Active clinical trials for "Lymphoproliferative Disorders"

This is an observational cohort study of patients with a new diagnosis of B cell Chronic Lymphocytic Leukemia or B cell Non-Hodgkin's Lymphoma who will receive an anti-CD20 monoclonal antibody treatment during the induction phase of their treatment. Throughout the study, patients will have four blood draws at specified time points throughout the study. The initial blood draw will be analysed test patients for Cytomegalovirus and conduct a g-NK cell analysis. The final three blood draws will be conducted to analyse the g-NK cells at specified time points. The objectives of this study are to: 1) characterize the frequency of CMV (+) and g-NK (+) individuals in the B-NHL and B-CLL populations, 2) Determine changes in circulating g-NK cells during and after anti-CD20 monoclonal antibody containing remission induction chemotherapy and 3) Evaluate whether the presence of g-NK cells improve the outcome of anti-CD20 monoclonal antibody containing remission induction treatment of patients with B-NHL or B-CLL.

This study will help researchers learn more about non-Hodgkin's lymphoma and Hodgkin's lymphoma and how it is treated in Kenya. Researchers want to see if having certain viruses like Epstein Barr Virus (EBV), Human Immunodeficiency Virus (HIV), and Kaposi's Sarcoma Herpes Virus (KSHV) affects lymphoma. Patients in Kenya who agree to be in this study will let the resesarchers look at their medical record, follow their normal cancer care, and have blood drawn to look at different proteins and viruses. Researchers would also like to look at part of the original tumor that was taken out of each patient. Some of these samples will be stored at Kenyatta National Hospital and research will be done on them later. This study does not involve any change in treatment, but only allows the study team to follow how a patient in Kenya with lymphoma is treated.

The primary objective of this protocol is to provide expanded access to tabelecleucel to participants with Epstein-Barr virus-associated diseases and malignancies for whom there are no other appropriate therapeutic options, and who are not eligible to enroll in clinical studies designed to support the development and registration of tabelecleucel.

In many countries, numerous steps are taken to minimize the risk of infection from transfused blood products. Typically, blood banking organisations will screen for an array of infectious pathogens as part of their quality control protocol. While transmission of these tested agents via transfusion has become exceedingly rare, the risk of transfusion-transmitted infections for which testing is not currently performed continues to be a concern. Among these untested infectious agents is Epstein-Barr virus (EBV, also known as human herpesvirus-4). Most notably, infection with this virus in transplant recipients can give rise to a malignant disorder called post-transplant lymphoproliferative disease (PTLD), a life-threatening complication which is due to the uncontrolled expansion of EBV-infected cells. It is also associated with other complications such as hepatitis, hemophagocytic syndrome, etc. in transplant population. It is recognised that EBV infection can occurred in transfused immune suppressed graft recipients but the origin of the viral infection is still a matter of debate. It is a known fact that the EBV already present in the recipient's blood can undergo reactivation due to immune suppression. However, because it is known to occur more frequently in patients who are EBV-seronegative at the time of transplant, it is also accepted that primary infection contracted via an infected graft can be a source of virus. The question we are seeking to answer is whether immune suppressed graft recipients can acquire primary EBV infection via transfusion of blood products. EBV is present in the blood of most adults and cases of EBV transfusion-related infection have been reported. Transplant populations are generally transfused with very large volumes of blood products and our recent pilot study supports the possibility that transfusion-related EBV infection can be transmitted to pediatric hematopoietic stem cell (HSCT) recipients (Trottier et al, 2012). The aim of this study is to analyse the risk of EBV transmission through blood product transfusion in pediatric allogeneic HSCT patients.

Lymphoproliferative disorders (LPD) are a major cause of morbidity and mortality in immunodeficient patients. There have been isolated case reports of patients with childhood ALL who developed LPD after ALL diagnosis, without undergoing stem cell transplantation, but data regarding such cases are limited. We propose here an international collaboration, to form a comprehensive database of children who developed LPD after diagnosis of acute lymphoblastic leukemia/lymphoma

The investigator's goals in this study are to assess : Differential expression of CD200 by using flow cytometric immune-phenotyping in broad range of patients with B-chronic lymphoproliferative disorders (B-CLPD) Role of CD200 in diagnosis , classification and potential value in differential diagnosis CD200 expression level at different anatomic sites

To enhance the diagnosis of unclassifiable, non-CLL B-LPDs using next-generation sequencing technology.