Endometriosis Knowledgebase


A repository for genes associated with endometriosis

Results


PMID 15979990
Gene Name PTGS2
Condition Endometriosis
Association Associated
Population size 103
Population details 103 (71 endometriomas (group 1), 32 peritoneal implants and or recto-vaginal nodules (group 2) of endometriotic tissue from 85 patients submitted to complete laparoscopic ablation of severe endometriosis)
Sex Female
Other associated phenotypes Endometriosis
Increased cyclooxygenase-2 expression is associated with better clinical outcome in patients submitted to complete ablation for severe endometriosis.

Hum Reprod. 2005 Oct;20(10):2964-8. Epub 2005 Jun 24.

Fanfani, Francesco| Fagotti, Anna| Ferrandina, Gabriella| Bifulco, Giuseppe| Legge, Francesco| Lorusso, Domenica| Minelli, Luca| Scambia, Giovanni

Department of Oncology, Division of Gynaecologic Oncology, Catholic University of Sacred Heart, Campobasso, Italy.

BACKGROUND: Recent studies have demonstrated the overexpression of cyclooxygenase-2 (COX-2) in endometriosis. The aim of this study was to investigate the correlation between COX-2 expression and the clinical outcome rate in a homogeneous series of patients undergoing fertility-sparing complete laparoscopic ablation for severe endometriosis. METHODS: COX-2 expression was analysed by immunohistochemistry in 103 samples, 71 endometriomas (group 1) and 32 peritoneal implants and or recto-vaginal nodules (group 2) of endometriotic tissue from 85 patients submitted to complete laparoscopic ablation of severe endometriosis. RESULTS: At median follow-up of 54 months, a recurrence rate of 24.7% (n = 21) was observed. Patients with COX-2-positive endometriotic cysts showed a lower relapse rate than COX-2-negative cases (16.7 versus 41.2%; P = 0.036). Patients with COX-2-positive peritoneal implant and or recto-vaginal nodule showed a similar trend. Taking the two groups of patients together, we found a significantly lower relapse rate in COX-2-positive patients in comparison to COX-2-negative patients (16.4 versus 40%; P = 0.0152). Moreover, COX-2-positive patients showed a longer relapse-free survival in comparison to COX-2-negative patients (P = 0.016). CONCLUSIONS: In patients with severe endometriosis who underwent fertility-sparing complete ablation, COX-2 overexpression characterizes a subgroup of patients with lower risk of relapse and longer relapse-free survival.

Mesh Terms: Adult| Cyclooxygenase 2/*biosynthesis| Disease-Free Survival| Endometriosis/*enzymology/*surgery| Endometrium/diagnostic imaging/enzymology/pathology| Female| Follow-Up Studies| *Gene Expression Regulation, Enzymologic| Humans| Immunohistochemist