Risk of mortality and level of serum alanine aminotransferase among community-dwelling elderly in Israel

Hemda Schmilovitz-Weiss, Rachel Gingold-Belfer, Doron Boltin, Yichayaou Beloosesky, Joseph Meyerovitch, Ruth Tor, Nidal Issa, Alon Grossman, Nira Koren-Morag, Avraham Weiss

Research output: Contribution to journalArticlepeer-review

Abstract

Background Serum alanine aminotransferase (ALT) levels below and above the reference range have been found to serve as a marker of liver injury and to predict all-cause mortality. The need to adjust the reference range by age, sex, or other parameters remains unclear. The current reference range of serum ALT in Israel is 0-34 IU/l for women and 0-45 IU/l for men. We aimed to test the applicability of the current reference range values of ALT in specific people - the elderly population. Methods A retrospective design was used. The study population consisted of community-dwelling individuals aged at least 65 years who were tested for serum ALT in 2002 at a large health management organization and followed until the end of December 2012. Data were collected on demographics, laboratory tests, comorbidities, and mortality. Results A total of 49 634 participants (59% women, mean age 83.2±6.3 years) were included. ALT levels between 16 and 25 IU/l were associated with the lowest mortality (hazard ratio=1), and values of less than 16 IU/l and more than 25 IU/l (unadjusted) were associated with higher mortality risk, yielding a U-shaped pattern. Highest mortality rates were also revealed at serum ALT levels more than 56 IU/l and less than 10 IU/l. A significant association of higher mortality risk was noted with lower mean values of hemoglobin, albumin, and total cholesterol, both for patients with lower serum ALT levels (<10 IU/l) and patients with higher serum levels (>56 IU/l). Conclusion Very low and very high levels of serum ALT within the current reference range are associated with an increased risk of death in community-dwelling individuals of at least 65 years old.

Original languageEnglish
Pages (from-to)1428-1433
Number of pages6
JournalEuropean Journal of Gastroenterology and Hepatology
Volume30
Issue number12
DOIs
StatePublished - 1 Dec 2018

Keywords

  • elderly
  • mortality
  • normal range
  • serum alanine aminotransferase

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