Irish Journal of Medical Science

, Volume 178, Issue 3, pp 301–307 | Cite as

Evaluation of carboplatin dosage based on 4-variable modification of diet in renal disease equation

  • A. Barry
  • R. O’Cearbhaill
  • D. Griffin
  • P. Donnellan
  • M. Keane
  • H. Grimes
Original Article



Traditionally, carboplatin dosage is based on the Calvert formula. Glomerular filtration rate (GFR) and creatinine clearance (CrCl) are often used interchangeably in this formula. The modification of diet in renal disease (MDRD) equation is now routinely available to estimate GFR (eGFR).


We performed a retrospective analysis of carboplatin dosage in our institute. Calvert formula derived carboplatin dose using eGFR calculated from the MDRD equation was compared to estimated CrCl from the Cockcroft-Gault and Jelliffe equations.


Ninety-two carboplatin treatment episodes were recorded. eGFR and CrCl correlated reasonably well with a correlation coefficient (r) of 0.88. The correlation was weakest at lower levels of serum creatinine. Correcting eGFR for body surface area resulted in a tighter correlation (r = 0.94).


The MDRD derived eGFR is readily available and may prove very useful in calculating carboplatin dosage for patients with impaired renal function.


Carboplatin Creatinine clearance Estimated glomerular filtration rate Calvert formula Modification of diet in renal disease 


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Copyright information

© Royal Academy of Medicine in Ireland 2008

Authors and Affiliations

  • A. Barry
    • 1
  • R. O’Cearbhaill
    • 2
  • D. Griffin
    • 3
  • P. Donnellan
    • 4
  • M. Keane
    • 4
  • H. Grimes
    • 5
  1. 1.21 Ashley CourtDublin 4Ireland
  2. 2.Department of Medical OncologyBeaumont HospitalDublinIreland
  3. 3.Department of Clinical BiochemistryGalway University HospitalGalwayIreland
  4. 4.Department of Medical OncologyGalway University HospitalGalwayIreland
  5. 5.Department of Clinical BiochemistryGalway University HospitalGalwayIreland

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