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Ref Type Journal Article
PMID (24423921)
Authors Hoh CK, Burris HA, Bendell JC, Tarazi J, Rosbrook B, Kim S, Infante JR, Reid TR
Title Intermittent dosing of axitinib combined with chemotherapy is supported by (18)FLT-PET in gastrointestinal tumours.
URL
Abstract Text We evaluated week-on/week-off axitinib dosing plus chemotherapy in patients with gastrointestinal tumours, including tumour thymidine uptake by fluorine-18 3'-deoxy-3'-fluorothymidine positron emission tomography ((18)FLT-PET).During a lead-in period, patients received twice daily (b.i.d.) axitinib 7 mg (n=3) or 10 mg (n=18) for 7 days followed by a 7-day dosing interruption; serial (18)FLT-PET scans were performed before day 1 and on days 7, 10, and 14. Axitinib plus FOLFIRI or FOLFOX was then administered in 2-week cycles; axitinib was interrupted on day 10 of each cycle for 7 days.The maximum tolerated dose of axitinib was 10 mg b.i.d., in a week-on/week-off schedule, combined with FOLFIRI or FOLFOX. Common all-causality grade 3 adverse events were neutropenia (38%), hypertension (33%), and fatigue (29%). Of 21 patients, 2 (10%) had a partial response and 12 (57%) had stable disease. Following 7 days of continuous axitinib dosing, tumour (18)FLT uptake decreased -49% from baseline and recovered to -28% and -17% from baseline, respectively, after 3 and 7 days of axitinib interruption.Axitinib administered in a week-on/week-off schedule combined with FOLFIRI or FOLFOX is supported by (18)FLT-PET data and was well tolerated in patients with gastrointestinal tumours.

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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