IGF1 and acute lymphoblastic leukemia: We found no significant differences between ALL survivors and controls in serum Insulin Growth Factor 1 (s-IGF-1) 216 (81–265) vs 189 (78–284) μg/L, Thyroid Stimulating Hormone (s-TSH) 1.9 (0.01–3.6) vs 1.9 (0.6–4.9) mIE/L, free T4 15 (12–25) vs 16 (12–22) pmol/L, p-cortisol 449 (182–1040) vs 445 (86–826) nmol/L, s-testosterone in men 19.5 (9–98) vs 9.8 (0.5–27.1) nmol/L, s-estradiol in women 266 (81–1028) vs 108 (40–548) pmol/L (all P>0.05).