Stage III Cutaneous Melanoma AJCC v7Phase 1/2NCT03325101
Dendritic Cell Therapy With Pembrolizumab for Metastatic or Unresectable Melanoma
A Phase 1/2 study testing Cryosurgery, Pembrolizumab and Pheresis in people with Stage III Cutaneous Melanoma AJCC v7 and Stage IIIA Cutaneous Melanoma AJCC v7, run by Mayo Clinic at 1 site in United States.
Trial summary
This phase Ib/II trial studies how well dendritic cell therapy after cryosurgery in combination with pembrolizumab works in treating patients with stage III-IV melanoma that cannot be removed by surgery. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Stage III Cutaneous Melanoma AJCC v7, Stage IIIA Cutaneous Melanoma AJCC v7, Stage IIIB Cutaneous Melanoma AJCC v7
- What is being tested?
- Cryosurgery, Pembrolizumab and Pheresis
- Type of treatment
- Injection or infusion, Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 7 participants
- Where
- 1 siteUnited States
- Study dates
- 15 Nov 2017to 14 Jun 2020
- Phase
- Phase 1/2
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Histologically or cytologically confirmed diagnosis of unresectable stage III or metastatic melanoma (stage IV) not amenable to curative local therapy
- Documented progression of disease after initiation of therapy with OR lack of response to therapy with a PD-1- or PD-L1-targeting monoclonal antibody (pembrolizumab, nivolumab, etc) after at least 18 weeks; NOTE: This treatment could have been at any time prior to registration
- Eastern Cooperative Oncology Group (ECOG) performance status (PS) 0 or 1
- Minimum of 3 radiographically apparent lesions such that there is:
- Minimum of one lesion in areas that have not been previously irradiated that is considered measurable by Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 criteria AND
- Minimum of two lesions in areas that have not been previously irradiated that are determined by interventional radiology to be of a size and in a location that a single probe could ablate at least 75% of the lesion; Note: Hepatic lesions measuring =< 3 cm may be treated, as determined by interventional radiology; Note: Brain metastases are not acceptable as lesions defining measurable disease, nor are they candidate lesions for cryoablation
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- Adequate venous access for apheresis as assessed by apheresis team; NOTE: If a central venous catheter is required for apheresis, the patient is not eligible
- Absolute neutrophil count (ANC) >= 1000/mm^3 obtained =< 14 days prior to registration
- Absolute lymphocyte count >= 500/mm^3 obtained =< 14 days prior to registration
- Platelet count >= 100,000/mm^3 obtained =< 14 days prior to registration
- Hemoglobin >= 10 g/dL obtained =< 14 days prior to registration
- Total bilirubin =< 1.5 x upper limit of normal (ULN), unless due to Gilbert?s disease obtained =< 14 days prior to registration
- Aspartate transaminase (AST)/serum glutamic-oxaloacetic transaminase (SGOT) and alanine transaminase (ALT)/serum glutamate pyruvate transaminase (SGPT) =< 2.5 x ULN obtained =< 14 days prior to registration
- Creatinine =< 1.5 x ULN or calculated creatinine clearance >= 60 mL/min for subject with creatinine ? 1.5 x institutional ULN obtained =< 14 days prior to registration
- Negative serum pregnancy test for persons of childbearing potential =< 7 days prior to registration
- Provide written informed consent
- Willing to return to the enrolling institution for follow-up (during active treatment and active monitoring phase of the study)
- Willing to provide tissue and blood samples for research purposes
- Willing to use adequate contraception while on the study and until 120 days after the last dose of study drug
Who cannot join
- Any of the following:
- Pregnant persons
- Nursing persons
- History of human immunodeficiency virus (HIV), hepatitis B, or hepatitis C
- Active tuberculosis or active, non-infectious pneumonitis
- Evidence of interstitial lung disease
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- Active infection requiring the use of systemic antibiotics
- Symptomatic congestive heart failure (New York Heart Association classification III or IV cardiovascular disease, myocardial infarction =< 6 months prior to registration, unstable angina pectoris or cardiac arrhythmia =< 3 months prior to registration, or cardiac arrhythmia
- Currently receiving or have received any other investigational agent considered as a treatment for the primary neoplasm =< 21 days prior to registration
- History of other primary malignancy requiring systemic treatment =< 3 years prior to registration; patients must not be receiving chemotherapy or immunotherapy for another cancer; patients must not have another active malignancy requiring active treatment; EXCEPTIONS: Non-melanotic skin cancer or carcinoma-in-situ of the cervix
