{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"institution":[{"name":"medRxiv"}],"indexed":{"date-parts":[[2026,1,16]],"date-time":"2026-01-16T12:27:36Z","timestamp":1768566456409,"version":"3.49.0"},"posted":{"date-parts":[[2023,11,7]]},"group-title":"Genetic and Genomic Medicine","reference-count":16,"publisher":"openRxiv","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"accepted":{"date-parts":[[2023,11,9]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                <jats:sec>\n                  <jats:title>Background<\/jats:title>\n                  <jats:p>\n                    Damaging coding variants in\n                    <jats:italic>GBA1<\/jats:italic>\n                    are a genetic risk factor for rapid eye movement sleep behavior disorder (RBD), which is a known early feature of synucleinopathies. Recently, a population-specific non-coding variant (rs3115534) was found to be associated with PD risk and earlier disease onset in individuals of African ancestry.\n                  <\/jats:p>\n                <\/jats:sec>\n                <jats:sec>\n                  <jats:title>Objectives<\/jats:title>\n                  <jats:p>\n                    To investigate whether the\n                    <jats:italic>GBA1<\/jats:italic>\n                    rs3115534 PD risk variant is associated with RBD.\n                  <\/jats:p>\n                <\/jats:sec>\n                <jats:sec>\n                  <jats:title>Methods<\/jats:title>\n                  <jats:p>\n                    We studied 709 persons with PD and 776 neurologically healthy controls from Nigeria. The\n                    <jats:italic>GBA1<\/jats:italic>\n                    rs3115534 risk variant status was imputed from previous genotyping for all. Symptoms of RBD were assessed with the RBD screening questionnaire (RBDSQ).\n                  <\/jats:p>\n                <\/jats:sec>\n                <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>\n                    The non-coding\n                    <jats:italic>GBA1<\/jats:italic>\n                    rs3115534 risk variant is associated with possible RBD in individuals of Nigerian origin (Beta = 0.3640, SE = 0.103, P =4.093e-04), as well as after adjusting for PD status (Beta = 0.2542, SE = 0.108, P = 0.019) suggesting that this variant may have the same downstream consequences as\n                    <jats:italic>GBA1<\/jats:italic>\n                    coding variants.\n                  <\/jats:p>\n                <\/jats:sec>\n                <jats:sec>\n                  <jats:title>Conclusions<\/jats:title>\n                  <jats:p>\n                    We show that the non-coding\n                    <jats:italic>GBA1<\/jats:italic>\n                    rs3115534 risk variant is associated with increased RBD symptomatology in Nigerians with PD. Further research is required to assess association with polysomnography-defined RBD.\n                  <\/jats:p>\n                <\/jats:sec>","DOI":"10.1101\/2023.11.07.23298092","type":"posted-content","created":{"date-parts":[[2023,11,7]],"date-time":"2023-11-07T15:55:21Z","timestamp":1699372521000},"source":"Crossref","is-referenced-by-count":0,"title":["The non-coding\n                  <i>GBA1<\/i>\n                  rs3115534 variant is associated with REM sleep behavior disorder in Nigerians"],"prefix":"10.64898","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6461-2653","authenticated-orcid":false,"given":"Oluwadamilola O.","family":"Ojo","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sara","family":"Bandres-Ciga","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7978-1051","authenticated-orcid":false,"given":"Mary B.","family":"Makarious","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8944-5716","authenticated-orcid":false,"given":"Peter Wild","family":"Crea","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dena G.","family":"Hernandez","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2866-7777","authenticated-orcid":false,"given":"Henry","family":"Houlden","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2420-4449","authenticated-orcid":false,"given":"Mie","family":"Rizig","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5606-700X","authenticated-orcid":false,"given":"Andrew 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