Deferiprone decreases cell proliferation. Effect of 7 d-treatment with deferiprone (0–150 μM) on (A) control (open symbol) and patient fibroblasts and on (C) control (open symbol) and frataxin-depleted SK-N-AS cells. A light microscope view (B) (×4) of control (a, b, c) and patient (d, e, f) fibroblasts, before treatment (18 h after seeding; a, d), or 7 d in the absence (b, e) or presence (c, f) of 150 μM deferiprone. Error bars correspond to 1 SE (n = 3); *** denotes p < 0.001; n.s. non significant. Experimental conditions as described under Methods.