We next examined the type of cell death occurring in acidic cancer cells and found that ACOX1 inhibition in the presence of DHA led to a net increase in double‐positive 7‐AAD/AnnexinV cells with an apparent transition through the 7‐ADD‐negative Annexin V‐positive quadrant, supporting apoptosis as the main cell death pathway (Figure 4A,B). This evidence concerns the gene ACOX1 and cancer.