Abstract
Fanconi anemia (FA) is a multisystem disease, characterized by the triad of physical abnormalities, bone marrow failure, and increased risk for malignancy. In the past few years, data has accumulated regarding fertility issues in FA patients, mostly due to gonadal dysfunction, which is prevalent in FA patients reaching puberty. It seems that attenuated FA phenotype lacking the classical manifestations often is presented with POI or azoospermia. Searching the literature, we summarized data regarding FA patients presenting as suffering from sub/infertility due to gonadal dysfunction, with or without other FA symptoms. We present a summary of the patients having biallelic pathogenic variants in FA genes FANCA, FANCM, BRCA2, and XRCC2 that presented with gonadal dysfunction with or without other phenotypic features of FA. Some were in mosaic, while some are considered hypomorphic, enabling residual protein function. There are also a few descriptions of POI associated with monoallelic pathogenic variants in FANCA, BRCA2, and FANCL. We conclude that the diagnosis of FA in gonadal dysfunction patients is of utmost importance due to its actionability. Follow-up strategies in FA patients are designed to discover early stages of leukemias and solid tumors and thus save lives. The feasibility of next-generation sequencing (NGS) can now ease this diagnostic procedure. An open question is the justification of performing NGS for all isolated azoospermia/POI patients.
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Daum, H., Zlotogora, J. Fanconi Anemia Gene Variants in Patients with Gonadal Dysfunction. Reprod. Sci. 29, 1408–1413 (2022). https://doi.org/10.1007/s43032-021-00582-7
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DOI: https://doi.org/10.1007/s43032-021-00582-7