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Endometriosis Research

Advancing the science behind endometriosis care, pushing the boundaries on what's possible.

Pushing Boundaries

Explore Our Current Research

From translational research to clinical trials—we’re pushing the boundaries of what’s possible. Our current research includes a phased translational study looking at detecting cfmiRS (cell-free microRNA) markers in patients diagnosed with endometriosis. 


Our phased translational research protocol has strong implications on the following: 

3D visualization of biomarkers, cells, genetic markers

Non-invasive

Biomarker-Based Diagnosis

Current diagnostic methods for endometriosis are invasive and often delayed. cfmiRs offer a non-invasive liquid biopsy (i.e. blood test) alternative, with studies already showing their ability to differentiate endometriosis patients from controls with high accuracy. Blood-based cfmiR panels could allow earlier detection and reduce the reliance on surgery to make a diagnosis or at least point towards those who are most likely to benefit from surgical diagnosis and excision. Because cfmiRs reflect disease-specific molecular changes, their use could standardize early, non-invasive screening strategies.  


Of the 20 miRNAs detected in endometriosis tissues by our assay, eight have been previously shown as potential cfmiRs for endometriosis.  Thus, we are adding to the current knowledge base and further exploring the accuracy (ROC curve sensitivity and specificity) of potential for blood testing. 

Decades of Inquiry, Innovation, & Clinical Scholarship

Scholarly Legacy & Research Contributions

At the Lotus Endometriosis Institute, we believe that deep scientific grounding strengthens everything we do. The publications below reflect a long and sustained commitment to medical research — spanning surgical methods, integrative therapies, oncology, and beyond — and demonstrate that our team, including Dr. Vasilev, has actively contributed to the broader body of biomedical knowledge. While not all of these works are directly about endometriosis, they underscore consistent rigor, interdisciplinary curiosity, and decades of evolving expertise. This is not a complete list, but a showcase of growth, influence, and credibility across medicine. Dr. Vasilev's research profile on Google Scholar and ResearchGate for more publications.

  1. Minimally invasive cytoreductive surgery in advanced ovarian cancer: A nonselected consecutive series of robotic-assisted cases

    Natalie Shammas, Rosa Avila, Christopher Khatchadourian, Erland Laurence Spencer-Smith, Lisa Stern and Steven Vasilev
    Clin J Obstet Gynecol. 2023; 6: 032-037. DOI: 10.29328/journal.cjog.1001126
  2. MiR-181a targets STING to drive PARP inhibitor resistance in BRCA- mutated triple-negative breast cancer and ovarian cancer

    Bustos MA, Yokoe T, Shoji Y, Kobayashi Y, Mizuno S, Murakami T, Zhang X, Sekhar SC, Kim S, Ryu S, Knarr M, Vasilev SA, DiFeo A, Drapkin R, Hoon DSB.
    Cell Biosci. 2023 Nov 6;13(1):200. doi: 10.1186/s13578-023-01151-y. PMID: 37932806; PMCID: PMC10626784.
  3. Role of adjuvant chemotherapy in patients with early stage uterine papillary serous cancer

    Mahdavi A, Tajalli TR, Dalmar A, Vasilev SA, Lentz SE, Berman ML.
    Int J Gynecol Cancer. 2011 Nov;21(8):1436-40. doi: 10.1097/IGC.0b013e31822e7588. PMID: 21997174.
  4. Significance of comprehensive surgical staging in non-invasive papillary serous carcinoma of the endometrium.

    Chan JK, Loizzi V, Youssef M, Osann K, Rutgers J, Vasilev SA, Berman ML.
    Gynecologic Oncology. 2003 Jul; 90(1): 181-185. doi:10.1016/S0090-8258(03)00195-1
  5. Long-term results of whole pelvic radiotherapy following limited surgery in stage I and IIA endometrial adenocarcinoma.

    Vasilev SA, Paulson RJ, DiSaia PJ, Berman ML.
    Gynecologic Oncology. 1994 Jun; 53(3): 348-352. doi:10.1006/gyno.1994.1141
  6. Pelvic radiation improves local control after hysterectomy for uterine leiomyosarcoma: a 20-year experience

    Mahdavi A, Monk BJ, Ragazzo J, Hunter MI, Lentz SE, Vasilev SA, Tewari KS.
    Int J Gynecol Cancer. 2009 Aug;19(6):1080-4. doi: 10.1111/IGC.0b013e3181acae50. PMID: 19820372.
  7. Paying for prevention standardizing the measurement of the value of health care interventions

    Steven A Vasilev
    Obstet Gynecol Clin North Am. 2002 Dec;29(4):613-43, v. doi: 10.1016/s0889-8545(02)00022-0. PMID: 12509088.

Pushing Endometriosis Care to the Next Level

We’re not just conducting research—we’re redefining the frontiers of endometriosis science. From biomarker discovery to innovative surgical training, our work is designed to challenge outdated assumptions and shape a new era of care.

The girl patient is lying in the MRI and waiting for a scan.

