ArticleCerebrovascular diseases (Basel, Switzerland)2025
Parental Influence on Intracerebral Hemorrhage Onset in Hereditary Dutch-Type Cerebral Amyloid Angiopathy.
Article in Cerebrovascular diseases (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
introductionDutch-type cerebral amyloid angiopathy (D-CAA) is an autosomal dominant hereditary form of CAA causing intracerebral hemorrhage (ICH) and cognitive decline. The age of onset of ICH in D-CAA mutation carriers is strikingly variable and ranges from late thirties up to 70 years. We investigated the presence of genetic anticipation and assessed the influence of parental age at onset and sex on age of ICH onset in offspring.
methodsWe included (potential) D-CAA mutation carriers from our prospective D-CAA family database. Participants were sent a questionnaire by mail and asked for the onset age of symptomatic ICH and the onset age of symptomatic ICH of their affected first-degree relative(s), their siblings and affected parent. We used a Cox regression model with the age of onset of the parent as the covariate and the sex of the offspring as the factor. Next, we replaced the sex of the offspring with a factor with four levels: mother/daughter, mother/son, father/daughter, and father/son. We used a random effect per household.
resultsA total of 66 respondents completed the questionnaire. Reported mean age of first symptomatic ICH was similar (both 52 years, p = 0.87) for D-CAA parents (n = 60) and their offspring (n = 100). Offspring with a mother with D-CAA seemed to have an earlier ICH onset (50 years, standard deviation [SD] ± 7) than offspring with a paternal inheritance (54 years, SD ± 6, p = 0.03). There was no association between onset of first ICH of the parent and offspring after adding sex of the offspring to the Cox regression model: hazard ratio 0.99, 95% CI: 0.94-1.03, p = 0.51. The interaction between parent's sex and child's sex was not significant (p = 0.70). The results with and without random effect were essentially identical.
conclusionWe found no indication for genetic anticipation in D-CAA in general, although maternal inheritance seemed to be associated with an earlier ICH onset.
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