A Study of LY2523355 in Participants With Breast Cancer

A Randomized Phase 2 Study of LY2523355 Versus Ixabepilone in Patients With Metastatic or Locally Recurrent Breast Cancer Who Have Received Prior Taxane Therapy

The purpose of the study is to evaluate the anti-tumor activity of LY2523355 relative to ixabepilone for the treatment of metastatic or locally recurrent breast cancer using change in tumor size as a continuous measure of response.

Study Overview

• Status: Completed
• Conditions: Metastatic Breast Cancer
• Intervention / Treatment: Drug: LY2523355; Drug: pegfilgrastim; Drug: filgrastim; Drug: ixabepilone

• Study Type: Interventional
• Enrollment (Actual): 39
• Phase: Phase 2

Contacts and Locations

Study Locations

• United States
  • Florida
    • Fort Myers, Florida, United States, 33916
      • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
    • Pensacola, Florida, United States, 32503
      • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
  • Georgia
    • Gainesville, Georgia, United States, 30501
      • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
  • Maryland
    • Bethesda, Maryland, United States, 20817
      • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
  • Ohio
    • Cincinnati, Ohio, United States, 45219
      • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
    • Toledo, Ohio, United States, 43623
      • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
  • South Carolina
    • Columbia, South Carolina, United States, 29210
      • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
    • Spartanburg, South Carolina, United States, 29303
      • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
  • Tennessee
    • Chattanooga, Tennessee, United States, 37404
      • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
    • Nashville, Tennessee, United States, 37203
      • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
  • Texas
    • Fort Worth, Texas, United States, 76104
      • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
  • Virginia
    • Richmond, Virginia, United States, 23230
      • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Have histologic or cytologic diagnosis of metastatic or locally recurrent breast cancer that is not amenable to therapy given with curative intent.
• Have measurable disease defined by Response Evaluation Criteria In Solid Tumors (RECIST) 1.1 guidelines.
• Have received 2 or more prior standard cytotoxic chemotherapy regimens for metastatic breast cancer and be, in the opinion of the investigator, an appropriate candidate for experimental therapy. Regimens received in the neoadjuvant or adjuvant setting are not counted as prior regimens.
• Have received a prior taxane in the neoadjuvant, adjuvant, or metastatic setting.
• Have recovered from the acute effects of prior chemotherapy, hormonal therapy, and radiation prior to study enrollment.
• Have a performance status of 0 or 1 on the Eastern Cooperative Oncology Group (ECOG) scale.
• Have adequate organ function.

Exclusion Criteria:

• Have Common Terminology Criteria for Adverse Events (CTCAE) Grade 2 or greater (moderate or worse) peripheral neuropathy
• Have a second primary malignancy.
• Have symptomatic, untreated, or uncontrolled central nervous system metastases.
• Have received autologous stem cell transplant following high-dose chemotherapy.
• Have serious preexisting medical conditions that in the opinion of the investigator would preclude participation in this study.
• Have active symptomatic fungal, bacterial, and/or known viral infection including active human immunodeficiency virus (HIV) or viral hepatitis.
• Have previously received LY2523355 in another study investigating this agent or therapy with ixabepilone or an ixabepilone-containing regimen.
• Have a history of radiation therapy involving more than 25 percent of the bone marrow.
• Have a Fridericia corrected QT (QTcF) interval of >470 milliseconds (msec) on screening electrocardiogram (ECG).
• Have QRS widening of >120 msec on screening ECG.
• Cannot change or stop taking a strong Cytochrome P450 3A4 (CYP3A4) inhibitor or CYP3A4 inducer per the ixabepilone label.
• Have hypersensitivity to drugs formulated with Cremophor® EL per the ixabepilone label.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: LY2523355 + pegfilgrastim or filgrastim; LY2523355: Five milligrams per meter squared per day (mg/m^2/day) (dosage determined by calculating participant's body surface area) administered intravenously as a 1-hour infusion on Days 1, 2, and 3 of a 21-day Cycle for 2 Cycles. Pegfilgrastim or Filgrastim: Dosage is determined by standard of care and is administered intravenously on Day 4 of 21-day Cycle for 2 Cycles. If at the end of 2 Cycles the participant was receiving benefit, the participant may have remained on study drug for additional cycles until a criterion for study discontinuation was met.	Drug: LY2523355; Administered intravenously as a one hour infusion; Drug: pegfilgrastim; Administered intravenously; Drug: filgrastim; Administered intravenously
Active Comparator: ixabepilone; Forty milligrams per meter squared per day (mg/m^2/day) (dosage determined by calculating participant's body surface area) administered intravenously as a 3-hour infusion on Day 1 of a 21-day Cycle for 2 Cycles. If at the end of 2 Cycles the participant was receiving benefit, the participant may have remained on study drug for additional cycles until a criterion for study discontinuation was met.	Drug: ixabepilone; Administered intravenously

