Evidence map›Paper›PMID 41983772›Full record

ArticleTranslational vision science & technology2026

Cross-Tissue Transcriptome-Wide Association Study and TWAS-FOCUS Fine-Mapping Reveal Novel Susceptibility Genes for Primary Open-Angle Glaucoma.

Zheng Pan, Ke Liu, Bing Jiang, Chuning Dong

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Article in Translational vision science & technology, 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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4 · The record

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5 · Who and what money

Authors and funding

4 authors.

Zheng PanDepartment of Ophthalmology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, People's Republic of China.
Ke LiuDepartment of Ophthalmology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, People's Republic of China.
Bing JiangDepartment of Ophthalmology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, People's Republic of China.
Chuning DongDepartment of Nuclear Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan, People's Republic of China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: Primary open-angle glaucoma (POAG) is a common eye disorder that can lead to irreversible vision loss. Although genome-wide association studies (GWAS) have identified several genetic loci associated with POAG risk, the specific causative genes and mechanisms remain unclear. Methods: This study utilized the Unified Test for Molecular Signature (UTMOST) for cross-tissue analysis, along with Functional Summary-based Imputation (FUSION) and Fine-mapping of Causal Gene Sets (FOCUS) for single-tissue validation, analyzing a POAG GWAS dataset comprising 192,702 subjects (15,229 cases and 177,473 controls) in conjunction with Genotype-Tissue Expression Project (GTEx) version 8 eQTL files. Additionally, multi-marker analysis of genomic annotation (MAGMA), Mendelian randomization, and colocalization analysis were used to further validate candidate genes. Results: The cross-tissue transcriptome-wide association study (TWAS) analysis identified 33 significant genes associated with POAG, whereas single-tissue validation revealed 18 significant genes. Conditional and Joint (COJO) analysis consistently identified nine candidate genes, with AFAP1 showing a significant causal relationship with POAG (P < 0.05), whereas FMNL2 did not (P > 0.05). Colocalization analysis indicated strong colocalization of AFAP1 with POAG in skeletal muscle and breast tissue, and significant colocalization of FMNL2 in the terminal ileum. Conclusions: This comprehensive analysis identified AFAP1 and FMNL2 as key susceptibility genes for POAG, highlighting FMNL2's regulatory role in aqueous humor outflow pathways. These findings provide new insights into the genetic architecture of POAG and potential targets for future research and therapeutic interventions. Translational Relevance: This study bridges basic genomics and clinical care by identifying and validating AFAP1 and FMNL2 as novel susceptibility genes for POAG, offering potential targets for early diagnosis and therapeutic intervention.

Indexed as

Genetic Predisposition to DiseaseGenome-Wide Association StudyGlaucoma, Open-AngleTranscriptomeChromosome MappingHumansPolymorphism, Single NucleotideQuantitative Trait Loci

Identifiers

PMID41983772
PMCPMC13094785

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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.