- Failure to recover from prior side effects of immune checkpoint inhibitor therapy to =< grade 1; NOTE: Patients will not be excluded for adrenal insufficiency or hypothyroidism secondary to immunotherapy provided they are receiving hormonal replacement
- Major surgery =< 4 weeks prior to registration
- Prior chemotherapy, targeted therapy, or radiation therapy =< 2 weeks prior to registration or who has not recovered (i.e. to =< grade 1 or baseline) from an adverse event due to the previously administered therapy
- History of hypersensitivity and anaphylactoid reactions to pneumococcal vaccine or any component of the formulation, including diphtheria toxoid
- Active autoimmune disease such as Crohn?s disease, rheumatoid arthritis, Sjogrens? disease, systemic lupus erythematosus, or similar conditions requiring systemic treatment within the past 3 months or a documented history of clinically severe autoimmune disease/syndrome difficult to control in the past; EXCEPTIONS (the following are allowed):
- Vitiligo or resolved childhood asthma/atopy
- Intermittent use of bronchodilators or local steroid injections
- Hypothyroidism stable on hormone replacement
- Diabetes stable with current management
- History of positive Coombs test but no evidence of hemolysis
- Psoriasis not requiring systemic treatment
- Conditions not expected to recur in the absence of an external trigger
- Secondary adrenal insufficiency from previous hypophysitis, currently on physiologic replacement steroid dosing only
- Coagulopathy, including the use of therapeutic anticoagulants that cannot be discontinued for the cryoablation procedure; NOTE: Heparin for line patency without detectable lab abnormalities for coagulation will be allowed
- Corticosteroid use =< 14 days prior to registration; NOTE: Patients must be off systemic corticosteroids for at least 2 weeks prior to registration; this includes oral or IV route of administration; patients on chronic corticosteroids for adrenal insufficiency or other reasons may enroll if they receive less than 10 mg/day of prednisone (or equivalent); patients receiving inhaled or intranasal or intra-articular steroids are not excluded
- Active central nervous system (CNS) metastasis; NOTE: Patients with prior brain metastases that are asymptomatic without corticosteroid use and stable or improved >= 90 days after treatment with surgery or radiation are not excluded
- Receipt of a live vaccine =< 30 days prior to registration
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Phase Ib/II Study of Autologous Dendritic Cell Therapy Delivered Intratumorally After Cryoablation in Combination With Pembrolizumab for Patients With Metastatic or Unresectable Melanoma
This phase Ib/II trial studies how well dendritic cell therapy after cryosurgery in combination with pembrolizumab works in treating patients with stage III-IV melanoma that cannot be removed by surgery. Vaccines made from a person's white blood cells mixed with tumor proteins may help the body build an effective immune response to kill tumor cells. Cryosurgery, also known as cryoablation or cryotherapy, kills tumor cells by freezing them. Monoclonal antibodies, such as pembrolizumab, may block tumor growth in different ways by targeting certain cells. Giving dendritic cell therapy after cryosurgery in combination with pembrolizumab may work better in treating patients with melanoma.
Read the detailed description
PRIMARY OBJECTIVES OF PHASE I portion of the trial: To establish the safety and tolerability of the proposed treatment schedule in order to move it forward into the Phase II portion of the trial.
PRIMARY OBJECTIVES OF PHASE II portion of the trial:
- To determine the objective response rate (ORR) of pembrolizumab combined with cryoablation and intratumoral mature dendritic cells (mDCs) in patients with metastatic melanoma that has failed to respond or has stopped responding to initial therapy with a PD-1 axis-blocking monoclonal antibody.
SECONDARY OBJECTIVES:
- To assess the safety profile of pembrolizumab combined with cryoablation and intratumoral mDCs in patients with metastatic melanoma that have failed to respond or have stopped responding to initial therapy with a PD-1 axis-blocking monoclonal antibody.
II. To determine median progression-free survival (PFS) obtained with this approach in this patient population.
III. To determine median overall survival (OS) obtained with this approach in this patient population.
TERTIARY OBJECTIVES:
- To quantitate tumor infiltrating lymphocytes (TILs) in tumor biopsies prior to and following cryoablation and intratumoral mDCs.
II. To measure PD-L1 levels in tumor biopsies and blood biopsies prior to and following cryoablation and to assess whether a change in PD-L1 levels differ among those patients who met the criteria for clinical benefit (progression-free and on study for at least 6 months) and those who do not.
III. To measure peripheral blood mononuclear cells (PBMC) proliferation and function after coculture with frozen tumor before and after intratumoral mDC injection.
