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Study of Pembrolizumab Following TACE in Primary Liver Carcinoma

A Phase Ib Study of Pembrolizumab Following Trans-Arterial Chemoembolization in Primary Liver Carcinoma

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03397654
Acronym
PETAL
Enrollment
26
Registered
2018-01-12
Start date
2018-01-28
Completion date
2023-03-23
Last updated
2025-03-06

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

Conditions

Primary Liver Carcinoma

Brief summary

Open label, single arm, multi-centre study of pembrolizumab following trans-arterial chemoembolization (TACE). Twenty-six to 32 evaluable participants with primary liver cancer (hepatocellular cancer; HCC) will be assessed. The primary objective is to determine the safety and tolerability of pembrolizumab following TACE. The secondary objective is to evaluate the efficacy of pembrolizumab following TACE by improving progression-free survival rates as measured by modified response evaluation criteria in solid tumours (mRECIST) criteria.

Interventions

DRUGPembrolizumab

Pembrolizumab solution

COMBINATION_PRODUCTTrans-arterial chemoembolization

Doxorubicin injected through the hepatic blood supply directly to the cancer-affected part of the liver, then gelatin sponge particles injected to block the blood vessels supplying the tumour

Sponsors

Merck Sharp & Dohme LLC
CollaboratorINDUSTRY
Imperial College London
Lead SponsorOTHER

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

1. Be willing and able to provide written informed consent/assent for the trial. 2. Be ≥ 18 years of age on day of signing informed consent. 3. Be willing to provide tissue from an excisional biopsy of a tumour lesion. 4. Have at least one uni-dimensional lesion measurable by Computed Tomography (CT)-scan or Magnetic Resonance Imaging (MRI) based on mRECIST criteria. 5. Be ineligible for surgical resection or liver transplantation. 6. Have a performance status of 0 or 1 on the Eastern Cooperative Oncology Group (ECOG) Performance Scale 7. Demonstrate adequate organ function 8. Have an overall Child-Pugh score \<7 9. Female subject of childbearing potential should have a negative urine or serum pregnancy. If the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required. 10. Women of childbearing potential must be willing to use a highly effective method of contraception as outlined in Section 6.9.2 for the course of the study through 120 days after the last dose of Investigational Medicinal Product (IMP). Note: Abstinence is acceptable if this is the usual lifestyle and preferred contraception for the subject. 11. Sexually active males must agree to use an adequate method of contraception as outlined in Section 6.9.2 starting with the first dose of IMP through 120 days after the last dose of study therapy. Note: Abstinence is acceptable if this is the usual lifestyle and preferred contraception for the subject.

Exclusion criteria

1. Has extrahepatic metastasis. 2. Prior TACE or systemic anticancer treatment for HCC. 3. Has any contraindication for TACE including portosystemic shunt, hepatofugal blood flow, known severe atheromatosis. 4. Has history of bleeding within the 4 weeks preceding study enrolment. 5. Has hepatic encephalopathy. 6. Has ascites that is refractory to diuretic therapy. 7. Has documented occlusion of the hepatic artery or the main portal vein (segmental portal vein thrombosis does not represent exclusion criterion provided this does not contraindicate TACE). 8. Is currently participating and receiving therapy or has participated or is participating in a study of an IMP or used an investigational device within 4 weeks of the first dose of IMP. 9. Has a diagnosis of immunodeficiency or is receiving systemic steroid therapy or any other form of immunosuppressive therapy. 10. Has a known history of active Bacillus Tuberculosis (TB) 11. Hypersensitivity to Pembrolizumab or any of its excipients. 12. Has a known additional malignancy that is progressing or requires active treatment. Exceptions include basal cell carcinoma of the skin or squamous cell carcinoma of the skin that has undergone potentially curative therapy or in situ cervical cancer. 13. Has active autoimmune disease that has required systemic treatment in the past 2 years (i.e. with use of disease modifying agents, corticosteroids or immunosuppressive drugs). Replacement therapy (eg. thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a form of systemic treatment. 14. Has known history of, or any evidence of active, non-infectious pneumonitis. 15. Has an active infection requiring systemic therapy. Exceptions relating to Hepatitis B and C virus infection are documented in Section 5.3.1, Table 5. 16. Has a history or current evidence of any condition, therapy, or laboratory abnormality that might confound the results of the trial, interfere with the subject's participation for the full duration of the trial, or is not in the best interest of the subject to participate, in the opinion of the treating Principal Investigator (PI). 17. Has known psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the trial. 18. Is pregnant or breastfeeding, or expecting to conceive or father children within the projected duration of the trial, starting with the screening visit through to 120 days after the last dose of IMP. 19. Has received prior therapy with an anti-PD-1, anti-PD-L1, or anti-PDL2 agent. 20. Has a known history of Human Immunodeficiency Virus (HIV; HIV 1/2 antibodies). 21. Has received a live vaccine within 30 days of first dose of IMP administration. Note: Seasonal influenza vaccines for injection are generally inactivated flu vaccines and are allowed; however intranasal influenza vaccines (e.g., Flu-Mist®) are live attenuated vaccines, and are not allowed.

