Neoplasms

Skin and Connective Tissue Diseases

All Conditions

Breast Neoplasms

Breast Diseases

Skin Diseases

Antineoplastic Agents

All Drugs and Chemicals

Exemestane

Estrogens

Aromatase Inhibitors

Enzyme Inhibitors

Estrogen Antagonists

Estrogen Receptor Antagonists

Hormones

Hormone Antagonists

Participants receive ridaforolimus 10 mg orally (PO) every 5 days (QD x 5) plus dalotuzumab 10 mg/kg intravenously (IV) every week (QW) plus exemestane 25 mg PO every day (QD) in 28-day cycles until documented disease progression or unacceptable toxicity.

Participants receive ridaforolimus 30 mg PO QD x 5 plus exemestane 25 mg PO QD treatment in 28-day cycles until documented disease progression or unacceptable toxicity.

Ridaforolimus 10 mg tablet, administered PO at a dose of 10 mg (triplet) or 30 mg (doublet) depending upon randomization, on Days 1-5, 8-12, 15-19, \& 22-26 of 28-day cycle.

Ridaforolimus

Dalotuzumab administered 10 mg/kg IV weekly on Days 1, 8, 15, and 22 of 28-day cycle.

Dalotuzumab

Exemestane 25 mg tablet administered PO QD.

Medical Director

The purpose of the study is to evaluate the efficacy of the triplet of ridaforolimus, dalotuzumab and exemestane compared to the combination of ridaforolimus and exemestane in post-menopausal participants with breast cancer. The primary hypothesis of the study is that the triplet of ridaforolimus, dalotuzumab and exemestane will improve progression free survival (PFS) compared to ridaforolimus and exemestane.

A Phase II Trial of Ridaforolimus and Exemestane, Compared to Ridaforolimus, Dalotuzumab and Exemestane in Participants With Breast Cancer (MK-8669-064)

A Phase II Randomized Trial of the Combination of Ridaforolimus and Exemestane, Compared to Ridaforolimus, Dalotuzumab and Exemestane in High Proliferation, Estrogen Receptor Positive Breast Cancer Patients

http://engagezone.msd.com/doc/ProcedureAccessClinicalTrialData.pdf

PFS was defined as the time from randomization to progressive disease, or death, whichever occurs first. Response was assessed according to RECIST 1.1 by BICR. According to RECIST 1.1, progressive disease (PD) was defined as a 20% relative increase in the sum of diameters (SOD) of target lesions, taking as reference the nadir SOD and an absolute increase of \>5 mm in the SOD, or the appearance of new lesions. PFS was analyzed using the Kaplan-Meier method and median PFS (95% confidence interval \[CI\]) in weeks was reported for each treatment arm. Per protocol, participants remained on assigned treatment until disease progression. Participants who discontinued study treatment for reasons other than disease progression continued to be assessed by imaging until objective documentation of progression. All participants (including participants who discontinued study treatment) were followed for survival until investigator notification to discontinue.

The percent change from baseline to Week 16 in the sum of target lesion diameters as determined by anatomic imaging was defined as the line length (i.e., diameter) for each target lesion identified at baseline summed across all lesions at baseline, and separately at each post-baseline time point. The primary analysis was conducted using a constrained longitudinal data analysis (cLDA) method and target lesion measurements according to the BICR. Percent change from baseline in sum of target lesion diameters at Week 16 was reported for each treatment arm.

ORR was defined as the percentage of participants whose best response was complete response (CR; disappearance of all non-nodal target lesions and any pathological lymph nodes must have become normal) or partial response (PR; at least a 30% decrease in the SOD of target lesions, taking as reference the baseline SOD) according to RECIST 1.1 and based on BICR. ORR was reported for each treatment arm. Per protocol, participants remained on assigned treatment until disease progression. Participants who discontinued study treatment for reasons other than disease progression continued to be assessed by imaging until objective documentation of progression.

OS was defined as the time from randomization to death due to any cause. Participants without documented death at the time of analysis were censored at the date last known to be alive. OS was analyzed using the Kaplan-Meier method and median OS (95% confidence interval \[CI\]) in weeks was reported for each treatment arm. Per protocol, all participants (including participants who discontinued study treatment) were followed for survival until investigator notification to discontinue.

Merck Sharp & Dohme LLC

All randomized participants who received at least one dose of study treatment. For nine participants who continued to receive treatment under compassionate use after database lock, safety data was not included in any study database but was reported to global safety.

Participants received ridaforolimus 10 mg orally (PO) every 5 days (QD x 5) plus dalotuzumab 10 mg/kg intravenously (IV) every week (QW) plus exemestane 25 mg PO every day (QD) in 28-day cycles until documented disease progression or unacceptable toxicity.

Ridaforolimus + Dalotuzumab + Exemestane

Participants received ridaforolimus 30 mg PO QD x 5 plus exemestane 25 mg PO QD treatment in 28-day cycles until documented disease progression or unacceptable toxicity.

Ridaforolimus + Exemestane

Total

Age, Continuous

Sex: Female, Male

Ethnicity (NIH/OMB)

Race (NIH/OMB)

Senior Vice President, Global Clinical Development

Hazard ratio (HR) and p-value for treatment difference based on Cox regression model with Efron tie handling for treatment comparison (Ridaforolimus + Dalotuzumab + Exemestane arm versus Ridaforolimus + Exemestane arm).

1. Progression-free Survival (PFS) According to Response Criteria in Solid Tumors Version 1.1 (RECIST 1.1) Based on Blinded Independent Central Review (BICR)

All randomized participants with available Week 16 target lesion measurements.

Percent Change From Baseline in Sum of Target Lesion Diameters at Week 16

Miettinen and Nurminen's method was used to compare ORR between the two treatment arms (Ridaforolimus + Dalotuzumab + Exemestane arm versus Ridaforolimus + Exemestane arm), and to calculate a p-value and 95% confidence interval (CI) for the difference in response rates.

3. Percentage of Participants With Objective Response (Objective Response Rate [ORR]) According to Response Criteria in Solid Tumors Version 1.1 (RECIST 1.1) Based on Blinded Independent Central Review (BICR).

HR and p-value for treatment difference based on Cox regression model with Efron tie handling for treatment comparison (Ridaforolimus + Dalotuzumab + Exemestane arm versus Ridaforolimus + Exemestane arm).

Spots Global Cancer Trial Database for A Phase II Trial of Ridaforolimus and Exemestane, Compared to Ridaforolimus, Dalotuzumab and Exemestane in Participants With Breast Cancer (MK-8669-064)

Trial Identification

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Study Description

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