The feline carcinoma-related metabolites were collected from the open-source data published by Zheng and co-authors and are presented in Table . The metabolites were selected when they had a p-value less than 0.05 and a fold change value over 1.5. The HMDB was then used to choose random metabolites and to obtain their SMILES (Simplified Molecular-Input Line-Entry System). The variable importance of projection (VIP) values assess the importance of each metabolite to FMC. The randomly selected metabolites were obtained from HMDB using a random number generator without repetitions and are labeled with the corresponding label "random" in the rightmost column.