Active clinical trials for "Leukemia"

This study is to find out distribution of genetic polymorphisms and genes related to the chemotherapeutic drugs of ALL.

Objectives This is an observational study aimed at updating the overall survival (OS), the progression free survival (PFS) to accelerated-blastic (AB) phase and the complete cytogenetic response (CCgR) duration of the CML patients who between 1986 and 2001 were treated with an IFN based therapy (either alone or in combination) and who obtained a CCgR. It also aims at analysing the clinical and biological features of this selected cohort of patients with persisting CCgR after treatment with IFN. Study design This study is an observational retrospective multicenter study. Assessment and Follow-up Patients' demographic data and retrospective collection of CML cytogenetic and molecular data will be reported in the "Assessment and Follow-up FORM". In this FORM the events related to therapy, disease and survival will also be reported. Duration of the study: The recruitment period is estimated in approximately 2 years.

This study will examine the effectiveness of MabThera therapy added to a standard chemotherapy regimen for the treatment of previously untreated chronic lymphocytic leukemia (CLL). Patients who have received a single prior MabThera plus chemotherapy treatment are eligible. The overall response rate of patients treated for approximately 5 months (as per current label guidelines) will be analysed according to various factors (i.e., age, concurrent treatment, and chromosomal abnormalities).

Stem cell transplantation will continue to be a treatment option for patients with chronic myeloid leukaemia, despite the introduction of tyrosine kinase inhibitors. However, many patients will have received prior therapy with TKIs, including Nilotinib or Dasatinib at the time of allogeneic stem cell transplantation. While the use of Imatinib prior to stem cell transplantation seems to have no adverse impact on the outcome of allogeneic stem cell transplantation little is known on the impact of prior use of second generation TK inhibitors. Therefore this non interventional prospective study addresses this question and patients undergoing allogeneic stem cell transplantation after prior use of 2nd generation TKIs will be followed by the data office office on engraftment, treatment related mortality, relapse rate and survival, prospectively. Details on TKI therapy will be collected by the participating centers, retrospectively. This is a non interventional prospective study. There is no upper limit to the number of patients entered, but it is estimated that up to 450 patients will be included in 150 centres for this non interventional prospective study. The registry will include patients for three years plus one more year for follow up and data analysis which should then be followed-up until the projected end of the non interventional prospective study.

RATIONALE: Studying samples of bone marrow 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 laboratory study is studying bone marrow samples from patients with acute myeloid leukemia.

The purpose of this study is to better understand the use of tyrosine kinase inhibitors (TKI) in patients newly diagnosed with CML and their quality of life in a real-world setting.

RATIONALE: Learning about physical ability and mental function over time in older patients with acute myeloid leukemia may help doctors learn about the long-term effects of treatment and plan the best treatment. PURPOSE: This clinical trial is assessing physical and mental status in older patients with newly diagnosed acute myeloid leukemia.

RATIONALE: Gathering information about patients with chronic myelogenous leukemia may help doctors learn more about the disease and find better methods of treatment and on-going care. PURPOSE: This natural history study is collecting health information and disease-related information over time from patients with newly diagnosed chronic myelogenous leukemia.

The Environmental Protection Agency has recognized that organophosphorus pesticides require close regulation and continued monitoring for human health effects and some (e.g chlorpyrifos) have been phased-out from the consumer market due to the special risk that it posed for children. There is growing evidence in support of the association between pesticide exposure and childhood leukemia. Studies of pesticides and their association with childhood cancer have been limited by study designs, self-reporting and lack of biological measurements. While several large studies in California found little evidence of an association between agricultural pesticide use and childhood leukemia, these results are in contrast with the associations observed with household exposures to pesticides. The real association may depend on timing of exposure, type of pesticide, dose and pathway of exposure. Furthermore, some persons may be more susceptible to the effects of specific pesticides due to inherited mutations in their detoxification pathways. We are conducting a pilot study to test the hypothesis that environmental exposure to pesticides in pregnancy or during the neonatal period, together with genetic susceptibility may lead to childhood ALL or brain cancer. The study is a multicenter, case-control study, based on collaboration between clinical researchers and basic science research to evaluate the risk for childhood cancer in relation to measured levels of pesticides (and their metabolites) and genetic polymorphisms. Biomarkers will be used to examine the risks of chronic low-dose exposures, and to characterize relationships between specific pesticides, childhood cancer and genetic susceptibility. Hypothesis: Interaction between environmental factors (pesticides) and maternal or child genetic polymorphisms may lead to childhood cancer.

This observational study will assess the therapeutic efficiency, treatment schedules, handling procedures, and the safety profile of rituximab in routine care in participants with CLL.