The rising global burden of cancer has intensified the search for novel anticancer agents derived from natural sources, with mushrooms emerging as a rich source of bioactive metabolites. This study provides the first comparative evaluation of the toxic A. bresadolanus and the edible A. hortensis in terms of their fatty acid methyl ester (FAME) profiles and antiproliferative effects against human lung (A549) and colon (HT-29) carcinoma cell lines, alongside cytotoxicity toward normal 3T3 fibrobla