It is currently unclear from the literature whether SLC26A3 is also of relevance to other types of cancer (see, however, the section Novel Candidates: Other HCO−3 Transport Proteins with Altered Expression in Cancer); but consistent with more general implications, SLC26A3 was recently shown to be a marker of resistance to neoadjuvant chemotherapy in ErbB2 receptor negative breast cancer (de Ronde et al., 2013). The gene discussed is SLC26A3; the disease is cancer.