ERBB2 and breast cancer: Beqa et al. designed a novel hybrid nanomaterial using gold nano popcorn (GNPOP)-attached single wall carbon nanotube (SWCNT) for targeted diagnosis and clearly showed that S6 aptamer attached GNPOP-modified SWCNT based SERS assay is highly selective for binding with SKBR3 as a human breast cancer cell line, which overexpresses HER2.