Melanoma Clinical Trial
Official title:
COMBI-AD: A Phase III Randomized Double Blind Study of Dabrafenib (GSK2118436) in COMBInation With Trametinib (GSK1120212) Versus Two Placebos in the ADjuvant Treatment of High-risk BRAF V600 Mutation-positive Melanoma After Surgical Resection
This was a two-arm, randomized, double-blind Phase III study of dabrafenib in combination with trametinib versus two placebos in the adjuvant treatment of melanoma after surgical resection. Patients with completely resected, histologically confirmed, BRAF V600E/K mutation-positive, high-risk [Stage IIIa (lymph node metastasis >1 mm), IIIb or IIIc] cutaneous melanoma were screened for eligibility. Subjects were randomized to receive either dabrafenib (150 milligram (mg) twice daily [BID]) and trametinib (2 mg once daily [QD]) combination therapy or two placebos for 12 months.
This was a two-arm, randomized, double-blind, multi-center, international phase III study of dabrafenib in combination with trametinib versus two matching placebos in the adjuvant treatment of melanoma after surgical resection. Patients with completely resected, histologically confirmed, BRAF V600E/K mutation-positive, high-risk [Stage IIIa (lymph node metastasis >1 mm), IIIb or IIIc] cutaneous melanoma were screened for eligibility. Subjects were randomized to receive either dabrafenib (150 milligram (mg) twice daily [BID]) and trametinib (2 mg once daily [QD]). None of the patients had undergone previous systemic anticancer treatment or radiotherapy for melanoma. All the patients had undergone completion lymphadenectomy with no clinical or radiographic evidence of residual regional node disease within 12 weeks before randomization, had recovered from definitive surgery, and had an Eastern Cooperative Oncology Group performance status of 0 or 1. BRAF V600 mutation status was confirmed in primary-tumor or lymph-node tissue by a central reference laboratory. All the patients provided written informed consent. The primary end point was recurrence-free survival, Overall survival, as the key secondary end point, was to be tested in a hierarchical manner only if the primary end point met the criteria for significance. The overall survival analysis used a preplanned three-look Lan-DeMets group sequential design with an O'Brien-Fleming-type boundary, which was used to determine the significance threshold for the first interim overall survival analysis (two-sided P=0.000019). Disease assessments included clinical examination and imaging by means of computed tomography, magnetic resonance imaging, or both.) Imaging was performed every 3 months during the first 24 months, then every 6 months until disease recurrence or the completion of the trial. Follow-up for survival began after recurrence and continued through the end of the trial. Adverse events and laboratory values were assessed at screening, on the date of randomization, at least once per month through month 12, and at every visit for disease-recurrence assessment after month 12. Adverse events and laboratory values were graded according to the Common Terminology Criteria for Adverse Events, version 4.0. ;
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