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Open-label Study of CS-1008 for Subjects With Untreated and Unresectable Pancreatic Cancer

Phase 2 Multicenter, Open-Label Study of CS-1008, A Humanized Monoclonal Antibody Targeting Death Receptor 5 (DR5), In Combination With Gemcitabine in Chemotherapy Naive Subjects With Unresectable or Metastatic Pancreatic Cancer

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00521404
Enrollment
65
Registered
2007-08-27
Start date
2007-08-15
Completion date
2010-08-20
Last updated
2021-04-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Pancreatic Cancer

Keywords

Pancreatic cancer, chemotherapy naive, unresectable or metastatic pancreatic cancer, CS1008, Gemcitabine, Gemzar

Brief summary

Phase 2 study to determine the efficacy and safety of CS-1008 when given with gemcitabine to subjects with previously untreated and unresectable (unable to be surgically removed) or metastatic (spread to other areas beyond the pancreas) pancreatic cancer.

Detailed description

Primary Objective: \- To evaluate the efficacy of CS-1008 administered in combination with gemcitabine to chemotherapy naive subjects with unresectable or metastatic pancreatic cancer, based on the progression-free survival at 16 weeks. Secondary Objectives: * To evaluate the efficacy of CS-1008 administered in combination with gemcitabine on overall progression-free survival rate, objective response rate, duration of response, and overall survival. * To determine the pharmacokinetics of BIP CS-1008 and DSC CS-1008. * To study potential biomarkers of CS-1008 activity * To assess possible human anti-human antibody formation after exposure to CS-1008 * To evaluate the safety profile of CS-1008 when administered in combination with gemcitabine to chemotherapy naive subjects with unresectable or metastatic pancreatic cancer.

Interventions

CS-1008: 8mg/kg loading dose followed by 3mg/kg weekly.

DRUGgemcitabine

Gemcitabine - 1000mg/meter sq

Sponsors

Daiichi Sankyo
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Histologically or cytologically confirmed resectable or metastatic pancreatic cancer; not previously treated with chemotherapy; measurable disease; 18 years of age or older

Exclusion criteria

* Anticipation of need for major surgery or radiation therapy during the study * Heart Disease exclusions: myocardial infarction or unstable angina within the past 6 months; severe or unstable angina pectoris within the past 6 months; coronary or peripheral artery bypass graft within the past 6 mo., etc. * Clinically significant active infection or history of HIV * Partial or complete bowel obstruction * Poorly controlled psychiatric illness

Design outcomes

Primary

MeasureTime frameDescription
Progression-Free Survival Rate at 16 Weeks Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerBaseline to the date of disease progression or death due to any cause (whichever occurs first), up to 16 weeks post dose.Progression-free survival rate (PFS) was defined as the time from the date of the first administration of the study drug (Day 1) to the date of the first objective documentation of disease progression or death resulting from any cause, whichever came first at 16 weeks post-treatment with CS-1008.

