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Ref Type Journal Article
PMID (20644979)
Authors Garrett CR, Coppola D, Wenham RM, Cubitt CL, Neuger AM, Frost TJ, Lush RM, Sullivan DM, Cheng JQ, Sebti SM
Title Phase I pharmacokinetic and pharmacodynamic study of triciribine phosphate monohydrate, a small-molecule inhibitor of AKT phosphorylation, in adult subjects with solid tumors containing activated AKT.
Journal Investigational new drugs
Vol 29
Issue 6
Date 2011 Dec
Abstract Text Triciribine phosphate is a potent, small-molecule inhibitor of activation of all three isoforms of AKT in vitro. AKT is an intracellular protein that, when activated, leads to cellular division; it is dysregulated in a large number of malignancies, and constitutively activating AKT mutations are present in a minority of cancers.In this phase I study triciribine phosphate monohydrate (TCN-PM) was administered to subjects whose tumors displayed evidence of increased AKT phosphorylation (p-AKT) as measured by immunohistochemical analysis (IHC). TCN-PM was administered over 30 min on days 1, 8 and 15 of a 28-day cycle. Tumor biopsy specimens, collected before treatment and on day +15, were assessed for p-AKT by IHC and western blot analyses.Nineteen subjects were enrolled; 13 received at least one cycle of therapy, and a total of 34 complete cycles were delivered. One subject was treated at the 45 mg/m(2) dose before the study was closed due to its primary objective having been met. No dose-limiting toxic effects were observed. Modest decreases in tumor p-AKT following therapy with TCN-PM were observed at the 35 mg/m(2) and 45 mg/m(2) dose levels, although definitive conclusions were limited by the small sample size.These preliminary data suggest that treatment with TCN-PM inhibits tumor p-AKT at doses that were tolerable. Although single agent activity was not observed in this enriched population, further combination studies of TCN-PM with other signal transduction pathway inhibitors in solid tumors is warranted.


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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
AKT1 act mut Advanced Solid Tumor no benefit Triciribine Phase I Actionable In a Phase I trial, Triciribine (API-2) demonstrated safety, but lacked efficacy as a monotherapy in advanced solid tumor patients with activated Akt (PMID: 20644979). 20644979