Basal-like breast tumours do not exhibit amplifications for epidermal growth factor receptor (EGFR) or Y-box binding protein 1 (YB-1). Primary breast tumours were evaluated for genetic amplifications using SMRT array CGH. DNA was isolated from ten primary basal-like breast tumours and genomic profiles were generated by submegabase resolution tiling array comparative genomic hybridisation. There was no obvious gain of copy number on chromosomes 1 or 7, representing the loci for YB-1 and EGFR, respectively. The exception to this trend was BLC9, where there was a large amplicon on chromosome 7. The lung adenocarcinoma cell line HCC827 was included as a positive control of EGFR amplification.