Common Questions

Why do endometriosis studies sometimes disagree?

Endometriosis isn’t one uniform condition, so study results can vary depending on which lesion types and locations are included, how advanced disease is, and whether participants have had prior hormonal treatment or surgery. Many studies also rely on small or highly selected groups, which can make findings look stronger (or weaker) than they are in real-world patients.


On top of that, research teams may use different diagnostic standards, define outcomes differently (pain scores vs quality of life vs fertility), and follow patients for different lengths of time—so they’re not always measuring the same thing. When we interpret research with patients, we look for results that hold up across larger, more diverse groups and, when possible, well-designed randomized trials, because that’s more likely to reflect what you can expect in care.

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What new endometriosis treatments are being studied?

Researchers are studying new, non-hormonal treatments for endometriosis that aim to treat the disease biology itself—not just suppress cycles. Current trials include medications designed to reduce inflammation, calm nerve sensitization (pain signaling), limit new blood vessel growth (angiogenesis), and address scarring and fibrosis.


There’s also growing interest in how the microbiome and immune system may influence symptoms and progression, which could shape future therapies. While a few approaches look promising, most are still experimental and not widely available outside of clinical trials. If you’re curious about what’s in the pipeline and what may be appropriate for your situation, our team can help you understand where emerging therapies fit alongside proven options like expert excision surgery and individualized medical management.

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Should I join an endometriosis clinical trial?

A well-designed clinical trial can be a good fit if you want access to an investigational therapy and are comfortable contributing to research that may improve endometriosis care. At the same time, trials often involve randomization (and sometimes placebo), stricter protocols, additional visits, and rules about what other treatments you can use during the study.


Before enrolling, it’s important to understand exactly what the study requires and how it could affect your overall plan—especially if you’re considering surgery, trying to preserve or pursue fertility, or managing symptoms with medications. Our team can help you weigh the potential benefits against the time commitment, risks, and likelihood that the trial will answer the questions that matter most for your case, and help you think through what to ask the study coordinators before you decide.

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Can biomarkers guide treatment or track response in endometriosis?

Biomarkers are promising, but they’re not yet a reliable way to choose a specific endometriosis treatment or to measure, in real time, how well a therapy is working. In research settings, multi-marker panels may eventually help stratify inflammation or disease activity and support more individualized decisions about hormonal suppression, pain management strategies, or the timing of excision.


Right now, the most dependable way we monitor response is still how you feel and function over time, paired with clinical evaluation and imaging when appropriate. In select situations—such as monitoring a large endometrioma—your team may follow a lab like CA-125 as one piece of the picture, but it’s not specific enough to use alone. If you’re interested in whether biomarker testing could add value in your case, our team can walk you through what’s available, what it can and can’t tell us, and how we’d use it alongside symptoms and imaging.

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How do I access endometriosis trials and judge research hype?

A safe way to start is by using reputable trial registries (such as ClinicalTrials.gov) to confirm a study is real and to review the basics: the trial phase, what treatment is being tested, the primary outcomes, and the eligibility criteria. We also encourage you to look closely at what participation actually involves—extra visits, imaging, biopsies, medication changes, or washout periods—so you can weigh the time and symptom impact alongside potential benefit. Many trials do cover study-related costs, but coverage varies, so it’s important to clarify what is paid for, what might be billed to insurance, and any travel or time-off burdens.


To judge the “hype,” focus on the quality of the evidence rather than headlines or social media summaries. Peer-reviewed publication helps, but we also look for whether the study design and sample size are strong enough to support the claims and whether the outcomes are truly meaningful for patients (pain, daily function, and quality of life—not just lab markers). If you’d like, our team can help you interpret a trial listing or a published paper in the context of your symptoms and goals and discuss whether a study is a reasonable fit for you.

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How could genetics influence endometriosis treatment?

Genetics may change endometriosis treatment by helping us understand the biological pathways that drive pain, inflammation, and lesion behavior. As those pathways become clearer, researchers can develop more targeted, potentially non-hormonal medications designed for specific mechanisms rather than one-size-fits-all symptom control.


In the near term, the biggest impact is likely improved risk stratification and biomarker development—tools that could help predict who is more likely to have endometriosis, how aggressive it may be, or which approaches might be most effective. Most genetics-guided “precision” treatments are still in development, but our team stays closely aligned with this research and can discuss what’s realistic now versus what may be on the horizon when you meet with us.

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Reach Out

Have a question?

Dr. Steven Vasilev delivers best-in-class endometriosis guidance and a personalized treatment plan—built on evidence and your unique biology.


Led by Steven Vasilev, MD—an internationally recognized endometriosis specialist & MIGS surgeon—Lotus Endometriosis Institute is virtual-forward, with many patients traveling nationally for care. Clinical evaluation and surgical treatment are provided in California.

Santa Monica, CA

2121 Santa Monica Blvd, Santa Monica, CA 90404

Operating Hours

8:00 am - 5:00 pm
Monday - Friday

Arroyo Grande, CA

154 Traffic Way, Arroyo Grande, CA 93420