Low ALT blood levels predict long-term all-cause mortality among adults. A historical prospective cohort study

E. Ramaty*, E. Maor, N. Peltz-Sinvani, A. Brom, A. Grinfeld, S. Kivity, S. Segev, Y. Sidi, T. Kessler, B. A. Sela, G. Segal

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

53 Scopus citations

Abstract

Background Increased blood levels of alanine amino transferase (ALT, also known as SGPT; serum glutamic pyruvic transaminase) serve as a marker of liver injury by various mechanisms. Less is known about the clinical implications associated with low-normal ALT levels. Previous studies showed low ALT levels to be associated with poor long-term outcomes among elderlies, serving as a biomarker for increased incidence of frailty and subsequent risk of mortality. However, it has not been determined yet whether low-normal ALT values might be predictive of frailty and mortality in younger, middle-aged adults. 2014 European Federation of Internal Medicine. Published by Elsevier B.V. All rights reserved.

Methods We conducted a historical prospective cohort analysis.

Results A total of 23,506 adults with ALT levels within the normal range, at the mean age of 48 ± 11 years, participating in an annual screening program for preventive medicine, were followed-up for a median period of 8.5 years during which 638 died. Low-normal ALT values (serum ALT activity < 17 IU/L) were found to be predictive for increased risk of all-cause mortality (HR = 1.6; 95% CI 1.34-1.92; p < 0.001). Statistically significant correlation was demonstrated even after applying a multifactorial model correction for age, gender, eGFR, low albumin, arterial hypertension, diabetes mellitus and ischemic heart disease.

Conclusions We suggest that low-normal ALT values may serve as an independent predictive marker for increased long-term mortality in middle-aged adults.

Original languageEnglish
Pages (from-to)919-921
Number of pages3
JournalEuropean Journal of Internal Medicine
Volume25
Issue number10
DOIs
StatePublished - 1 Dec 2014
Externally publishedYes

Keywords

  • ALT
  • Frailty
  • Mortality
  • SGPT
  • Screening
  • Survival

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