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Lipidomics of cyclophosphamide 4-hydroxylation in patients receiving post-transplant cyclophosphamide. | LitMetric

Lipidomics of cyclophosphamide 4-hydroxylation in patients receiving post-transplant cyclophosphamide.

Clin Transl Sci

Department of Hematologic Malignancies Translational Sciences, City of Hope, Duarte, California, USA.

Published: November 2022

AI Article Synopsis

Article Abstract

Biomarker-guided dosing may improve the efficacy and toxicity of cyclophosphamide (CY); however, clinical studies evaluating their association with the area under the plasma concentration-time curve (AUC) of CY and its metabolites are time- and resource-intensive. Therefore, we sought to identify lipidomic biomarkers associated with the time-varying differences in CY formation clearance to 4-hydroxycyclophosphamide (4HCY), the principal precursor to CY's cytotoxic metabolite. Hematopoietic cell transplant (HCT) patients receiving post-transplant CY (PT-CY) were enrolled, cohort 1 (n = 25) and cohort 2 (n = 26) donating longitudinal blood samples before they started HCT (pre-HCT), before infusion of the donor allograft (pre-graft), before the first dose of PT-CY (pre-CY) and 24 h after the first dose of PT-CY (24-h post-CY) which is also immediately before the second dose of CY. A total of 409 and 387 lipids were quantitated in the two cohorts, respectively. Associations between lipids, individually and at a class level, and the ratio of 4HCY/CY AUC (i.e., 4HCY formation clearance) were evaluated using linear regression with a false discovery rate <0.05. There were no individual lipids that passed control for false discovery at any time point. These results demonstrate the feasibility of lipidomics, but future studies in larger samples with multiple omic tools are warranted to optimize CY dosing in HCT.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9652445PMC
http://dx.doi.org/10.1111/cts.13404DOI Listing

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