That said, empirical testing of mRNA levels of RASSF1A and RASSF1C by qRT-PCR in breast cancer tumor tissues (Figure 9b) revealed that expression changes of RASSF1C can occur as a result of the loss of RASSF1A. It can be seen that RASSF1A expression decreases and RASSF1C increases in cancers compared to normal. The gene discussed is RASSF1; the disease is cancer.