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Grimmer T, Rajabli F, Garcia‐Serje C, Arvizu J, Larkin‐Gero E, Whitehead PL, Hamilton‐Nelson KL, Adams LD, Contreras M, Sanchez JJ, Tejada S, Mena PR, Starks TD, Cornejo‐Olivas M, Illanes‐Manrique M, Silva‐Vergara C, Cuccaro ML, Vance JM, Feliciano‐Astacio BE, Byrd GS, Beecham GW, Haines JL, Pericak‐Vance MA. Analysis of Alzheimer Disease Plasma Biomarker pTau‐181 in Individuals of Diverse Admixed Ancestral Backgrounds. Alzheimers Dement 2022. [DOI: 10.1002/alz.067869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Caban‐Holt AM, Lloyd S, Starks TD, Ford T, Adams LD, Haines JL, Beecham GW, Beecham GW, Reitz C, Cuccaro ML, Vance JM, Pericak‐Vance MA, Byrd GS. Attitudes and Beliefs About Brain Donation Among Black Americans. Alzheimers Dement 2022. [DOI: 10.1002/alz.067846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Neupane A, da Fonseca EL, Kurup JT, Pericak‐Vance MA, Martin ER, Schellenberg GD, Reitz C, Beecham GW, Cruchaga C, Fernandez V. A large‐scale genome‐wide association study of early‐onset Alzheimer disease. Alzheimers Dement 2022. [DOI: 10.1002/alz.064268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Prough MB, Caywood LJ, Clouse JE, Herington SD, Slifer SH, Dorfsman DA, Adams LD, Laux RA, Song YE, Lynn A, Fuzzell MD, Fuzzell SL, Miller SD, Miskimen KL, Main LR, Osterman MD, Ogrocki PK, Lerner AJ, Vance JM, Cuccaro ML, Haines JL, Scott WK, Pericak‐Vance MA. Plasma pTau181 is associated with impaired cognition in the Old Order Amish and adds additional information beyond the known genetic risk factors for AD. Alzheimers Dement 2022. [DOI: 10.1002/alz.067752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Naj AC, Reitz C, Rajabli F, Jun GR, Benchek P, Tosto G, Sha J, Zhu C, Kushch NA, Lee W, Haut J, Hamilton‐Nelson KL, Wheeler NR, Zhao Y, Farrell J, Chung J, Grunin M, Leung YY, Li D, da Fonseca EL, Mez JB, Palmer EL, Pillai JA, Sherva R, Song YE, Zhang X, Iqbal T, Pathak O, Valladares O, Kuzma AB, Kunkle BW, Bush WS, Wang L, Farrer LA, Haines JL, Mayeux R, Pericak‐Vance MA, Schellenberg GD. Multi‐Ancestry Genome‐wide Association Analysis of Late‐Onset Alzheimer’s Disease (LOAD) in 60,941 Individuals Identifies a Novel Cross‐Ancestry Association in
LRRC4C. Alzheimers Dement 2022. [DOI: 10.1002/alz.065822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Griswold AJ, Gu T, Van Booven D, Whitehead PL, Hamilton‐Nelson KL, Contreras M, Sanchez JJ, Tejada S, Adams LD, Mena PR, Bush WS, Silva‐Vergara C, Cornejo‐Olivas M, Illanes‐Manrique M, Cuccaro ML, Vance JM, Feliciano‐Astacio BE, Beecham GW, Pericak‐Vance MA. Transcriptomic Analysis of Whole Blood in Admixed Latinx Alzheimer Disease Cohorts. Alzheimers Dement 2022. [DOI: 10.1002/alz.067801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Akgun B, Hamilton‐Nelson KL, Kushch NA, Adams LD, Starks TD, Martinez I, Laux RA, Whitehead PL, Kunkle BW, Cuccaro ML, Vance JM, Reitz C, Byrd GS, Haines JL, Beecham GW, Pericak‐Vance MA, Rajabli F. African‐ancestry based polygenic risk scores improve Alzheimer disease risk prediction in individuals of African Ancestry. Alzheimers Dement 2022. [DOI: 10.1002/alz.067457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Hamilton‐Nelson KL, Griswold AJ, Rajabli F, Whitehead PL, Contreras M, Tejada S, Sanchez JJ, Mena PR, Adams LD, Starks TD, Silva‐Vergara C, Cuccaro ML, Vance JM, Byrd GS, Haines JL, Beecham GW, Feliciano‐Astacio BE, Pericak‐Vance MA, Celis K. Ancestral Analysis of the Presenilin‐1 G206A Variant