Active clinical trials for "Leukemia, Lymphoid"

The purpose of this study is to explore the impact of thiopurine methyltransferase (TPMT) activity on the risk of HDM-related bone marrow- and hepatotoxicity and treatment interruptions during maintenance therapy for children with ALL. Hypothesis of the study: Patients with TPMT activity compatible with TPMT low activity polymorphisms have an increased risk of toxicity following high-dose methotrexate (HDM) compared to children with normal TPMT activity.

A minority of patients with adult acute lymphoblastic leukemia (ALL) relapse are rescued. The aim of this population-based study was to assess the results of reinduction treatment and allogeneic stem cell transplantation (SCT) in second complete remission (CR) in Sweden 2003-2007.

This study will evaluate the association between changes in basic cognitive and behavioral functioning by the end of chemotherapy treatment, and the later development of higher order executive functions in pediatric acute lymphoblastic leukemia (ALL). The association between acute treatment-related changes in brain integrity and subsequent brain maturation in long-term survivors of pediatric ALL will be evaluated. The association between patterns of behavioral and executive dysfunction and brain maturation in long-term survivors of pediatric ALL will be examined. The association between genetic polymorphisms in key enzyme pathways and higher order brain development in long-term survivors of pediatric ALL will be explored. The associations between biologic and behavioral indices of fatigue/sleep and higher order brain development in long-term survivors of pediatric ALL will be explored.

RATIONALE: Studying samples of blood or tumor tissue from patients with cancer in the laboratory may help doctors learn more about changes that occur in DNA and identify biomarkers related to cancer. PURPOSE: This research study is studying biomarkers in DNA samples from patients with newly diagnosed high-risk acute lymphoblastic leukemia.

Background: Chronic lymphocytic leukemia (CLL), small lymphocytic lymphoma (SLL), and mantle cell lymphoma (MCL) are types of cancers in which there are too many abnormal lymphocytes (a type of white blood cell). Monoclonal B-cell lymphocytosis (MBL) is a condition in which the individual has a larger than normal number of lymphocytes. Individuals with CLL, SLL, MBL, and MCL may survive for many years without the need for treatment, but there is an apparent correlation between cell birth rates and disease activity. By studying the birth and death rates of lymphocytes, researchers hope to identify individuals who are at risk for worsening disease. Heavy water is similar in structure to regular water, but it has two deuterium atoms instead of two hydrogen atoms. Deuterium has one more neutron than hydrogen, which is what makes heavy water heavy. Heavy water is not radioactive, looks and tastes like regular water, and has no known harmful effects at research-level doses. When a small amount of heavy water is consumed daily, newly produced blood cells are labeled (tagged), which allows researchers to track cell growth and to measure the birth and death rates of CLL, SLL, MBL, MCL or normal lymphocytes. Objectives: - To study the birth and death rates of lymphocytes from individuals with MBL, CLL/SLL, and MCL, compared with lymphocytes from healthy volunteers. Eligibility: Individuals at least 18 years of age who have been diagnosed with MBL, CLL, SLL, or MCL, but who have not been taking certain agents (Viagra, Levitra, Cialis, or other PDE-inhibitors, prednisone, cyclosporin-A, rapamycin, or other immunosuppressive agents, more than 2 cups of green tea daily, or Celebrex) for 4 weeks prior to enrollment in the study. Healthy volunteers at least 18 years of age, but who have not been taking certain agents (Viagra, Levitra, Cialis, or other PDE-inhibitors, prednisone, cyclosporin-A, rapamycin, or other immunosuppressive agents, more than 2 cups of green tea daily, or Celebrex)for 4 weeks prior to enrollment in the study. Design: Participants will be screened with a medical history, physical examination, and initial blood tests. Other tests may be administered to the individuals with cancer, as required by the study researchers. All participants will drink regular doses of heavy water daily for a total of 4 weeks (labeling period). There is an optional 6-month follow-up or wash-out period during which no additional heavy water will be consumed. Blood samples will be collected weekly during the labeling period, and a bone marrow biopsy will be obtained where possible. Individuals with cancer may also have a lymph node biopsy during this part of the study. Additional blood samples may be collected during the optional wash-out phase of the study to determine the rate at which cancer cells disappear. Treatment is not provided as part of this protocol.

