I am a co-author on another paper about colocalisation posted on arXiv. It’s a novel approach, using Bayesian inference based on Approximate Bayes Factors derived from p values, making colocalisation testing much more practical when data is not often as open access as claimed. My co-author, Vincent Plagnol, has written a nice post about it on Haldane’s Sieve.

The software to conduct these tests has been included in my coloc package, and I think such a change deserves a bump in version, so coloc v2.0 is now available on CRAN, together with a new vignette, explaining the different methods of analysis available, but see the papers ^{1} ^{2} for the nitty gritty.