This system is developed based on the Red Cotton Knockout Lethality Assessment Database. Through in-depth mining and analysis of gene dependency data, the results are displayed to users by visual images. Knockout Lethality Assessment Database contains 30 million CRISPR library screening data and 3500+ KO project data, covering the knockout results of nearly 20,000 genes in 1400+ cell types. Just enter the gene name and cell name to assess the project feasibility.