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Adjuvant Therapy of Completely Resected Merkel Cell Carcinoma With Immune Checkpoint Blocking Antibodies vs Observation

Prospective Randomized Trial of an Adjuvant Therapy of Completely Resected Merkel Cell Carcinoma (MCC) With Immune Checkpoint Blocking Antibodies (Nivolumab, Opdivo®; Ipilimumab (Yervoy®) Every 3 Weeks for 12 Weeks Versus Observation

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02196961
Acronym
ADMEC-O
Enrollment
180
Registered
2014-07-22
Start date
2014-06-30
Completion date
2024-08-31
Last updated
2025-04-09

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

Conditions

Merkel Cell Carcinoma

Keywords

Merkel cell carcinoma, Adjuvant, Nivolumab

Brief summary

Primary objective: To estimate the efficacy of adjuvant nivolumab monotherapy in completely resected MCC patients Primary endpoint: Disease-free survival (DFS) rate evaluated at 12, 24 and 48 months after date of randomization Secondary Objectives: To describe the safety profile and additional efficacy parameters of the nivolumab treatment in MCC Secondary endpoints: * Adverse events according to CTCAE, Version 4.0 criteria, that are related to the administration of nivolumab * Disease-free survival (DFS) * Overall survival (OS) and OS rates at 12, 24 and 48 months after randomization Explorative Endpoints: * Distant-metastases-free survival (DMFS) and DMFS rate at 12, 24 and 48 months after randomization * Identification and validation of prognostic/predictive biomarkers * Quality of life (EORTC QLQ-C30) until 24 months after randomization

Detailed description

This is an international, open-label, randomized, multicenter phase II study to assess the efficacy of adjuvant nivolumab therapy in completely resected MCC patients. In the initial trial design, the immune modulating treatment was based on CTLA-4 blockade by ipilimumab; however, the advent of PD-1/PD-L1 blockade in the palliative treatment of MCC (presented at AACR, ASCO and ESMO) dramatically changed the treatment environment to an extent that applying treatments other than by PD-1/PD-L1 blockade had become very difficult. Moreover, the side effects of PD-1/PD-L1 blocking are far less frequent than side effects of ipilimumab. Consequently, randomization into the previous Ipilimumab treatment arm A was stopped. New patients will be randomized to nivolumab treatment instead. Patients randomized already into the Ipilimumab-arm will be evaluated descriptively for efficacy and safety. Patients already randomized into the observation arm (arm B) will be evaluated together with the newly randomized arm B-patients. A total of 177 patients with completely resected MCC will be enrolled over a recruitment period of 36 months into this trial, and randomized 2:1 as mentioned above. Patients will be stratified by sex, age, and stage of disease. Examinations and Follow-up Phase: The disease will be assessed at baseline, and thereafter every 12 weeks according to the current German guidelines for the management of MCC patients for 24 months after randomization, or until withdrawal of informed consent, lost to follow-up, or death, whichever occurs first. In addition, the patient's quality of life will be evaluated at baseline (pretreatment visit) and every 3 months until 24 months after randomization using a standard questionnaire (EORTC QLQC30). After 24 months, additional FU visits (or phone calls) will be conducted 6-monthly recording survival and tumor status including subsequent therapies until withdrawal of informed consent, lost to follow-up, death or end of study, whichever occurs first. End of study is defined as 48 months post LPFV (last patient first visit = date of randomization). Same methods of assessment (e.g. ultrasonography, CT or MRI scans) used at baseline will be used during follow-up.

Interventions

DRUGNivolumab

adjuvant treatment of completely resected Merkel cell carcinoma

Sponsors

Bristol-Myers Squibb
CollaboratorINDUSTRY
Prof. Dr. med. Dirk Schadendorf
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

1. The patient is willing and able to give written informed consent. 2. Central histological confirmation of diagnosis of Merkel cell carcinoma (MCC). 3. All MCC manifestations have been completely resected by surgery within 12 weeks before enrolment. 4. No currently present metastases (as confirmed by standard imaging studies (e.g. suggested by S2k guidelines)). 5. No previous systemic therapy for MCC. 6. Required values for initial laboratory tests: * WBC ≥ 2000/uL * ANC ≥ 1000/uL * Platelets ≥ 75 x 103/uL * Hemoglobin ≥ 8 g/dL (≥ 80 g/L) * Creatinine ≤ 2.0 x ULN * AST/ALT ≤ 2.5 x ULN * Total Bilirubin ≤ 2.0 x ULN, (except patients with Gilbert's Syndrome, who must have a total bilirubin less than 3.0 mg/dL) 7. ECOG performance status 0 or 1. 8. No active or chronic infection with HIV, Hepatitis B (HBV) or C (HCV). 9. Men and women, ≥ 18 years of age. 10. Women of childbearing potential (WOCBP) must be using an adequate method of contraception (Pearl-Index \< 1) to avoid pregnancy during treatment phase and for additional 5 months after the last dose of nivolumab, in such a manner that the risk of pregnancy is minimized. WOCBP include any female who has experienced menarche and who has not undergone successful surgical sterilization (hysterectomy, bilateral tubal ligation, or bilateral oophorectomy) or is not post-menopausal. WOCBP must have a negative serum or urine pregnancy test (minimum sensitivity 25 IU/L or equivalent units of HCG) within 72 hours before the start of nivolumab. 11. Men of fathering potential must be using an adequate method of contraception to avoid conception and for 7 months after the last dose of nivolumab in such a manner that the risk of pregnancy is minimized.