Reveals it as a Founder Event on an African Haplotype in the Puerto Rican Population. Alzheimers Dement 2022. [DOI: 10.1002/alz.067998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Jun GR, You Y, Zhu C, Meng G, Chung J, Panitch R, Hu J, Xia W, Bennett DA, Foroud TM, Wang L, Haines JL, Mayeux R, Pericak‐Vance MA, Schellenberg GD, Au R, Lunetta KL, Ikezu T, Stein TD, Farrer LA. Protein phosphatase 2A and complement component 4 are linked to the protective effect of APOE ɛ2 for Alzheimer's disease. Alzheimers Dement 2022; 18:2042-2054. [PMID: 35142023 PMCID: PMC9360190 DOI: 10.1002/alz.12607] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 12/27/2021] [Accepted: 01/01/2022] [Indexed: 01/31/2023]
Abstract
INTRODUCTION The apolipoprotein E (APOE) ɛ2 allele reduces risk against Alzheimer's disease (AD) but mechanisms underlying this effect are largely unknown. METHODS We conducted a genome-wide association study for AD among 2096 ɛ2 carriers. The potential role of the top-ranked gene and complement 4 (C4) proteins, which were previously linked to AD in ɛ2 carriers, was investigated using human isogenic APOE allele-specific induced pluripotent stem cell (iPSC)-derived neurons and astrocytes and in 224 neuropathologically examined human brains. RESULTS PPP2CB rs117296832 was the second most significantly associated single nucleotide polymorphism among ɛ2 carriers (P = 1.1 × 10-7 ) and the AD risk allele increased PPP2CB expression in blood (P = 6.6 × 10-27 ). PPP2CB expression was correlated with phosphorylated tau231/total tau ratio (P = .01) and expression of C4 protein subunits C4A/B (P = 2.0 × 10-4 ) in the iPSCs. PPP2CB (subunit of protein phosphatase 2A) and C4b protein levels were correlated in brain (P = 3.3 × 10-7 ). DISCUSSION PP2A may be linked to classical complement activation leading to AD-related tau pathology.
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Zhang X, Farrell JJ, Tong T, Hu J, Zhu C, Wang L, Mayeux R, Haines JL, Pericak‐Vance MA, Schellenberg GD, Lunetta KL, Farrer LA. Association of mitochondrial variants and haplogroups identified by whole exome sequencing with Alzheimer's disease. Alzheimers Dement 2022; 18:294-306. [PMID: 34152079 PMCID: PMC8764625 DOI: 10.1002/alz.12396] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 05/03/2021] [Accepted: 05/04/2021] [Indexed: 12/30/2022]
Abstract
INTRODUCTION Findings regarding the association between mitochondrial DNA (mtDNA) variants and Alzheimer's disease (AD) are inconsistent. METHODS We developed a pipeline for accurate assembly and variant calling in mitochondrial genomes embedded within whole exome sequences (WES) from 10,831 participants from the Alzheimer's Disease Sequencing Project (ADSP). Association of AD risk was evaluated with each mtDNA variant and variants located in 1158 nuclear genes related to mitochondrial function using the SCORE test. Gene-based tests were performed using SKAT-O. RESULTS Analysis of 4220 mtDNA variants revealed study-wide significant association of AD with a rare MT-ND4L variant (rs28709356 C>T; minor allele frequency = 0.002; P = 7.3 × 10-5 ) as well as with MT-ND4L in a gene-based test (P = 6.71 × 10-5 ). Significant association was also observed with a MT-related nuclear gene, TAMM41, in a gene-based test (P = 2.7 × 10-5 ). The expression of TAMM41 was lower in AD cases than controls (P = .00046) or mild cognitive impairment cases (P = .03). DISCUSSION Significant findings in MT-ND4L and TAMM41 provide evidence for a role of mitochondria in AD.
