18 and older, any sex, with Melanoma or Carcinoma, Hepatocellular. Patients with the condition only — healthy volunteers not accepted.
Results — posted to ClinicalTrials.gov
Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.
Phase 1b Part: Number of Participants With Dose-limiting Toxicities (DLTs)Primary· Cycle 1 (Cycle length=21 days)
DLT was graded using National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE) version 5.0 based on investigator assessment. DLT was defined as any of the hematological or non-hematological toxicities events that: - Failure to administer greater than or equal to (\>=) 75 percentage (%) of the planned dosage of E7386 as a result of treatment-related toxicity; - Any treatment-related toxicity that causes the participant to discontinue treatment, even if the toxicity does not meet DLT criteria; - Prolonged delay (greater than \[\>\] 2 weeks) in initiating Cycle 2 due to
Phase 1b Part: Number of Participants With Treatment Emergent Adverse Events (TEAEs)Primary· Up to 30 days after last dose of study drug (up to 12.73 months)
A TEAE was defined as an adverse event (AE) that emerged during treatment, having been absent at pretreatment (Baseline) or reemerged during treatment, or up to 30 days following last dose of study drug, having been present at pretreatment (Baseline) but stopped before treatment, or worsened in severity during treatment or up to 30 days following last dose of study drug, relative to the pretreatment state, when the AE was continuous.
Phase 1b Part: Number of Participants With Serious TEAEsPrimary· Up to 90 days after last dose of study drug (up to 14.73 months)
An SAE was any untoward medical occurrence that at any dose: Resulted in death; Was life-threatening (i.e., the participant was at immediate risk of death from the AE as it occurred; this did not include an event that, had it occurred in a more severe form or was allowed to continue, might have caused death); Required inpatient hospitalization or prolongation of existing hospitalization; Resulted in persistent or significant disability/incapacity; Was a congenital anomaly/birth defect (in the child of a participant who was exposed to the study drug). An SAE was also counted as a TEAE if it eme
Phase 2 Part: Objective Response Rate (ORR)Primary· Up to 20.40 months
ORR was defined as the percentage of participants achieving a best overall response of complete response (CR) or partial response (PR) as per Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1. CR: Disappearance of all non-nodal target lesions and any pathological lymph nodes must have become normal (i.e., decrease in short axis to less than \[\<\] 10 millimeters \[mm\]). PR: At least a 30 percent (%) decrease in sum of the diameters (SOD) of target lesions, taking as reference the screening SOD. Additionally, progression of target lesions must not be present.
Phase 1b Part: Percentage of Participants With Best Overall Response (BOR)Secondary· Up to 11.73 months
BOR was defined as CR, PR, stable disease (SD), progressive disease (PD), and not applicable (NA)/not evaluable (NE) as per RECIST version 1.1. CR: Disappearance of all non-nodal target lesions and any pathological lymph nodes must have become normal (i.e., decrease in short axis to \<10 mm). PR: At least a 30% decrease in SOD of target lesions, taking as reference screening SOD. Additionally, progression of target lesions must not be present. SD: Neither sufficient shrinkage of target lesions to qualify for PR, nor sufficient increase to qualify for PD. PD: At least a 20% increase in the SOD
Phase 1b and Phase 2 Parts: Duration of Response (DOR)Secondary· Phase 1b Part: Up to 11.73 months; Phase 2 Part: Up to 20.40 months
DOR was defined as the time from the first documentation of CR or PR to the first documentation of PD or death due to any cause (whichever occurs first), in participants with confirmed CR or PR per RECIST 1.1. CR: Disappearance of all non-nodal target lesions and any pathological lymph nodes must have become normal (i.e., decrease in short axis to \<10 mm). PR: At least a 30% decrease in SOD of target lesions, taking as reference screening SOD. Additionally, progression of target lesions must not be present. SD: Neither sufficient shrinkage of target lesions to qualify for PR, nor sufficient i
Phase 1b and Phase 2 Parts: Disease Control Rate (DCR)Secondary· Phase 1b Part: Up to 11.73 months; Phase 2 Part: Up to 20.40 months
DCR was defined as the percentage of participants who had a best overall response of confirmed CR or PR, or SD (after \>=5 weeks from the first dose) as per RECIST 1.1. CR: Disappearance of all non-nodal target lesions and any pathological lymph nodes must have become normal (i.e., decrease in short axis to \<10 mm). PR: At least a 30% decrease in SOD of target lesions, taking as reference screening SOD. Additionally, progression of target lesions must not be present. SD: Neither sufficient shrinkage of target lesions to qualify for PR, nor sufficient increase to qualify for PD. PD: At least a
Phase 1b and Phase 2 Parts: Clinical Benefit Rate (CBR)Secondary· Phase 1b Part: Up to 11.73 months; Phase 2 Part: Up to 20.40 months
CBR was defined as the percentage of participants who had a best overall response of confirmed CR or PR, or durable SD (duration of SD \>=23 weeks) per RECIST 1.1. CR: Disappearance of all non-nodal target lesions and any pathological lymph nodes must have become normal (i.e., decrease in short axis to \<10 mm). PR: At least a 30% decrease in SOD of target lesions, taking as reference screening SOD. Additionally, progression of target lesions must not be present. SD: Neither sufficient shrinkage of target lesions to qualify for PR, nor sufficient increase to qualify for PD.
