Fertility and Procreation Unit, Division of Gynecologic Oncology, European Institute of Oncology, Via S. Luca 8, 20122 Milan, Italy.
Department of Obstetrics and Gynecology, San Raffaele Scientific Institute, Via Olgettina 60, 20132 Milan, Italy.
Hum Reprod. 2018 Feb 1;33(2):181-187. doi: 10.1093/humrep/dex356.
Fertility issues have become critical in the management and counseling of BRCA mutation carriers. In this setting four points deserve consideration. (1) Women in general lose their ability to conceive at a mean age of 41 years, thus the suggested policy of prophylactic bilateral salpingo-oophorectomy at age 40 for BRCA mutation carriers does not affect the chances of natural pregnancy. Conversely, if the procedure is chosen at 35 years old, oocyte cryopreservation prior to surgery should be considered. (2) Some evidence suggests that ovarian reserve may actually be partly reduced in BRCA mutations carriers and that the mutation may affect ovarian responsiveness to stimulation. However, these findings are still controversial. (3) Breast cancer is not rare before the age of 40 and fertility preservation after diagnosis can be requested in a significant proportion of BRCA mutation carriers. Thus, a policy of oocyte cryopreservation in young healthy carriers deserves consideration. The procedure could be considered at a young age and in an elective setting, when ovarian stimulation may yield more oocytes of better quality. (4) Preimplantation genetic diagnosis (PGD) could be considered in BRCA mutations carriers, particularly when good quality oocytes have been stored at a young age. Based on the current knowledge, a univocal approach cannot be recommended; in depth patient counseling is warranted.
生育问题在 BRCA 基因突变携带者的管理和咨询中变得至关重要。在这种情况下,有四点值得考虑。(1) 一般女性在平均 41 岁时失去受孕能力,因此建议 BRCA 基因突变携带者在 40 岁时进行预防性双侧输卵管卵巢切除术,并不能影响自然妊娠的机会。相反,如果选择在 35 岁时进行手术,则应考虑在手术前进行卵母细胞冷冻保存。(2) 有一些证据表明,BRCA 基因突变携带者的卵巢储备实际上可能部分减少,并且该突变可能影响卵巢对刺激的反应性。然而,这些发现仍然存在争议。(3) 乳腺癌在 40 岁之前并不罕见,并且在很大一部分 BRCA 基因突变携带者中可以在诊断后要求保留生育能力。因此,在年轻健康的携带者中,卵母细胞冷冻保存的策略值得考虑。该程序可以在年轻时和选择性设置中考虑,此时卵巢刺激可能产生更多质量更好的卵母细胞。(4) 可以考虑在 BRCA 基因突变携带者中进行胚胎植入前遗传学诊断(PGD),特别是当年轻时已经储存了高质量的卵母细胞时。基于目前的知识,不能推荐统一的方法;需要进行深入的患者咨询。