Evidence map›Paper›PMID 42374058›Full record

Observational studyScientific reports2026

Association of AQP5 gene variants and mRNA expression with caries severity in a dental practice cohort: a randomized trial.

Janusch Bitter, Daria Pakosch-Nowak, Michael Adamzik, Dominik Ziehe, Jennifer Orlowski, Bjoern Koos, Martin Kunkel, Katharina Rump, Markus Baumann

Abstract readObservational Study
In one paragraph

Observational study in Scientific reports, 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

9 authors.

Janusch BitterZahnarztpraxis Dr. Baumann Sprockhövel, Sprockhövel, Germany.
Daria Pakosch-NowakDepartment of Oral and Maxillofacial Surgery, Knappschaft Kliniken University Hospital Bochum, Ruhr University Bochum, Bochum, Germany.
Michael AdamzikDepartment of Anesthesiology, Intensive Care Medicine and Pain Therapy, Knappschaft Kliniken University Hospital Bochum, Ruhr University Bochum, Bochum, Germany.
Dominik ZieheDepartment of Anesthesiology, Intensive Care Medicine and Pain Therapy, Knappschaft Kliniken University Hospital Bochum, Ruhr University Bochum, Bochum, Germany.
Jennifer OrlowskiDepartment of Anesthesiology, Intensive Care Medicine and Pain Therapy, Knappschaft Kliniken University Hospital Bochum, Ruhr University Bochum, Bochum, Germany.
Bjoern KoosDepartment of Anesthesiology, Intensive Care Medicine and Pain Therapy, Knappschaft Kliniken University Hospital Bochum, Ruhr University Bochum, Bochum, Germany.
Martin KunkelDepartment of Oral and Maxillofacial Surgery, Knappschaft Kliniken University Hospital Bochum, Ruhr University Bochum, Bochum, Germany.
Katharina Rump *Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, Knappschaft Kliniken University Hospital Bochum, Ruhr University Bochum, Bochum, Germany. Katharina.k.rump@rub.de.ORCID 0000-0003-2220-519X
Markus Baumann *Zahnarztpraxis Dr. Baumann Sprockhövel, Sprockhövel, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Aquaporin 5 (AQP5) is crucial for salivary secretion, composition and enamel mineralization. Genetic variations in AQP5 may influence susceptibility to dental diseases such as caries. This study investigated the association between AQP5 single nucleotide polymorphisms (SNPs), AQP5 mRNA expression, and caries severity in a dental practice cohort. A total of 246 patients were enrolled. Caries experience was assessed using the decayed, missing, and filled (DMF) index, and salivary AQP5 mRNA expression was quantified by RT-qPCR. Genotyping included rs2878771, rs296763, rs3736309, and rs3759129. Statistical analyses comprised Chi-square testing, ROC analysis with Youden Index determination, and binary logistic regression adjusted for age and sex. The A allele of rs3736309 was associated with an increased risk of severe caries, particularly in patients over 60 years of age. AQP5 mRNA expression was higher in individuals with severe caries and in carriers of the C allele of rs2878771. ROC analysis identified an AQP5 expression cut-off (0.11274) that discriminated between severe and non-severe caries (AUC = 0.578, p = 0.048). Logistic regression confirmed AQP5 expression as an independent predictor of severe caries (p = 0.005). AQP5 expression and genetic variation appear to contribute to caries susceptibility in an age-dependent manner with moderate effects. The intronic variant rs3736309 was associated with caries severity. The biological mechanisms underlying this association remain unclear and require functional investigation. These findings support a potential role of AQP5 as an exploratory biomarker candidate for caries risk, particularly in elderly individuals.Trial registration: German Clinical Trial Registry No. DRKS00032425, date of registration: 2023-08-16.

Indexed as

Aquaporin 5Dental CariesPolymorphism, Single NucleotideRNA, MessengerAdultAllelesCohort StudiesFemaleGenetic Predisposition to DiseaseGenotypeHumansMaleMiddle AgedSalivaSeverity of Illness IndexAQP5 protein, humanAquaporin 5RNA, MessengerAQP5CariesGenetic variantsmRNASaliva

Identifiers

PMID42374058
PMCPMC13315598

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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.