LY2603618 is a selective inhibitor of the deoxyribonucleic acid (DNA) damage checkpoint kinase 1 (CHK1). It was being developed as a chemotherapeutic-enhancing agent in the treatment of cancer. Phase 1 studies have shown the feasibility of combining LY2603618 with either gemcitabine or pemetrexed. The objective of this study was to find the dose of LY2603618 that can be safely combined with standard doses of pemetrexed and cisplatin and to test if this triplet offered a significant improvement in progression-free survival (PFS) in participants with Stage IV nonsquamous non-small cell lung cancer (NSCLC) in the first-line of palliative treatment.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
76
Administered intravenously as a continuous 10-minute infusion
Administered intravenously as a continuous 1-hour infusion
Administered intravenously as a continuous 1-hour infusion
Phase 2: Progression-Free Survival Time
Progression-free survival (PFS) time is defined as the time from the date of randomization to the first date of documented objective progressive disease (PD) or death from any cause. For participants who were not known to have had objective PD as of the data inclusion cut-off date for a particular analysis, PFS was censored at the date of the last objective progression-free disease assessments. For participants who took any subsequent systemic anticancer therapy prior to progression, PFS was censored at the date of the last objective progression-free disease assessment prior to the start date of any subsequent systemic anticancer therapy. PFS time was summarized using Kaplan-Meier estimates.
Time frame: Randomization up to first date of PD or death from any cause (up to 6 months after the last participant entered treatment)
Phase 1: Recommended Phase 2 Dose of LY2603618
The recommended Phase 2 dose for LY2603618 when administered approximately 24 hours after pemetrexed and cisplatin was based on the maximum tolerated dose (MTD) and achievement of predefined LY2603618 plasma systemic exposures targets (area under the LY2603618 plasma concentration versus time curve from time zero to infinity \[AUC(0-∞)\] \>21,000 nanogram\*hour/milliliter \[ng\*h/mL\] and maximum LY2603618 plasma concentration \[Cmax\] \>2000 nanograms/milliliter \[ng/mL\]).
Time frame: Time of first dose to last dose
Phase 2: Overall Survival
Overall survival (OS) time is defined as the time from the date of randomization to the date of death from any cause. For participants not known to have died as of the data cut-off date, OS time was censored at the last contact date the participant was known to be alive prior to the data cut-off date. OS was summarized using Kaplan-Meier estimates.
Time frame: Randomization to the date of death from any cause through the time of study discontinuation (approximately 12 months after last participant was randomized)
Phase 2: Overall Tumor Response Rate: Percentage of Participants Who Achieved a Confirmed Best Response of Completed Response (CR) or Partial Response (PR)
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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.
Mannheim, Baden-Wurttemberg, Germany
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Münster, Nordhein-Westfalen, Germany
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Coswig, Saxony, Germany
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Berlin, Germany
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Frankfurt, Germany
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Hanover, Germany
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Heidelberg, Germany
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Homburg, Germany
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Immenhausen, Germany
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Lübeck, Germany
...and 14 more locations
Overall response rate is the best response of CR or PR as classified by the investigators according to the Response Evaluation Criteria in Solid Tumors (RECIST, v1.1) guidelines. CR is defined as the disappearance of all target and non-target lesions, normalization of tumor marker level of non-target lesions, and any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 millimeter (mm). PR is an at least 30% decrease in the sum of the diameters of target lesions (taking as reference the baseline sum diameter) without progression of non-target lesions or appearance of new lesions. Overall response rate is calculated as a total number of participants with CR or PR divided by the total number of participants with at least 1 measurable lesion, multiplied by 100.
Time frame: Randomization until date of disease progression (up to 6 months after the last participant was randomized)
Phase 2: Change in Tumor Size
Change in tumor size was based on tumor measurements collected according to RECIST, v1.1 guidelines. Tumor size is the sum of the tumor measurements (longest diameters) of target lesions at each tumor evaluation. Change in tumor size was defined as the change in log tumor size from baseline evaluation to the evaluation at the end of Cycle 2.
Time frame: Baseline, end of Cycle 2
Phase 1: Pharmacokinetic: Maximum Plasma Concentration (Cmax) (LY2603618)
Cmax is reported for each LY2603618 dose level on Cycle 1 /Day 2 and Cycle 2 /Day 2. The number of pharmacokinetic observations (n) used in the analysis is presented for each dose level and time point.
Time frame: Cycle 1/Day 2 - immediately prior to end of LY2603618 infusion, and 1, 3, 6, 24, 48, 72, and 144 hours postdose; Cycle 2/Day 2 - predose, immediately prior to end of LY2603618 infusion, and 1, 3, 6, 24, 48, 72, and 144 hours postdose
Phase 1: Pharmacokinetic: Cmax (Pemetrexed and Cisplatin)
Cmax for pemetrexed and total platinum (t-platinum) from cisplatin is reported. The number of pharmacokinetic observations (n) used in the analysis is presented for each drug.
