Author Correction: Measured glomerular filtration rate (GFR) significantly and rapidly decreases after radical cystectomy for bladder cancer

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

Perspective on New Equations for Estimating Glomerular Filtration Rate

The Kidney Disease Improving Global Outcomes 2012 Clinical Practice Guideline on Chronic Kidney Disease (1) recommends calculating estimated glomerular filtration rate (eGFR) using equations developed by the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) for adults ≥18 years (2) and by the Chronic Kidney Disease in Children (CKiD) for ages <18 years (3). These equations were recommended because they used readily available information, serum/plasma/blood creatinine, plus age, sex, and race for adults, and height for children; and have been validated in large and diverse cohorts of people who had measured glomerular filtration rate (mGFR) as a basis for establishing accuracy.

Concomitant weekly cisplatin-based chemoradiotherapy in head and neck cancer: the value of a second measured glomerular filtration rate during treatment

Objectives: To assess the efficacy of the second measured glomerular filtration rate (GFR) during the course of weekly cisplatin-based chemoradiotherapy in head and neck cancer. Methods: Data was collected on consecutive 221 head and neck cancer patients who underwent cisplatin-based chemoradiotherapy. Results: 68% patients managed to complete at least five out six proposed cycles of cisplatin, with a cumulative dose of ≥200 mg/m 2 . 181 patients underwent second measured GFR and it showed a mean fall in measured GFR by 12.0 ml/min/1.73 m 2 (p < 0.0001). Out of these 181 patients, in 16 patients (9%), the decision to discontinue cisplatin was purely based on a low second measured GFR (below 50 ml/min/1.73 m 2 ). Conclusion: Our study has shown that obtaining a second measured GFR is valuable in 9% of these patients. We propose that this should be considered as a standard procedure in these settings and also should be considered incorporating this additional safety measure, into future clinical trials as a mandatory procedure. Advances in knowledge: To the best of author’s knowledge, this is first study of its kind. The results of our study suggest that it should be a standard procedure of obtaining a second GFR in these settings.