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Nutrition in critical care · How much protein

TARGET Protein randomised trial

Augmented Enteral Protein During Critical Illness

TARGET Protein trial design and results
Design Cluster-randomised crossover clinical trial
Treatment Augmented enteral protein formulation
Control Standard enteral formulation
Population 3397 critically ill patients, median age 61, 64% male
Follow-up 90 days
Primary endpoint Days free of the index hospital and alive at day 90
Result Median days free of the index hospital and alive at day 90 was 62 (IQR 0 to 77) in the augmented protein group, with no meaningful advantage over standard formulation.
Secondary endpoints Mortality, duration of ventilation, ICU length of stay

Augmenting enteral protein during critical illness did not improve number of days free of the index hospital and alive at day 90.

The trial authors, in the published abstract

How it has aged

Concordant with EFFORT Protein and larger. Between them, the case for pushing protein in critical illness has collapsed, and nutrition in the ICU now looks like a supportive measure rather than a therapeutic lever.

Publications

Augmented Enteral Protein During Critical Illness: The TARGET Protein Randomized Clinical Trial

Summers MJ, Chapple LS, Karahalios A, et al. Augmented Enteral Protein During Critical Illness: The TARGET Protein Randomized Clinical Trial. JAMA 2025 Jul 22;334(4):319-328.

  • No advantage in days free of hospital and alive at day 90
  • 3397 patients in a cluster-randomised crossover design