and TAM-dependent reduction of tumor growth and increase of survival in vivo.It is worth mentioning that CD24 can be expressed in some phases of B-cell differentiation and both MCL and CLL derives from a B-cell precursor with upregulated CD24.In this setting,CD24 might play a critical role in the anti-phagocytic signal, since MCL and CLL represents a subset of B-cell malignancies with a considerable hostile TME with M2-like TAM,able to jeopardize anti-cancer immunity.Therefore, the possibility to boost innate anti-cancer immunity through this DEMs blockade could provide new therapeutic options to previous heavily pretreated relapsed/refractory MCL and CLL patients.
Impact of Chemotherapeutic Treatments in Patients Aged 75 Years and Over Treated for Lymphoid Hematological...
NeoplasmPlasma Cell1 moreThe aim of the study is to assess the prevalence of functional decline in elderly patients treated with chemotherapy or immunochemotherapy for lymphoid hematologic malignancies. For this purpose, each patient benefits at inclusion (D0) of a standardized gerontological evaluation, and 3 and 6 months post-inclusion.
Screening Protocol for Tumor Antigen Expression Profiling and HLA Typing for Eligibility Determination...
Solid and Hematological MalignanciesThis screening study is intended for men and women ≥ 18 to ≤ 75 years of age who have advanced solid or hematologic malignancy. The study will assess a subject's human leukocyte antigen (HLA) subtype and tumor antigen expression profile. Based on the results, it will be determined if a subject is eligible to be considered for Adaptimmune sponsored clinical trials testing the safety and efficacy of genetically changed T cells targeting specific tumor antigens. No treatment intervention will occur as part of this screening study. Upon enrollment, subjects will be required to provide a blood sample for HLA subtype analysis. If the results of the analysis match the HLA-A subtypes noted in the inclusion criteria and do not express the HLA subtypes that are exclusionary for the available interventional clinical trial(s), then the subject will be required to provide either an archival tumor specimen or fresh tumor tissue biopsy. The tumor specimen will be screened at a central laboratory for the expression (protein or gene) of multiple antigens which may include, but are not limited to MAGE-A4. Based upon the results of these diagnostic analyses, if eligible, subjects will be referred to an appropriate available interventional clinical trial(s) at the discretion of the Investigator. Following screening, tumor samples will be retained by Adaptimmune for the purpose of developing and validating in vitro diagnostic (IVD) assay(s) for antigen expression profiling which is required for regulatory approval of a new therapeutic product indication.
Long Term Follow Up Of Patients Who Have Received Gene Therapy Or Gene Marked Products
Severe Combined ImmunodeficiencyMalignancy4 moreThis protocol (GENEFU) provides a mechanism for the 15-year followup period that the FDA requires for all participants in gene transfer protocols and assures that adequate followup can be maintained for a wide variety of participants on different individual gene therapy protocols at St. Jude Children's Research Hospital. GENEFU serves as an umbrella protocol for long-term follow-up (LTFU) for recipients of gene therapy/gene marked (GT/GM) products at St. Jude Children's Research Hospital. The FDA has recommended methods to assess the risk of delayed adverse events after GT/GM and has provided specific requirements regarding the duration and design of LTFU observations. This protocol is intended to provide LTFU in accordance with the FDA guidelines for those who received a GT/GM product as part of a St. Jude-sponsored clinical trial or compassionate use treatment plan. The protocol calls for a physical examination or general health evaluation and collection of required blood samples annually for up to 15 years after the last receipt of a GT/GM product. Goals will be to obtain clinical histories in order to detect late clinical outcomes suggestive of retroviral or lentiviral disease, including but not limited to cancer/second malignancies, neurologic disorders, autoimmune disorders, and hematologic disorders. Blood samples will be archived and tested when clinically or scientifically indicated, as in the event of development of a second malignancy. This prospective cohort study will utilize descriptive statistics in the analysis of long-term late effects outcomes. It offers a uniform approach to long-term safety monitoring in research participants who have received a gene-transduced product as part of St. Jude-sponsored GT or GM protocols and compassionate use treatment plans.
Long-term Follow-up After Adoptive Transfer of Genetically Modified Cell Products
Relapsed Hematologic MalignancyRefractory Hematologic MalignancyHuman gene therapy products are designed to achieve therapeutic effect through genetic modifications of human cells using retroviral or lentiviral vectors, resulting in permanent or long-acting changes in the human body. With this genetic modification comes risk of undesirable adverse events. Due to this risk, the Food and Drug Administration (FDA) and the Center for Biologics Evaluation and research (CBER) require long-term follow-up (15 years) of participants that receive investigational gene therapy products that meet defined criteria. This protocol will provide a mechanism by which to appropriately monitor participants that have received a genetically modified cellular product on a St. Jude initiated study.
