Evidence map›Paper›PMID 41675205›Full record

ArticleKidney medicine2026

A Large Deletion With a Large Impact: Homozygous 5,600 bp Deletion of the

Julia Maria Portmann, Katharina Martini, Angela Bahr, Alexander Ritter, Carsten A Wagner, Harald Seeger

Abstract readCase Reports
In one paragraph

Article in Kidney medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

6 authors.

Julia Maria PortmannInstitute of Nephrology, Zurich City Hospital, Zurich, Switzerland.
Katharina MartiniDepartment of Radiology, Hirslanden Clinic Zurich, Octorad AG, Zurich, Switzerland.
Angela BahrInstitute of Medical Genetics, University of Zurich, Schlieren, Switzerland.
Alexander RitterClinic for Nephrology and Transplantation Medicine, HOCH Health Ostschweiz, Cantonal Hospital St. Gallen, St. Gallen, Switzerland.
Carsten A WagnerInstitute of Physiology, University of Zurich, Zurich, Switzerland.
Harald SeegerZurich Kidney Center, University of Zurich, Zurich, Switzerland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hyperphosphatemic familial tumoral calcinosis (HTC) is a rare disease caused by autosomal recessive loss of function variants in the genes encoding fibroblast growth factor 23 (FGF-23), Klotho, or GalNAc-T3. This results in reduced phosphate excretion in the renal proximal tubule, leading to hyperphosphatemia. The clinical manifestations of HTC are mainly periarticular calcifications accompanied by pain and disability, inflammation, and dental problems. Inactive forms or reduced levels of FGF-23 or resistance to the FGF-23/Klotho complex are the main pathophysiologic characteristics underlying this disease. Treatment options to reduce blood phosphate levels have only been studied in case reports and small cohorts, with positive effects from phosphate binders, acetazolamide, anti-inflammatory drugs, probenecid, nicotinamide, and sodium thiosulfate. In this report, we present the case of a 50-year-old woman with a large (at least 5,600 base pair) deletion in the gene encoding for GalNAc-T3 (

Indexed as

chronic kidney diseaseFGF-23hyperphosphatemiaphosphate metabolismtissue calcification

Identifiers

PMID41675205
PMCPMC12887772

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Registered trials

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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.