Neoplasms

Skin and Connective Tissue Diseases

All Conditions

Rare Diseases

Melanoma

Neuroendocrine Tumors

Neuroectodermal Tumors

Neuroectodermal Tumors, Primitive

Neoplasms, Germ Cell and Embryonal

Neoplasms by Histologic Type

Neoplasms, Nerve Tissue

Nevus, Pigmented

Nevus

Nevi and Melanomas

Skin Neoplasms

Skin Diseases

Neuroendocrine Tumor

Neuroepithelioma

All Drugs and Chemicals

Antineoplastic Agents

Immunomodulating Agents

Trametinib

Protein Kinase Inhibitors

Enzyme Inhibitors

Subjects who have had previous treatment with a BRAF inhibitor.

Subjects who have had previous chemotherapy or immunotherapy without a BRAF inhibitor.

GSK1120212

GSK Clinical Trials

MEK113583 is a Phase II open-label, multi-site study to investigate the objective response rate, safety, and pharmacokinetics of GSK1120212 in subjects with BRAF mutation-positive melanoma who were previously treated with or without a BRAF inhibitor. GSK1120212 is a potent and highly selective inhibitor of MEK activation and kinase activity.

Study to Determine the Effectiveness of GSK1120212 in BRAF Mutation-positive Melanoma Previously Treated With or Without a BRAF Inhibitor

An Open-Label, Multi-Center Study to Investigate the Objective Response Rate, Safety, and Pharmacokinetics of GSK1120212, a MEK Inhibitor, in BRAF Mutation-positive Melanoma Subjects Previously Treated With or Without a BRAF Inhibitor

Best confirmed response was assessed by the Investigator per Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1. Best response was measured either as a complete response (CR), defined as the disappearance of all target lesions and pathological lymph nodes \<10 millimeters (mm), or a partial response (PR), defined as at least a 30% decrease in the sum of the diameters of target lesions. To be assigned a status of confirmed CR or PR, a confirmatory disease assessment was required no less than 28 days after the criteria for response were first met.

The number of participants with best confirmed response was analyzed for the following subgroups of participants previously treated with standard therapy but not BRAF inhibitors: (1) participants with prior (before the start of this study) brain metastases (mets); (2) participants without prior brain mets; (3) participants with BRAF mutation V600E; (4) participants with BRAF mutation V600E and no prior brain mets; and (5) participants with BRAF mutation V600K. Objective response was assessed per RECIST version 1.1. Objective response was measured either as CR, defined as the disappearance of all target lesions and pathological lymph nodes \<10 mm, or PR, defined as at least a 30% decrease in the sum of the diameters of target lesions. To be assigned a status of confirmed CR or PR, a confirmatory disease assessment was required no less than 28 days after the criteria for response were first met. Brain metastasis is a cancer that has spread to the brain from another location of the body.

An interim analysis was performed using data collected approximately 12 and 13 weeks after the 30th participant was enrolled in the prior BRAF inhibitor and prior standard therapy groups, respectively. The best unconfirmed response by the investigator per RECIST version 1.1 was assessed. The study design permitted stopping the study for futility if \<3 best confirmed responses were observed in the first 30 participants of each treatment arm after completing the first post-dose assessment at Week 8. Best response was measured as either a CR, defined as the disappearance of all target lesions and pathological lymph nodes \<10 millimeters, or a PR, defined as at least a 30% decrease in the sum of the diameters of target lesions.

Human plasma samples were analyzed for trametinib using a validated analytical method.

An AE is defined as any untoward medical occurrence in a subject or clinical investigation subject, temporally associated with the use of a medicinal product, whether or not considered to be related to the medicinal product. AE and serious AE (SAE) data were collected from the start of the investigational product and continued until the End of Treatment Visit. Refer to the general Adverse AE/SAE module for a complete list of AEs and SAEs.

Duration of tumor response is defined as the time from the first documented evidence of a CR or PR to disease progression (at least a 20 percent increase in the sum of diameters of target lesions, taking as reference the smallest sum on study; unequivocal progression of non-target lesions, or the appearance of a new lesion) or death due to any cause. No participants who were previously treated with BRAF inhibitors had a CR, defined as the disappearance of all target lesions and pathological lymph nodes \<10 millimeters, or a PR, defined as at least a 30% decrease in the sum of the diameters of target lesions; thus, no duration of response data can be presented.

PFS is defined as the interval between the treatment start date and the earliest date of disease progression (at least a 20 percent increase in the sum of diameters of target lesions, taking as reference the smallest sum on study; unequivocal progression of non-target lesions, or the appearance of a new lesion) or death due to any cause, whichever occurred first. Participants who had not progressed or died were censored at the date of the last adequate tumor assessment at the time of the cut-off.