Phase 2 Part: Number of Participants With TEAEs and Treatment-related TEAEsSecondary· Up to 30 days after last dose of study drug (up to 21.40 months)
A TEAE was defined as an AE that emerged during treatment, having been absent at pretreatment (Baseline) or reemerged during treatment, or up to 30 days following last dose of study drug, having been present at pretreatment (Baseline) but stopped before treatment, or worsened in severity during treatment or up to 30 days following last dose of study drug, relative to the pretreatment state, when the AE was continuous. Related TEAEs was defined as AE for which a causal relationship between the study drug and the AE was a reasonable possibility.
Phase 1b Part, Cmax: Maximum Observed Plasma Concentration for E7386 When Co-administered With PembrolizumabSecondary· Cycle 1 Days 1 and 8: Pre-dose up to 12 hours post-dose (Cycle 1 length=21 days)
Cmax was defined as the maximum plasma concentration for E7386 when co-administered with Pembrolizumab. PK parameters were derived by noncompartmental analysis.
Phase 1b Part, Tmax: Time to Reach the Maximum Plasma Concentration for E7386 When Co-administered With PembrolizumabSecondary· Cycle 1 Days 1 and 8: Pre-dose up to 12 hours post-dose (Cycle 1 length=21 days)
Tmax was defined as the time to reach maximum observed plasma concentration for E7386 when co-administered with Pembrolizumab. PK parameters were derived by noncompartmental analysis.
Phase 1b Part, AUC(0-t): Area Under the Plasma Concentration-time Curve From Zero (Pre-dose) to Time of Last Quantifiable Concentration for E7386 When Co-administered With PembrolizumabSecondary· Cycle 1 Days 1 and 8: Pre-dose up to 12 hours post-dose (Cycle 1 length=21 days)
AUC(0-t) was defined as the area under the plasma concentration-time curve from 0 (pre-dose) to time of last quantifiable concentration for E7386 when co-administered with Pembrolizumab. PK parameters were derived by noncompartmental analysis.
Time frame: Non-serious: Up to 30 days after last dose of the study drug (up to 12.73 months for Phase 1b and up to 21.40 months for Phase 2); All-cause Mortality and SAEs: Up to 90 days after last dose of the study drug (up to 14.73 months for Phase 1b and 23.40 months for Phase 2).
Reporting threshold: 5%.
Adverse-event reports describe events observed during the trial — not all are caused by the drug.
The Phase 1b part of this study is conducted to assess the safety and tolerability of E7386 in combination with pembrolizumab in participants with previously treated selected solid tumors, and to determine the recommended Phase 2 dose (RP2D) of E7386 in combination with pembrolizumab.
The Phase 2 part of this study is conducted to assess the objective response rate (ORR) of E7386 in combination with pembrolizumab (melanoma, colorectal cancer \[CRC\], hepatocellular carcinoma \[HCC\]) or of E7386 in combination with pembrolizumab plus lenvatinib (HCC) according to Response Evaluation Criteria in Solid Tumors (RECIST) 1.1.
Publications & conference data
8 peer-reviewed publications reference this trial (live from Europe PMC):
NCT04840927 — A Study to Evaluate the Relative Bioavailability of E7386 Following Oral Administration of Targeted Release (TR) Tablets
· Phase 1
· withdrawn
NCT04008797 — A Study of E7386 in Combination With Other Anticancer Drug(s) in Participants With Solid Tumor
· Phase 1, PHASE2
· active not recruiting
NCT03996226 — A Food-Effect Study of E7386 in Healthy Participants
· Phase 1
· completed
NCT03833700 — A Study of E7386 in Participants With Advanced Solid Tumor Including Colorectal Cancer (CRC)
· Phase 1
· active not recruiting
NCT03264664 — Study of E7386 in Participants With Selected Advanced Neoplasms
· Phase 1
· active not recruiting
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Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
Sponsor: as reported to ClinicalTrials.gov by Eisai Inc.
Last refreshed: 24 October 2025
Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT05091346.