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Embracing Monogenic Parkinson's Disease: The MJFF Global Genetic PD Cohort.

Mov Disord. 2023 Jan 24. doi: 10.1002/mds.29288. Epub ahead of print. PMID: 36692014.

Authors/Editors: Vollstedt EJ, Schaake S, Lohmann K, Padmanabhan S, Brice A, Lesage S, Tesson C, Vidailhet M, Wurster I, Hentati F, Mirelman A, Giladi N, Marder K, Waters C, Fahn S, Kasten M, Brüggemann N, Borsche M, Foroud T, Tolosa E, Garrido A, Annesi G, Gagliardi M, Bozi M, Stefanis L, Ferreira JJ, Correia Guedes L, Avenali M, Petrucci S, Clark L, Fedotova EY, Abramycheva NY, Alvarez V, Menéndez-González M, Jesús Maestre S, Gómez-Garre P, Mir P, Belin AC, Ran C, Lin CH, Kuo MC, Crosiers D, Wszolek ZK, Ross OA, Jankovic J, Nishioka K, Funayama M, Clarimon J, Williams-Gray CH, Camacho M, Cornejo-Olivas M, Torres-Ramirez L, Wu YR, Lee-Chen GJ, Morgadinho A, Pulkes T, Termsarasab P, Berg D, Kuhlenbäumer G, Kühn AA, Borngräber F, de Michele G, De Rosa A, Zimprich A, Puschmann A, Mellick GD, Dorszewska J, Carr J, Ferese R, Gambardella S, Chase B, Markopoulou K, Satake W, Toda T, Rossi M, Merello M, Lynch T, Olszewska DA, Lim SY, Ahmad-Annuar A, Tan AH, Al-Mubarak B, Hanagasi H, Koziorowski D, Ertan S, Genç G, de Carvalho Aguiar P, Barkhuizen M, Pimentel MMG, Saunders-Pullman R, van de Warrenburg B, Bressman S, Toft M, Appel-Cresswell S, Lang AE, Skorvanek M, Boon AJW, Krüger R, Sammler EM, Tumas V, Zhang BR, Garraux G, Chung SJ, Kim YJ, Winkelmann J, Sue CM, Tan EK, Damásio J, Klivényi P, Kostic VS, Arkadir D, Martikainen M, Borges V, Hertz JM, Brighina L, Spitz M, Suchowersky O, Riess O, Das P, Mollenhauer B, Gatto EM, Petersen MS, Hattori N, Wu RM, Illarioshkin SN, Valente EM, Aasly JO, Aasly A, Alcalay RN, Thaler A, Farrer MJ, Brockmann K, Corvol JC, Klein C; MJFF Global Genetic Parkinson's Disease Study Group.
Publication Date: 2023


Background As gene-targeted therapies are increasingly being developed for Parkinson's disease (PD), identifying and characterizing carriers of specific genetic pathogenic variants is imperative. Only a small fraction of the estimated number of subjects with monogenic PD worldwide are currently represented in the literature and availability of clinical data and clinical trial-ready cohorts is limited.

The objectives are to (1) establish an international cohort of affected and unaffected individuals with PD-linked variants; (2) provide harmonized and quality-controlled clinical characterization data for each included individual; and (3) further promote collaboration of researchers in the field of monogenic PD.

Methods We conducted a worldwide, systematic online survey to collect individual-level data on individuals with PD-linked variants in SNCA, LRRK2, VPS35, PRKN, PINK1, DJ-1, as well as selected pathogenic and risk variants in GBA and corresponding demographic, clinical, and genetic data. All registered cases underwent thorough quality checks, and pathogenicity scoring of the variants and genotype–phenotype relationships were analyzed.

Results We collected 3888 variant carriers for our analyses, reported by 92 centers (42 countries) worldwide. Of the included individuals, 3185 had a diagnosis of PD (ie, 1306 LRRK2, 115 SNCA, 23 VPS35, 429 PRKN, 75 PINK1, 13 DJ-1, and 1224 GBA) and 703 were unaffected (ie, 328 LRRK2, 32 SNCA, 3 VPS35, 1 PRKN, 1 PINK1, and 338 GBA). In total, we identified 269 different pathogenic variants; 1322 individuals in our cohort (34%) were indicated as not previously published.

Conclusions Within the MJFF Global Genetic PD Study Group, we (1) established the largest international cohort of affected and unaffected individuals carrying PD-linked variants; (2) provide harmonized and quality-controlled clinical and genetic data for each included individual; (3) promote collaboration in the field of genetic PD with a view toward clinical and genetic stratification of patients for gene-targeted clinical trials. © 2023 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.

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