PFS was analyzed for the following subgroups of participants previously treated with standard therapy but not BRAF inhibitors: (1) participants with prior (before the start of this study) brain metastases (mets); (2) participants without prior brain mets; (3) participants with BRAF mutation V600E; (4) participants with BRAF mutation V600E and no prior brain mets; and (5) participants with BRAF mutation V600K. Per RECIST version 1.1, PFS is defined as the interval between the treatment start date and the earliest date of disease progression (at least a 20 percent increase in the sum of diameters of target lesions, taking as reference the smallest sum on study; unequivocal progression of non-target lesions, or the appearance of a new lesion) or death due to any cause, whichever occurred earliest. Brain metastasis is a cancer that has spread to the brain from another location of the body.

Overall survival is defined as the time from the treatment start date until death due to any cause. Participants who had not died were censored at the date of the last adequate tumor assessment at the time of the cut-off.

Overall survival (defined as the time from the treatment start date until death due to any cause) data data are presented as the number of participants who were alive 6 months, 12 months and 24 months after Baseline. Participants who had not died were censored at the date of the last adequate tumor assessment at the time of the cut-off.

Tumor progression was assessed as disease progression (DP), defined as at least a 20 percent increase in the sum of diameters of target lesions (representative of all involved organs), taking as reference the smallest sum on study; unequivocal progression of non-target lesions; or the appearance of a new lesion. Because melanoma often progresses to the brain/central nervous system (CNS) and this study enrolled approximately 20% participants with prior brain metastases, tumor progression in the brain/CNS was summarized. Paticipants could have been included in more than one category.

GlaxoSmithKline

Participants who were previously treated (before the start of this study) with BRAF (v-Raf murine sarcoma viral oncogene homolog B1) inhibitors received trametinib 2 milligram (mg) tablets orally once daily (qd) until treatment discontinuation criteria were met. Per the pre-specified study design, enrollment could have been stopped if objective response was observed in fewer than 3 participants among the first 30 participants enrolled. Per this criterion, enrollment in this cohort was stopped because, after enrollment of the first 30 participants, no objective responses were observed. Eligible participants who had been consented at the time the 30th participant was dosed were allowed to enroll, leading to overenrollment of 10 participants (total of 40 participants in this cohort). An interim analysis was performed after 30 participants had completed the first target post-dose disease assessment at 8 weeks.

Trametinib 2 mg: Prior BRAF Inhibitors

Participants who were previously treated with standard therapy, but not with BRAF inhibitors, received trametinib 2 mg tablets orally qd until treatment discontinuation criteria were met. Per the pre-specified study design, enrollment could have been stopped if objective response was observed in fewer than 3 participants among the first 30 participants enrolled. Per this criterion, 55 participants were enrolled in this cohort because objective responses occurred in 6 participants at the time of the interim analysis. Eligible participants who had been consented at the time the 55th participant was dosed were allowed to enroll. This led to the overenrollment of 2 participants (total of 57 participants in this cohort). An interim analysis was performed after 30 participants had completed the first target post-dose disease assessment at 8 weeks.

Trametinib 2 mg: Prior Standard Therapy

Total

Age, Continuous

Sex: Female, Male

White-Arabic/North African Heritage

White-White/Caucasian/European Heritage

Race/Ethnicity, Customized

GSK Response Center

Participants who were previously treated (before the start of this study) with BRAF inhibitors received trametinib 2 milligram (mg) tablets orally once daily (qd) until treatment discontinuation criteria were met. Per the pre-specified study design, enrollment could have been stopped if objective response was observed in fewer than 3 participants among the first 30 participants enrolled. Per this criterion, enrollment in this cohort was stopped because, after enrollment of the first 30 participants, no objective responses were observed. Eligible participants who had been consented at the time the 30th participant was dosed were allowed to enroll, leading to overenrollment of 10 participants (total of 40 participants in this cohort). An interim analysis was performed after 30 participants had completed the first target post-dose disease assessment at 8 weeks.

All Treated Population: all participants who received at least one dose of investigational product

Number of Participants With Best Confirmed Response

Participants in this arm were those with prior (before the start of this study) brain metastasis, who were previously treated with standard therapy but not BRAF inhibitors. Participants received trametinib 2 mg tablets orally qd until treatment discontinuation criteria were met.

Participants With Prior Brain Mets

Participants in this arm were those without prior brain metastasis, who were previoulsy treated with standard thearpy but not BRAF inhibitors. Participants received trametinib 2 mg tablets orally qd until treatment discontinuation criteria were met.

Participants Without Prior Brain Mets

Participants in this arm were those with a positive BRAF mutation at V600E, who were previously treated with standard therapy but not with BRAF inhibitors. Participants received trametinib 2 mg tablets orally qd until treatment discontinuation criteria were met.

