Citations 3
Novel risk loci in LGI1-antibody encephalitis: genome-wide association study discovery and validation cohorts
Elliott, Katherine S. , Gilbert, Edmund , Harper, Andrew R. , Sempere, Vicente Peris, Pinto, Anne‐Laurie , Rayner, N. William, Mentzer, Alexander J. , Delanty, Norman, Picard, Géraldine , Titulaer, Maarten J. , Kuhlenbäeumer, Gregor, Mignot, Emmanuel , Cavelleri, Gianpiero L, Irani, Sarosh R. , Cavalleri, Gianpiero L. , Mentzer, Alexander J , Handel, Adam , Melzer, Nico , Lee, Soon-Tae , Leypoldt, Frank , Honnorat, Jérôme , Mignot, Emmanuel , Irani, Sarosh R , Cavalleri, Gianpiero L , Titulaer, Maarten J , Binks, Sophie , Muñiz‐Castrillo, Sergio , Araujo, Tânia Kawasaki de , Brown, Andrew , Chong, Amanda Yoon-Yee , Band, Gavin , Costantino, Félicie , Rogemond, Véronique , Handel, Adam E. , Lee, Soon‐Tae , Honnorat, Jérôme , Knight, Julian Charles
Brain | October 24, 2024 | Volume: 148 | Issue: 3 | Pages: 737-745
Abstract Encephalitis with antibodies to leucine-rich glioma-inactivated 1 (LGI1-Ab-E) is a common form of autoimmune encephalitis, presenting with seizures and neuropsychiatric changes, predominantly in older males. More than 90% of patients carry the human leukocyte antigen (HLA) class II allele, HLA-DRB1*07:01. However, this is also present in 25% of healthy controls. Therefore, we hypothesized the presence of additional genetic predispositions. In this genome-wide association study and meta-analysis, we studied a discovery cohort of 131 French LGI1-Ab-E and a validation cohort of 126 American, British and Irish LGI1-Ab-E patients, ancestry-matched to 2613 and 2538 European controls, respectively. Outside the known major HLA signal, we found two single nucleotide polymorphisms at genome-wide significance (P < 5 × 10−8), implicating PTPRD, a protein tyrosine phosphatase, and LINC00670, a non-protein coding RNA gene. Meta-analysis defined four additional non-HLA loci, including the protein coding COBL gene. Polygenic risk scores with and without HLA variants proposed a contribution of non-HLA loci. In silico network analyses suggested LGI1 and PTPRD-mediated interactions via the established receptors of LGI1, ADAM22 and ADAM23. Our results identify new genetic loci in LGI1-Ab-E. These findings present opportunities for mechanistic studies and offer potential markers of susceptibility, prognostics and therapeutic responses.
Multiancestry analysis of the HLA locus in Alzheimer’s and Parkinson’s diseases uncovers a shared adaptive immune response mediated by HLA-DRB1*04 subtypes
Guen, Yann Le , Luo, Guo , Damotte, Vincent , Jansen, Iris E. , Nicolas, Aude , Rojas, Itziar de, Bellenguez, Céline , Lian, Michelle Mulan , Parveen, Kayenat, Morizono, Takashi, Park, Hyeonseul, Grenier‐Boley, Benjamin , Naito, Tatsuhiko , Talyansky, Seth D., Yogeshwar, Selina , Sempere, Vicente Peris, Satake, Wataru , Álvarez, Victoria , Arosio, Beatrice , Boland, Anne , Daniele, Antonio , Darling, D.H., Dichgans, Martin , Dufouil, Carole , Düzel, Emrah , García‐Ribas, Guillermo, García‐Alberca, José María , García-González, Pablo, Giedraitis, Vilmantas , Graff, Caroline , Grünblatt, Edna , Hausner, Lucrezia , Jung, Yoo Jin , Deckert, Jürgen, Kern, Silke , Kuulasmaa, Teemu , Lee, Kun Ho , Lin, Ling , Masullo, Carlo , Mehrabian, Shima , Mendonça, Alexandre de , Boada, Merçé , Mir, Pablo , Moreno, Fermín , Nicolas, Gaël , Niida, Shumpei , Nordestgaard, Børge G. , Papenberg, Goran, Papma, Janne M., Pástor, Pau , Peters, Oliver , Popp, Julius , Molina‐Porcel, Laura , Puerta, Raquel , Pérez‐Tur, Jordi , Ramakers, Inez H.G.B. , Real, Luís Miguel , Riedel‐Heller, Steffi G. , Rodríguez‐Rodríguez, Eloy , Ross, Owen A. , Scarmeas, Nikolaos , Schneider, Anja , Solfrizzi, Vincenzo , Spalletta, Gianfranco , Tan, Eng‐King , Tegos, Thomas, Thomassen, Jesper Qvist , Tremolizzo, Lucio , Verhey, Frans, EADB, group, GR@ACE study, DemGene, EADI, GERAD, Blennow, Kaj , He, Zihuai , Jessen, Frank , Kehoe, Patrick G. , Duin, Cornelia van, Sánchez‐Juan, Pascual , Zettergren, Anna , Okada, Yukinori , Rossi, Giacomina, Gim, Jungsoo , Sims, Rebecca, Ramı́rez, Alfredo , Lambert, Jean‐Charles , Greicius, Michael D. , Mignot, Emmanuel , Moreno–Grau, Sonia , Rojas, Itziar de, Prokic, Ivana, Aarsland, Dag, García‐González, Pablo , Abdelnour, Carla , Armstrong, Nicola J. , Anthoula, Tsolaki, Archetti, Silvana, Pastor, Alfonso Arias, Athanasiu, Lavinia, Bailly, Henri, Banaj, Nerisa , Baquero, Miquel , Pastor, Ana Belén , Besse, Céline , Bizarro, Alessandra, Blesa, Rafael , Bossù, Paola , Brusco, Luis Ignacio , Buiza‐Rueda, Dolores, Bürger, Katharina , Burholt, Vanessa, Cecchetti, Roberta, Chillotti, Caterina , Ciccone, Simona, Claassen, Jurgen A.H.R., Clark, Christopher , Costantini, Emanuele Maria , Daian, Delphine , Dartigues, Jean‐François, Escott-Price, Valentina, Ewers, Michael , Fernández‐Fuertes, Marta , Ferreira, Catarina B. , Fin, Bertrand, Fließbach, Klaus , Franco-Macías, Emlio, García-González, Pablo, García‐Madrona, Sebastián, Giegling, Ina, Giorgio, Giaccone, González-Pérez, Antonio, Grande, Giulia , Green, Emma , Grimmer, Timo, Hardy, John, Hartmann, Annette M. , Harwood, Janet , Helisalmi, Seppo , Hernández, Isabel, Hoffmann, Per, Vilas, Raquel Huerto, Hulsman, Marc , Johansson, Charlotte , Kilander, Lena, Ståhlbom, Anne Kinhult, Koivisto, Anne M. , Lage, Carmen , Lerch, Ondřej , Munain, Adolfo Lopez de, Löwemark, Malin, Luckcuck, Lauren, Maier, Wolfgang, Marco, Spallazzi, Montes, Ángel Martín, Rodríguez, Carmen Martínez, Meggy, Alun, Mendoza, Silvia, Moebus, Susanne, Morelli, Laura , Möthen, Markus M., Muchnik, Carolina , Orsini, Michela, Péricard, Pierre , Piñol-Ripoll, Gerard, Polak, Thomas, Quenez, Olivier , Rábano, Alberto , Ramakers, Inez, Riederer, Peter, Rongve, Arvid, Allende, Irene Rosas, Rujescu, Dan, Sakka, Paraskevi , Sánchez‐Arjona, María Bernal, Sando, Sigrid Botne , Scamosci, Michela, Scherbaum, Norbert, Scherer, Martin, Schott, Jonathan M., Shadrin, Alexey A, Skrobot, Olivia Anna, Solfrizzi, Vincenzo, Spottke, Annika , Stordal, Eystein , Tartan, Juan Pablo, Traykov, Latchezar , Tybjærg‐Hansen, Anne, Ullgren, Abbe, Ulstein, Ingun, Dongen, Jasper Van , Wallon, David, Windle, Gill, Woods, Bob , Zulaica, Miren , Laczó, Jan , Maťoška, Václav , Piras, Federica, Ciullo, Valentina , Shofany, Jacob, Andreoni, Simona, Zompo, Maria Del, Bastiani, Patrizia, Natunen, Teemu , Antikaínen, Riitta , Abraham, Richard, Al-Chalabi, Ammar, Brayne, Carol, Brown, Kristelle S., Collinge, John, Craig, David W. , Deloukas, Pangiotis, Gerrish, Amy, 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Julie , Amouyel, Philippe , Tsolaki, Magda , Frikke-Schmidt, Ruth , Sleegers, Kristel , Toda, Tatsushi , Ingelsson, Martin , Rossi, Giacomina, Hiltunen, Mikko O. , Ozaki, Kouichi , Sims, Rebecca, Foo, Jia Nee , Flier, Wiesje M. van der , Ikeuchi, Takeshi , Mata, Ignácio F. , Ruiz, Agustı́n , Gan‐Or, Ziv , Andrade, Víctor , Amin, Najaf , Campos-Martín, Rafael , Holmans, Peter , Kleineidam, Luca , Lee, Sven J. van der , Rojas, Itziar de, Yaqub, Amber , Prokic, Ivana, Costa, Marcos R. , Chapuis, Julien , Ahmad, Shahzad , Aarsland, Dag, Alarcón‐Martín, Emilio , Alcolea, Daniel , Alegret, Montserrat , Álvarez, Ignacio , Appollonio, Ildebrando Marco , Arcaro, Marina , Athanasiu, Lavinia, Berr, Claudine , Bessi, Valentina , Binetti, Giuliano , Boschi, Silvia , Bråthen, Geir , Bresner, Catherine , Brodaty, Henry , Brookes, Keeley J. , Burholt, Vanessa, Calero, Miguel , Chêne, Geneviève , Carracedo, Ãngel , Cervera‐Carles, Laura , Charbonnier, Camille , Claassen, Jurgen A.H.R. , Conti, Elisa , 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Proceedings of the National Academy of Sciences | August 29, 2023 | Volume: 120 | Issue: 36 | Pages: No page available
