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Backtracking Leukemia-Typical Somatic Mutations in Cord Blood

Recruiting
Conditions
Acute Lymphoblastic Leukemia
Acute Myeloid Leukemia
Interventions
Other: Cord blood Sample Collection
Other: Case identification and recruitment
Other: Questionnaire Administration
Registration Number
NCT05014165
Lead Sponsor
Children's Oncology Group
Brief Summary

A comprehensive mechanistic and epidemiological study to obtain banked cord blood samples from consecutive childhood leukemia patients enrolled in the COG Project:EveryChild (APEC14B1) study. Will attempt to backtrack the initiating genomic alteration identified in the matched diagnostic leukemia sample and molecularly characterize pre-leukemic cells. The ultimate goal of this research is to pinpoint the cell of origin of leukemogenic alterations formed in utero, elucidating the etiology of these initiating mutations (as opposed to frank leukemia), and devising a test for circulating pre-leukemia that can be applied on a population-wide basis.

Detailed Description

OBJECTIVES:

Primary Aim 1: To obtain stored cord blood and dried bloodspots of pediatric leukemia patients in Project:EveryChild.

Secondary Aim 2: To conduct preliminary backtracking and characterization of ALL- and AML-typical somatic mutations in cord blood and dried bloodspots.

OUTLINE:

Accrue patients with ALL and AML who indicate having banked cord blood at birth through the APEC14B1 intake questionnaire

Recruitment & Eligibility

Status
RECRUITING
Sex
All
Target Recruitment
300
Inclusion Criteria
  • The patient must have a diagnosis of acute lymphoblastic leukemia (ALL) or acute myeloid leukemia (AML).
  • Stored diagnostic pre-treatment samples corresponding to the patient's original diagnosis of leukemia must be available for request from either the COG Biopathology Center or a treating institution
  • The patient must be enrolled on APEC14B1 with consent to future contact and indicate that cord blood was stored at birth in the APEC14B1 registry intake data.
  • The patient must also have been registered with COG by a North American (limited to the U.S. and Canada) member institution.
  • ≤ 25 years old at the time of original diagnosis with ALL or AML
  • The patient must be able to understand written and spoken English or Spanish
  • All patients must provide their consent/assent, as appropriate, and for patients under the age of majority at least one parent or legal guardian must provide consent as well
  • All institutional, FDA, and NCI requirements for human studies must be met
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Exclusion Criteria
  • Patients who responded that cord blood was not stored at birth are excluded. Patients without stored diagnostic, pre-treatment leukemia samples at either the COG Biopathology Center or their treating institution are excluded.
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Study & Design

Study Type
OBSERVATIONAL
Study Design
Not specified
Arm && Interventions
GroupInterventionDescription
Ancillary-Correlative (Cord Blood collection)Case identification and recruitmentAccrue patients with ALL and AML who indicate having banked cord blood at birth through the COG Project:EveryChild (APEC14B1)
Ancillary-Correlative (Cord Blood collection)Cord blood Sample CollectionAccrue patients with ALL and AML who indicate having banked cord blood at birth through the COG Project:EveryChild (APEC14B1)
Ancillary-Correlative (Cord Blood collection)Questionnaire AdministrationAccrue patients with ALL and AML who indicate having banked cord blood at birth through the COG Project:EveryChild (APEC14B1)
Primary Outcome Measures
NameTimeMethod
Prevalence of patient-specific somatic alterations found in cord blood in each molecularly-defined subtype of leukemia leukemia patients in Project:EveryChild.up to 5 years

Investigate less common cytogenetic subtypes for which the prenatal origins have not yet been investigated.

Secondary Outcome Measures
NameTimeMethod
Density of alterations, calculated as # of alterations per # of cells assayed, within each flow-sorted cell populationUp to 5 years

Determine the prenatal origins across childhood leukemia subtypes, we will perform backtracking experiments using patient-specific ddPCR probes in matched tumor and CB samples from childhood ALL and AML patients in APEC14B1 with available stored CB. To identify the cells of origin of preleukemic alterations across childhood ALL and AML subtypes, we will perform single-cell sequencing analyses in flow-sorted CB cells from patients in which a prenatal lesion has been confirmed by backtracking.

Trial Locations

Locations (1)

University of Minnesota/Masonic Cancer Center

🇺🇸

Minneapolis, Minnesota, United States

University of Minnesota/Masonic Cancer Center
🇺🇸Minneapolis, Minnesota, United States
Logan Spector, PhD
Contact
spector@umn.edu
612-624-3912
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