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Amyloid imaging in Alzheimer's disease: a potential new era of personalized medicine?
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- Leuzy, A (author)
- Karolinska Institutet
- Zimmer, ER (author)
- Gauthier, S (author)
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- Rosa-Neto, P (author)
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- (creator_code:org_t)
- Walter de Gruyter GmbH, 2014
- 2014
- English.
- In: TRANSLATIONAL NEUROSCIENCE. - : Walter de Gruyter GmbH. - 2081-3856 .- 2081-6936. ; 5:1, s. 51-56
- Journal article (other academic/artistic)
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- Recent advances along clinical and neuropathological lines, as well as in our ability to detect the deposition of β-amyloid (Aβ) in vivo using positron emission tomography (PET), have helped redefine Alzheimer’s disease (AD) as a dynamic clinicobiological entity. On the basis of these advances, AD is now conceptualized as a continuum comprising asymptomatic, minimally symptomatic, and dementia phases, with detection of brain Aβ — in particular, via PET amyloid imaging — central to the diagnostic process. In this respect, [18F]florbetapir (Amyvid™) and [18F]flutemetamol (Vizamyl™) have recently received approval for clinical use from the Food and Drug Administration (FDA) and the European Medicines Agency (EMA), with additional radiofluorinated tracers for detection of Aβ in phase III trials. Recent initiatives such as the Alzheimer’s Disease Neuroimaging Initiative (ADNI) suggest that Aβ production, oligomerization and aggregation begins many years, possibly decades, before detectable cognitive impairment, with Aβ shown to associate with cognitive decline and conversion to dementia. While personalized medicine has now emerged as a prospect for the field, the recent decision by the Centers for Medicare & Medicaid Services (CMS) — who declined to cover the cost of amyloid PET imaging citing insufficient evidence to support its clinical utility — highlights that such a move may be premature.
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