CAV1 and neoplasm: Of the samples that could be analysed for the combined expression of Cav-1 and pERK-1/2 we found (Table 1) 42% (66/158) of patient tumours were positive for Cav-1 (Figure 1A and 1B) and 35% (55/158) positive for pERK-1/2 (Figure 1E and 1F).