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Scott WK, Ramos J, Slifer SH, Caywood LJ, Prough MB, Clouse JE, Dorfsman DA, Herington SD, Fuzzell MD, Fuzzell SL, Sewell JL, Miller SD, Osterman MD, Main LR, Miskimen KL, Lynn A, Whitehead PL, Adams LD, Laux RA, Song YE, Foroud TM, Mayeux R, Ogrocki PK, Lerner AJ, Vance JM, Cuccaro ML, Haines JL, Pericak‐Vance MA. Association of a locus on chromosome 17 with earlier age at onset of cognitive impairment in a familial Amish dataset. Alzheimers Dement 2021. [DOI: 10.1002/alz.056288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Griswold AJ, Rajabli F, Garcia‐Serje C, Hamilton‐Nelson KL, Adams LD, Tejada S, Mena PR, Starks TD, Whitehead PL, Silva‐Vergara C, Cuccaro ML, Martinez I, Illanes‐Manrique M, Cornejo‐Olivas MR, Laux RA, Caywood LJ, Reitz C, Beecham GW, Byrd GS, Feliciano‐Astacio BE, Scott WK, Haines JL, Vance JM, Pericak‐Vance MA. Assessment of AD‐related plasma biomarkers in diverse ancestral populations. Alzheimers Dement 2021. [DOI: 10.1002/alz.056258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Johnson FS, Lacroix FC, Contreras M, Baez P, Ayodele T, Martinez I, Fonseca S, Adams LD, Welch J, Jean‐Francois MN, Mena PR, Reitz C, Vance JM, Pericak‐Vance MA, Cuccaro ML, Beecham GW. Leveraging videoconferencing supports the continuity of Alzheimer research during the COVID‐19 pandemic and beyond. Alzheimers Dement 2021. [PMCID: PMC9011423 DOI: 10.1002/alz.056484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Background The COVID‐19 pandemic has placed a demand on researchers to limit in‐person contact with participants, greatly impacting Alzheimer Disease (AD) research. To address this problem, we describe here an approach to using digital technology to continue nationwide clinical recruitment and ascertainment of biological samples while adhering to COVID‐19 guidelines and travel restrictions. Method To accomplish this, we considered a videoconferencing approach for remote delivery of cognitive assessments. A multi‐site panel of neurologists and clinical psychologists and a detailed literature review ensured a protocol that captures the best‐practices for administering assessments through videoconferencing while ensuring consistency between remote and in‐person administration. Clinical coordinators underwent training to ensure good agreement with in‐person administration. Most aspects of the cognitive assessments easily transferred to videoconferencing, though Trail Making A and B, and Digit Symbol‐Coding were removed to protect the integrity of the evaluation. Additionally, we coordinated the collection of biological samples with a national company, Quest Diagnostics, to provide phlebotomy services at the participant’s residence. All protocols were developed under the guidance of the Human Subjects Research Office at the University of Miami and with approval of local IRB. Result Our clinical coordinators completed over two dozen remote assessments using these protocols. Both cases and controls were enrolled, across various ethnic populations within our study. The distributions of age and 3MS were similar between in‐person and remote assessments. The uptake of videoconferencing enrollment varied among the age groups, level of impairment, at‐home support system and telemedicine readiness. For example, earlier‐onset groups had the best uptake, while older‐onset groups showed the least uptake due to a higher prevalence of telemedicine unreadiness (Lam et al., 2020; Bossen et al.,2015). Conclusion This study demonstrates that remote enrollment and ascertainment of biological samples through videoconferencing and partnering with national mobile phlebotomy services is feasible. This approach allows researchers to continue ascertainment efforts while maintaining their participants’ autonomy through informed consent and privacy throughout the process and minimizing their exposure to COVID‐19.
