Plasma Neurofilament Light for Prediction of Disease Progression in Familial Frontotemporal Lobar Degeneration

Julio C. Rojas, Ping Wang, Adam M. Staffaroni, Carolin Heller, Yann Cobigo, Amy Wolf, Sheng Yang M. Goh, Peter A. Ljubenkov, Hilary W. Heuer, Jamie C. Fong, Joanne B. Taylor, Eliseo Veras, Linan Song, Andreas Jeromin, David Hanlon, Lili Yu, Arvind Khinikar, Rajeev Sivasankaran, Agnieszka Kieloch, Marie Anne ValentinAnna M. Karydas, Laura L. Mitic, Rodney Pearlman, John Kornak, Joel H. Kramer, Bruce L. Miller, Kejal Kantarci, David S. Knopman, Neill Graff-Radford, Leonard Petrucelli, Rosa Rademakers, David J. Irwin, Murray Grossman, Eliana Marisa Ramos, Giovanni Coppola, Mario F. Mendez, Yvette Bordelon, Bradford C. Dickerson, Nupur Ghoshal, Edward D. Huey, Ian R. Mackenzie, Brian S. Appleby, Kimiko Domoto-Reilly, Ging Yuek R. Hsiung, Arthur W. Toga, Sandra Weintraub, Daniel I. Kaufer, Diana Kerwin, Irene Litvan, Chiadikaobi U. Onyike, Alexander Pantelyat, Erik D. Roberson, Maria C. Tartaglia, Tatiana Foroud, Weiping Chen, Julie Czerkowicz, Danielle L. Graham, John C. Van Swieten, Barbara Borroni, Raquel Sanchez-Valle, Fermin Moreno, Robert Laforce, Caroline Graff, Matthis Synofzik, Daniela Galimberti, James B. Rowe, Mario Masellis, Elizabeth Finger, Rik Vandenberghe, Alexandre De Mendonça, Fabrizio Tagliavini, Isabel Santana, Simon Ducharme, Chris R. Butler, Alexander Gerhard, Johannes Levin, Adrian Danek, Markus Otto, Sandro Sorbi, David M. Cash, Rhian S. Convery, Martina Bocchetta, Martha Foiani, Caroline V. Greaves, Georgia Peakman, Lucy Russell, Imogen Swift, Emily Todd, Jonathan D. Rohrer, Bradley F. Boeve, Howard J. Rosen, Adam L. Boxer

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: We tested the hypothesis that plasma neurofilament light chain (NfL) identifies asymptomatic carriers of familial frontotemporal lobar degeneration (FTLD)-causing mutations at risk of disease progression. Methods: Baseline plasma NfL concentrations were measured with single-molecule array in original (n = 277) and validation (n = 297) cohorts. C9orf72, GRN, and MAPT mutation carriers and noncarriers from the same families were classified by disease severity (asymptomatic, prodromal, and full phenotype) using the CDR Dementia Staging Instrument plus behavior and language domains from the National Alzheimer's Disease Coordinating Center FTLD module (CDR+NACC-FTLD). Linear mixed-effect models related NfL to clinical variables. Results: In both cohorts, baseline NfL was higher in asymptomatic mutation carriers who showed phenoconversion or disease progression compared to nonprogressors (original: 11.4 ± 7 pg/mL vs 6.7 ± 5 pg/mL, p = 0.002; validation: 14.1 ± 12 pg/mL vs 8.7 ± 6 pg/mL, p = 0.035). Plasma NfL discriminated symptomatic from asymptomatic mutation carriers or those with prodromal disease (original cutoff: 13.6 pg/mL, 87.5% sensitivity, 82.7% specificity; validation cutoff: 19.8 pg/mL, 87.4% sensitivity, 84.3% specificity). Higher baseline NfL correlated with worse longitudinal CDR+NACC-FTLD sum of boxes scores, neuropsychological function, and atrophy, regardless of genotype or disease severity, including asymptomatic mutation carriers. Conclusions: Plasma NfL identifies asymptomatic carriers of FTLD-causing mutations at short-term risk of disease progression and is a potential tool to select participants for prevention clinical trials.

Original languageEnglish (US)
Pages (from-to)E2296-E2312
JournalNeurology
Volume96
Issue number18
DOIs
StatePublished - May 4 2021

ASJC Scopus subject areas

  • Clinical Neurology

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