Salpingo-oophorectomy and the Risk of Ovarian, Fallopian Tube, and Peritoneal Cancers in Women with a BRCA1 or BRCA2 Mutation
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Notice bibliographique
Résumé
Women with adverse mutations in the BRCA1 or BRCA2 gene are at an increased lifetime risk of ovarian cancer, and these mutations also increase vulnerability to cancers of the fallopian tube and peritoneum. Risk levels were examined in a prospective study based on data from an international registry comprising 32 centers in Canada, the United States, Europe, and Israel. The 1828 women identified as carrying a BRCA1 or BRCA2 mutation were followed up for a mean of 3.5 years. Participants had a mean age at entry of 47 years. Approximately three-fourths of the women carried a BRCA1 mutation and about one-fourth, a BRCA2 mutation; eight individuals carried both. Nearly one-third of women in the study (30.4%) had undergone bilateral salpingo-oophorectomy before entering the study, and another 38.5% had an oophorectomy during follow-up. Fifty incident cancers were discovered during follow-up. Thirty-two of these cancers developed in women with intact ovaries. Eleven cancers were identified at the time of prophylactic oophorectomy, and 7 others after this procedure. The cumulative incidence of peritoneal cancer was estimated at 4.3% two decades after oophorectomy. The overall adjusted reduction in cancer risk associated with bilateral oophorectomy was 80%, with a multivariate hazard ratio of 0.2 and a 95% confidence interval of 0.07–0.58 (Fig. 1). The risk of ovarian, tubal, and primary peritoneal cancers in women with intact ovaries was highest for those 60–70 years of age who carried the BRCA1 mutation. Based on estimated incidence rates for women having both ovaries intact, the estimated penetrance of ovarian cancer was 62% up to age 75 years for carriers of the BRCA1 mutation, and 18% up to age 75 for those carrying the BRCA2 mutation.Fig. 1: Estimated risk of ovarian cancer in BRCA mutation carriers with and without oophorectomy. (Reproduced with permission. JAMA 2006;296:185–192. Copyright © 2006, American Medical Association. All rights reserved.)The investigators conclude that the risk of ovarian, tubal, and peritoneal cancer is lowered by 80% for carriers of the BRCA1 or BRCA2 mutation who undergo prophylactic oophorectomy. The findings support prophylactic surgery as a very effective risk reduction measure. Both the ovaries and the fallopian tubes should be removed. The residual risk of peritoneal cancer is not high enough to recommend against prophylactic surgery.
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Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,002 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,000 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découle