Secondary

MeasureTime frameDescription
Kaplan-Meier (Non-Parametric) Analysis of Progression-Free Survival Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerBaseline up to date of disease progression or death due to any cause (whichever occurs first), up to approximately 36 months post dose.PFS (Progression-free survival) was defined as the time from the date of the first administration of study drug (Day 1) to the date of the first objective documentation of disease progression or death resulting from any cause, whichever came first.
Overall Survival Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerBaseline to death due to any cause, up to approximately 36 months post dose.OS (Overall Survival) was defined as the time from the date of the first administration of study drug (Day 1) to the date of death. If there was no death reported for a subject before the cut-off date for overall survival analysis, overall survival was censored at the last contact date at which the subject was known to be alive.
Best Overall Tumor Response Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerBaseline to up to date of first documented objective response or disease progression (whichever occurs first), up to approximately 36 months post dose.The best overall response the best response (in the order of confirmed complete response \[CR\], confirmed partial response \[PR\], unconfirmed CR, unconfirmed PR, stable disease \[SD\], and progressive disease\[PD\]) among all overall responses recorded from the start of treatment until the subject withdrew from the study. If there was no tumor assessment after the first infusion of study drug and no clinical disease progression recorded, the best overall response was classified as Unknown. CR was defined as the disappearance of all target lesions, PR was defined as at least a 30% decrease in the sum of diameters of target lesions, PD was defined as at least a 20% increase in the sum of diameters of target lesions, and SD was defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for progressive disease PD according to RECIST guideline (version 1.1).
Number of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermBaseline up to 30 days post last dose, up to approximately 36 months post dose.A treatment-emergent adverse event (TEAE) was defined as an adverse event (AE) that: emerges during treatment, having been absent at pre-treatment; or reemerges during treatment, having been present at baseline but stopped prior to treatment or worsens in severity during treatment relative to the pre-treatment state when the AE was continuous. The AEs with an onset date on Day 1 (the date on which the first dose of study medication was administered) were counted as a TEAE. An AE that occurred more than 30 days after the last dose of study medication was not included as a TEAE unless it was considered drug-related. A TEAE was considered related to CS-1008 or gemcitabine if the investigator considered the event as possibly, probably, or definitely related to treatment, or if the investigator's assessment of the relationship was unknown.
Number of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermBaseline up to 30 days post last dose, up to approximately 36 months post dose.A treatment-emergent adverse event (TEAE) was defined as an adverse event (AE) that: emerges during treatment, having been absent at pre-treatment; or reemerges during treatment, having been present at baseline but stopped prior to treatment or worsens in severity during treatment relative to the pre-treatment state when the AE was continuous. The AEs with an onset date on Day 1 (the date on which the first dose of study medication was administered) were counted as a TEAE. An AE that occurred more than 30 days after the last dose of study medication was not included as a TEAE unless it was considered drug-related. A TEAE was considered related to CS-1008 or gemcitabine if the investigator considered the event as possibly, probably, or definitely related to treatment, or if the investigator's assessment of the relationship was unknown.

Countries

United States

Participant flow

Recruitment details

A total of 65 participants who met all inclusion criteria and no exclusion criteria were enrolled in the study at 12 clinic sites in the United States of America. Three (3) of the participants were not treated with the study drug. The data on the 62 treated participants are presented in this report.

Pre-assignment details

Three participants were enrolled but later failed entry criteria. They did not receive treatment and were not included in this analysis.

Participants by arm

ArmCount
CS-1008 + Gemcitabine
Chemotherapy-naïve participants with unresectable or metastatic pancreatic cancer who were administered CS-1008 once weekly without rest, and Gemcitabine once weekly for 3 weeks followed by 1 week of rest. CS-1008 was administered first. Gemcitabine was then administered immediately after completion of the CS-1008 infusion.
62
Total62

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyAdverse Event13
Overall StudyDisease Progression33
Overall StudyInvestigator decision5
Overall StudyNoncompliance or lack of cooperation1
Overall StudyOther7
Overall StudyWithdrawal of consent3

Baseline characteristics

CharacteristicCS-1008 + Gemcitabine
Age, Continuous60.7 years
STANDARD_DEVIATION 10.85
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
62 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
2 Participants
Race (NIH/OMB)
More than one race
1 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
59 Participants
Region of Enrollment
United States
62 Participants
Sex: Female, Male
Female
26 Participants
Sex: Female, Male
Male
36 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
61 / 62
other
Total, other adverse events
62 / 62
serious
Total, serious adverse events
35 / 62

Outcome results

Primary

Progression-Free Survival Rate at 16 Weeks Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic Cancer

Progression-free survival rate (PFS) was defined as the time from the date of the first administration of the study drug (Day 1) to the date of the first objective documentation of disease progression or death resulting from any cause, whichever came first at 16 weeks post-treatment with CS-1008.

