In particular, Astaxanthin (10 μM) interfered with androgen-induced proliferation of human prostatic adenocarcinoma (LNCaP) in a dose-dependent manner and reduced the prostate specific antigen (PSA) secretion of 25% and intracellular PSA level of 50% [86].Moreover, Astaxanthin can act as anticancer compound enhancing the immune system response. Here, KLK3 is linked to prostate adenocarcinoma.