Fig. 1
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12881-019-0768-0/MediaObjects/12881_2019_768_Fig1_HTML.png)
Distribution of ancestry MDS coordinates in the study cohort. The three ancestry MDS coordinates were not significantly different between the aCA cases and non-aCA cases in the study cohort, suggesting pathology was not confounded by ancestry in our study population. p-values were calculated by Kolmogorov-Smirnov test