Molecular chaperones and heat shock proteins (HSP) represented by endoplasmin, heat shock 70 kDa protein 1B, heat shock protein beta‐1, T‐complex protein 1 subunit beta, T‐complex protein 1 subunit eta and T‐complex protein 1 subunit epsilon were also identified in this study as differentially altered due to reduced levels of CA I. HSPs are known to be expressed at the high amount in a wide range of tumours. The gene discussed is CA1; the disease is neoplasm.