Evidence map›Paper›PMID 27981511›Full record

ReviewEndocrine2017

The emergence of levothyroxine as a treatment for hypothyroidism.

James V Hennessey

Abstract readHistorical ArticleReview
PubMed Publisher
In one paragraph

Review in Endocrine, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 3 pooled it
4.5field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

36 citing papers in PubMed, 3 syntheses or guidelines pooled it, 65 citations in OpenAlex.

  1. Guideline
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Article
  6. Lingual Thyroid: Diagnostic and Therapeutic Insights. A Case ReportEndocrine, metabolic & immune disorders drug targets · 2026
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. An Overview on Different L-Thyroxine (l-TFrontiers in endocrinology · 2022
    Review
  19. Article
  20. Role of thyroid hormone therapy in depressive disorders.Journal of endocrinological investigation · 2021
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

1 author at 1 institution in 1 country.

James V HennesseyHarvard Medical School, Division of Endocrinology, Beth Israel Deaconess Medical Center, 330 Brookline Ave., Gryzmish 619, Boston, 02215, MA, USA. jhenness@bidmc.harvard.edu.
Harvard University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo describe the historical refinements, understanding of physiology and clinical outcomes observed with thyroid hormone replacement strategies.

methodsA Medline search was initiated using the search terms, levothyroxine, thyroid hormone history, levothyroxine mono therapy, thyroid hormone replacement, combination LT4 therapy, levothyroxine Bioequivalence. Pertinent articles of interest were identified by title and where available abstract for further review. Additional references were identified in the course of review of the literature identified.

resultsPhysicians have intervened in cases of thyroid dysfunction for more than two millennia. Ingestion of animal thyroid derived preparations has been long described but only scientifically documented for the last 130 years. Refinements in hormone preparation, pharmaceutical production and regulation continue to this day. The literature provides documentation of physiologic, pathologic and clinical outcomes which have been reported and continuously updated. Recommendations for effective and safe use of these hormones for reversal of patho-physiology associated with hypothyroidism and the relief of symptoms of hypothyroidism has documented a progressive refinement in our understanding of thyroid hormone use. Studies of thyroid hormone metabolism, action and pharmacokinetics have allowed evermore focused recommendations for use in clinical practice. Levothyroxine mono-therapy has emerged as the therapy of choice of all recent major guidelines.

conclusionsThe evolution of thyroid hormone therapies has been significant over an extended period of time. Thyroid hormone replacement is very useful in the treatment of those with hypothyroidism. All of the most recent guidelines of major endocrine societies recommend levothyroxine mono-therapy for first line use in hypothyroidism.

Indexed as

Evidence-Based MedicinePractice Guidelines as TopicPrecision MedicineAnimalsDrug CompoundingDrug InteractionsDrug Therapy, CombinationEndocrinologyHistory, 20th CenturyHistory, 21st CenturyHormone Replacement TherapyHumansHypothyroidismSocieties, ScientificTherapeutic EquivalencyThyroid (USP)Thyroid (USP)ThyroxineLevothyroxineLevothyroxine bioequivalenceLevothyroxine mono therapyThyroid hormone historyThyroid hormone replacement

Identifiers

PMID27981511
OpenAlexW2566552250

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.