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Cornejo‐Olivas MR, Mena PR, Illanes‐Manrique M, Adams LD, Marca V, Isasi R, Castro‐Suarez S, Beecham GW, Mejía KK, Vance JM, Manrique‐Enciso C, Cuccaro ML, Meza‐Vega M, Pericak‐Vance MA. Clinical profile of an Alzheimer´s disease cohort in the Peruvian population. Alzheimers Dement 2021. [DOI: 10.1002/alz.055631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Nuytemans K, Vasquez ML, Rajabli F, Celis K, Oron O, Van Booven D, Hofmann NK, Argenziano M, Chesi A, Grant SF, Brown CD, Griswold AJ, Pericak‐Vance MA, Vance JM. Ancestry‐specific intronic variants on the
APOE
ɛ4 haplotype influence enhancer activity and interaction with
APOE
promoter. Alzheimers Dement 2021. [DOI: 10.1002/alz.055266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Oron O, Rodgers JP, Vasquez ML, Celis K, Maddy KS, Chambers CM, Feliciano‐Astacio BE, Beecham GW, Cuccaro ML, Cukier HN, Blurton‐Jones M, Pericak‐Vance MA, Vance JM, Dykxhoorn DM. Transgenic
APOEε4/4
overexpression induces reactivity in astrocytes with a European
APOEε4/4
local ancestry, but not in astrocytes with an African
APOEε4/4
local ancestry. Alzheimers Dement 2021. [DOI: 10.1002/alz.056397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Nudelman KN, Faber KM, Lacy K, Wilmes K, Marshall JD, Case KR, Mitchell CM, Hobbick CC, Kunkle BW, Pericak‐Vance MA, Cuccaro ML, Vance JM, Mena PR, Dalgard CL, Mayeux R, Vardarajan BN, Foroud TM. ADSP follow‐up study: NCRAD biospecimens. Alzheimers Dement 2021. [DOI: 10.1002/alz.056242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Prough MB, Caywood LJ, Clouse JE, Herington SD, Slifer SH, Dorfsman DA, Adams LD, Laux RA, Song YE, Lynn A, Fuzzell MD, Fuzzell SL, Sewell JL, Miller SD, Miskimen KL, Main LR, Osterman MD, Ogrocki PK, Lerner AJ, Ramos J, Vance JM, Cuccaro ML, Haines JL, Scott WK, Pericak‐Vance MA. Preferential preservation of constructional praxis delayed recall compared to word list delayed recall in the Amish. Alzheimers Dement 2021. [DOI: 10.1002/alz.056386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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da Fonseca EL, Jean‐Francois MN, Kurup JT, Slifer SH, Martin ER, Kunkle BW, Schellenberg GD, Pericak‐Vance MA, Fernandez V, Cruchaga C, Reitz C, Beecham GW. Heritability analyses show partial genetic overlap between (non‐Mendelian) early and late onset Alzheimer disease due to an intriguing APOE effect. Alzheimers Dement 2021. [DOI: 10.1002/alz.056143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Kunkle BW, Jean‐Francois MN, Hamilton‐Nelson KL, Schmidt MA, Naj AC, Martin ER, Vance JM, Cuccaro ML, Rajabli F, Jun GR, Wang L, Farrer LA, Haines JL, Byrd GS, Schellenberg GD, Mayeux R, Beecham GW, Pericak‐Vance MA, Reitz C. APOE‐stratified genome‐wide association analysis identifies novel Alzheimer disease candidate risk loci for African Americans. Alzheimers Dement 2021. [DOI: 10.1002/alz.056383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Starks TD, Caban‐Holt AM, Williams K, Adams LD, Haines JL, Beecham GW, Reitz C, Cuccaro ML, Vance JM, Pericak‐Vance MA, Byrd GS. Outreach and recruitment of African Americans for Alzheimer’s disease studies during the COVID‐19 pandemic. Alzheimers Dement 2021. [PMCID: PMC9011553 DOI: 10.1002/alz.056532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Background Recruiting African Americans in AD studies remains a challenge, particularly during a pandemic, where major health disparities in this population are illuminated. The recruitment literature suggests myriad factors that contribute to the underrepresentation of AAs, including, but not limited to “mistrust” in researchers