Free IGF-1 correlated directly with tumour vimentin (ρ=0.594; P=0.021), and inversely with E-cadherin expression (ρ=−0.389; P=0.152) and the tumour E-cadherin/vimentin ratio (ρ=−524, P=0.007). The gene discussed is CDH1; the disease is neoplasm.