Published in:
01-04-2014 | Original Paper
Dialysis-requiring acute kidney injury increases risk of long-term malignancy: a population-based study
Published in: Journal of Cancer Research and Clinical Oncology | Issue 4/2014
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Background
Acute kidney injury (AKI) is gaining worldwide attention recently, emerging as a major public health threat. However, the association between the development of AKI and subsequent malignancy has not been studied before.
Methods
We conducted a population study based on the Taiwan National Health Insurance database, using 1,000,000 representative database during 2000–2008. All patients’ survival to discharge from index hospitalization with recovery from dialysis-requiring AKI were identified (recovery group), and matched with those without recovery and those without AKI, at a 1:1:1 ratio.
Results
We identified 625 individuals more than 18 years old [352 male (56.5 %); mean age, 63.3 years] in recovery group and matched 625 individuals in each group. During a mean followed-up of 3.7 years, the incidences of new-onset malignancy were 4.2, 2.9, and 2.6 per 100 person-year among the non-recovery, the recovery, and the non-AKI group, respectively. After adjustment, the recovery group was more likely to develop long-term de novo malignancy than those without AKI [hazard ratio (HR) 1.44, 95 % confidence interval (CI) 1.02–2.03; p = 0.04], while less likely than those who did not recover (HR 0.66, 95 % CI 0.45–0.98; p = 0.04).
Conclusions
Dialysis-requiring AKI can post a long-term risk of de novo malignancy for those who survive from the initial insult. Even patients who have recovered from dialysis still carry a significantly higher possibility of developing malignancy than those without AKI episode.