Evidence map›Paper›PMID 41963849›Full record

ArticleBMC pediatrics2026

Minigene-based splicing analysis uncovers pathogenic splice-altering effects of PAX2.

Dongxuan Chi, Ke Xu, Yali Ren, Jie Ding, Fang Wang

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

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1 · What the graph read from it

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

5 authors.

Dongxuan Chi *Department of Pediatrics, Children's Medical Center, Peking University First Hospital, Beijing, China.
Ke Xu *Department of Pediatrics, Children's Medical Center, Peking University First Hospital, Beijing, China.
Yali RenLaboratory of Electron Microscopy, Pathological Center, Peking University First Hospital, Beijing, China.
Jie DingDepartment of Pediatrics, Children's Medical Center, Peking University First Hospital, Beijing, China. djnc_5855@126.com.
Fang WangDepartment of Pediatrics, Children's Medical Center, Peking University First Hospital, Beijing, China. wangfangped@163.com.

Funding

National High Level Hospital Clinical Research Funding (High Quality Clinical Research Project of Peking University First Hospital 2023 HQ02National Key Research and Development Program of China 2022YFC2703603
6 · The paper itself

Abstract

backgroundMissense variants in disease-associated genes cause aberrant pre-mRNA splicing, carrying profound implications for molecular diagnostics, pathogenic mechanism elucidation, and personalized therapy development. The distinct genotype-phenotype correlation observed in PAX2-related disorders underscores the need to evaluate how identified PAX2 gene variants impact pre-mRNA splicing. This study aimed to investigate the effects of PAX2 missense variants localized to the first or last nucleotides of an exon on pre-mRNA splicing.

methodsFour PAX2 variants located at the last nucleotide of exons [NM_000278.5:c.212G > A (p.Arg71Lys), c.212G > T (p.Arg71Met), c.212G > C (p.Arg71Thr), and c.919G > A (p.Gly307Ser)] obtained from the Human Gene Mutation Database, along with one variant identified in our cohort [c.427G > C (p.Val143Leu)], were analyzed. A minigene splicing assay was performed to evaluate their functional effects on pre-mRNA splicing. Comprehensive clinical data were collected from the patient harboring the c.427G > C variant.

resultsThree bioinformatic prediction tools indicated that aforementioned five candidate variants were likely to affect RNA splicing. The in vitro minigene assay demonstrated that all these variants consistently induced the skipping of target exons. For the patient with the PAX2 c.427G > C variant, renal dysfunction was observed and postulated to be linked to renal hypoplasia; concomitantly, the patient presented with proteinuria, a complication primarily ascribed to obesity-related focal segmental glomerulosclerosis. Following three years of clinical management, the patient achieved weight normalization, accompanied by stable renal function and proteinuria.

conclusionsTranscript-level RNA analysis reclassified PAX2 missense variants located at the last nucleotide of exons as splice-altering variants, which highlights the indispensable role of transcript-level assessment in characterizing exonic point variants of disease-causing genes to advance pathogenic mechanism research and personalized therapy.

Indexed as

Mutation, MissensePAX2 Transcription FactorRNA SplicingVesico-Ureteral RefluxExonsFemaleHumansMaleRNA PrecursorsPAX2 protein, humanPAX2 Transcription FactorRNA PrecursorsExon variantsMinigene assayPAX2pre-mRNA splicing

Identifiers

PMID41963849
PMCPMC13196236

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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.