and their institutions. Maintaining a continuous presence in the AA community builds trust even when traditional outreach methods are not allowed. We continued to provide outreach and recruitment opportunities through COVID education and food for families as we educated them about AD, and opportunities for study participation. Method While our traditional outreach methods for recruiting AAs were interrupted, we continued to conduct AD outreach using virtual platforms, mobile phone calls, family conference calls and food distributions. We hosted nine webinars on COVID‐19 to maintain a presence in local and national AA communities and to remain connected to existing AD participants. We reached over 160,000 persons through webinars and social media. We established new relationship new faith leaders in the AA community who co‐hosted COVID‐19 webinars and also expressed interest in forming partnerships on AD education. In addition, we hosted food drives in AA communities that not only addressed food insecurity and COVID prevention, but also AD education and AD research opportunities. At the food drives we distributed bags with masks, hand sanitizers, AD brochures, booklets and study participation information. Result Between October and December of 2020, 64 AAs who attended food drives expressed interest in AD studies that required blood draws and cognitive testing. Fifteen enrolled in our genetic study, 15 requested additional follow‐up and 13 expressed interest in participating in more than one study. Conclusion Prior research suggests that recruiting AAs into AD studies requires continuous engagement. We used multiple strategies to maintain contact with the AA community and existing research participants, and successfully increased enrollment in the last quarter of the year. Maintaining consistent and continuous engagement facilitates trustworthiness with AAs and yields positive recruitment outcomes, even in a pandemic where traditional recruitment methods are limited.
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Main LR, Song YE, Laux RA, Miskimen KL, Cuccaro ML, Ogrocki PK, Lerner AJ, Vance JM, Fuzzell MD, Fuzzell SL, Sewell JL, Caywood LJ, Prough MB, Adams LD, Clouse JE, Herington SD, Scott WK, Pericak‐Vance MA, Haines JL. Genome‐wide association for protective variants in Alzheimer’s disease in the Midwestern Amish. Alzheimers Dement 2021. [DOI: 10.1002/alz.056363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Lacroix FC, Adams LD, Inciute JD, Welch J, Starks TD, Laux RA, Byrd GS, Haines JL, Beecham GW, Cuccaro ML, Vance JM, Pericak‐Vance MA, Rajabli F. Does higher educational attainment influence functional capabilities among African Americans with Alzheimer’s disease? Alzheimers Dement 2021. [DOI: 10.1002/alz.056302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Jun GR, Zhu C, Panitch R, Chung J, Hu J, Wang L, Lunetta KL, Haines JL, Mayeux R, Pericak‐Vance MA, Schellenberg GD, Stein TD, Farrer LA. Mechanism for the protective effect of
APOE
ε2 against Alzheimer disease is linked to tau and the classical complement pathway. Alzheimers Dement 2020. [DOI: 10.1002/alz.044881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Wijsman EM, Day TR, Thornton TA, Horimoto AR, Blue EE, Bis JC, Sohi HK, Nato AQ, Nafikov RA, Navas P, Saad M, Tsuang DW, Barral S, Vardarajan BN, Beecham GW, Martin ER, van Duijn CM, Pericak‐Vance MA, Mayeux R. Analysis of individual families implicates noncoding DNA variation and multiple biological pathways in Alzheimer’s disease risk. Alzheimers Dement 2020. [DOI: 10.1002/alz.046456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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