Time frame: Baseline to the date of disease progression or death due to any cause (whichever occurs first), up to 16 weeks post dose.

Population: The progression-free survival rate was assessed in the Per-Protocol Analysis Set.

ArmMeasureValue (NUMBER)
CS-1008 + GemcitabineProgression-Free Survival Rate at 16 Weeks Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic Cancer52.5 Percentage of participants
Secondary

Best Overall Tumor Response Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic Cancer

The best overall response the best response (in the order of confirmed complete response \[CR\], confirmed partial response \[PR\], unconfirmed CR, unconfirmed PR, stable disease \[SD\], and progressive disease\[PD\]) among all overall responses recorded from the start of treatment until the subject withdrew from the study. If there was no tumor assessment after the first infusion of study drug and no clinical disease progression recorded, the best overall response was classified as Unknown. CR was defined as the disappearance of all target lesions, PR was defined as at least a 30% decrease in the sum of diameters of target lesions, PD was defined as at least a 20% increase in the sum of diameters of target lesions, and SD was defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for progressive disease PD according to RECIST guideline (version 1.1).

Time frame: Baseline to up to date of first documented objective response or disease progression (whichever occurs first), up to approximately 36 months post dose.

Population: The best overall tumor response was assessed in the Per-Protocol Analysis Set.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CS-1008 + GemcitabineBest Overall Tumor Response Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerConfirmed CR0 Participants
CS-1008 + GemcitabineBest Overall Tumor Response Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerConfirmed PR5 Participants
CS-1008 + GemcitabineBest Overall Tumor Response Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerObjective Response (confirmed CR or PR)5 Participants
CS-1008 + GemcitabineBest Overall Tumor Response Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerUnconfirmed CR0 Participants
CS-1008 + GemcitabineBest Overall Tumor Response Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerUnconfirmed PR3 Participants
CS-1008 + GemcitabineBest Overall Tumor Response Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerStable Disease (SD)28 Participants
CS-1008 + GemcitabineBest Overall Tumor Response Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerProgressive Disease (PD)14 Participants
CS-1008 + GemcitabineBest Overall Tumor Response Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerUnknown11 Participants
Secondary

Kaplan-Meier (Non-Parametric) Analysis of Progression-Free Survival Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic Cancer

PFS (Progression-free survival) was defined as the time from the date of the first administration of study drug (Day 1) to the date of the first objective documentation of disease progression or death resulting from any cause, whichever came first.

Time frame: Baseline up to date of disease progression or death due to any cause (whichever occurs first), up to approximately 36 months post dose.

Population: Progression-free survival was assessed in the Per-Protocol Analysis Set.

ArmMeasureGroupValue (NUMBER)
CS-1008 + GemcitabineKaplan-Meier (Non-Parametric) Analysis of Progression-Free Survival Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerPFS Rate at 3 Months (%)59.0 Percentage of participants
CS-1008 + GemcitabineKaplan-Meier (Non-Parametric) Analysis of Progression-Free Survival Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerPFS Rate at 6 Months (%)34.4 Percentage of participants
CS-1008 + GemcitabineKaplan-Meier (Non-Parametric) Analysis of Progression-Free Survival Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerPFS Rate at 9 Months (%)21.3 Percentage of participants
CS-1008 + GemcitabineKaplan-Meier (Non-Parametric) Analysis of Progression-Free Survival Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerPFS Rate at 1 Year (%)13.1 Percentage of participants
Secondary

Number of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred Term

A treatment-emergent adverse event (TEAE) was defined as an adverse event (AE) that: emerges during treatment, having been absent at pre-treatment; or reemerges during treatment, having been present at baseline but stopped prior to treatment or worsens in severity during treatment relative to the pre-treatment state when the AE was continuous. The AEs with an onset date on Day 1 (the date on which the first dose of study medication was administered) were counted as a TEAE. An AE that occurred more than 30 days after the last dose of study medication was not included as a TEAE unless it was considered drug-related. A TEAE was considered related to CS-1008 or gemcitabine if the investigator considered the event as possibly, probably, or definitely related to treatment, or if the investigator's assessment of the relationship was unknown.

