ReviewJournal of endocrinological investigation2021
An update on non-thyroidal illness syndrome.
Review in Journal of endocrinological investigation, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 116 papers, 3 of them syntheses that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
116 citing papers in PubMed, 3 syntheses or guidelines pooled it, 185 citations in OpenAlex.
- Non-thyroidal illness syndrome and isolated low triiodothyronine as prognostic markers in acute illness: a systematic review and meta-analysis.Endocrine · 2026Pooled it
- The prevalence of thyroid disorders in COVID-19 patients: a systematic review and meta-analysis.BMC endocrine disorders · 2024Pooled it
- Association of thyroid hormones and thyroid-stimulating hormone with mortality in adults admitted to the intensive care unit: A systematic review and meta-analysis.Journal of the Chinese Medical Association : JCMA · 2022Pooled it
- Baseline TSH within reference range and incident thyroid dysfunction in cancer patients: a retrospective cohort study.Hormones (Athens, Greece) · 2026Article
- Transient Association Between Elevated NSE and Reduced fT3 Levels Following Mild Traumatic Brain Injury: A 12-Month Prospective Pilot Study.Journal of clinical medicine · 2026Article
- Post-COVID-19 Thyroid Dysfunction and Autoimmune Ultrasound Changes: A 12-Month Prospective Cohort Study.Medicina (Kaunas, Lithuania) · 2026Article
- Interplay Between Infectious Diseases and the Endocrine System: An Overview and Clinical Insights.Endocrinology, diabetes & metabolism · 2026Review
- HPT Axis Dysregulation in Mood and Anxiety Disorders: The Clinical Utility of Routine Hormonal Dosing in Psychiatric In-Patients.Diseases (Basel, Switzerland) · 2026Article
- Non-thyroidal Illness Syndrome and Clinical Outcomes in Critically Ill ICU Patients: A Prospective Cohort Study.Cureus · 2026Article
- Prognostic Significance of Dynamic Free T3 Changes in Critically Ill Patients.Clinics and practice · 2026Article
- Longitudinal Changes in Thyroid Hormones and Serum Albumin Following CABG, AVR, and PCI: An Exploratory Electronic Medical Record Study.Medical sciences (Basel, Switzerland) · 2026Article
- Endocrine Sequelae of Mild Traumatic Brain Injury in Patients Admitted to the Emergency Department: A 12-Month Study.Diagnostics (Basel, Switzerland) · 2026Article
- Low fT3 Syndrome, Dialysis Inadequacy, and Death Occurrence in Hemodialysis Patients: Evidence of a Vicious Circle from a Prospective Bi-Center Observational Study.Journal of clinical medicine · 2026Article
- The Prognostic Significance of Low-Triiodothyronine Syndrome in Aneurysmal Subarachnoid Hemorrhage.Biomedicines · 2026Article
- The association of the serum free triiodothyronine to free thyroxine ratio with contrast-induced nephropathy and long-term outcomes in elective percutaneous coronary intervention: a retrospective study.BMC cardiovascular disorders · 2026Article
- Non-thyroidal illness syndrome predicts poor prognosis in hepatocellular carcinoma patients treated with atezolizumab and bevacizumab.Cancer immunology, immunotherapy : CII · 2026Article
- Thyroid Function and All-cause Mortality in the Context of Multimorbidity: Results From 2 Population-based Studies.The Journal of clinical endocrinology and metabolism · 2026Article
- Acute endocrine responses to snouted cobra (Naja annulifera) and African puffadder (Bitis arietans) envenomation in dogs.Journal of veterinary internal medicine · 2026Article
- Article
- Euthyroid Sick Syndrome Precipitated By Rapid Weight Loss Following Semaglutide Initiation: A Case Report.Clinical medicine insights. Endocrinology and diabetes · 2026Article
56 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The non-thyroidal illness syndrome (NTIS) was first reported in the 1970s as a remarkable ensemble of changes in serum TH (TH) concentrations occurring in probably any severe illness. Ever since, NTIS has remained an intriguing phenomenon not only because of the robustness of the decrease in serum triiodothyronine (T3), but also by its clear correlation with morbidity and mortality. In recent years, it has become clear that (parenteral) feeding in patients with critical illness should be taken into account as a major determinant not only of NTIS but also of clinical outcome. Moreover, both experimental animal and clinical studies have shown that tissue TH concentrations during NTIS do not necessarily reflect serum low TH concentrations and may decrease, remain unaltered, or even increase according to the organ and type of illness studied. These differential changes now have a solid basis in molecular studies on organ-specific TH transporters, receptors and deiodinases. Finally, the role of inflammatory pathways in these non-systemic changes has begun to be clarified. A fascinating role for TH metabolism in innate immune cells, including neutrophils and monocytes/macrophages, was reported in recent years, but there is no evidence at this early stage that this may be a determinant of susceptibility to infections. Although endocrinologists have been tempted to correct NTIS by TH supplementation, there is at present insufficient evidence that this is beneficial. Thus, there is a clear need for adequately powered randomized clinical trials (RCT) with clinically relevant endpoints to fill this knowledge gap.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.