Description Module
The Description Module contains narrative descriptions of the clinical trial, including a brief summary and detailed description. These descriptions provide important information about the study's purpose, methodology, and key details in language accessible to both researchers and the general public.
Description Module path is as follows:
Study -> Protocol Section -> Description Module
Description Module
Ignite Creation Date:
2025-12-24 @ 10:36 PM
Ignite Modification Date:
2025-12-24 @ 10:36 PM
NCT ID:
NCT00824135
Brief Summary:
Patients with refractory hematologic malignancies including those who develop recurrent disease after allogeneic hematopoietic stem cell transplantation (HSCT) have a dismal prognosis. Historically, both regimen-related mortality and disease recurrence have been significant causes of treatment failure in this heavily pre-treated patient population. The investigators institution has utilized mismatched family member donors for these patients for several reasons: (1) Only 30% of patients have matched related donors available; (2) transplantation can be performed more rapidly since the time to unrelated donor trans-plantation averages 3 to 4 months; (3) the alloimmune reactivity of natural killer (NK) cells following haploidentical HSCT has been shown to reduce relapse rates in certain patient groups; and, (4) no other curative treatment options are available.
In the present trial, the investigators propose a novel conditioning regimen using clofarabine in an effort to enhance cytotoxicity while simultaneously reducing regimen related toxicity. In this phase I trial, the goal is to determine the maximum tolerated dose (MTD) of clofarabine when used in combination with melphalan and thiotepa pre-transplant.
Detailed Description:
The primary objective of this trial is to determine the maximum tolerated dose of clofarabine in combination with thiotepa and melphalan as a conditioning regimen for a haploidentical stem cell transplant with an engineered graft depleted of CD3+ cells. Study participants will children and young adults with refractory hematologic malignancies.
Secondary objectives include the following:
* To describe the one-year overall survival (OS) and event-free survival (EFS) rates in these study participants.
* To determine the time to hematopoietic recovery and donor cell engraftment following this study treatment.
* To estimate the cumulative incidence of relapse in study participants.
* To estimate the incidence of overall grade II-IV and grade III-IV acute GVHD and the rate of chronic GVHD.
* To estimate the incidence and describe the causes of non-hematologic regimen-related toxicity and regimen-related mortality in the first 100 days post HSCT.
* To explore the biologic significance of soluble interleukin-2 (IL-2) receptor, tumor necrosis factor (TNF), and lymphocyte reconstitution (qualitative and quantitative, V beta spectratyping, TREC
Study:
NCT00824135
Study Brief:
Protocol Section:
NCT00824135