Pathogenesis of endometriosis: the genetic/epigenetic theory

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AI-generated summary by gemini-2.5-flash-lite, 2026-06-06

This paper examines the genetic and epigenetic factors contributing to the development and progression of endometriosis, a complex reproductive disorder.

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Abstract

ObjectiveTo study the pathophysiology of endometriosis.DesignOverview of observations on endometriosis.SettingNot applicable.Patient(s)None.Interventions(s)None.Main outcome measure(s)The hypothesis is compatible with all observations.Result(s)Endometriosis, endometrium-like tissue outside the uterus, has a variable macroscopic appearance and a poorly understood natural history. It is a hereditary and heterogeneous disease with many biochemical changes in the lesions, which are clonal in origin. It is associated with pain, infertility, adenomyosis, and changes in the junctional zone, placentation, immunology, plasma, peritoneal fluid, and chronic inflammation of the peritoneal cavity. The Sampson hypothesis of implanted endometrial cells following retrograde menstruation, angiogenic spread, lymphogenic spread, or the metaplasia theory cannot explain all observations if metaplasia is defined as cells with reversible changes and an abnormal behavior/morphology due to the abnormal environment. We propose a polygenetic/polyepigenetic mechanism. The set of genetic and epigenetic incidents transmitted at birth could explain the hereditary aspects, the predisposition, and the endometriosis-associated changes in the endometrium, immunology, and placentation. To develop typical, cystic ovarian or deep endometriosis lesions, a variable series of additional transmissible genetic and epigenetic incidents are required to occur in a cell which may vary from endometrial to stem cells. Subtle lesions are viewed as endometrium in a different environment until additional incidents occur. Typical cystic ovarian or deep endometriosis lesions are heterogeneous and represent three different diseases.Conclusion(s)The genetic epigenetic theory is compatible with all observations on endometriosis. Implications for treatment and prevention are discussed.

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Condition tags

endometriosis

MeSH descriptors

Endometriosis Endometrium Epigenesis, Genetic Animals Endometriosis Endometriosis Endometriosis Endometriosis Endometrium Endometrium Female Genetic Markers Genetic Predisposition to Disease Heredity Humans Phenotype Prognosis Risk Factors

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References (100)

Cited by (50)

Source provenance

europepmc
last seen: 2026-09-16T06:11:32.772430+00:00
openalex
last seen: 2026-06-10T17:14:06.276822+00:00
pubmed
last seen: 2026-05-13T22:19:25.021412+00:00
License: CC0 · commercial use OK