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change in Tumor Size (CTS) From Baseline to the End of Cycle 2	The log ratio of tumor size at Cycle 2 to tumor size at baseline is calculated for each participant, where the tumor size is the sum of the target lesion measurements at each assessment.	Baseline up to end of Cycle 2 (Day 42)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Percentage of Participants Achieving an Overall Response (Overall Response Rate)	Overall response rate is the best response of complete response (CR) or partial response (PR) as classified by the investigators according to the Response Evaluation Criteria In Solid Tumors (RECIST v1.1) guidelines. CR is a disappearance of all non-nodal target lesions, with the short axes of any target lymph nodes reduced to <10 millimeters (mm). PR is an at least 30% decrease in the sum of the diameters of target lesions (including the short axes of any target lymph nodes), taking as reference the baseline sum diameter. Overall response rate is calculated as a total number of participants with CR or PR divided by the total number of participants with measurable disease, multiplied by 100.	Baseline to measured progressive disease or date of death from any cause (up to 423 days)
Progression-free Survival (PFS)	Progression-free survival (PFS) is the time from the date of randomization to the first date of progressive disease (PD) or death due to any cause, whichever occurs first. PD is as classified by the investigators according to the Response Evaluation Criteria In Solid Tumors (RECIST v1.1) guidelines, and is defined as an increase of at least 20% in the sum of the diameters of target lesions, taking as reference the smallest sum on study (included baseline sum if that was the smallest on study). In addition, the sum must have demonstrated an absolute increase of at least 5 millimeter (mm) (the appearance of 1 or more new lesions was considered progression). Kaplan-Meier analysis was performed on the observed distribution of PFS. Participants were censored from analysis for the following reasons: lack of disease assessment, lost to follow-up, and further anticancer therapy started. Median PFS is presented.	Baseline to measured progressive disease or date of death from any cause (up to 423 days)
Percentage of Participants Achieving a Clinical Benefit (Clinical Benefit Rate)	Clinical benefit rate is the proportion of participants who achieve a best response of complete response (CR), partial response (PR), or stable disease (SD) as classified by the investigators according to the Response Evaluation Criteria In Solid Tumors (RECIST v1.1) guidelines. CR is a disappearance of all non-nodal target lesions, with the short axes of any target lymph nodes reduced to <10 millimeters (mm). PR is an at least 30% decrease in the sum of the diameters of target lesions (including the short axes of any target lymph nodes), taking as reference the baseline sum diameter. SD is neither sufficient shrinkage to qualify as PR nor sufficient increase to qualify as progressive disease, taking as reference the smallest sum diameter since treatment started. Clinical benefit rate is calculated as a total number of participants with CR, PR, or SD divided by the total number of participants with measurable disease, multiplied by 100.	Baseline to measured progressive disease or date of death from any cause (up to 423 days)
Pharmacokinetics, Maximum Plasma Concentration (Cmax) of LY2523355	Cmax is the maximum plasma concentration of LY2523355 after a 1-hour intravenous infusion of LY2523355 on Day 1 and Day 3 of Cycle 1.	Cycle 1: Day 1 and Day 3
Pharmacokinetics, Maximum Plasma Concentration (Cmax) of LSN2546307	Cmax is the maximum plasma concentration of LSN2546307 (metabolite) after a 1-hour intravenous infusion of LY2523355 on Day 1 and Day 3 of Cycle 1.	Cycle 1: Day 1 and Day 3
Pharmacokinetics, Intracycle Accumulation Ration (Ra) of LY2523355	The intracycle accumulation ratio (Ra) is defined as the LY2523355 Cmax on Day 3 of Cycle 1 to the LY2523355 Cmax on Day 1 of Cycle 1 after a 1-hour intravenous infusion of LY2523355 on Day 1 and Day 3 of Cycle 1.	Cycle 1: Day 1 and Day 3

Other Outcome Measures

Outcome Measure	Measure Description	Time Frame
Percentage of Deaths on Study Through the Follow-up Period	The percentage of participants who died through the follow-up period of the study; the cause of death was not captured. A summary of serious and other non-serious adverse events, regardless of causality, is located in the Reported Adverse Events module.	Baseline through end of treatment follow-up (up to 423 days)

Collaborators and Investigators

• Sponsor: Eli Lilly and Company
• Investigators: Study Director: Call 1-877-CTLILLY (1-877-285-4559) or 1-317-615-4559 Mon - Fri 9 AM - 5 PM Eastern time (UTC/GMT - 5 hour, EST), Eli Lilly and Company

Study record dates

Study Major Dates

• Study Start: August 1, 2011
• Primary Completion (Actual): August 1, 2012
• Study Completion (Actual): September 1, 2013

Study Registration Dates

• First Submitted: August 11, 2011
• First Submitted That Met QC Criteria: August 11, 2011
• First Posted (Estimate): August 15, 2011

Study Record Updates

• Last Update Posted (Actual): September 18, 2019
• Last Update Submitted That Met QC Criteria: September 9, 2019
• Last Verified: September 1, 2019

More Information

Terms related to this study

• Keywords: Cancer; Locally; Breast; Recurrent
• Additional Relevant MeSH Terms: Skin Diseases; Neoplasms; Neoplasms by Site; Breast Diseases; Breast Neoplasms; Physiological Effects of Drugs; Immunologic Factors; Adjuvants, Immunologic; Lenograstim
• Other Study ID Numbers: 12847; I1Y-MC-JFBE (Other Identifier: Eli Lilly and Company)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES
• IPD Plan Description: Anonymized individual patient level data will be provided in a secure access environment upon approval of a research proposal and a signed data sharing agreement.
• IPD Sharing Time Frame: Data are available 6 months after the primary publication and approval of the indication studied in the US and EU, whichever is later. Data will be indefinitely available for requesting.
• IPD Sharing Access Criteria: A research proposal must be approved by an independent review panel and researchers must sign a data sharing agreement.
• IPD Sharing Supporting Information Type: STUDY_PROTOCOL; SAP; CSR