Selected Events Linked by Evolutionary Conditions in Cancer // Implements the 'SelectSim' methodology for identifying patterns of co-occurrence and mutual exclusivity between functional genomic alterations in cancer cohorts. The package processes mutation annotation data, constructs alteration matrices, estimates expected alteration-pair frequencies, and quantifies deviations associated with selective interactions. The methodology is described in Iyer et al. (2026) doi:10.1038/s41588-026-02661-4.