Neutrophil Extracellular Traps Formation Post-hematopoietic Stem Cell Transplantation (NETs post HSCT)
|ClinicalTrials.gov Identifier: NCT01491230|
Recruitment Status : Unknown
Verified December 2011 by Michal Roll PhD,MBA, Tel-Aviv Sourasky Medical Center.
Recruitment status was: Recruiting
First Posted : December 13, 2011
Last Update Posted : December 13, 2011
|Condition or disease|
Although neutrophil engraftment takes place 10 to 14 days after autologous HSCT, and 15 to 30 days after allogeneic HSCT, using an ablative conditioning regimen, neutrophil dysfunction may persist for longer periods. Relatively scant data exists on neutrophil function following HSCT. After autologous HSCT, the respiratory burst and phagocytosis may be decreased for up to 3 months. After allogeneic HSCT, respiratory burst and chemotaxis are generally decreased for 4 to 6 months. Factors such as continuation of chemotherapy, immunosuppression, and GVHD contribute to this prolonged dysfunction. No data exist on reconstitution of NETs following HSCT.
Nets production and other neutrophil functions will be examined at several time points: before transplantation, at neutrophil engraftment, 6 weeks, 3 months, 6 months, 9 months, 1 year, 1.5 years, 2 years, and 3 years post-transplant, or until normalization of neutrophil function at 2 consecutive time points. Data gathered on patients will cover:
- Tumor histological type, staging, previous chemotherapy regimen, and initial response to treatment.
- HSCT procedure - type of conditioning regimen, type of graft (autologous or allogeneic - related donor/unrelated donor/cord blood), use of bone marrow stem cells (SCs) or peripheral mobilized SCs, number of SCs given, post-transplant immunosuppression, post-transplant prophylactic antimicrobial treatment, infections during the study period, and GVHD occurrence and treatment.
Neutrophil examinations will be done in collaboration with the Laboratory for Leukocyte Function of the Department of Pediatrics, Meir Medical Center, Kfar Saba and NETs visualization with the Department of Cellular Microbiology at the Max Planck Institute for Infection Biology, Berlin.
|Study Type :||Observational|
|Estimated Enrollment :||50 participants|
|Official Title:||Neutrophil Extracellular Traps (NETs) Formation Post-hematopoietic Stem Cell Transplantation (HSCT) and Its Relation to Chemotaxis and Creation of Reactive Oxygen Species|
|Study Start Date :||December 2011|
|Estimated Primary Completion Date :||December 2014|
|Estimated Study Completion Date :||December 2014|
|25 autologous/25 allogeneic patients|
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01491230
|Contact: Sivan Achituv, MDemail@example.com|
|Contact: Ronit Elhasid, MDfirstname.lastname@example.org|
|Dana Children's Hospital, Tel-Aviv Sourasky Medical Center||Recruiting|
|Tel-Aviv, Israel, 64239|
|Contact: Sivan Achituv, MD 972-3-6974270 email@example.com|
|Principal Investigator: Sivan Achituv, MD|
|Principal Investigator:||Sivan Achituv, MD||Tel-Aviv Sourasky Medical Center|