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Access type: UnknownAuthor: search.filters.author.Adela Chirita-Emandi

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    Item type:Publication,
    Genetic Testing to Inform Epilepsy Treatment Management From an International Study of Clinical Practice
    (2022)
    Dianalee McKnight
    ;
    Ana Morales
    ;
    Kathryn E. Hatchell
    ;
    Sara L. Bristow
    ;
    Joshua L. Bonkowsky
    <jats:sec id="ab-noi220068-4"><jats:title>Importance</jats:title><jats:p>It is currently unknown how often and in which ways a genetic diagnosis given to a patient with epilepsy is associated with clinical management and outcomes.</jats:p></jats:sec><jats:sec id="ab-noi220068-5"><jats:title>Objective</jats:title><jats:p>To evaluate how genetic diagnoses in patients with epilepsy are associated with clinical management and outcomes.</jats:p></jats:sec><jats:sec id="ab-noi220068-6"><jats:title>Design, Setting, and Participants</jats:title><jats:p>This was a retrospective cross-sectional study of patients referred for multigene panel testing between March 18, 2016, and August 3, 2020, with outcomes reported between May and November 2020. The study setting included a commercial genetic testing laboratory and multicenter clinical practices. Patients with epilepsy, regardless of sociodemographic features, who received a pathogenic/likely pathogenic (P/LP) variant were included in the study. Case report forms were completed by all health care professionals.</jats:p></jats:sec><jats:sec id="ab-noi220068-7"><jats:title>Exposures</jats:title><jats:p>Genetic test results.</jats:p></jats:sec><jats:sec id="ab-noi220068-8"><jats:title>Main Outcomes and Measures</jats:title><jats:p>Clinical management changes after a genetic diagnosis (ie, 1 P/LP variant in autosomal dominant and X-linked diseases; 2 P/LP variants in autosomal recessive diseases) and subsequent patient outcomes as reported by health care professionals on case report forms.</jats:p></jats:sec><jats:sec id="ab-noi220068-9"><jats:title>Results</jats:title><jats:p>Among 418 patients, median (IQR) age at the time of testing was 4 (1-10) years, with an age range of 0 to 52 years, and 53.8% (n = 225) were female individuals. The mean (SD) time from a genetic test order to case report form completion was 595 (368) days (range, 27-1673 days). A genetic diagnosis was associated with changes in clinical management for 208 patients (49.8%) and usually (81.7% of the time) within 3 months of receiving the result. The most common clinical management changes were the addition of a new medication (78 [21.7%]), the initiation of medication (51 [14.2%]), the referral of a patient to a specialist (48 [13.4%]), vigilance for subclinical or extraneurological disease features (46 [12.8%]), and the cessation of a medication (42 [11.7%]). Among 167 patients with follow-up clinical information available (mean [SD] time, 584 [365] days), 125 (74.9%) reported positive outcomes, 108 (64.7%) reported reduction or elimination of seizures, 37 (22.2%) had decreases in the severity of other clinical signs, and 11 (6.6%) had reduced medication adverse effects. A few patients reported worsening of outcomes, including a decline in their condition (20 [12.0%]), increased seizure frequency (6 [3.6%]), and adverse medication effects (3 [1.8%]). No clinical management changes were reported for 178 patients (42.6%).</jats:p></jats:sec><jats:sec id="ab-noi220068-10"><jats:title>Conclusions and Relevance</jats:title><jats:p>Results of this cross-sectional study suggest that genetic testing of individuals with epilepsy may be materially associated with clinical decision-making and improved patient outcomes.</jats:p></jats:sec>
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