Joshi et al., measured gene expressions of thymidylate synthase 1 (TS1), glutathione S-transferase π (GSTP1), and excision cross-complementing gene 1 (ERCC1) by quantitative RT-PCR in the pre-treatment biopsies of tumour tissue specimens taken from patients scheduled to receive neoadjuvant 5-FU, cisplatin and radiotherapy. The gene discussed is GSTP1; the disease is neoplasm.