Liver Fibrosis, but no Other Histologic Features, Associates with Long-term Outcomes of Patients With Nonalcoholic Fatty Liver Disease

By P. Angulo, D. Kleiner, S. Dam-Larsen, L. Adams, E. Bjornsson, P. Charatcharoenwitthaya, P. Mills, Jill C. Keach, H. Lafferty, Alisha C. Stahler and 2 more. Gastroenterology, 2015

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Background & Aim Histologic analysis of liver biopsies allows for grading and staging of nonalcoholic fatty liver disease (NAFLD). We performed a longitudinal study to investigate the long-term prognostic relevance of histologic features for patients with NAFLD. Methods We performed a retrospective analysis of 619 patients diagnosed with NAFLD from 1975 through 2005 at medical centers in the United States, Europe, and Thailand. Patients underwent laboratory and biopsy analyses, and were examined every 3–12 months after their diagnosis. Outcomes analyzed were overall mortality, liver transplantation, and liver-related events. Cumulative outcomes were compared by log-rank analysis. Cox proportional-hazards regression was used to estimate adjusted hazard ratios (HR). Time at risk was determined from the date of liver biopsy to the date of outcome or last follow-up examination. Results Over a median follow-up of 12.6 years (range 0.3–35.1), 193 of the patients (33.2%) died or underwent liver transplantation. Features of liver biopsies significantly associated with death or liver transplantation included fibrosis stage 1 (HR, 1.88; 95% CI, 1.28, 2.77), stage 2 (HR, 2.89; 95% CI, 1.93, 4.33), stage 3 (HR, 3.76; 95% CI, 2.40, 5.89), and stage 4 (HR, 10.9; 95% CI, 6.06, 19.62) compared with stage 0, as well as age (HR, 1.07; 95% CI, 1.05, 1.08), diabetes (HR, 1.61; 95% CI, 1.13, 2.30), current smoking (HR, 2.62; 95% CI, 1.67, 4.10) and statin use (HR, 0.32; 95% CI, 0.14, 0.70). Twenty-six patients (4.2%) developed liver-related events; fibrosis stage 3 (HR 14.2 [95% CI 3.38, 59.68]) and stage 4 (HR 51.5 [95% CI 9.87, 269.2]) compared to stage 0, were significantly associated with the events. Patients with fibrosis, regardless of steatohepatitis or NAFLD activity score, had shorter survival times than patients without fibrosis. Conclusions In a longitudinal study of patients with NAFLD, fibrosis stage, but no other histologic features of steatohepatitis, were independently associated with long-term overall mortality, liver transplantation, and liver-related events.

Subfields: Endocrinology, Diabetes and Metabolism, Epidemiology, Hepatology

View Paper: https://www.semanticscholar.org/paper/387c138b3c9c351af6516ab0dc7cfc46a5bbfa5a

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In Endocrinology, Diabetes and Metabolism

  1. Z. Younossi
  2. G. Targher
  3. M. Rinella
  4. R. Loomba
  5. Q. Anstee
  6. K. Cusi
  7. A. Lonardo
  8. A. Sanyal

In Epidemiology

  1. Z. Younossi
  2. M. Rinella
  3. G. Targher
  4. K. Cusi
  5. A. Sanyal
  6. R. Loomba
  7. Q. Anstee
  8. E. Brunt

In Hepatology

  1. Z. Younossi
  2. M. Rinella
  3. R. Loomba
  4. K. Cusi
  5. A. Sanyal
  6. E. Brunt
  7. G. Targher
  8. A. Lonardo

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