Participants With BRAF Mutation V600E

Participants in this arm were those with a positive BRAF mutation at V600E but no prior brain metastasis, who were previously treated with standard therapy but not with BRAF inhibitors. Participants received trametinib 2 mg tablets orally qd until treatment discontinuation criteria were met.

Participants With BRAF Mutation V600E and no Prior Brain Mets

Participants in this arm were those with a positive BRAF mutation at V600K, who were previously treated with standard therapy but not with BRAF inhibitors. Participants received trametinib 2 mg tablets orally qd until treatment discontinuation criteria were met.

Participants With BRAF Mutation V600K

All Treated Population. A single participant could have been included in more than one subgroup. Subgroup analysis was not conducted in participants previously treated with BRAF inhibitors because there were no CRs or PRs among these participants.

Number of Participants With Best Confirmed Response in the Indicated Subgroups of Participants Previously Treated With Standard Therapy But Not BRAF Inhibitors

Number of Participants With Best Unconfirmed Response at the Time of the Interim Analysis (Week 8)

Day 15, pre-dose, n= 27, 44

Day 15, 0.5 to 2 hrs post-dose, n=23, 49

Day 15, 2 to 4 hrs post-dose, n=23, 48

Day 15, 4 to 8 hrs post-dose, n=22, 49

Week 4, pre-dose, n=23, 42

Week 8, pre-dose, n=19, 31

Week 12, pre-dose, n=7, 30

Pharmacokinetic (PK) Population: all participants in the All Treated Population for whom PK samples were obtained and analyzed. Only those participants available at the indicated time points were analyzed.

Mean Plasma Concentrations

Number of Participants With Any Adverse Event (AE)

All Treated Population. Only those participants who had a confirmed CR or PR were analyzed for duration of response.

Duration of Tumor Response

Progression-free Survival (PFS)

Participants in this arm were those with prior (before the start of this study) brain metastasis who were previously treated with standard therapy but not with BRAF inhibitors received trametinib 2 mg tablets orally qd until treatment discontinuation criteria were met.

Participants in this arm were those without prior brain metastasis who were previously treated with standard therapy but not with BRAF inhibitors. Participants received trametinib 2 mg tablets orally qd until treatment discontinuation criteria were met.

Participants in this arm were those with positive BRAF mutation at V600E, who were previously treated with standard therapy but not with BRAF inhibitors. Participants received trametinib 2 mg tablets orally qd until treatment discontinuation criteria were met.

Participants in this arm were those with positive BRAF mutation at V600E but no prior brain metastasis, who were previously treated with standard therapy but not with BRAF inhibitors. Participants received trametinib 2 mg tablets orally qd until treatment discontinuation criteria were met.

Paticipants With BRAF Mutation V600E and no Prior Brain Mets

Participants in this arm were those with positive BRAF mutation at V600K, who were previously treated with standard therapy but not with BRAF inhibitors. Participants received trametinib 2 mg tablets orally qd until treatment discontinuation criteria were met.

All Treated Population. A single participant could have been included in more than one subgroup. Subgroup analysis was not conducted in participants previously treated with BRAF inhibitors because this subgroup was stopped for futility and nearly all the participants progressed before 4 months.

PFS in the Indicated Subgroups of Participants Previously Treated With Standard Therapy But Not BRAF Inhibitors

Overall Survival

Died at or prior to 6 months

Died after 6 months

Censored, less than 6 months follow-up

Censored, more than 6 months follow-up

Died at or prior to 12 months

Died after 12 months

Censored, less than 12 months follow-up

Censored, more than 12 months follow-up

Died at or prior to 24 months

Died after 24 months

Censored, less than 24 months follow-up

Censored, more than 24 months follow-up

Number of Participants Who Survived Until 6 Months, 12 Months and 24 Months From Baseline

Number of participants (par.) with DP

Number of par. with DP in target lesions

Number of par. with DP in non-target lesions

Number of par. with a new lesion

Number of par. with clinical progression

Number of Participants With Tumor Progression

Participants who were previously treated (before the start of this study) with BRAF inhibitors received trametinib (GSK1120212) 2 milligram (mg) tablets orally once daily (qd) until treatment discontinuation criteria were met. Per the pre-specified study design, enrollment could have been stopped if objective response was observed in fewer than 3 participants among the first 30 participants enrolled. Per this criterion, enrollment in this cohort was stopped because, after enrollment of the first 30 participants, no objective responses were observed. Eligible participants who had been consented at the time the 30th participant was dosed were allowed to enroll, leading to overenrollment of 10 participants (total of 40 participants in this cohort). An interim analysis was performed after 30 participants had completed the first target post-dose disease assessment at 8 weeks.

Spots Global Cancer Trial Database for Study to Determine the Effectiveness of GSK1120212 in BRAF Mutation-positive Melanoma Previously Treated With or Without a BRAF Inhibitor

Trial Identification

Conditions

Interventions

Study Description

Keywords

Eligibility

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Contact Details

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