Stopping Tyrosine Kinase Inhibitors in Affecting Treatment-Free Remission in Patients With Chronic Phase Chronic Myeloid Leukemia


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Trial ID: NCT03817398


This phase II trial studies how stopping tyrosine kinase inhibitors will affect treatment-free remission in patients with chronic myeloid leukemia in chronic phase. When the level of disease is very low, it's called molecular remission. TKIs are a type of medication that help keep this level low. However, after being in molecular remission for a specific amount of time, it may not be necessary to take tyrosine kinase inhibitors. It is not yet known whether stopping tyrosine kinase inhibitors will help patients with chronic myeloid leukemia in chronic phase continue or re-achieve molecular remission.

Official Title

Stopping Tyrosine Kinase Inhibitors (TKI) to Assess Treatment-Free Remission (TFR) in Pediatric Chronic Myeloid Leukemia - Chronic Phase (CML-CP)

Stanford Investigator(s)


Inclusion Criteria:

   - Patient must have been diagnosed with CML-CP at < 18 years of age.

   - Patient must have histologic verification of CML-CP at original diagnosis

   - Patient must be in molecular remission (MR) with a BCR-ABL1 level of =< 0.01% BCR-ABL1
   as measured using the International Scale (IS) by RQ-PCR for >= 2 consecutive years at
   the time of enrollment

      - Please note: The lab evaluating disease status and molecular response for this
      study must be College of American Pathology (CAP) and/or Clinical Laboratory
      Improvement Amendments (CLIA) certified (United States [US] only), sites in other
      countries must be certified by their accredited authorities. All labs must use
      the International Scale guidelines with a sensitivity of detection assay =< 0.01%
      BCR-ABL1 and be able to report results in =< 2 weeks

   - Patient must have received any TKI for a minimum of 3 consecutive years at time of

   - Patient agrees to discontinue TKI therapy


   - All patients and/or their parents or legal guardians must sign a written informed

   - All institutional, Food and Drug Administration (FDA), and National Cancer Institute
   (NCI) requirements for human studies must be met


   - Age >= 8 years at the time of enrollment

   - Ability to understand English or Spanish

   - Cognitive ability to complete instruments according to the primary team


   - Patient must be 5 years or older at the time of enrollment

   - English-, French- or Spanish-speaking

   - No known history of neurodevelopmental disorder prior to diagnosis of CML (e.g., Down
   syndrome, Fragile X, William syndrome, mental retardation)

   - No significant visual or motor impairment that would prevent computer use or
   recognition of visual test stimuli

Exclusion Criteria:

   - Known T3151 mutation

   - Additional clonal chromosomal abnormalities in Philadelphia chromosome (Ph) positive
   (+) cells at any time prior to enrollment that include "major route" abnormalities
   (second Ph, trisomy 8, isochromosome 17q, trisomy 19), complex karyotype or
   abnormalities of 3q26.2

   - History of accelerated phase or blast crisis CML

   - Female patients who are pregnant

   - Lactating females are not eligible unless they have agreed not to breastfeed their

   - Female patients of childbearing potential are not eligible unless a negative pregnancy
   test result has been obtained


procedure: Biospecimen Collection

other: Drug Withdrawn

other: Quality-of-Life Assessment

other: Questionnaire Administration

drug: Tyrosine Kinase Inhibitor


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Contact Information

Stanford University
School of Medicine
300 Pasteur Drive
Stanford, CA 94305
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