In Vivo Metabolic Profiling of CLL (Chronic Lymphocytic Leukemia)

  • End date
    Oct 3, 2024
  • participants needed
  • sponsor
    University of Wisconsin, Madison
Updated on 3 July 2022
chronic lymphocytic leukemia
Accepts healthy volunteers


Metabolic reprogramming has been identified as a hallmark of cancer. Almost a century after Otto Warburg initially discovered increased glycolytic activity in tumor tissue ("Warburg effect"), therapeutic targeting of cancer metabolism has become a field of intense research effort in cancer biology.

A growing appreciation of metabolic heterogeneity and complexity is currently reshaping investigators "simplistic" understanding of metabolic reprogramming in cancer. Discovering metabolic vulnerabilities as new treatment targets for cancer requires systematic dissection of metabolic dependencies, fuel preferences, and underlying mechanisms in the specific physiological context. However, today's data on cancer cell metabolic signatures and heterogeneity in their physiological habitat of the human organism is sparse to non-existent representing a critical knowledge gap in designing effective metabolic therapies. Here, the investigators propose a "top-down" approach studying cancer cell metabolism in patients followed by mechanistic in-depth studies in cell culture and animal models to define metabolic vulnerabilities.

Investigators will develop a metabolic tracing method to quantitatively characterize metabolic signatures and fuel preferences of leukemic lymphocytes in patients with chronic lymphocytic leukemia (CLL). Isotopic metabolic tracers are nutrients that are chemically identical to the native nutrient. Incorporated stable, non-radioactive isotopes allow investigators to follow their metabolic fate by monitoring conversion of tracer nutrients into downstream metabolites using cutting-edge metabolomics analysis. Using this method, investigators propose to test the hypothesis that leukemic lymphocytes show tissue-specific metabolic preferences that differ from non-leukemic lymphocytes and that ex vivo in-plasma labeling represents a useful model for assaying metabolic activity in leukemic cells in a patient-specific manner.

Condition Chronic Lymphocytic Leukemia
Treatment [U-13C]Glucose, [13C5]glutamine
Clinical Study IdentifierNCT04785989
SponsorUniversity of Wisconsin, Madison
Last Modified on3 July 2022


Yes No Not Sure

Inclusion Criteria

Group A
Adult (18 years of age or older)
No previous history of cancer
Routine history of normal blood counts and vital signs
Documented Informed Consent
Group B
Adult (18 years of age or older)
Diagnosis of CLL with low disease burden defined as Rai stage 0 ((Lymphocytosis; no enlargement of the lymph nodes, spleen, or liver; red blood cell and platelet counts are near normal.)
Treatment naïve
Documented Informed Consent
Group C
Adult (18 years of age or older)
Diagnosis of CLL with high systemic disease burden defined as infiltration of bone marrow causing cytopenia
Treatment naïve
Able/willing to have bone marrow aspiration
Documented Informed Consent

Exclusion Criteria

For all participants
Psychiatric inpatients or people who are institutionalized
Minor (Less than 18 years of age)
History of diabetes
Cannot be on antihyperglycemic therapy
Carbohydrate restricting diets: Atkins, Vegan, Ketogenic, etc
Females of child bearing potential
Persons without decision-making capacity
Person who cannot read/write English
Not meeting inclusion criteria defined above
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