Positiva genotoxiska effekter avseende klastogenicitet (kromosomavvikelser) erhölls i ett mammaliecellstest in vitro (Chinese hamster ovary) i närvaro av metabolisk aktivering. ###>Positive genotoxic effects were obtained for imatinib in an in vitro mammalian cell assay (Chinese hamster ovary) for clastogenicity (chromosome aberration) in the presence of metabolic activation.