Time frame: Baseline up to 30 days post last dose, up to approximately 36 months post dose.

Population: Treatment-Emergent Adverse Events were assessed in the safety analysis set.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermAny TEAE43 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermAnemia8 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermNeutropenia4 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermThrombocytopenia5 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermAbdominal Pain5 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermConstipation8 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermDiarrhea8 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermNausea22 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermVomiting8 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermAsthenia11 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermFatigue20 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermOedma peripheral12 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermPyrexia10 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermHaemoglobin decreased6 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermNeutrophil count decreased5 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermWhite blood cell count decreased4 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermAnorexia8 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermDysgeusia4 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermHeadache6 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermRash4 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to CS-1008 Experienced by ≥5% of Participants by System Organ Class and Preferred TermHypertension4 Participants
Secondary

Number of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred Term

A treatment-emergent adverse event (TEAE) was defined as an adverse event (AE) that: emerges during treatment, having been absent at pre-treatment; or reemerges during treatment, having been present at baseline but stopped prior to treatment or worsens in severity during treatment relative to the pre-treatment state when the AE was continuous. The AEs with an onset date on Day 1 (the date on which the first dose of study medication was administered) were counted as a TEAE. An AE that occurred more than 30 days after the last dose of study medication was not included as a TEAE unless it was considered drug-related. A TEAE was considered related to CS-1008 or gemcitabine if the investigator considered the event as possibly, probably, or definitely related to treatment, or if the investigator's assessment of the relationship was unknown.

Time frame: Baseline up to 30 days post last dose, up to approximately 36 months post dose.

Population: Treatment-emergent adverse event was assessed in the safety analysis set.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermAny TEAE54 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermAnemia15 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermLeukopenia4 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermLymphopena5 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermThrombocytopenia11 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermAbdominal distension4 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermAbdominal pain5 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermConstipation7 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermDiarrhea11 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermNausea31 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermVomiting20 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermAsthenia12 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermChills5 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermFatigue22 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermOedema peripheral10 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermPyrexia11 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermHaemoglobin decreased10 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermNeutrophil count decreased9 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermPlatelet count decreased9 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermWhite blood cell count decreased7 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermAnorexia8 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermDehydration5 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermDysgeusia4 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermHeadache6 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermAlopecia4 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermNight Sweats4 Participants
CS-1008 + GemcitabineNumber of Participants With Treatment-Emergent Adverse Events Considered by the Investigator at Least Possibly Related to Gemcitabine Experienced by ≥5% of Participants by System Organ Class and Preferred TermRash5 Participants
Secondary

Overall Survival Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic Cancer

OS (Overall Survival) was defined as the time from the date of the first administration of study drug (Day 1) to the date of death. If there was no death reported for a subject before the cut-off date for overall survival analysis, overall survival was censored at the last contact date at which the subject was known to be alive.

Time frame: Baseline to death due to any cause, up to approximately 36 months post dose.

Population: Overall survival was assessed in the Per-Protocol Analysis Set.

ArmMeasureGroupValue (NUMBER)
CS-1008 + GemcitabineOverall Survival Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerOS Rate at 6 Months (%)55.7 Percentage of participants
CS-1008 + GemcitabineOverall Survival Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerOS Rate at 9 Months (%)41.0 Percentage of participants
CS-1008 + GemcitabineOverall Survival Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerOS Rate at 1 Year (%)24.6 Percentage of participants
CS-1008 + GemcitabineOverall Survival Following Treatment With CS-1008 in Combination With Gemcitabine in Chemotherapy-Naïve Participants With Unresectable or Metastatic Pancreatic CancerOS Rate at 15 Months (%)13.1 Percentage of participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026