High serum follistatin levels in women with ovarian endometriosis
Abstract
BACKGROUND: Follistatin is an activin-binding protein produced by several tissues, including endometrium and endometriotic implants. We aimed to quantify follistatin in patients with ovarian endometriosis and investigate its value as a diagnostic marker. METHODS: Women undergoing laparoscopic excision of ovarian endometrioma (n = 52) or other benign ovarian cysts (n = 52) were studied, plus women with non-ovarian endometriosis (n = 11) and healthy controls (n = 27). Serum was collected from all subjects, and peritoneal and cystic fluid from a subset with endometrioma. Follistatin was measured by enzyme-linked immunosorbent assay. The diagnostic accuracy of follistatin to detect endometrioma was evaluated by receiver operating characteristic (ROC) curve and compared with cancer antigen (CA)-125. RESULTS: Serum follistatin was increased in women with ovarian endometrioma (2080 +/- 94 pg/ml) compared with controls (545 +/- 49 pg/ml, P < 0.001), other benign ovarian cysts (795 +/- 60 pg/ml, P < 0.001) or non-ovarian endometriosis (1271 +/- 115 pg/ml, P < 0.001). Cystic fluid showed a higher concentration of follistatin (9850 +/- 4461 pg/ml) than peritoneal fluid (1885 +/- 261 pg/ml, P < 0.001) and serum (P < 0.001). Follistatin levels detected 48/52 cases of endometrioma (92% sensitivity) at 1433 pg/ml cut-off, corresponding to 92% specificity. CA-125 detected only 44% of endometriomas with 90% specificity. ROC curve comparison showed follistatin was more accurate than CA-125 to discriminate women with endometrioma either from controls or women with other benign ovarian cysts (P < 0.0001). CONCLUSIONS: Serum follistatin is increased in women with endometriosis and allows clear distinction between endometrioma and other benign ovarian cysts. Follistatin has the sensitivity and specificity to become a useful clinical marker of ovarian endometrioma.
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Follistatin has been shown to be increased in endometriosis patients, especially in a subgroup with ovarian endometrioma, and showed good sensitivity and specificity.
“Follistatin, an inhibitor of activin, has been shown to be increased in endometriosis patients [23], especially in a subgroup of patients with ovarian endometrioma, and showed good sensitivity and specificity [43].”
From Update on biomarkers for the detection of endometriosis (2015) · cites this paper as [43]
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- Authors
- Florio, P., Reis, F. M., Torres, P. B., Calonaci, F., Abrao, M. S., Nascimento, L. L., Franchini, M., Cianferoni, L., & Petraglia, F.
- Affiliations
- University of Siena (IT)
- Universidade Federal de Minas Gerais (BR)
- Venue
- Human Reproduction
- Publisher
- Oxford University Press (OUP)
- Published
- 2009-06-23
- Volume
- 24
- Issue
- 10
- Pages
- 2600-2606
- ISSN
- 0268-1161 (ISSN-L)
- 1460-2350
- OpenAlex
- W2117027199
- Cited by
- 51
- References
- 35
- Citations by year
- 2026: 3 · 2025: 2 · 2024: 4 · 2023: 1 · 2022: 3 · 2021: 1 · 2020: 2 · 2017: 4 · 2016: 5 · 2015: 4 · 2014: 5 · 2013: 3 · 2012: 5
- FWCI
- 5.50
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Human Reproduction (publishedVersion)
- PubMed (publishedVersion)
- Scientific Electronic Library Online (São Paulo Research Foundation, Latin American and Caribbean Center on Health Sciences Information, Conselho Nacional de Desenvolvimento Científico e Tecnológico) (publishedVersion)
- Florence Research (University of Florence) (submittedVersion)
- Use Siena air (University of Siena) (submittedVersion)
- Funders
- Università degli Studi di Siena
- Topics
- Health Sciences › Medicine › Reproductive Medicine › Endometriosis Research and Treatment
- Health Sciences › Medicine › Reproductive Medicine › Ovarian cancer diagnosis and treatment
- Health Sciences › Medicine › Obstetrics and Gynecology › Gynecological conditions and treatments
- Keywords
- follistatin, endometrioma, serum biomarkers, diagnostic biomarkers, CA125, cyst fluid, peritoneal fluid, benign ovarian cysts, activin-binding protein
- MeSH terms
- Adult, Diagnosis, Differential, Endometriosis, Female, Humans, Ovarian Diseases, Biomarkers, CA-125 Antigen, Follistatin
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