Browsing by Author "Bayram, Ece"

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    Sex differences in clinical phenotypes of behavioral variant frontotemporal dementia
    (Wiley, 2025) Liu, Xulin; de Boer, Sterre C. M.; Cortez, Kasey; Poos, Jackie M.; Illán-Gala, Ignacio; Heuer, Hilary; Forsberg, Leah K.; Casaletto, Kaitlin; Memel, Molly; Appleby, Brian S.; Barmada, Sami; Bozoki, Andrea; Clark, David; Cobigo, Yann; Darby, Ryan; Dickerson, Bradford C.; Domoto-Reilly, Kimiko; Galasko, Douglas R.; Geschwind, Daniel H.; Ghoshal, Nupur; Graff-Radford, Neill R.; Grant, Ian M.; Hsiung, Ging-Yuek Robin; Honig, Lawrence S.; Huey, Edward D.; Irwin, David; Kantarci, Kejal; Léger, Gabriel C.; Litvan, Irene; Mackenzie, Ian R.; Masdeu, Joseph C.; Mendez, Mario F.; Onyike, Chiadi U.; Pascual, Belen; Pressman, Peter; Bayram, Ece; Ramos, Eliana Marisa; Roberson, Erik D.; Rogalski, Emily; Bouzigues, Arabella; Russell, Lucy L.; Foster, Phoebe H.; Ferry-Bolder, Eve; Masellis, Mario; van Swieten, John; Jiskoot, Lize; Seelaar, Harro; Sanchez-Valle, Raquel; Laforce, Robert; Graff, Caroline; Galimberti, Daniela; Vandenberghe, Rik; de Mendonça, Alexandre; Tiraboschi, Pietro; Santana, Isabel; Gerhard, Alexander; Levin, Johannes; Sorbi, Sandro; Otto, Markus; Pasquier, Florence; Ducharme, Simon; Butler, Chris R.; Le Ber, Isabelle; Finger, Elizabeth; Rowe, James B.; Synofzik, Matthis; Moreno, Fermin; Borroni, Barbara; Boeve, Brad F.; Boxer, Adam L.; Rosen, Howie J.; Pijnenburg, Yolande A. L.; Rohrer, Jonathan D.; Tartaglia, Maria Carmela; ALLFTD Consortium; GENFI Consortium; Medicine, School of Medicine
    Introduction: Higher male prevalence in sporadic behavioral variant frontotemporal dementia (bvFTD) has been reported. We hypothesized differences in phenotypes between genetic and sporadic bvFTD females resulting in underdiagnosis of sporadic bvFTD females. Methods: We included genetic and sporadic bvFTD patients from two multicenter cohorts. We compared behavioral and cognitive symptoms, and gray matter volumes, between genetic and sporadic cases in each sex. Results: Females with sporadic bvFTD showed worse compulsive behavior (p = 0.026) and language impairments (p = 0.024) compared to females with genetic bvFTD (n = 152). Genetic bvFTD females had smaller gray matter volumes than sporadic bvFTD females, particularly in the parietal lobe. Discussion: Females with sporadic bvFTD exhibit a distinct clinical phenotype compared to females with genetic bvFTD. This difference may explain the discrepancy in prevalence between genetic and sporadic cases, as some females without genetic mutations may be misdiagnosed due to atypical bvFTD symptom presentation. Highlights: Sex ratio is equal in genetic behavioral variant of frontotemporal dementia (bvFTD), whereas more males are present in sporadic bvFTD. Distinct neuropsychiatric phenotypes exist between sporadic and genetic bvFTD in females. Phenotype might explain the sex ratio difference between sporadic and genetic cases.
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    Sex differences in the clinical manifestation of autosomal dominant frontotemporal dementia
    (Wiley, 2025) Memel, Molly; Staffaroni, Adam M.; Ilan-Gala, Ignacio; Garcia Castro, Jesús; Kornak, John; Tartaglia, Carmela M.; Saloner, Rowan; VandeBunte, Anna M.; Paolillo, Emily W.; Cadwallader, Claire J.; Chen, Coty; Gorno-Tempini, Maria Luisa; Mandelli, Malu; Apostolova, Liana; Graff-Radford, Neil; Litvan, Irene; Bayram, Ece; Pressman, Peter S.; Miyagawa, Toji; Mackenzie, Ian; Goldman, Jill; Darby, Richard R.; Appleby, Brian S.; Petrucelli, Len; Gendron, Tania; Heuer, Hilary W.; Forseberg, Leah K.; Rojas, Julio C.; Boeve, Brad F.; Brushaber, Nellie; Domoto-Reilly, Kimiko; Ghoshal, Nupur; Lapid, Maria; Pascual, Belen; Lee, Suzee; Ramos, Eliana Marisa; Ramanan, Vijay; Rademakers, Rosa; Rascovsky, Katya; Pantelyat, Alex; Masdeu, Joseph C.; Snyder, Allison; Boxer, Adam L.; Rosen, Howard J.; Casaletto, Kaitlin; ALLFTD Consortium; Neurology, School of Medicine
    Introduction: Sex differences are apparent in neurodegenerative diseases but have not been comprehensively characterized in frontotemporal dementia (FTD). Methods: Participants included 337 adults with autosomal dominant FTD enrolled in the ALLFTD Consortium. Clinical assessments and plasma were collected annually for up to 6 years. Linear mixed-effects models investigated how sex and disease stage are associated with longitudinal trajectories of cognition, function, and neurofilament light chain (NfL). Results: While sex differences were not apparent at asymptomatic stages, females showed more rapid declines across all outcomes in symptomatic stages compared to males. In asymptomatic participants, the association between baseline NfL and clinical trajectories was weaker in females versus males, a difference that was not present in symptomatic participants. Discussion: In genetic FTD, females show cognitive resilience in early disease stages followed by steeper clinical declines later in the disease. Baseline NfL may be a less sensitive prognostic tool for clinical progression in females with FTD-causing mutations. Highlights: Females with genetic FTD exhibit overall steeper increases in plasma neurofilament light chain (NfL) than males. Females with genetic FTD outperform NfL levels in asymptomatic stages compared to males. Once symptomatic, females with genetic FTD decline more rapidly than males. Plasma NfL is a stronger prognostic marker in asymptomatic males than females.