Evidence mapPaperPMID 34747516Full record

Trial reportJournal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research2022

Cholecalciferol Supplementation Attenuates Bone Loss in Incident Kidney Transplant Recipients: A Prespecified Secondary Endpoint Analysis of a Randomized Controlled Trial.

Makoto Tsujita, Yohei Doi, Yoshitsugu Obi, Takayuki Hamano, Toshihide Tomosugi, Kenta Futamura, Manabu Okada, Takahisa Hiramitsu, Norihiko Goto, Yoshitaka Isaka and 3 more

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 4 pooled it
0.8field-weighted citation impact, top 26% 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

15 citing papers in PubMed, 4 syntheses or guidelines pooled it, 23 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Calcitriol supplementation after kidney transplantation: results of a double-blinded, randomized, placebo-controlled trial.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2025
    Trial
  6. Review
  7. Article
  8. Article
  9. Article
  10. The role of nutritional vitamin D in chronic kidney disease-mineral and bone disorder in children and adults with chronic kidney disease, on dialysis, and after kidney transplantation-a European consensus statement.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2025
    Article
  11. Vitamin D: are all compounds equal?Clinical kidney journal · 2025
    Article
  12. Article
  13. Review
  14. Article
  15. 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

13 authors at 6 institutions in 2 countries.

Makoto Tsujita *Department of Transplant Nephrology and Surgery, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital, Nagoya, Japan.ORCID 0000-0001-6927-6353
Yohei Doi *Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Japan.ORCID 0000-0002-5165-291X
Yoshitsugu ObiDivision of Nephrology, University of Tennessee Health Science Center, Memphis, TN, USA.ORCID 0000-0001-7032-4383
Takayuki HamanoDepartment of Nephrology, Osaka University Graduate School of Medicine, Suita, Japan.ORCID 0000-0002-2100-9106
Toshihide TomosugiDepartment of Transplant Nephrology and Surgery, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital, Nagoya, Japan.
Kenta FutamuraDepartment of Transplant Nephrology and Surgery, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital, Nagoya, Japan.
Manabu OkadaDepartment of Transplant Nephrology and Surgery, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital, Nagoya, Japan.ORCID 0000-0002-8446-7841
Takahisa HiramitsuDepartment of Transplant Nephrology and Surgery, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital, Nagoya, Japan.
Norihiko GotoDepartment of Transplant Nephrology and Surgery, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital, Nagoya, Japan.ORCID 0000-0003-4931-3203
Yoshitaka IsakaDepartment of Nephrology, Osaka University Graduate School of Medicine, Suita, Japan.
Asami TakedaDepartment of Nephrology, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital, Nagoya, Japan.
Shunji NarumiDepartment of Transplant Nephrology and Surgery, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital, Nagoya, Japan.
Yoshihiko WataraiDepartment of Transplant Nephrology and Surgery, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital, Nagoya, Japan.
Japanese Red Cross Nagoya Daini Hospital · JPNagoya City University · JPNagoya Memorial Hospital · JPThe University of Osaka · JPUniversity of Tennessee Health Science Center · USZero to Three · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Vitamin D deficiency, persistent hyperparathyroidism, and bone loss are common after kidney transplantation (KTx). However, limited evidence exists regarding the effects of cholecalciferol supplementation on parathyroid hormone (PTH) and bone loss after KTx. In this prespecified secondary endpoint analysis of a randomized controlled trial, we evaluated changes in PTH, bone metabolic markers, and bone mineral density (BMD). At 1 month post-transplant, we randomized 193 patients to an 11-month intervention with cholecalciferol (4000 IU/d) or placebo. The median baseline 25-hydroxyvitamin D (25[OH]D) level was 10 ng/mL and 44% of participants had osteopenia or osteoporosis. At the end of the study, the median 25(OH)D level was increased to 40 ng/mL in the cholecalciferol group and substantially unchanged in the placebo group. Compared with placebo, cholecalciferol significantly reduced whole PTH concentrations (between-group difference of -15%; 95% confidence interval [CI] -25 to -3), with greater treatment effects in subgroups with lower 25(OH)D, lower serum calcium, or higher estimated glomerular filtration rate (p

Indexed as

Kidney TransplantationOsteoporosisVitamin D DeficiencyBone DensityCholecalciferolDietary SupplementsHumansParathyroid HormoneVitamin DCholecalciferolParathyroid HormoneVitamin DBONE MINERAL DENSITYCHRONIC KIDNEY DISEASE-MINERAL AND BONE DISORDERKIDNEY TRANSPLANTATIONPARATHYROID HORMONEVITAMIN D

Identifiers

PMID34747516
PMCPMC9298992
OpenAlexW3211894489

What Socratic holds

Textmetadata
LicenceCC BY-NC
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 Socratic graph.