Damås and colleagues [15] examined the circulating levels of CXCL8, CXCL1, and CXCL5 in patients with various degrees of HF, finding that they had a significant increase in the levels of all three chemokines and that both CXCL8 and CXCL1 correlated with the NYHA class. The gene discussed is CXCL8; the disease is hydrops fetalis.