AZD8330 (RRY-424704;ARRY-704) is an orally active, selective MEK inhibitor with an IC50 of 7 nM. AZD8330 (RRY-424704;ARRY-704) has potential antineoplastic activity. AZD8330 (RRY-424704;ARRY-704) specifically inhibits mitogen- activated protein kinase kinase 1 (MEK or MAP/ERK kinase1), resulting in inhibition of growth factor-mediated cell signaling and tumor cell proliferation. MEK is a key component of the RAS/RAF/MEK/ERK signaling pathway that regulates cell growth. Constitutive activation of this pathway has been implicated in many cancers. [1][2]
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