Title |
No Genetic Overlap Between Circulating Iron Levels and Alzheimer’s Disease
|
---|---|
Published in |
Journal of Alzheimer's Disease, January 2017
|
DOI | 10.3233/jad-170027 |
Pubmed ID | |
Authors |
Michelle K Lupton, Beben Benyamin, Petroula Proitsi, Dale R Nyholt, Manuel A Ferreira, Grant W Montgomery, Andrew C Heath, Pamela A Madden, Sarah E Medland, Scott D Gordon, Simon Lovestone, Magda Tsolaki, Iwona Kloszewska, Hilkka Soininen, Patrizia Mecocci, Bruno Vellas, John F Powell, Ashley I Bush, Margaret J Wright, Nicholas G Martin, John B Whitfield |
Abstract |
Iron deposition in the brain is a prominent feature of Alzheimer's disease (AD). Recently, peripheral iron measures have also been shown to be associated with AD status. However, it is not known whether these associations are causal: do elevated or depleted iron levels throughout life have an effect on AD risk? We evaluate the effects of peripheral iron on AD risk using a genetic profile score approach by testing whether variants affecting iron, transferrin, or ferritin levels selected from GWAS meta-analysis of approximately 24,000 individuals are also associated with AD risk in an independent case-control cohort (n∼10,000). Conversely, we test whether AD risk variants from a GWAS meta-analysis of approximately 54,000 account for any variance in iron measures (n∼9,000). We do not identify a genetic relationship, suggesting that peripheral iron is not causal in the initiation of AD pathology. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
Australia | 3 | 38% |
Sweden | 1 | 13% |
United Kingdom | 1 | 13% |
Unknown | 3 | 38% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 5 | 63% |
Scientists | 2 | 25% |
Practitioners (doctors, other healthcare professionals) | 1 | 13% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 47 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Master | 7 | 15% |
Student > Ph. D. Student | 6 | 13% |
Researcher | 5 | 11% |
Other | 3 | 6% |
Professor | 2 | 4% |
Other | 4 | 9% |
Unknown | 20 | 43% |
Readers by discipline | Count | As % |
---|---|---|
Medicine and Dentistry | 6 | 13% |
Psychology | 6 | 13% |
Biochemistry, Genetics and Molecular Biology | 3 | 6% |
Neuroscience | 3 | 6% |
Agricultural and Biological Sciences | 2 | 4% |
Other | 5 | 11% |
Unknown | 22 | 47% |