JNJ28871063 (hydrochloride)

JNJ28871063 hydrochloride is an orally active, highly selective and ATP competitive pan-ErbB kinase inhibitor with IC₅₀ values of 22 nM, 38 nM, and 21 nM for ErbB1, ErbB2, and ErbB4, respectively. JNJ28871063 hydrochloride inhibits phosphorylation of functionally important tyrosine residues in both EGFR and ErbB2. JNJ28871063 hydrochloride crosses the blood-brain barrier and has antitumor activity in human tumor xenograft models that overexpress EGFR and ErbB2^[1]. In Vitro: JNJ-28871063 demonstrates potent growth inhibition in vitro of human cancer cell lines (N87; BT474; SKBR3; A431; HN5) overexpressing the ErbB2 receptor with IC₅₀ values with 60-168 nM. 28871063 exhibited the least effect at inhibiting growth of non–ErbB-over-expressing cell lines (HeLa, A375, HCT116, HT29, MRC5 primary fibroblasts cells; IC₅₀>10 μM)^[1].
JNJ-28871063 hydrochloride (3 μM; 16 hours) reduces the basal level of ErbB2 phosphorylation in SKBR3 cells^[1].
JNJ28871063 hydrochloride is from an aminopyrimidine oxime structural class^[1].
In Vivo: JNJ28871063 hydrochloride (100 mg/kg/day; Oral; for 30 days) shows significant inhibition of tumor growth (TGI=71%)^[1].
JNJ28871063 hydrochloride produces a significant inhibition of tumor growth at 100 mg/kg (TGI=66.8%) in an A431 human tumor xenograft model^[1].