Endometriosis Pain: Genes linked to Inflammation Distinguish Symptomatic from Asymptomatic Disease
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ID: 328209
2026
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Abstract
Endometriosis is a multifaceted disease, causing debilitating pelvic pain in some patients, while being completely asymptomatic in others. The pathophysiology of endometriosis pain is not well understood and poorly correlated to stage. We hypothesized that this clinical heterogeneity may be explained by examining differences in gene expression. We performed RNA sequencing of 27 formalin-fixed, paraffin-embedded peritoneal biopsies from 9 symptomatic (Sx) and 10 asymptomatic (ASx) subjects. 890 genes were differentially expressed between Sx and ASx samples. Of these, the most significant including genes involved inflammatory signaling (IL16, IL17RA, JAK3, SMPD3, RELT), cell adhesion (OLFML1, CDON, VCAN), and neuromodulation (SEMA6D, ADRA2C, SLC7A5). Gene Set Enrichment Analysis identified functional enrichment in 22 gene ontology (GO) pathways, of which 7 represented immunologic pathways. Weighted Gene Correlation Network Analysis (WGCNA) identified 11 co-expression modules significantly correlated with symptomaticity, including one module strongly enriched for immunologic/inflammatory functions. Of all molecules identified as associated with pain, IL16 expression also correlated with symptom severity when cases were stratified into mild vs. severe pain based on clinical criteria. These findings suggest that endometriotic lesions of symptomatic subjects are characterized by distinct molecular signatures, including altered expression of inflammatory pathways, highlighting potential mechanisms underlying symptom variability and identifying candidate pathways for future therapeutic interventions.
| Reference Key |
openalex_W7212127390
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| Authors | Ramanaiah Mamillapalli, Howard J. Li, Shant Apelian, Monish Kumar, Sarah F. Wang, Nishita Pondugula, Gabriela de Queiroz Campos, Sumaiya Sayeed, Yonghee Cho, Hugh S Taylor |
| Journal | molecular human reproduction |
| Year | 2026 |
| DOI |
10.1093/molehr/gaag055
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| URL | |
| Keywords | Keywords not found |
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