Search / Trial NCT00001533

Treatment of T-Large Granular Lymphocyte (T-LGL) Lymphoproliferative Disorders With Cyclosporine

Launched by NATIONAL HEART, LUNG, AND BLOOD INSTITUTE (NHLBI) · Dec 9, 2002

Trial Information

Current as of October 18, 2024

Completed

Keywords

Anemia Chronic T Cell Lymphocytosis With Neutropenia Immunosuppression Neutropenia T Lgl Leukemia

Description

T Cell Large Granular Lymphocyte (T-LGL) Lymphoproliferative Disorders are a heterogeneous group of uncommon diseases which may involve a polyclonal or a monoclonal T cell population, which bear characteristic surface markers corresponding to activated cytotoxic (CD3+, CD8+) lymphocytes. They are often associated with quite severe neutropenia, anemia, and thrombocytopenia which may be life-threatening. There is some evidence that the abnormal cytotoxic lymphocyte population may cause the cytopenias by suppressing hematopoiesis, although the mechanism is unclear. Case reports suggest that im...

Gender

ALL

Eligibility criteria

  • Patients must be greater than or equal to 18 years of age.
  • Peripheral blood absolute LGL count of greater than or equal to 300/ul (performed on a manual differential), with LGL cells having the characteristic appearance of large lymphocytes with abundant pale blue cytoplasm, with or without a perinuclear clear zone, with varying degrees of azurophilic granules.
  • Immunophenotypic studies of peripheral blood showing an increased population of T-LGL (Staining for: CD3, CD8, and either CD16 or CD57+/- CD56).
  • Severe neutropenia (less than or equal to 500 neutrophils/uL of peripheral blood), or severe thrombocytopenia (less than or equal to 20,000 platelets/uL, or moderate thrombocytopenia (less than or equal to 50,000 platelets/uL with active bleeding , or anemia (hemoglobin less than or equal to 9 gm/dL), or red blood cell transfusion requirement of greater than or equal to 2 units/month for two months prior to initiation of CsA treatment.
  • Patients must not have had previous treatment with CsA or FK506.
  • Patients must not have a reactive LGL lymphocytosis to a viral infection.
  • Patients must not have a ECOG performance status of greater than 3.
  • Patients must not be currently pregnant, or unwilling to take oral contraceptives unless postmenopausal.
  • Mothers must not be breast feeding.
  • Patients must be able to give informed consent.
  • Patients must not be HIV positive.

About National Heart, Lung, And Blood Institute (Nhlbi)

The National Heart, Lung, and Blood Institute (NHLBI) is a leading component of the National Institutes of Health (NIH), dedicated to advancing research and clinical trials focused on cardiovascular, pulmonary, and hematologic diseases. With a mission to improve public health through innovative research, the NHLBI supports a wide range of studies aimed at understanding, preventing, and treating heart and lung conditions. By collaborating with academic institutions, healthcare providers, and patient communities, the NHLBI strives to translate scientific discoveries into effective clinical practices, ultimately enhancing the quality of life for individuals affected by these critical health issues.

Locations

Bethesda, Maryland, United States

People applied

Timeline

First submit

Trial launched

Trial updated

Estimated completion

Not reported

Discussion 0