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Personalized Alzheimer’s disease risk
from your genomic data



Your personal risk profile,
grounded in research


Dash Genomics has partnered with HealthLytix to bring you a new model to understand your individual risk of Alzheimer’s disease using 23andMe and Ancestry.com data. Based on research from UC San Diego and UC San Francisco, this model estimates your personalized risk as a function of age and your genetic information.

macbook

Read more about the science here



Delve into the Research


The proprietary algorithm used by Dash Genomics was developed by Healthlytix, a precision health company in San Diego, and is based on cutting-edge research from UC San Diego and UC San Francisco. The research looks at age-specific risk of developing Alzheimer’s disease based on genetic markers that have never been used before for estimating risk.

Individual genetic risk of Alzheimer’s disease is quantified based on your genetic markers and age. The model looks at the similarities between your genetic profile and the average risk in the group analyzed in the research.

Find more details about the research team’s analysis, including methodology and findings, in their published research papers.


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Model from Real Science
+
Your Genomic Data

= Personalized Alzheimer’s Disease Risk



Your report will present


result summary table
Summary Section

Summarize the most relevant information about your Alzheimer's disease risk, including:

  • Cumulative risk by the current age*
  • Instantaneous risk at the current age*
  • AZ50Age

*For people younger than 60, the risk will be based on the age of 65.

Cumulative Risk Section

Based on the similarity between your genetic information to that of the research cohort analyzed, learn about your risk of developing Alzheimer’s Disease by a specific age -- your 'cumulative risk.' Compare your information to the average for different age groups.

instantaneous figure
instantaneous figure
Instantaneous Risk Section

Understand your risk of developing Alzheimer’s Disease at a specific age - your 'instantaneous risk'. Again, this estimate is based on the similarity between your genetic information to that of the research cohort analyzed. Compare your information to the average for different age groups.

5-year Risk Section*

Want to zoom into the next few years? Based on your current age and genetic profile, explore your risk of developing Alzheimer’s Disease in the next 5 years. This profile will evolve over time.


*Only available for people who are older than 60.

instantaneous figure

  View a demo report



Limitations



Disclaimers



Introduction


Dementia affects around 50 million people worldwide, with nearly 10 million new cases each year. Alzheimer’s disease is the most common form of dementia, accounting for 60-80% of cases. The condition is often associated with loss of memory, confusion, and the decline of other cognitive functions. Alzheimer’s disease can be influenced by a number of factors including genetics, lifestyle and environment.

Late Onset Alzheimer’s disease is the most common form of Alzheimer’s disease, which develops after the age of 65. Research suggests that by 80 years of age, over 10.3% of individuals face the onset of Alzheimer's disease.

Our partner, HealthLytix, a precision health company based in San Diego, has developed a new model, based on research from University of California San Diego and University of California San Francisco, that estimates your personalized risk of developing Alzheimer’s disease as a function of age based on your genetic information (subject to the limitations described below). Dash Genomics has worked with HealthLytix to bring this analysis to anyone who has had their genetic information provided by either 23andMe or Ancestry.com.


Limitations



Disclaimers



Science - How Does it Work?


Your Genetic Data. To estimate your Alzheimer's disease risk, we imported your data from and analyzed your data using the model developed by HealthLytix. This model is based on research that originally looked at 33 loci near 28 genes and the list of genes/loci evaluated as part of this research can be found in the work published by UC San Diego and UC San Francisco. The HealthLytix team has since expanded the algorithm to look at up to approximately 600,000 high quality loci that are commonly found in 23andMe and Ancestry.com data files. In certain cases, because data might not cover all the genotypes of the critical genetic loci that are used in the algorithm or because it contains known or perceived errors, we impute (infer the values for) certain genetic loci based on other parts of your genome.

Research Model. HealthLytix’s proprietary algorithm used for this analysis was developed based on research from UC San Diego and UC San Francisco to assess age-dependent risk of developing Alzheimer’s disease. While previous research has identified certain genetic markers associated with Alzheimer’s disease (such as APOE), the genetic markers newly identified by our partner researchers have never before been used to estimate risk.

This analysis estimates individual genetic risk of Alzheimer’s disease based on a person's genetic markers and age by looking at the similarities between your genetic profile and the risk of genetic profiles in the patient research cohort analyzed. You can find details about the research team’s analysis, including methodology and findings, in their published research.


