The Medullo-Model To Subtypes (MM2S) classifier stratifies single MB gene expression profiles without reference samples or replicates. Our pathway-centric approach facilitates subtype predictions of patient samples, and model systems including cell lines and mouse models. The manuscript link is: http://www.sciencedirect.com/science/article/pii/S0888754315000774 The MM2S and MM2Sdata packages are available on CRAN: ** To install the MM2S and the MM2Sdata packages, from within an R terminal, please type: install.packages("MM2S", repos="http://cran.r-project.org") library(MM2S) install.packages("MM2Sdata", repos="http://cran.r-project.org") library(MM2Sdata) ** Load the libraries in R: library(MM2S) library(MM2Sdata) ** To install dependencies of the package, please run the following in R: install.packages("BiocManager", repos="http://cran.r-project.org") rr <- BiocManager::install(pkgs=c("GSVA", "kknn", "lattice", "pheatmap"), dependencies=TRUE, type="source", destdir=".")