Summary

at Oakland, California and other locations
study started

Description

Summary

This research study is looking at blood samples from newborns with Down syndrome. Studying the genes expressed in samples of blood from patients with Down syndrome may help doctors identify biomarkers related to cancer.

Official Title

Biology Study of Transient Myeloproliferative Disorder (TMD) in Children With Down Syndrome (DS)

Details

PRIMARY OBJECTIVES:

  1. To further our biological understanding of the natural history of transient myeloproliferative disorder (TMD) and its relationship to subsequent leukemia by facilitating the development of a TMD cell and protein bank, and repository of DNA/RNA from megakaryoblasts for future biological studies.

II. To investigate the biology of TMD molecular changes associated with resolution of TMD or its conversion to acute myeloid leukemia within each mortality-risk group by conducting GATA1 mutational analyses, hematopoiesis clonality studies, assessment of RAS mutations, and genomic instability studies using glycophorin A assays.

III. To determine if high-resolution microarray genomic analysis of TMD blasts (using Affymetrix SNP Genechip technology to assess gene expression, copy number variation, and loss of heterozygosity) can predict the development of subsequent leukemia.

IV. To determine the relationship of minimal residual disease (monitored by peripheral blood flow cytometry and GATA1 mutational studies) to clinical remission status and development of subsequent leukemia within each mortality-risk group of TMD patients.

  1. To evaluate the relationship between karyotype (including FISH analysis) and subsequent leukemia in TMD patients.

VI. To examine pharmacogenetics and in vitro drug sensitivity to cytarabine (MTT assay) in blasts from TMD patients.

VII. To examine the relationship of functional polymorphisms in Phase I and Phase II drug detoxification genes, DNA repair, and DNA synthesis pathways that may modify susceptibility to leukemia and outcome in TMD patients.

VIII. To determine the relationship between fibrosis-associated serum factors (e.g., platelet-derived growth factor, transforming growth factor beta, N-terminal peptide of III procollagen, type IV collagen, and hyaluronic acid) and event-free survival.

OUTLINE: This is a multicenter study.

Patients undergo peripheral blood collection periodically for biomarker analysis. Samples are analyzed for GATA1 mutations by real-time PCR, polymorphisms, cytogenetics, and K-RAS mutations, gene expression, drug sensitivity patterns, and minimal residual disease by flow cytometry.

Patients are followed up periodically for 5 years.

Keywords

Myeloid Proliferations Associated With Down Syndrome Syndrome Down Syndrome Myeloproliferative Disorders Diagnostic Laboratory Biomarker Analysis Pharmacological Study Ancillary-correlative

Eligibility

Inclusion Criteria:

  • Diagnosis of transient myeloproliferative disorder (TMD) at < 90 days of age and meeting 1 of the following criteria:
  • A diagnosis of Down syndrome or Down syndrome mosaicism AND non-erythroid and non-lymphoid blasts (any amount) in the peripheral blood verified with a second sample
  • Patients with typical physical characteristics of Down syndrome are allowed before cytogenetic or FISH confirmation of the diagnosis
  • Trisomy 21-positive leukemic blasts documented by biopsy of any organ (including> 5% non-erythroid/non-lymphoid blasts documented by bone marrow aspirate or biopsy)
  • Infants with isolated trisomy 21 positivity identified only in the leukemic blasts are allowed
  • Institutional immunophenotype characterization is required for study enrollment

Locations

  • Children's Hospital and Research Center at Oakland
    Oakland California 94609-1809 United States
  • UCSF Medical Center-Parnassus
    San Francisco California 94143 United States
  • UCSF Medical Center-Mission Bay
    San Francisco California 94158 United States
  • Kaiser Permanente-Oakland
    Oakland California 94611 United States
  • Children's Hospital Central California
    Madera California 93636-8762 United States
  • Lucile Packard Children's Hospital Stanford University
    Palo Alto California 94304 United States

Details

Status
in progress, not accepting new patients
Start Date
Sponsor
Children's Oncology Group
ID
NCT00959283
Study Type
Observational
Last Updated
August 3, 2018