An spanish study of secondary findings in families affected with mendelian disorders: choices, prevalence and family history

Autor: Marta Codina-Solà, Laura Trujillano, Anna Abulí, Eulàlia Rovira-Moreno, Patricia Muñoz-Cabello, Berta Campos, Paula Fernández-Álvarez, Dolors Palau, Estela Carrasco, Irene Valenzuela, Anna Maria. Cueto-González, Amaia Lasa-Aranzasti, Javier Limeres, Jordi Leno-Colorado, Mar Costa-Roger, Alejandro Moles-Fernández, Judith Balmaña, Orland Díez, Ivon Cuscó, Elena Garcia-Arumí, Eduardo Fidel Tizzano
Rok vydání: 2022
Předmět:
Zdroj: European Journal of Human Genetics. 31:223-230
ISSN: 1476-5438
1018-4813
DOI: 10.1038/s41431-022-01240-5
Popis: Clinical exome sequencing has the potential to identify pathogenic variants unrelated to the purpose of the study (secondary findings, SFs). Data describing actual choices of SFs in participants in a clinical setting and factors influencing their decision are virtually non-existant in Europe. In this work, we report the acceptance rate of SFs, calculate their prevalence and study factors associated with the decision in a cohort of patients affected with a rare genetic disorder in a Spanish Hospital. Finally, we re-examine the presence of previously non reported family history in positive cases. We retrospectively reviewed informed consent choices and SF results from 824 unrelated probands affected with rare genetic disorders who underwent whole-genome or exome sequencing. Ninety percent of families (740/824) affected with rare disorders wished to be informed of SFs. Declining SFs was associated with a prenatal setting (30% vs. 8.7%, p = 0.025), consanguinity (19% vs. 8.7%, p = 0.013), male gender (10.6% vs. 1.5%, p = 0.00865) and the proband being a minor (10.6% vs. 1.5%, p = 0.014). Overall, 27 pathogenic or likely pathogenic variants were identified in 27 individuals, with an SF prevalence of 3.6%. Disclosure of SFs increased the percentage of positive family histories and resulted in early diagnosis or changes in the management of 10 individuals from five families. We show that the acceptance of SFs in Spain is high and the disclosure of SFs leads to a clinically meaningful change in the medical management of individuals.
Databáze: OpenAIRE
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