Umbilical Cord Derived Mesenchymal Stem Cells for Treatment-induced Myelosuppression in Hematologic...
Hematologic NeoplasmsNeutropenia4 moreThe purpose of the study is to explore the safety and efficacy of umbilical cord derived mesenchymal stem cells in treatment-induced myelosuppression in patients with hematologic malignancies.
HEM-iSMART-A: Decitabine / Venetoclax and Navitoclax in Pediatric Patients With Relapsed or Refractory...
Acute Lymphoblastic Leukemiain Relapse4 moreHEM-iSMART is a master protocol which investigates multiple investigational medicinal products in children, adolescents and young adults (AYA) with relapsed/refractory (R/R) ALL and LBL. Sub-protocol A is a phase I/II trial evaluating the safety and efficacy of Decitabine / Venetoclax and Navitoclax in children and AYA with R/R pediatric ALL/LBL
Observational Study of Cardiac Arrhythmias in Subjects Treated With BTK Inhibitors
Chronic Lymphocytic Leukemia (CLL)Waldenstr(SqrRoot)(Delta)m s Macroglobulinemia4 moreBackground: Bruton s tyrosine kinase inhibitors (BTKi) are used to treat a form of leukemia. But taking BTKi can also increase a person s risk of developing an abnormal heart rhythm. This can cause sudden death. In this natural history study, researchers want to learn how BTKi affects the heart. Objective: To identify and monitor the effects of BTKi on the heart. Eligibility: People aged 18 and older currently receiving or planning to receive BTKi. Design: Participants who have not yet started BTKi will have 2 required clinic visits: 1 before they start taking BTKi, and 1 about 6 months later. Participants who are already taking BTKi will have 1 required visit. Participants will undergo multiple tests: A physical exam, including collection of blood and saliva. A test that measures heart activity via stickers placed on the chest. A test that uses sound waves to capture images of the heart. An exercise stress test that monitors heart activity and blood pressure while the participant works on a treadmill or stationary bike. Sound wave images of the heart may also be taken while the participant exercises. Stress magnetic resonance imaging (MRI) may be done in place of an exercise test. Participants will lie on a table that slides into a tube. They will be given drugs to stress the heart while images are taken. Participants may wear a device to monitor their heart at home. Participants may have repeat visits if they develop heart symptoms or if they need to stop taking BTKi. They will have follow-up phone calls each year for up to 3 years.
Clinical Impact of Thoracic Scanographic Characteristics of Hematologic Malignancy Patients
Mediastinal DiseasesThe mediastinum can be the site of benign or malignant tumors, including 10 to 20% of hematological malignancies. Mediastinal mass syndrome (MMS) includes symptoms due to irritation, invasion or compression of the organs of the mediastinum. This syndrome includes respiratory manifestations that may be secondary to compression of the tracheobronchial tree, venous vascular manifestations with the superior vena cava syndrome or arterial manifestations, cardiac manifestations, digestive or nervous manifestations. The management of a mediastinal syndrome is a diagnostic and therapeutic emergency requiring the collaboration of several disciplines in order to achieve the most effective but least deleterious way possible to diagnostic imaging, etiological biopsy, and the possible implementation of life-saving symptomatic measures before the initiation of etiological treatment. Diagnostic thoracic imaging relies primarily on thoracic computed tomography (CT) to determine the size and nature of the mediastinal mass, the presence and extent of tracheobronchial or great vessel compression, the presence of pleural and/or pericardial effusion, pulmonary embolism, parenchymal lesions, and possibly subdiaphragmatic lesions. However, the potential severity of MMS is often under-diagnosed in adult patients, particularly in the context of hematologic malignancy. Indeed, we have very little literature on the initial management of these patients at risk. The present study propose to conduct the first multicenter study to analyze the characteristics (clinical, scanographic, echocardiographic, hematological and resuscitation) of the initial management of patients with symptomatic MMS at diagnosis or at relapse of a patient with MH admitted to the Intensive Care Unit (ICU).
HEM-iSMART-B: Dasatinib + Venetoclax + Dexamethasone + Cyclophosphamide and Cytarabine in Pediatric...
Acute Lymphoblastic LeukemiaLymphoblastic Lymphoma (Precursor B-Lymphoblastic Lymphoma/Leukaemia) Recurrent3 moreHEM-iSMART is a master protocol which investigates multiple investigational medicinal products in children, adolescents and young adults (AYA) with relapsed/refractory (R/R) ALL and LBL. Sub-protocol B is a phase I/II trial evaluating the safety and efficacy of dasatinib + venetocolax in combination with dexamethasone + Cyclophosphamide and cytarabine in children and AYA with R/R ped ALL/LBL whose tumor present with alterations in the MAPK/SRC pathway.