Abstract
Purpose
To determine the frequency of hereditary breast cancer associated with different mutated genes and to evaluate fertility preservation (FP) outcomes among young women with hereditary breast cancer when compared to non-hereditary breast cancer.
Material and methods
A retrospective cohort study of women with breast cancer who underwent fertility preservation treatment at our academic fertility center between 2005 and 2019. We included all women with breast cancer aged < 40 years who had a genetic testing and underwent fertility preservation before starting gonadotoxic therapy (n = 132). Our objective was to evaluate the total number of oocytes retrieved, mature oocytes MII, embryos (where appropriate), cryopreserved oocytes, and/or embryos.
Results
Of 132 women with breast cancer, 40 women were found to be genetically positive (31.4%), 31 women of 40 (77.5%) had a BRCA mutation, 3 (7.5%) had ATM, 2 (5%) had CHK2, and one (2.5%) for each of the following genes: PALP2, NF, MUTYH.c.536A, and TP53. There was no significant difference between the groups in the total number of eggs retrieved and the number of MII oocytes and cryopreserved oocytes. The numbers of fertilized oocytes and cryopreserved embryos in the hereditary (n = 40) and non-hereditary (n = 92) group were (5.15 ± 6.6 vs 2.90 ± 4.2, P = 0.054) and (3.35 ± 3.7 vs 1.9 ± 2.8, P = 0.046) respectively.
Conclusion
More than three quarters of positive mutated genes in women with breast cancer are BRCA mutations. Compared to those with non-hereditary breast cancer, women with hereditary breast cancer attained higher number of cryopreserved embryos.
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Abbreviations
- AFC:
-
Antral follicle count
- ATM:
-
Ataxia-telangiectasia mutated
- BRCA:
-
Breast cancer gene
- CP:
-
Clinical pregnancy
- CHK2:
-
Checkpoint kinase 2
- DOR:
-
Diminish ovarian reserve
- ET:
-
Endometrial thickness
- FET:
-
Frozen embryo transfer
- FSH:
-
Follicle stimulating hormone
- GnRH:
-
Gonadotropin releasing hormone
- HRT:
-
Hormonal replacement treatment
- HCG:
-
Human chorionic gonadotropin
- IVF:
-
In vitro fertilization
- IVM:
-
In vitro maturation
- ICSI:
-
Intracytoplasmic sperm injection
- LBR:
-
Live birth rate
- NF1:
-
Neurofibromin 1
- PALP2:
-
Partner and localizer of BRCA 2
- PCOS:
-
Polycystic ovarian syndrome
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Acknowledgements
The author would like to thank Nancy Lamothe for managing the database, and all nurses, physicians, and medical health workers at the MUHC-Reproductive center.
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S. Arab was involved in study design, data collection, data analysis, and writing the manuscript; W. Buckett participated in study design, data analysis, editing the manuscript, and review; T. Tulandi was involved in data analysis, interpretation, and editing the manuscript.
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Research and Ethics Board (MUHC REB) approved the study (REB #2020-6219).
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Arab, S., Tulandi, T. & Buckett, W. Hereditary breast cancer and fertility preservation outcomes. J Assist Reprod Genet 39, 1163–1168 (2022). https://doi.org/10.1007/s10815-022-02486-0
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DOI: https://doi.org/10.1007/s10815-022-02486-0