Correction to: Genetics in Medicine 2020; https://doi.org/10.1038/s41436-019-0746-0, published online 22 January 2020.

The original version of this Article contained errors in the third row of the last column (PS2) of Table 1: ">2 different tissues" should read "≥2 different tissues" and the two instances of "0%" should be "not detected." These have now been corrected in both the PDF and HTML versions of the Article.