Active clinical trials for "Lymphoma"

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: Studying samples of serum from patients with cancer in the laboratory may help doctors identify and learn more biomarkers related to cancer. It may also help doctors predict how well patients will respond to treatment. PURPOSE: This research study is studying vitamin D insufficiency in determining prognosis in patients with newly diagnosed follicular lymphoma.

The designed study follows up the retrospective previous one by the International T-cell Non-Hodgkin's Lymphoma Study Group (International Peripheral T-Cell Lymphoma Project). It is designed as a prospective collection of information potentially useful to predict the prognosis of newly diagnosed patients with the more frequent subtypes of Peripheral T-cell lymphoma (Peripheral T-cell lymphoma unspecified and Angioimmunoblastic T-cell lymphoma) and to better define clinical characteristics and outcome of the more uncommon subtypes

RATIONALE: Determination of genetic markers for aggressive non-Hodgkin's lymphoma may help identify patients with this disease and help predict the outcome of treatment. PURPOSE: Diagnostic study to determine the genetic markers in patients who have aggressive non-Hodgkin's lymphoma.

RATIONALE: Heparin or enoxaparin may be effective in preventing the formation of blood clots in patients with cancer who are undergoing surgery to remove the tumor. PURPOSE: Randomized clinical trial to compare the effectiveness of heparin with that of enoxaparin in patients who have cancer.

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

The purpose of this study is to determine if higher absolute lymphocyte count in the infused stem cell autograft (A-ALC) will lead to an improved antibody response to post-transplant immunization with Pneumococcal Conjugate Vaccine and permit effective immunization at 6 months post-transplant in lymphoma patients receiving Autologous Peripheral Blood Stem Cell Transplantation.

RATIONALE: Collecting and storing samples of blood and bone marrow from patients with cancer to study in the laboratory may help doctors learn more about diagnosing cancer and determine a patient's eligibility for a treatment clinical trial. It may also help the study of cancer in the future. PURPOSE: This laboratory study is collecting tissue samples from patients with leukemia or other blood disorders who are planning to enroll in an ECOG leukemia treatment clinical trial.

The purpose of this study is to better understand why some women who survived cancer or a related illness later develop diabetes, problems with their cholesterol, or other problems that may lead to heart disease. Because these problems may be related to treatment with total body irradiation and a stem cell transplant, the investigators will compare the rates of obesity, cholesterol problems, and diabetes between women who were treated with total body irradiation and a stem cell transplant and women who were not. The amount and location of fat stores in the abdomen is more important than overall weight or total body fat in the development of diabetes and cholesterol problems. In general, fat can be stored in several areas in the abdomen: around the organs (visceral fat), under the skin (subcutaneous fat), and in the liver (liver fat). People with higher amounts of fat around the organs (visceral fat), even those with a normal weight, are more likely to become diabetic or have high cholesterol. The amount of fat in each of these areas can be measured with an abdominal magnetic resonance imaging (MRI). In this study, the investigators will use blood tests, height, weight, waist circumference, blood pressure measurements, and an abdominal MRI to evaluate for several risk factors of heart disease, including cholesterol problems, diabetes and pre-diabetes, elevated blood pressure, and increased abdominal fat.

To characterize the molecular and cell biology of the tumor cells in lymphoma. The mechanism of monoclonal antibody treatment by rituximab or epratuzumab will also be examined.