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Li C, Su T, Chu R, et al. Tubulointerstitial nephritis with uveitis in Chinese adults. Clin J Am Soc Nephrol. 2013;9(1):21-8doi: 10.2215/CJN.02540313.
Li, C., Su, T., Chu, R., Li, X., & Yang, L. (2014). Tubulointerstitial nephritis with uveitis in Chinese adults. Clinical journal of the American Society of Nephrology : CJASN, 9(1), 21-8. https://doi.org/10.2215/CJN.02540313
Li, Cui, et al. "Tubulointerstitial nephritis with uveitis in Chinese adults." Clinical journal of the American Society of Nephrology : CJASN vol. 9,1 (2014): 21-8. doi: https://doi.org/10.2215/CJN.02540313
Li C, Su T, Chu R, Li X, Yang L. Tubulointerstitial nephritis with uveitis in Chinese adults. Clin J Am Soc Nephrol. 2014 Jan;9(1):21-8. doi: 10.2215/CJN.02540313. Epub 2013 Nov 07. PMID: 24202135; PMCID: PMC3878694.
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Clin J Am Soc Nephrol. 2014 Jan;9(1):21-8. doi: 10.2215/CJN.02540313. Epub 2013 Nov 07.

Tubulointerstitial nephritis with uveitis in Chinese adults.

Clinical journal of the American Society of Nephrology : CJASN

Cui Li, Tao Su, Rong Chu, Xiaomei Li, Li Yang

Affiliations

  1. Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China; Peking University Institute of Nephrology, Beijing, China.

PMID: 24202135 PMCID: PMC3878694 DOI: 10.2215/CJN.02540313

Abstract

BACKGROUND AND OBJECTIVES: Tubulointerstitial nephritis and uveitis (TINU) syndrome is considered a rare cause of acute tubulointerstitial nephritis (ATIN) that is usually associated with renal recovery. This study sought to investigate the diagnosis, prognosis, and contributing factors of TINU syndrome using a large cohort of patients with prospective follow-up.

DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: This study included patients with TINU syndrome from a prospective cohort of patients with ATIN from 2007 to 2012. Clinical-pathologic data were collected at biopsy and autoantibodies against modified C-reactive protein (mCRP-Ab) were measured. Serum levels and renal tissue expression of Kreb von den Lunge-6 were also detected. Independent risk factors for poor renal outcome at 12 months and late-onset uveitis were analyzed.

RESULTS: Thirty-one patients (28%) with biopsy-proven ATIN were classified as having TINU syndrome. Of these patients, 18 (58%) developed late-onset uveitis and were misdiagnosed as having drug-induced ATIN at the time of biopsy. An abnormal level of mCRP-Ab was an independent risk factor for late-onset uveitis (odds ratio, 14.7; 95% confidence interval, 3.4 to 64.0). Patients with TINU syndrome and drug-induced ATIN had comparable levels of Kreb von den Lunge-6 in both serum and renal tissues. Ninety-two percent of patients developed stage 3-4 CKD and/or tubular dysfunction by 12 months postbiopsy. Age, serum creatine level, erythrocyte sedimentation rate, and the presence of concomitant thyroid disease or leukocyturia were related to poor renal outcome. Relapse was seen in 36% (11 of 31) of patients and potentiated poor renal outcome.

CONCLUSIONS: The diagnosis of TINU syndrome can be missed in a large fraction of patients with ATIN because uveitis can present well after the onset of tubulointerstitial nephritis. Elevated mCRP-Ab levels may be useful in predicting late-onset uveitis TINU syndrome. Unfortunately, patients with TINU tended to have frequent relapses and most patients had incomplete renal recovery. Long-term follow-up is needed to prevent misdiagnosis and properly manage TINU syndrome.

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