化学療法後の卵巣機能再開マーカーとしてのAMH：IPDメタアナリシスおよび系統的レビュー

In premenopausal women with breast cancer, chemotherapy often leads to amenorrhea that could be temporary or permanent. Anti-Müllerian hormone (AMH) is a potential biomarker predicting resumption of ovarian function, an outcome that aids in the decision making for endocrine therapy. This study aimed to determine the predictive value of pre-chemotherapy AMH levels for resumption of ovarian function.

We conducted a systematic review and individual patient data (IPD) meta-analysis. Online databases were searched using terms including: AMH, prediction, menses, menses recovery, amenorrhea, chemotherapy-related amenorrhea, anovulation, menopause, infertility, ovarian reserve, premenopausal, breast cancer, chemotherapy. The study protocol was registered with PROSPERO (CRD42021233966).

The systematic review included 31 studies, with 26 contributing to the meta-analysis. Eleven studies provided IPD from 1,029 women. Ovarian function resumption rates varied from 24 % to 61 % depending on follow-up time. Pre-chemotherapy AMH was significantly higher in women whose ovarian function resumed, standardized mean difference 0.94 (95 % CI 0.65-1.22) and showed good predictive ability for resumption of ovarian function (AUC 0.79-0.83). However, the identified cut-off values for pre-chemotherapy AMH gave high false negative rates and differed a lot between studies which was much determined by follow-up time, age and used AMH assay.

Pre-chemotherapy AMH shows association with ovarian function resumption, but a clinically reliable cut-off across assays could not be established using individual patient data. Therefore, due to high inter-assay variability, AMH is not suitable for optimizing endocrine therapy in premenopausal breast cancer patients at this time. Standardizing AMH assays can help in further research into a cut-off value.