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In the last few decades, forward genetics approaches have been extensively used to identify gene function. Essentially, forward genetics is the elucidation of the genetic basis of a specific phenotype by screening a population containing random genomic modifications that alter gene function. These approaches have shed light on some essential gene functions in development and disease and have expanded the realm of understanding for genetic disorders. Due to the availability of efficient mutagenesis methods, phenotyping techniques, reliable validation, comprehensive sequence information and translational potential, mouse models are favored for forward genetics approaches. However, in this post-genomic CRISPR-Cas9 era, the relevance and future of forward genetics was brought into question. With more than 7300 mouse strains archived and close interactions with several leading mouse researchers around the world, INFRAFRONTIER - the European Research Infrastructure for mouse models organised a panel discussion on forward genetics at the International Mammalian Genome Conference 2018 to discuss the future of forward genetics as well as challenges faced by researchers using this approach in the current research environment. The commentary presents an overview of this discussion.