Time frame: Pemetrexed: Cycle 1/Day 1 - immediately prior to end of pemetrexed infusion and 1, 2, 6 and 24 hours postdose. Cisplatin: Cycle 1/Day 1 - immediately prior to end of cisplatin infusion and 0.5, 1, 2, 6, 24, 72, 96, and 168 hours postdose.
Phase 1: Pharmacokinetic: Area Under the Plasma Concentration Versus Time Curve (AUC) (LY2603618)
AUC from time zero to 24 hours (AUC\[0-24\]), AUC from time zero to the last time point with a measurable concentration (AUC\[0-tlast\]), and AUC from time zero to infinity (AUC\[0-∞\]) values are reported for each LY2603618 dose level on Cycle 1 /Day 2 and Cycle 2 /Day 2. The number of pharmacokinetic observations (n) used in the analysis is presented for each dose level and time point.
Time frame: Cycle 1/Day 2 - immediately prior to end of LY2603618 infusion and 1, 3, 6, 24, 48, 72, and 144 hours postdose; Cycle 2/Day 2 - predose, immediately prior to end of LY2603618 infusion, and 1, 3, 6, 24, 48, 72, and 144 hours postdose
Phase 1: Pharmacokinetic: AUC (Pemetrexed and Cisplatin)
AUC(0-tlast) and AUC(0-∞) values are reported for pemetrexed and t-platinum from cisplatin. The number of pharmacokinetic observations (n) used in the analysis is presented for each drug.
Time frame: Pemetrexed: Cycle 1/Day 1 - immediately prior to end of pemetrexed infusion and 1, 2, 6 and 24 hours postdose. Cisplatin: Cycle 1/Day 1 - immediately prior to end of cisplatin infusion and 0.5, 1, 2, 6, 24, 72, 96, and 168 hours postdose.
Phase 2: Pharmacokinetic: Cmax (LY2603618)
Time frame: Cycle 1/Day 2 - predose, immediately prior to the end of the LY2603618 infusion, and 2-6, 24-48, and 72-96 hours postdose
Phase 2: Pharmacokinetic: AUC (LY2603618)
AUC (0-24), AUC(0-tlast), and AUC(0-∞) values are reported for LY2603618. The number of pharmacokinetic observations (n) used in the analysis is presented.
Time frame: Cycle 1/Day 2 - predose, immediately prior to the end of the LY2603618 infusion, and 2-6, 24-48, and 72-96 hours postdose
Phase 2: Change From Baseline to Long-term Follow up in Lung Cancer Symptom Scale (LCSS)
Health-related quality of life and participant symptoms were assessed using the LCSS (patient scale). However, improper implementation of questionnaires at the site level reduced the sponsor's ability to accurately evaluate the impacted data. Therefore, the LCSS data should be interpreted with caution. The LCSS is a 9-item questionnaire. Six questions are symptom-specific measures for lung cancer (appetite, fatigue, cough, dyspnea, hemoptysis, and pain), and 3 summation items describe total symptomatic distress, activity status, and overall quality of life. Participant responses were measured using visual analogue scales (VAS) with 100-milliliter (mm) lines. Scores range from 0 (for best outcome) to 100 (for worst outcome). The Average Symptom Burden Index (ASBI) was calculated as the mean of 6 symptom-specific questions from the LCSS. The total LCSS score was calculated as the mean of 9 questions from the LCSS.
Time frame: Randomization to the end of study (approximately 12 months after the last participant entered treatment)
Phase 1: Document Any Antitumor Activity Per Radiological Scans and/or Tumor Markers
Overall response rate is presented. Overall response rate is defined as the percentage of participants with a best response of CR or PR as classified by the investigators according to RECIST, v1.1 criteria. CR is defined as the disappearance of all target and non-target lesions, normalization of tumor marker level of non-target lesions, and any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 mm. PR is an at least 30% decrease in the sum of the diameters of target lesions (taking as reference the baseline sum diameter) without progression of non-target lesions or appearance of new lesions. Overall response rate is calculated as a total number of participants with CR or PR divided by the total number of participants with at least 1 measurable lesion, multiplied by 100.
Time frame: Baseline through end of Phase 1
Phase 2: Proportion of Participants Receiving Maintenance Therapy
Time frame: Cycle 5
Phase 2: Clinical Benefit Rate: Percentage of Participant Who Achieved a Response of Stable Disease (SD), Partial Response (PR), or Complete Response (CR)
Clinical benefit rate is the best response CR, PR, or SD as classified by the investigators according to the RECIST, v1.1 guidelines. CR is defined as the disappearance of all target and non-target lesions, normalization of tumor marker level of non-target lesions, and any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 mm. PR is an at least 30% decrease in the sum of the diameters of target lesions (taking as reference the baseline sum diameter) without progression of non-target lesions or appearance of new lesions. SD is neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for 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 at least 1 measurable lesion, multiplied by 100.
Time frame: Randomization until date of disease progression or death (up to 6 months after the last participant was randomized)