GPX4, NQO1, and GSH are essential to counteract the formation of lipid peroxides in the biological membranes, thus we analyzed lipid peroxidation in X-ALD fibroblasts by following the increase of C-11 Bodipy (581/591) green fluorescence in cultured cells [24]. This evidence concerns the gene GPX4 and X-linked adrenoleukodystrophy.