Endometriosis study tracks genes, immunity, and systemic harm

A landmark multi-omics study using data from more than a million women has mapped new genetic mechanisms behind endometriosis, including about 300 genes and several immune-and-inflammation pathways. The work also found endometriosis-linked genetic regions dete

On days when endometriosis pain tightens like a vise, the condition can feel impossibly local—confined to the pelvis, to lesions, to the body parts people imagine when they hear the diagnosis. But a huge genetics and biology study is forcing a different picture.

The research—built from data from more than a million women—shows endometriosis isn’t just a disorder of misplaced tissue. It is tied to immune-system activity. inflammation. and processes that help cells move. offering clues as to why the condition can carry severe effects across the body and last for years. The study also makes a rare move in endometriosis research: it identifies specific genetic regions linked to the condition in people of African ancestry. a group that has historically been under-represented.

Endometriosis is a chronic. often debilitating condition in which tissue similar to the lining of the uterus grows elsewhere in the body. forming lesions. It affects around 10 per cent of women of reproductive age and can cause fatigue, severe pain, and fertility problems. It has also been linked with cardiovascular disease—but the biological mechanisms behind that connection have remained unclear.

To probe those mechanisms, Shefali Setia-Verma and her colleagues used a “multi-omics” approach, combining analyses of genes, proteins, the microbiome, and endometriosis symptoms to build a holistic view. They analyzed data from 14 global biobanks holding information about more than a million women.

The team’s initial analyses identified 58 areas of the genome associated with endometriosis, with 27 previously unrecognised. A deeper analysis then pinpointed 314 genes linked to the development of the condition. Just as important. the study uncovered three genetic regions associated with endometriosis that were detected only by analyzing the genomes of people with African ancestry.

Among the genes most strongly linked to endometriosis, many were involved in the immune system, inflammation, and cell movement. The cell-movement finding is particularly striking, because endometriosis involves cells growing where they shouldn’t. Setia-Verma said, “That is really interesting, because we may be able to find treatments that target that movement.”.

The links with inflammation and the immune system may also help explain why endometriosis can affect more than the lesions themselves. The study points to associations with cardiovascular disease, as well as arthritis and depression. Setia-Verma suggested that for some people, endometriosis may involve systemic inflammation that goes untreated for years. In the UK, she noted that it takes more than nine years, on average, to receive a diagnosis. “Those years of untreated pain and inflammation can lead to many long-term conditions,” she said.

That timing matters because it changes what “treatment” could mean. Endometriosis therapies tend to focus on hormonal pathways, since oestrogen makes lesions grow, bleed, and inflame surrounding tissues. But if inflammation is a driver of symptoms and wider health problems. Setia-Verma said clinicians might also consider targeting inflammatory pathways with existing drugs.

The researchers also identified genes and proteins linked with endometriosis and cardiovascular disease, involving regulation of cholesterol and fats in the blood. “It’s essentially saying that endometriosis may be associated with a higher risk for cardiovascular conditions,” Setia-Verma said.

The study added another layer through the gut microbiome. People with endometriosis tended to have lower levels of Bifidobacteriaceae. bacteria involved in maintaining the gut lining and supporting the immune system. “It gives us an understanding of how endometriosis contributes to broader systemic disease risk beyond reproductive health,” Setia-Verma said. Microbiologists can now look more closely at the role Bifidobacteriaceae play in the condition. potentially treating it as a target for new therapies.

A key strength, Rahmioglu said, is that the study includes participants from multiple ancestry groups. “This matters because the vast majority of endometriosis research has been conducted in populations of European ancestry. limiting how much the findings can be generalised and contributing to broader disparities in women’s health research. ” said Nilufer Rahmioglu at the University of Oxford. “These efforts are an important step towards ensuring that advances in endometriosis research benefit all populations.”.

Even with the breadth of data and the clear biological signals, Rahmioglu cautioned that more work is required. “While studies of this type can identify biological pathways and traits that warrant further investigation. they do not by themselves establish that targeting these pathways will improve outcomes for patients. Further replications are needed.”.

In other words, the study does not deliver a finished treatment plan. But it does redraw the map of endometriosis—from a condition centered on lesions to one that also points toward immune dysfunction. inflammation. gut changes. and cardiovascular risk. For patients who live with symptoms that spill far beyond the pelvis. the science is starting to catch up with what the body has been saying for years.

endometriosis multi-omics genetics inflammation immune system cell movement cardiovascular disease arthritis depression microbiome Bifidobacteriaceae African ancestry biobanks cholesterol fats