RATIONALE: Gathering information about how often kidney dysfunction occurs in children and young adults receiving methotrexate for acute lymphoblastic leukemia may help doctors learn more about the disease and plan the best treatment. PURPOSE: This research study is looking at kidney dysfunction in children and young adults who have received low-dose or intermediate-dose methotrexate for acute lymphoblastic leukemia.

The purpose of this registry is to record information on therapy reality of malignant lymphatic systemic diseases by office-based haematologists in Germany.

The primary goal of this study is to provide comprehensive and objective information on impairments of musculoskeletal health, sensory function, and fitness among a large group of childhood ALL survivors, and to define high risk groups by assessing treatment factors that contribute to impaired function. This study includes a direct, objective evaluation of musculoskeletal function, sensory capacity, fitness, and physical activity patterns among adults who were treated for childhood ALL at St. Jude Children's Research Hospital (SJCRH) between 1980 and 1999. Among 899 ALL survivors, all of whom are eligible for an institutionally funded clinical study of medical late effects, the study will recruit 364 to participate in our evaluations. The study will also recruit 364 individuals for a comparison group, frequency matching on race/ethnicity, age and gender.

Chronic lymphocytic leukemia (CLL) is the most common leukemia in adults in Western countries; it is stratified as a subtype of indolent lymphoid malignancy with a long but slowly progressive nature history. However, the clinical course of CLL actually varies widely. Thus, many clinical and molecular features have been identified for outcome predictions. The accurate predictions of prognosis through those factors help for the decision making on the treatment, i.e. to treat patients of high risk of early progression or poor overall survival (OS) with alternative or investigational therapies, while to avoid unnecessary over-treatment for low-risk patients. CLL is much less prevalent in Eastern countries; presently, most available data on CLL are derived mainly from Western countries. However, a previous report concerning the epidemiology of CLL in Taiwan revealed a drastic increase in the age-adjusted incidence of CLL, a trend not found in Western countries where the incidence rate of CLL remained steadily stable over time. In addition to this epidemiological difference, a population-based analysis has found the overall outcome of CLL, estimated by relative survivals, is steadily much poorer in Taiwanese patients than in US Caucasians. In another report about the cytogenetic profiles in a small cohort of CLL patients in Taiwan, a novel cytogenetic abnormality was found to correlate with poorer outcomes. These reports suggest the existence of ethnic differences in the disease natures of CLL between the East and the West. To delineate the possible underlying racial differences, especially in the molecular prognostic profiles that might underlie the outcome disparity between Taiwanese and western CLL patients, a comprehensive surveillance of the molecular profiles for CLL in Taiwan is of importance. In this study, we are going to enroll around 250 CLL patients; their clinical parameters will be recorded, their blood samples will be collected for a panel of molecular and cytogenetic factor studies. The molecular markers to be tested in this project include (but not limited to) cytogenetic abnormalities by fluorescent-in-situ hybridization (FISH), immunoglobulin heavy chain variable region (IGHV) hypermutation status, gene mutations for Notch1, SF3B1, p53, MyD88, and BIRC3, and the expressions for ZAP70 and stem cell factor (SCF). These proposed markers include not only the conventional prognostic markers derived from Western studies, and also some novel explorations from our preliminary results, such as SCF and trisomy 3. Through this study, a comprehensive profile of CLL in Taiwan will be established to identify the characteristics of CLL in Taiwanese patients and to address the underlying factors of ethnic differences in the disease nature and outcomes of this disease.

Evaluation of safety profile and tolerability of MabThera (rituximab) in combination with chemotherapy (fludarabine and cyclophosphamide) in the treatment of Chronic Lymphocytic Leukemia (CLL).