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A Pediatric Study of a Plerixafor Containing Regimen In Second Allogeneic Stem Cell Transplantation

31 dicembre 2013 aggiornato da: St. Jude Children's Research Hospital

A Phase I Pediatric Study of a Plerixafor Containing Regimen In Second Allogeneic Stem Cell Transplantation

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. Novel therapeutic agents that target molecular signaling mechanisms and increase the sensitivity of leukemic cells to apoptosis may clearly play a role in this setting.

This study hypothesizes that interrupting the SDF-1/CXCR4 axis using the selective CXCR4 antagonist plerixafor may be useful as a leukemic stem cell mobilizing agent for patients who are refractory to standard dose chemotherapy and in relapse after an allogeneic transplant. This hypothesis is based on the dependence of leukemia cells on MSCs for survival signals as described above and on the preclinical data that suggest increased efficacy by antileukemia agents when leukemia cells are separated from MSCs.

In the present trial, the study proposes to add plerixafor to enhance the conditioning regimen cytotoxicity. At this time the goal is to determine the maximum tolerated dose (MTD) of plerixafor through the process of dose limiting toxicity (DLT) evaluation. Pharmacokinetic studies will be conducted. Additional studies will quantify and the content of leukemia cells and key regulatory and effector T cell populations in the bone marrow and blood before and after exposure to this medication.

If the observed outcomes of this trial are promising, it could serve as a platform on which to study further use of plerixafor as a complimentary agent with conditioning as well as other chemotherapeutic regimens for patients with relapsed or refractory hematologic malignancies.

Panoramica dello studio

Descrizione dettagliata

This study will determine the following objectives:

  1. To determine the dose-limiting toxicity (DLT) and maximum tolerated dose (MTD) of plerixafor in combination with fludarabine, thiotepa, and melphalan as a conditioning regimen for children and young adults undergoing a second allogeneic stem cell transplant (SCT) procedure.
  2. The study determines the secondary objectives:

    • To describe the pharmacokinetic properties of plerixafor in this study population
    • To estimate the cumulative incidence of relapse and overall survival in study participants at one year after this second transplant procedure
  3. Other exploratory objectives include:

    • To study the correlation between the pharmacokinetic properties of plerixafor and key regulatory and effector T cell populations in blood before and after exposure to plerixafor.
    • To evaluate the content of leukemia cells in bone marrow and in blood before and after exposure to plerixafor
    • To evaluate key regulatory and effector T cell populations in bone marrow and in blood before and after exposure to plerixafor

Tipo di studio

Interventistico

Iscrizione (Effettivo)

12

Fase

  • Fase 1

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Luoghi di studio

    • Tennessee
      • Memphis, Tennessee, Stati Uniti, 38105
        • St. Jude Children's Research Hospital

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

Non più vecchio di 21 anni (Bambino, Adulto)

Accetta volontari sani

No

Sessi ammissibili allo studio

Tutto

Descrizione

Inclusion Criteria:

  • Age less than or equal to 21 years old.
  • One of the following hematologic malignancies that has relapsed after prior allogeneic hematopoietic stem cell transplantation:
  • Acute lymphoblastic leukemia (ALL)
  • Acute myeloid leukemia (AML)
  • Myelodysplastic syndrome (MDS)
  • Chronic myeloid leukemia (CML)
  • Juvenile myelomonocytic leukemia (JMML)
  • Non-Hodgkin's lymphoma (NHL) with evidence of bone marrow disease
  • Has a suitable human leukocyte antigen (HLA) matched family member or unrelated donor available for stem cell donation. A "matched" donor is defined as matching at 5/6 or 6/6 HLA loci.
  • Does not have active central nervous system (CNS) malignancy (history of CNS disease allowed).
  • No prior neuromuscular dysfunction or all prior grade I-IV neuromuscular dysfunctions have subsided > 4 weeks prior to enrollment.
  • Cardiac shortening fraction greater than or equal to 25%.
  • Creatinine clearance greater than or equal to 50 ml/min/1.73 m2
  • Forced vital capacity (FVC) greater than or equal to 40% of predicted value or pulse oximetry greater than or equal to 92% on room air.
  • Karnofsky or Lansky (age-dependent) performance score of greater than or equal to 50 .
  • Off all treatment for acute or chronic graft-versus-host disease (GVHD) for at least 7 days prior to the initiation of conditioning.
  • Bilirubin less than or equal to 3 times the upper limit of normal for age.
  • Alanine aminotransferase (ALT) less than or equal to 3.0 times the upper limit of normal for age.
  • White blood cell count of less than 50,000/mm3
  • Not pregnant as confirmed by negative serum or urine pregnancy test within 14 days prior to enrollment.
  • Not lactating.
  • All patients of childbearing potential must agree to use an effective birth control method

Exclusion Criteria:

  • Pregnant and lactating females are excluded from participation as the short and long-term effects of the preparative agents and infusion on a fetus and a nursing child through breast milk are not entirely known at this time.

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Trattamento
  • Assegnazione: N / A
  • Modello interventistico: Assegnazione di gruppo singolo
  • Mascheramento: Nessuno (etichetta aperta)

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Altro: Second Allogeneic Transplant Procedure Recipient

Participants with Acute Lymphoblastic Leukemia (ALL); Acute Myeloid Leukemia (AML); Myelodysplastic Syndrome (MDS); Chronic Myeloid Leukemia (CML); Juvenile Myelomonocytic Leukemia (JMML); Non-Hodgkin lymphoma (NHL) with evidence of bone marrow disease, receiving a second allogeneic transplant procedure.

Intervention: Plerixafor

Plerixafor in combination with fludarabine, thiotepa and melphalan as a conditioning regimen for patients undergoing a second allogeneic transplant procedure (bone marrow or peripheral blood). A traditional 3+3 phase I design will be employed during this study, where dose escalations are planned in groups of 3 participants. No intra-participant escalation will be allowed and dose escalation will not be considered until toxicity information is available from at least 3 evaluable participants at the current dose level.Plerixafor will be given intravenously (IV) rather than subcutaneously (SQ) to minimize discomfort associated with repeated daily injections (up to 3) to the pediatric population of this study.
Altri nomi:
  • AMD3100
  • Mozobil®

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Lasso di tempo
To determine the dose-limiting toxicity and maximum tolerated dose of plerixafor in combination with fludarabine, thiotepa and melphalan as a conditioning regimen for patients undergoing a second allogeneic transplant procedure.
Lasso di tempo: 7 days post transplant
7 days post transplant

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Pubblicazioni e link utili

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Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio

1 maggio 2010

Completamento primario (Effettivo)

1 ottobre 2013

Completamento dello studio (Effettivo)

1 ottobre 2013

Date di iscrizione allo studio

Primo inviato

11 febbraio 2010

Primo inviato che soddisfa i criteri di controllo qualità

11 febbraio 2010

Primo Inserito (Stima)

12 febbraio 2010

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Stima)

1 gennaio 2014

Ultimo aggiornamento inviato che soddisfa i criteri QC

31 dicembre 2013

Ultimo verificato

1 dicembre 2013

Maggiori informazioni

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .

Prove cliniche su Leucemia mieloide acuta

Prove cliniche su Plerixafor

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