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Antiplatelet use and CADASIL: a retrospective observational analysis.
Neurological Sciences 2023 March 26
OBJECTIVES: Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy (CADASIL) is hallmarked by age-dependent accumulation of microangiopathy with antiplatelet medications commonly used for stroke prevention though without known therapeutic benefit. Our objective was to identify whether antiplatelet therapy impacted the incidence of acute ischemic stroke (AIS) or intracerebral hemorrhage (ICH) in those with reported CADASIL.
MATERIALS AND METHODS: Owing to the rarity of the disease, we performed a retrospective study of anonymized data from the international TriNetX Research Network (Oct 2015 through January 2021). Individuals had an ICD-10 code (I67.850) for CADASIL. The primary outcome was incidence of validated ICD-10 codes for AIS (I63) and ICH (I61) linked with unique hospital admission encounters. The primary exposure was use of an antiplatelet medication for at least 1 month prior to the primary outcome. Age-adjusted logistic regression was used for likelihood ratios.
RESULTS: We identified 455 individuals: 36% female, 40 (8.8%) antiplatelet exposed. Those with antiplatelet use were older (antiplatelet: 61±12 years vs. unexposed: 57±14 years, p = 0.034) with similar rates of AIS [antiplatelet: 23%(9/40) vs. unexposed: 14%(60/415); p=0.18] and ICH [antiplatelet: 3%(1/40) vs. unexposed: 5%(19/415); p = 0.54) and without significant impact on age-adjusted AIS likelihood (OR 1.62, 95%CI 0.73-3.60, p=0.23). Sample size precluded ICH regression analyses.
CONCLUSIONS: Our data suggests that antiplatelet use did not significantly impact incidence of AIS or ICH within a group of individuals with suspected CADASIL This study highlights the need for further understanding of the pathophysiology of CADASIL to lead to disease modifying treatments.
MATERIALS AND METHODS: Owing to the rarity of the disease, we performed a retrospective study of anonymized data from the international TriNetX Research Network (Oct 2015 through January 2021). Individuals had an ICD-10 code (I67.850) for CADASIL. The primary outcome was incidence of validated ICD-10 codes for AIS (I63) and ICH (I61) linked with unique hospital admission encounters. The primary exposure was use of an antiplatelet medication for at least 1 month prior to the primary outcome. Age-adjusted logistic regression was used for likelihood ratios.
RESULTS: We identified 455 individuals: 36% female, 40 (8.8%) antiplatelet exposed. Those with antiplatelet use were older (antiplatelet: 61±12 years vs. unexposed: 57±14 years, p = 0.034) with similar rates of AIS [antiplatelet: 23%(9/40) vs. unexposed: 14%(60/415); p=0.18] and ICH [antiplatelet: 3%(1/40) vs. unexposed: 5%(19/415); p = 0.54) and without significant impact on age-adjusted AIS likelihood (OR 1.62, 95%CI 0.73-3.60, p=0.23). Sample size precluded ICH regression analyses.
CONCLUSIONS: Our data suggests that antiplatelet use did not significantly impact incidence of AIS or ICH within a group of individuals with suspected CADASIL This study highlights the need for further understanding of the pathophysiology of CADASIL to lead to disease modifying treatments.
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