Exclusion criteria

1. Autoimmune disease: Patients with a history of inflammatory bowel disease, including ulcerative colitis and Crohn's Disease, are excluded from this study, as are patients with a history of symptomatic disease requiring systemic steroids (e.g., rheumatoid arthritis, systemic progressive sclerosis, systemic lupus erythematosus, autoimmune vasculitis); autoimmune motor neuropathy. 2. Other serious illnesses, e.g., serious infections requiring i.v. antibiotics. 3. The patient is known to be positive for Human Immunodeficiency Virus (HIV) or other chronic infections (HBV, HCV) or has another confirmed or suspected immunosuppressive or immune deficient condition. 4. Any underlying medical or psychiatric condition, which in the opinion of the investigator will make the administration of nivolumab hazardous or obscure the interpretation of adverse events (AEs), such as a condition associated with frequent diarrhea. 5. Any non-oncology vaccine therapy for up to 1 month before or after any dose of nivolumab. 6. A history of prior or current treatment with a T cell potentiating agent (e.g. IL-2, interferon, anti-CTLA-4, anti-CD137, anti-PD1, anti-PD-L1, or anti-OX40 antibody). 7. Chronic use of immunosuppressive agents or systemic corticosteroids. 8. Women of childbearing potential (WOCBP), defined above in Section 5.1, who: * are unwilling or unable to use an acceptable method of contraception to avoid pregnancy for additional 5 months after the last dose of investigational product * have a positive pregnancy test at baseline * are pregnant or breastfeeding. 9. The patient has psychiatric or addictive disorders that may compromise his/her ability to give informed consent or to comply with the trial procedures. 10. Prisoners or subjects who are compulsorily detained (involuntarily incarcerated) for treatment of either a psychiatric or physical (e.g., infectious) illness. 11. Men of reproductive potential unwilling to use an adequate method to avoid pregnancy for additional 7 months after the last dose of investigational product. 12. Use of any investigational or non-registered product (drug or vaccine) other than the study treatment.

Design outcomes

Primary

MeasureTime frameDescription
Disease-free survival (DFS) rate at 12 months1 years post last patient first treatment/randomizationThe number of patients alive and free of disease at 12 months after randomization in arm A compared to DFS in arm B.
Disease-free survival (DFS) rate at 48 months4 years post last patient first treatment/randomizationThe number of patients alive and free of disease at 48 months after randomization
Disease-free survival (DFS) rate at 24 months2 years post last patient first treatment/randomizationThe number of patients alive and free of disease at 24 months after randomization

Secondary

MeasureTime frameDescription
Overall survival rate at 24 months2 years post last patient first treatment/randomizationOverall survival rate at 24 months, defined as the number of patients alive at 24 months after randomization divided by the total number of patients randomized.
Number of adverse events1, 2 and 4 years post last patient first treatment/randomizationAdverse events according to CTCAE, Version 4.0 criteria, that are related to the administration of Ipilimumab
Overall survival rate at 12 months1 year post last patient first treatment/randomizationOverall survival rate at 12 months, defined as the number of patients alive at 12 months after randomization divided by the total number of patients randomized.
Overall survival rate at 48 months4 years post last patient first treatment/randomizationOverall survival rate at 48 months, defined as the number of patients alive at 48 months after randomization divided by the total number of patients randomized.
Disease-free survival (DFS)1, 2 and 4 years post last patient first treatment/randomizationTime from randomization to recurrence of tumor
Overall survival (OS)1, 2 and 4 years post last patient first treatment/randomizationTime from randomization to death of patient

Other

MeasureTime frameDescription
Quality of life (EORTC QLQ-C30) until 24 months after randomization2 years post last patient first treatment/randomizationThe patient's quality of life will be evaluated at baseline (pretreatment visit) and every 3 months until 24 months after randomization using a standard questionnaire
Distant-metastases-free survival (DMFS) at 48 months after randomization4 years post last patient first treatment/randomizationNumber of patients free of distant metastases at 48 months after randomization
Distant-metastases-free survival (DMFS) at 24 months after randomization2 years post last patient first treatment/randomizationNumber of patients free of distant metastases at 24 months after randomization
Distant-metastases-free survival (DMFS) at 12 months after randomization1 year post last patient first treatment/randomizationNumber of patients free of distant metastases at 12 months after randomization
Identification of prognostic/predictive biomarkers2 and 4 years post last patient first treatment/randomizationIdentify and validate prognostic/predictive biomarkers such as immune status, kinetics of the absolute lymphocyte count (ALC), or tumor microenvironment characteristics

Countries

Germany, Netherlands

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 24, 2026