CAMP and metastatic malignant neoplasm in the lymph nodes: Furthermore, Weber et al. showed that mRNA expression of hCAP18/LL-37 is strongly correlated with that of ERBb2 and with the presence of lymph node metastasis in estrogen receptor-positive tumors from clinical samples, and LL-37 synergistically increases ErBb2 signaling (63) (Figure 2).