Design outcomes

Primary

MeasureTime frameDescription
Incidence of Treatment-emergent Adverse Events (Safety and Tolerability)from the first pembrolizumab administration to up to 130 days after the last dose, 1.5 yearsThe safety and tolerability of pembrolizumab will be assessed by recording the incidence of adverse events (AEs) using National Cancer Institute Common Terminology Criteria for Adverse Events version 4 (NCI CTCAE v4).

Secondary

MeasureTime frameDescription
Progression-free Survival Rate (PFS; Efficacy) at 12 Weeks12 weeksPFS was defined by the time from last TACE to the first occurrence of documented disease progression based on RECIST v1.1 criteria or death from any cause, whichever occurred first, and it was calculated using Kaplan-Meier.

Countries

United Kingdom

Participant flow

Participants by arm

ArmCount
TACE Followed by Pembrolizumab
Trans-arterial chemoembolization (TACE) using doxorubicin solution (60 mg dose) and gelatin sponge particles; followed, at least 30 or 45 days later, by pembrolizumab solution (200 mg dose) every 3 weeks for a maximum of 1 year Pembrolizumab: Pembrolizumab solution Trans-arterial chemoembolization: Doxorubicin injected through the hepatic blood supply directly to the cancer-affected part of the liver, then gelatin sponge particles injected to block the blood vessels supplying the tumour
15
Total15

Baseline characteristics

CharacteristicTACE Followed by Pembrolizumab
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
10 Participants
Age, Categorical
Between 18 and 65 years
5 Participants
Age, Continuous72 Years
Eastern Cooperative Oncology Group performance
ECOG 0
9 Participants
Eastern Cooperative Oncology Group performance
ECOG 1
6 Participants
Race and Ethnicity Not Collected— Participants
Region of Enrollment
United Kingdom
15 participants
Sex: Female, Male
Female
4 Participants
Sex: Female, Male
Male
11 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
10 / 15
other
Total, other adverse events
14 / 15
serious
Total, serious adverse events
7 / 15

Outcome results

Primary

Incidence of Treatment-emergent Adverse Events (Safety and Tolerability)

The safety and tolerability of pembrolizumab will be assessed by recording the incidence of adverse events (AEs) using National Cancer Institute Common Terminology Criteria for Adverse Events version 4 (NCI CTCAE v4).

Time frame: from the first pembrolizumab administration to up to 130 days after the last dose, 1.5 years

Population: Patients with liver confirmed Hepatocellular carcinoma

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
TACE Followed by PembrolizumabIncidence of Treatment-emergent Adverse Events (Safety and Tolerability)15 Participants
Secondary

Progression-free Survival Rate (PFS; Efficacy) at 12 Weeks

PFS was defined by the time from last TACE to the first occurrence of documented disease progression based on RECIST v1.1 criteria or death from any cause, whichever occurred first, and it was calculated using Kaplan-Meier.

Time frame: 12 weeks

Population: Patients with liver confirmed Hepatocellular carcinoma

ArmMeasureValue (NUMBER)
TACE Followed by PembrolizumabProgression-free Survival Rate (PFS; Efficacy) at 12 Weeks93.3 Percentage

Source: ClinicalTrials.gov · Data processed: Feb 12, 2026