A cell line (MFD-1) was derived from a 55-year old male with oesophageal adenocarcinoma. Using different sources of genetic material from normal and tumour tissue surgically resected, peripheral blood and the derived cell line a high concordance of genotypes calls across the whole genome confirms MFD-1 was derived from parent tumour. The SNP6 array contained 906,000 probes for the genotyping of SNPs and 946,000 probes for the genotyping of non-polymorphic copy number. Affymetrix CEL files were analysed using the tool PICNIC2 (predicting absolute allele copy number variation with microarray cancer data).