horizontal y-axis title on top of y-axis

[BramVDBe]

I was wondering whether it is possible to have the title of the y-axis horizontal on top of the y-axis (so at the top left of the graph). In GraphPad prism, this is a new feature although it has always been possible to do this manually in graphpad.

ggplot2 allows you to put the title horizontal (but left from the top of the y-axis). Unfortunately, it seems (as in, I could not find it in the manual of ggprism), that ggprism has no options for doing this?

great package for the rest, superb to have graphpad layout in R!