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Consensus Guideline for Use of Glucarpidase in Patients with High-Dose Methotrexate Induced Acute Kidney Injury and Delayed Methotrexate Clearance

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  • Laura B Ramsey
  • Frank M Balis
  • Maureen M O'Brien
  • Kjeld Schmiegelow
  • Jennifer L Pauley
  • Archie Bleyer
  • Brigitte C Widemann
  • David Askenazi
  • Sharon Bergeron
  • Anushree Shirali
  • Stefan Schwartz
  • Alexander A Vinks
  • Jesper Heldrup
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Acute kidney injury due to high-dose methotrexate (HDMTX) is a serious, life-threatening toxicity that can occur in pediatric and adult patients. Glucarpidase is a treatment approved by the Food and Drug Administration for high methotrexate concentrations in the context of kidney dysfunction, but the guidelines for when to use it are unclear. An expert panel was convened to provide specific, expert consensus guidelines for the use of glucarpidase in patients who develop HDMTX-induced nephrotoxicity and delayed methotrexate excretion. The guideline provides recommendations to identify the population of patients who would benefit from glucarpidase rescue by more precisely defining the absolute methotrexate concentrations associated with risk for severe or life-threatening toxicity at several time points after the start of an HDMTX infusion. For an HDMTX infusion ≤24 hours, if the 36-hour concentration is above 30 µM, 42-hour concentration is above 10 µM, or 48-hour concentration is above 5 µM and the serum creatinine is significantly elevated relative to the baseline measurement (indicative of HDMTX-induced acute kidney injury), glucarpidase may be indicated. After a 36- to 42-hour HDMTX infusion, glucarpidase may be indicated when the 48-hour methotrexate concentration is above 5 µM. Administration of glucarpidase should optimally occur within 48-60 hours from the start of the HDMTX infusion, because life-threatening toxicities may not be preventable beyond this time point.

IMPLICATIONS FOR PRACTICE: Glucarpidase is a rarely used medication that is less effective when given after more than 60 hours of exposure to high-dose methotrexate, so predicting early which patients will need it is imperative. There are no currently available consensus guidelines for the use of this medication. The indication on the label does not give specific methotrexate concentrations above which it should be used. An international group of experts was convened to develop a consensus guideline that was specific and evidence-based to identify the population of patients who would benefit from glucarpidase.

OriginalsprogEngelsk
TidsskriftThe oncologist
Vol/bind23
Udgave nummer1
Sider (fra-til)52-61
Antal sider10
ISSN1083-7159
DOI
StatusUdgivet - 2018

ID: 52178660