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Página principal > Artículos > Artículos publicados > From exome analysis in idiopathic azoospermia to the identification of a high-risk subgroup for occult Fanconi anemia |
Fecha: | 2019 |
Resumen: | Purpose: in about 10% of patients affected by Fanconi anemia (FA) the diagnosis is delayed until adulthood, and the presenting symptom in these "occult" FA cases is often a solid cancer and cancer treatment-related toxicity. Highly predictive clinical parameter(s) for diagnosing such an adult-onset cases are missing. - Methods: (1) Exome sequencing (ES), (2) Sanger sequencing of FANCA, (3) diepoxybutane (DEB)-induced chromosome breakage test. - Results: ES identified a pathogenic homozygous FANCA variant in a patient affected by Sertoli cell-only syndrome (SCOS) and in his azoospermic brother. Although they had no overt anemia, chromosomal breakage test revealed a reverse somatic mosaicism in the former and a typical FA picture in the latter. In 27 selected SCOS cases, 1 additional patient showing compound heterozygous pathogenic FANCA variants was identified with positive chromosomal breakage test. - Conclusion: we report an extraordinarily high frequency of FA in a specific subgroup of azoospermic patients (7. 1%). The screening for FANCA pathogenic variants in such patients has the potential to identify undiagnosed FA before the appearance of other severe clinical manifestations of the disease. The definition of this high-risk group for "occult" FA, based on specific testis phenotype with mild/borderline hematological alterations, is of unforeseen clinical relevance. |
Ayudas: | European Commission 305421 European Commission 289880 Ministerio de Economía y Competitividad SAF2015-64152-R Ministerio de Economía y Competitividad FIS/PI17/01822 Ministerio de Economía y Competitividad FIS/PI14/01250 |
Derechos: | Tots els drets reservats. |
Lengua: | Angles |
Documento: | Article ; recerca ; Versió publicada |
Materia: | Azoospermia ; Exome sequencing ; Fanconi anemia ; Genetics ; Male infertility |
Publicado en: | Genetics in Medicine, Vol. 21, issue 1 (Jan. 2019) , p. 189-194, ISSN 1098-3600 |
Postprint 36 p, 3.1 MB |