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Original Article
Differences in nephrotoxicity risk and renal effects among anti-viral therapies against hepatitis B
S. Koklu1,*,
M. T. Gulsen2,
Y. Tuna3,
H. Koklu4,
O. Yuksel4,
M. Demir5,
R. Guner4,
Z. Dogan4,
M. Kucukazman4,
O. K. Poyrazoglu6,
M. Biyik7,
N. A. Ozturk8,
T. Aydogan9,
S. Coban4,
O. Kocaman10,
F. Sapmaz11,
S. H. Gokturk7,
C. Karaca10,
A. Demirezer4,
A. Tanoglu10,
B. Yildirim12,
A. Altinbas4,
B. M. Atak13,
A. M. Cosar14 and
E. Alkan3
Article first published online: 4 DEC 2014
DOI: 10.1111/apt.13036
© 2014 John Wiley & Sons Ltd
Issue
Alimentary Pharmacology & Therapeutics
Volume 41, Issue 3, pages 310–319, February 2015
Alimentary Pharmacology & Therapeutics, 41: 310–319. doi: 10.1111/apt.13036
Author Information
1 Department of Gastroenterology, Hacettepe University School of Medicine, Ankara, Turkey
2 Gaziantep, Turkey
3 Antalya, Turkey
4 Ankara, Turkey
5 Hatay, Turkey
6 Kayseri, Turkey
7 Konya, Turkey
8 Adana, Turkey
9 Sanliurfa, Turkey
10 Istanbul, Turkey
11 Kirikkale, Turkey
12 Samsun, Turkey
13 Isparta, Turkey
14 Trabzon, Turkey
* Correspondence to:
Prof. Dr S. Köklü, Bağlarbaşı mahallesi, Duman sokak, 55/11, 06300, Keçiören, Ankara, Turkey.
E-mail: [email protected]
This article was accepted for publication after full peer-review.
Publication History
Issue published online: 9 JAN 2015
Article first published online: 4 DEC 2014
Manuscript Revised: 6 NOV 2014
Manuscript Accepted: 6 NOV 2014
Manuscript Revised: 3 NOV 2014
Manuscript Revised: 6 OCT 2014
Manuscript Revised: 3 SEP 2014
Manuscript Received: 3 AUG 2014
Summary
Background
Results are conflicting with respect to the renal effects of anti-viral agents used for hepatitis B virus infection.
Aim
To compare short and long-term renal effects in real-life settings and to determine risk factors for renal impairment during treatment.
Methods
2221 treatment-naïve patients were enrolled. Among these, 895 (302 lamivudine, 27 telbivudine, 282 entecavir, 273 tenofovir and 11 adefovir initiated patients) had ‘repeated measures’ of creatinine (baseline, 1st, 6th, 12th and 24th month of treatment). Telbivudine and adefovir groups were excluded from further analysis because of the low number of patients. We calculated the glomerular filtration rate (GFR) using the Modification of Diet in Renal Disease (MDRD) formula at each time point. Hypophosphataemia was also recorded. Risk factors for renal impairment were analysed.
Results
Tenofovir caused a decline in GFR at each time point when compared to baseline levels. However, lamivudine and entecavir did not change GFR. GFR-shifting from ≥90 to 60–89 mL/min/1.73 m2 was comparable among groups. The proportion of patients whose baseline creatinine increased more than 25% was comparable among all anti-virals. GFR showed a decline in patients who switched from entecavir to tenofovir. One patient with compensated cirrhosis needed to change from tenofovir because of renal safety. Seven and three patients developed transient hypophosphataemia in the tenofovir and lamivudine groups, respectively.
Conclusions
Although tenofovir caused a decline in GFR, differences between the anti-viral agents do not appear to be so impressive. In patients with and without renal risk factors at baseline, there is no impact of anti-virals, including tenofovir.
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