RESUMO
PURPOSE: To assess the likely pathogenic/pathogenic (LP/P) variants rates in Mendelian dementia genes and the moderate-to-strong risk factors rates in patients with Alzheimer disease (AD). METHODS: We included 700 patients in a prospective study and performed exome sequencing. A panel of 28 Mendelian and 6 risk-factor genes was interpreted and returned to patients. We built a framework for risk variant interpretation and risk gradation and assessed the detection rates among early-onset AD (EOAD, age of onset (AOO) ≤65 years, n = 608) depending on AOO and pedigree structure and late-onset AD (66 < AOO < 75, n = 92). RESULTS: Twenty-one patients carried a LP/P variant in a Mendelian gene (all with EOAD, 3.4%), 20 of 21 affected APP, PSEN1, or PSEN2. LP/P variant detection rates in EOAD ranged from 1.7% to 11.6% based on AOO and pedigree structure. Risk factors were found in 69.5% of the remaining 679 patients, including 83 (12.2%) being heterozygotes for rare risk variants, in decreasing order of frequency, in TREM2, ABCA7, ATP8B4, SORL1, and ABCA1, including 5 heterozygotes for multiple rare risk variants, suggesting non-monogenic inheritance, even in some autosomal-dominant-like pedigrees. CONCLUSION: We suggest that genetic screening should be proposed to all EOAD patients and should no longer be prioritized based on pedigree structure.
Assuntos
Doença de Alzheimer , Sequenciamento do Exoma , Predisposição Genética para Doença , Testes Genéticos , Glicoproteínas de Membrana , Presenilina-2 , Receptores Imunológicos , Humanos , Doença de Alzheimer/genética , Doença de Alzheimer/diagnóstico , Testes Genéticos/métodos , Feminino , Masculino , Idoso , Fatores de Risco , Estudos Prospectivos , Pessoa de Meia-Idade , Presenilina-2/genética , Presenilina-1/genética , Linhagem , Idade de Início , Precursor de Proteína beta-Amiloide/genética , Idoso de 80 Anos ou maisRESUMO
OBJECTIVES: The burden on care partners, particularly once dementia emerges, is among the greatest of all caregiving groups. This meta-review aimed to (1) synthesis evidence on the self-reported needs of care partners supporting people living with neurodegenerative disorders; (2) compare the needs according to care partner and care recipient characteristics; and (3) determine the face validity of existing care partner needs assessment tools. METHODS: We conducted a systematic review of reviews involving a thematic synthesis of care partner needs and differences in needs according to demographic and other characteristics. We then conducted a gap analysis by identifying the themes of needs from existing needs assessment tools specific to dementia and cross-matching them with the needs derived from the thematic synthesis. RESULTS: Drawing on 17 published reviews, the identified range of needs fell into four key themes: (1) knowledge and information, (2) physical, social and emotional support, (3) care partner self-care, and (4) care recipient needs. Needs may differ according to disease trajectory, relationship to the care recipient, and the demographic characteristics of the care partner and recipient. The 'captured needs' range between 8% and 66% across all the included needs assessment tools. CONCLUSIONS: Current tools do not fully or adequately capture the self-identified needs of care partners of people living with neurodegenerative disorders. Given the high burden on care partners, which has been further exacerbated by the COVID-19 (SARS CoV-2) pandemic, the needs assessment tools should align with the self-reported needs of care partners throughout the caregiving trajectory to better understand unmet needs and target supportive interventions.