Observational Study of Calaspargase Pegol in Pediatric ALL

This observational study is looking at how a medicine called calaspargase pegol (Cal-PEG) affects the blood clotting system in children and young adults (ages 2 to 22) with acute lymphoblastic leukemia (ALL) or lymphoblastic lymphoma. Researchers want to see if Cal-PEG causes changes in how your blood clots and if it leads to any serious bleeding or clotting problems. You can join if you have ALL or lymphoblastic lymphoma, are planning to receive Cal-PEG, and don't have certain pre-existing conditions like clotting disorders. The study will follow about 15 participants and collect information from blood samples and medical records over approximately 12 weeks.

Study design
This is an observational study, meaning researchers will collect information without giving you a specific treatment. It plans to include about 15 participants.
What's involved
You would have blood samples collected and your medical records reviewed. This will happen at baseline, and then approximately 4, 11, 18, and 39 days after receiving Cal-PEG.
Compensation
Not stated in the trial record.
Follow-up
The study will track any clinically relevant bleeding or clotting problems for up to 12 weeks.

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NCT07071051

Exploring the Effect of Calaspargase Pegol on the Coagulation System in Pediatric Acute Lymphoblastic Leukemia (ALL) Patients: Pilot Study

Recruiting
Not specifiedAges 2–22Observational
Mayo Clinic
~15 participants
Updated 2026-02-13 on ClinicalTrials.gov
What's tested:Non-Interventional Study

At a glance

Recruiting sites
1 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Change in coagulation - frequency
Measured over Baseline (either before first dose or after at least 6 weeks from last Cal-PEG administration); approximately 4, 11, 18, and 39 days after Cal-PEG administration
+2 more outcomes measured
Childhood Acute Lymphoblastic Leukemia
Childhood Lymphoblastic Lymphoma
1 sites across 1 states
Minnesota1
  • Madeleine B. O'Keefe, MD · PRINCIPAL_INVESTIGATOR · Mayo Clinic in Rochester

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Eligibility criteria

Inclusion

Age 2-21.5 years
Confirmed diagnosis of acute lymphoblastic leukemia/lymphoma
Planned treatment with Cal-PEG
Informed consent obtained from parents or guardians

Exclusion

Pre-existing coagulation disorders
Known hypersensitivity to asparaginase products
Liver failure
Any acute or chronic disease that is known to affect coagulation testing (e.g. nephrotic syndrome)
Currently pregnant
Use of systemic blood thinner within 48 hours prior to study blood draw
  • Change in coagulation - frequencyBaseline (either before first dose or after at least 6 weeks from last Cal-PEG administration); approximately 4, 11, 18, and 39 days after Cal-PEG administration

    Frequency of coagulation changes in patients with Acute Lymphoblastic Leukemia (ALL) who receive Cal-peg as part of their treatment. Blood samples will be collected at baseline (pre-treatment: either before first dose or after at least 6 weeks from last Cal-PEG administration) and at 4-, 11-, 18-, and 39-- -days post-Cal-PEG administration (time points can be adjusted based on routine clinical testing within ± 4 days).

  • Change in coagulation - durationBaseline (either before first dose or after at least 6 weeks from last Cal-PEG administration); approximately 4, 11, 18, and 39 days after Cal-PEG administration

    Duration of coagulation changes in patients with Acute Lymphoblastic Leukemia (ALL) who receive Cal-peg as part of their treatment. Blood samples will be collected at baseline (pre-treatment: either before first dose or after at least 6 weeks from last Cal-PEG administration) and at 4-, 11-, 18-, and 39-- -days post-Cal-PEG administration (time points can be adjusted based on routine clinical testing within ± 4 days).

  • Incidence of clinically relevant hematologic or thrombotic adverse eventsUp to 12 weeks

    Assessed according to Common Terminology Criteria for Adverse Events (CTCAE) criteria. Will describe clinically relevant hematologic or thrombotic adverse events in patients with ALL who receive Cal-PEG as part of their treatment.