Analysis Summary



Polygenic Alzheimer's Disease Risk

Personal Information
Name:   John Dash Age:   65
Data source:   23andme

Summary
Cumulative Risk by the Current Age 1 :     5.0%
Instantaneous Risk at the Current Age 2 :     7.0%
AZ50 Age 3 :     70
  1. Cumulative Risk: Risk of onset of Alzheimer’s disease by your current age.
  2. Instantaneous Risk: Risk of onset of Alzheimer’s disease within the year of your current age, if you have not already developed the condition
  3. AZ50 Age: The age when your cumulative risk of onset of Alzheimer’s disease exceeds 50%.

Individual genetic risk of Alzheimer’s disease is quantified based on your genetic markers and age. We use the proprietary research model to look at the similarities between your genetic profile and the average risk in the group analyzed in the research. Note that this model is unique to Late-Onset Alzheimer’s disease, which by definition is the onset after the age of 65. In this report, we include risk information from the age of 60, which may be the starting point of decline. Additionally, your instaneous probabilities of onset will change each year based on whether or not you’ve experienced any symptoms.

Find more details about the research team’s analysis, including methodology and findings, in their published research papers. At any point, you can reference the Product Overview to learn more about Alzheimer’s disease and this model’s science and limitations.


Cumulative Risk


Cumulative risk is a measure of the probability of onset of Alzheimer’s disease by a certain age based on the similarity of your genetic profile to the research population.

Q: What does cumulative risk mean?

Cumulative risk is measured by looking at the number of incidences (i.e. onset of Alzheimer’s disease) among people with similar genetic profiles to you in the research cohort studied over a specific time period (e.g. 70 years). As a simplified example, let’s assume that the research cohort studied had 1000 people with the same relevant genetic profile as you. If, upon analyzing the number of occurrences of onset of Alzheimer's disease up until the age of 70, we only observed one person in this group who had the onset of Alzheimer's disease, then the incidence ratio to the total population at risk over 70 years is 1/1000, which represents a cumulative risk of onset of Alzheimer's disease by the age of 70 at 0.1%.

The table and figure below provide (a) your cumulative risk (in red) of developing Alzheimer’s disease at any point up to and including a certain age based on your genetic profile and its similarity to the research cohort and (b) the baseline or "average" cumulative risk (in blue) based on the average of the research population as a whole.



Age (years) Baseline Cumulative Risk (%) Cumulative Risk Based on Your Profile (%)
Age (years) Baseline Cumulative Risk (%) Cumulative Risk Based on Your Profile (%)

Instantaneous Risk


Instantaneous Risk is a measure of the probability of onset of Alzheimer’s disease within a given year, assuming you have not yet experienced the disease.

Q: What does the instantaneous risk mean?

Instantaneous risk is also called the "annualized incidence rate," which represents the estimated proportion (in percent) of individuals with a similar genetic profile and age as yours who have not yet developed Alzheimer’s disease but will develop it within the year of each given age.

For example, if you are years old, the expected incidence rate for your age group as a whole (the baseline risk) is , meaning of people in this age group generally experience the onset of Alzheimer’s disease during the age of .

With this model, assuming that you are years old and have not already developed Alzheimer’s disease, for people with similar genetic profiles as yours, the probability of onset of Alzheimer’s disease in the current year is instead estimated to be .

The table and figure below provide (a) your instantaneous risk (in red) or probability of developing Alzheimer’s disease during each given age calculated based on your genetic profile and its similarity to the research cohort and (b) the baseline or "average" instantaneous risk (in blue) based on the average of the research population as a whole.



Age (years) Baseline Instantaneous Risk (%) Instantaneous Risk Based on Your Genetic Profile (%)
Age (years) Baseline Instantaneous Risk (%) Instantaneous Risk Based on Your Genetic Profile (%)

5-Year Risk


The graph below provides your estimated risk over the next five years of developing Alzheimer’s disease. It is generated through our research model and by combining the estimates for risk of onset by or at a certain age -- based on looking at the similarities between your genetic profile and the risk of genetic profiles in the patient research cohort analyzed. In this chart, your initial risk is reset to 0, assuming that you have not had any symptoms of Alzheimer's disease by the current age.




Next Steps


Remember, this analysis has not been validated for clinical or medical use and although this model looks at the similarity of your genetic information to the research cohort, none of the information presented here should be viewed as definitive regarding your Alzheimer’s disease risk or whether you will or will not get Alzheimer’s disease. Always consult with a medical professional before taking any actions related to your health.

You can learn more about Alzheimer’s disease through the following resources:

Have questions on the genetic information related to this research? You can find and contact a genetic counselor by visiting the National Society of Genetic Counselors.

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We support all 23andMe and Ancestry raw data files, but note that certain Ancestry files require us to impute (infer the values for) the genotypes of certain important genetic loci from other parts in your genome - which can affect accuracy.

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