Evidence map›Paper›PMID 33426390›Full record

ArticleKidney international reports2021

A Pilot Trial on the Effect of Levothyroxine on Proteinuria in Patients With Advanced CKD.

Guillermo Navarro Blackaller, Jonathan S Chávez-Iñiguez, Elsa Edith Carreón-Bautista, Francisco Javier González-Torres, Miroslava Villareal-Contreras, José Roberto Barrientos Avalos, Pablo Maggiani Aguilera, Francisco Romo Rosales, Torres Mayorga José Antonio, Juan Alberto Gómez Fregoso and 2 more

Open access · goldAbstract read
In one paragraph

Article in Kidney international reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.0field-weighted citation impact, top 22% 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

10 citing papers in PubMed, 13 citations in OpenAlex.

  1. Review
  2. Levothyroxine treatment for subclinical hypothyroidism and risk of adverse renal outcomes: a population-based cohort study.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2025
    Article
  3. Hormones and Nephrons: Disentangling the Thyroid-Kidney Connection.Clinical journal of the American Society of Nephrology : CJASN · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Kidney disease and thyroid dysfunction: the chicken or egg problem.Pediatric nephrology (Berlin, Germany) · 2022
    Review
  9. Article
  10. Article
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

12 authors at 2 institutions in 1 country.

Guillermo Navarro BlackallerService of Nephrology, Civil Hospital of Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico.
Jonathan S Chávez-IñiguezService of Nephrology, Civil Hospital of Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico.
Elsa Edith Carreón-BautistaUniversity of Guadalajara, University Center of Health Sciences CUCS, Guadalajara, Jalisco, Mexico.
Francisco Javier González-TorresUniversity of Guadalajara, University Center of Health Sciences CUCS, Guadalajara, Jalisco, Mexico.
Miroslava Villareal-ContrerasService of Nephrology, Civil Hospital of Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico.
José Roberto Barrientos AvalosUniversity of Guadalajara, University Center of Health Sciences CUCS, Guadalajara, Jalisco, Mexico.
Pablo Maggiani AguileraService of Nephrology, Civil Hospital of Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico.
Francisco Romo RosalesService of Nephrology, Civil Hospital of Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico.
Torres Mayorga José AntonioService of Nephrology, Civil Hospital of Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico.
Juan Alberto Gómez FregosoService of Nephrology, Civil Hospital of Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico.
Jorge Isaac Michel GonzalezService of Nephrology, Civil Hospital of Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico.
Guillermo García-GarcíaService of Nephrology, Civil Hospital of Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico.
Universidad de Guadalajara · MXHospital Civil de Guadalajara · MX

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThyroid hormones can directly affect kidney function; elevated levels of thyroid-stimulating hormone (TSH) and chronic kidney disease (CKD) are associated with proteinuria, decreased estimated glomerular filtration rate (eGFR), and progression to end-stage renal disease. Our hypothesis is that in patients with CKD and TSH at levels considered to be in the low subclinical hypothyroidism (SCH) range, lowering TSH with levothyroxine (LVX) improves the clinical parameters of renal function.

methodsThis was a double-blind, randomized, pilot clinical trial in patients with proteinuric CKD (eGFR <60 ml/min per 1.73 m

resultsBetween March and November 2018, a total of 163 patients were assessed for eligibility; 119 patients did not meet the inclusion criteria or were excluded, and 32 patients were randomized. The demographic and clinical characteristics of the 2 study groups were essentially not different. Subjects were 66.87 (SD 12.19) years of age, 62.5% were female, 75% were diabetes mellitus, eGFR was 23.55 (±12.91) ml/min per 1.73 m

conclusionThis single-center, randomized, double-blind, placebo-controlled pilot clinical trial in patients with advanced proteinuric CKD who already used ACEIs or ARBs demonstrated that administering LVX to obtain a TSH range close to 2.5 μIU/ml decreased proteinuria and improved eGFR. Future research is needed to confirm our results and to determine whether our findings generalize to patient groups not explicitly enrolled in this small pilot trial.

Indexed as

chronic kidney diseaselevothyroxineTSH

Identifiers

PMID33426390
PMCPMC7783574
OpenAlexW3106912792

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.