Across multiancestry groups, we analyzed Human Leukocyte Antigen (HLA) associations in over 176,000 individuals with Parkinson’s disease (PD) and Alzheimer’s disease (AD) versus controls. We demonstrate that the two diseases share the same protective association at the HLA locus. HLA-specific fine-mapping showed that hierarchical protective effects of HLA-DRB1 *04 subtypes best accounted for the association, strongest with HLA-DRB1 *04:04 and HLA-DRB1 *04:07, and intermediary with HLA-DRB1 *04:01 and HLA-DRB1 *04:03. The same signal was associated with decreased neurofibrillary tangles in postmortem brains and was associated with reduced tau levels in cerebrospinal fluid and to a lower extent with increased Aβ42. Protective HLA-DRB1 *04 subtypes strongly bound the aggregation-prone tau PHF6 sequence, however only when acetylated at a lysine (K311), a common posttranslational modification central to tau aggregation. An HLA-DRB1 *04-mediated adaptive immune response decreases PD and AD risks, potentially by acting against tau, offering the possibility of therapeutic avenues.
Proteomic Biomarkers of the Apnea Hypopnea Index and Obstructive Sleep Apnea: Insights into the Pathophysiology of Presence, Severity, and Treatment Response
Cederberg, Katie L.J. , Hanif, Umaer , Sempere, Vicente Peris, Leary, Eileen , Schneider, Logan , Lin, Ling , Zhang, Jing , Blackman, Adam , Schweitzer, Paula K. , Kotagal, Suresh , Bogan, Richard , Kushida, Clete A. , Ju, Yo‐El S. , Turnbull, Chris D. , Mignot, Emmanuel , Group, The STAGES Cohort Investigator, Leary, Eileen B , Bogan, Richard , Turnbull, Chris D , Kushida, Clete A , Hedou, Julien Jacques , Morse, Anne Marie , Petousi, Nayia , Group, The STAGES Cohort Investigator
International Journal of Molecular Sciences | July 20, 2022 | Volume: 23 | Issue: 14 | Pages: 7983
Obstructive sleep apnea (OSA), a disease associated with excessive sleepiness and increased cardiovascular risk, affects an estimated 1 billion people worldwide. The present study examined proteomic biomarkers indicative of presence, severity, and treatment response in OSA. Participants (n = 1391) of the Stanford Technology Analytics and Genomics in Sleep study had blood collected and completed an overnight polysomnography for scoring the apnea–hypopnea index (AHI). A highly multiplexed aptamer-based array (SomaScan) was used to quantify 5000 proteins in all plasma samples. Two separate intervention-based cohorts with sleep apnea (n = 41) provided samples pre- and post-continuous/positive airway pressure (CPAP/PAP). Multivariate analyses identified 84 proteins (47 positively, 37 negatively) associated with AHI after correction for multiple testing. Of the top 15 features from a machine learning classifier for AHI ≥ 15 vs. AHI < 15 (Area Under the Curve (AUC) = 0.74), 8 were significant markers of both AHI and OSA from multivariate analyses. Exploration of pre- and post-intervention analysis identified 5 of the 84 proteins to be significantly decreased following CPAP/PAP treatment, with pathways involving endothelial function, blood coagulation, and inflammatory response. The present study identified PAI-1, tPA, and sE-Selectin as key biomarkers and suggests that endothelial dysfunction and increased coagulopathy are important consequences of OSA, which may explain the association with cardiovascular disease and stroke.