New Diagnostic Guidelines and DTC Testing for Alzheimer’s Disease
Last month, the National Institute on Aging and the Alzheimer’s Association issued new diagnostic guidelines that divide Alzheimer’s disease into three distinct stages, reflecting recent evidence that the disease begins to affect the brain years before symptoms become evident. The expanded definition of Alzheimer’s includes two new phases of the disease:
(1) presymptomatic and (2) mildly symptomatic but pre-dementia, along with (3) dementia caused by Alzheimer’s. This reflects current thinking that Alzheimer’s begins creating distinct and measurable changes in the brains of affected people years, perhaps decades, before memory and thinking symptoms are noticeable.
At least for the moment, the new guidelines are intended to be used only with patients enrolled in clinical trials, making them more of a work in progress and not a standardized method of determining disease onset in Alzheimer’s patients.
Federal Alzheimer’s Activity. The revisions to the diagnostic guidelines – the first in nearly three decades – indicate how far scientists have come in understanding the disease and are reflected in new legislation introduced in both the Senate (S.738) and the House (H.R.1386) that would expand Medicare coverage of Alzheimer’s to cover “comprehensive Alzheimer’s disease diagnosis and services,” including for individuals who fall under stage (1) or (2) of the new guidelines.
Evaluating the NIH’s New Genetic Testing Registry
This morning the NIH announced plans to create a publicly accessible registry of genetic tests. The Genetic Testing Registry (GTR) is expected to be available in 2011 and will contain information voluntarily submitted by genetic test providers. The news is significant and carries implications for clinical genetic testing laboratories, personal genomics service providers and individual purchasers of genetic tests.
Many details of the GTR are yet to come, with NIH promising to “engage stakeholders – such as genetic test developers, test kit manufacturers, health care providers, patients and researchers – for their insights on the best way to collect and display test information.” While the GTR isn’t expected to launch until next year, and there is time to fill in the details, the questions and answers section of the GTR’s new website helpfully addresses several of the most important features of the registry.
This post looks at what we know about the GTR today, and considers what the GTR’s ultimate implementation might mean for the development and regulation of genetic testing. (Note that the inset orange questions, and the text that immediately follows each question, is taken directly from the GTR question and answer page.)
Is There an Obligation to Return Genetic Data to Research Participants? Kaiser Responds to 23andMe’s TEDMED Criticism
Earlier today, in the latest installment of the What ELSI is New? series, Daniel MacArthur asked a question that has cropped up repeatedly in recent weeks and months as part of the broader discourse surrounding genetic research and commerce: what rights should individuals have to gain access to their personal genetic or genomic data?
MacArthur’s position – that research participants should generally be provided with complete access to their own genetic data upon request – is one that continues to remain a minority position. It finds support in research initiatives such as the Personal Genome Project (PGP) and (to a lesser extent) the Coriell Personalized Medicine Collaborative (CPMC), but returning research results has generally been eschewed by other large-scale genetic research projects, including Kaiser Permanente’s recently announced Research Program on Genes, Environment, & Health (RPGEH).
Last month, the Genomics Law Report examined the RPGEH and its reluctance to return genetic data to a participant population that is expected to quickly grow to 100,000 or more Kaiser patients. RPGEH’s decision not to return data to its participants was under the microscope again last week at TEDMED 2009 when 23andMe co-founder Anne Wojcicki criticized Kaiser for planning to genotype RPGEH participants without offering them the ability to review their data.
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