Predicting allopurinol response in patients with gout

Academic Article

Abstract

  • Aims The primary aim of this research was to predict the allopurinol maintenance doses required to achieve the target plasma urate of ≤0.36 mmol l-1. Methods A population analysis was conducted in nonmem using oxypurinol and urate plasma concentrations from 133 gout patients. Maintenance dose predictions to achieve the recommended plasma urate target were generated. Results The urate response was best described by a direct effects model. Renal function, diuretic use and body size were found to be significant covariates. Dose requirements increased approximately 2-fold over a 3-fold range of total body weight and were 1.25-2 fold higher in those taking diuretics. Renal function had only a modest impact on dose requirements. Conclusions Contrary to current guidelines, the model predicted that allopurinol dose requirements were determined primarily by differences in body size and diuretic use. A revised guide to the likely allopurinol doses to achieve the target plasma urate concentration is proposed.
  • Authors

    Digital Object Identifier (doi)

    Pubmed Id

  • 19032618
  • Author List

  • Wright DFB; Duffull SB; Merriman TR; Dalbeth N; Barclay ML; Stamp LK
  • Start Page

  • 277
  • End Page

  • 289
  • Volume

  • 81
  • Issue

  • 2