- Conditions
- Stage III Cutaneous Melanoma AJCC v7, Stage IIIA Cutaneous Melanoma AJCC v7, Stage IIIB Cutaneous Melanoma AJCC v7, Stage IIIC Cutaneous Melanoma AJCC v7, Stage IV Cutaneous Melanoma AJCC v6 and v7
- Being tested
- Cryosurgery, Pembrolizumab, Pheresis, Therapeutic Autologous Dendritic Cells
- Medical subject headings
- Melanoma
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
CryosurgeryProcedure or surgery
Also called cryoablation, cryosurgical ablation
Undergo cryosurgery
PembrolizumabBiological
Also called Keytruda, Lambrolizumab, MK-3475, SCH 900475
IV
PheresisProcedure or surgery
Also called Apheresis, Blood Component Removal, Collection, Apheresis/Leukapheresis, Hemapheresis
apheresis
Therapeutic Autologous Dendritic CellsBiological
Intra-tumoral injection
| Study group | Role | What they receive |
|---|---|---|
| Phase I Schedule 1 | Experimental | Phase I Schedule 1: Cycle length is 21 days with the exception of cycle 1 which may be extended an additional 7 days to allow for dendritic cell production.
Cycle 1 Day 1: Patients undergo apheresis over 4 hours and pembrolizumab IV over 30 minutes.
Cycle 2 \& Cycle 3 Day 1: Pembrolizumab 200 mg is administered by IV over 30 minutes.
Cycle 2 \& Cycle 3 either Day 1 or Day 2 (within 36 hours of receiving pembrolizumab): patients undergo cryosurgery (injection of 30-60 x 10^6 mDCs and an injection of 0.5 ml Prenar13 such that two distinct metastatic lesions are cryoablated, one during cycle 2 and the other during cycle 3.
Cycle 4 Day 1 and all subsequent cycles for a maximum of 2 years: Pembrolizumab 200 mg is administered by IV over 30 minutes Receives: Procedure: Cryosurgery; Biological: Pembrolizumab; Procedure: Pheresis; Biological: Therapeutic Autologous Dendritic Cells |
| Phase I Schedule -1 | Experimental | Phase I Schedule -1: Cycle length is 21 days with the exception of cycle 1 which may be extended an additional 7 days to allow for dendritic cell production.
Cycle 1 Day 1: Patients undergo apheresis over 4 hours and pembrolizumab IV over 30 minutes.
Cycle 2 \& Cycle 3 either Day 1 or Day 2 (within 36 hours of receiving pembrolizumab): patients undergo cryosurgery (injection of 30-60 x 10^6 mDCs and an injection of 0.5 ml Prenar13 such that two distinct metastatic lesions are cryoablated, one during cycle 2 and the other during cycle 3.
Cycle 4 Day 1 and all subsequent cycles for a maximum of 2 years: Pembrolizumab 200 mg is administered by IV over 30 minutes Receives: Procedure: Cryosurgery; Biological: Pembrolizumab; Procedure: Pheresis; Biological: Therapeutic Autologous Dendritic Cells |
| Phase II Schedule | Experimental | Regimen depends upon the results of the Phase I portion of the study. Receives: Procedure: Cryosurgery; Biological: Pembrolizumab; Procedure: Pheresis; Biological: Therapeutic Autologous Dendritic Cells |
What is being measured
The primary outcome is the main question the study is designed to answer.
Number of Participants Who Developed a DLT During the First 3 Cycles of Treatment.
The primary outcome of the Phase I portion of this trial was to establish the tolerability of the proposed treatment schedule in order to move it forward into the Phase II portion of the trial. A maximum of 6 patients was to be enrolled onto the Schedule 1. If at most one of these 6 patients developed a DLT during the first 3 treatment cycles, then Schedule #1 would be carried forward to the Phase II portion of the trial. If not, then an additional 6 patients would be treated with a modified Schedule 1 where Pembrolizumab was eliminated from cycles 2 \& 3. Dose-limiting toxicity (DLT) were defined as the following possibly, probably, or definitely related AEs to protocol therapy during first 3 treatment cycles: Grade 3+ infusion reactions, acute kidney injury, chronic kidney disease, pneumonitis; or Grade 2 infusion reactions, acute kidney injury, chronic kidney disease or pneumonitis that does not resolve to Grade 0-1 within 21 days.
Measured: Up to 3 months (3 cycles of 21 days and an additional 7 days for Cycle 1)
Secondary outcomes (2)
Incidence of Adverse Events
Assessed using Common Terminology Criteria for Adverse Events (CTCAE).
Measured: 30 months (through study completion)
Overall Survival
Time from registration to death due to any cause
Measured: 30 months (through study completion)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted30 Oct 2017
- Study start15 Nov 2017
- Primary completion14 Jun 2020
- Study completion14 Jun 2020
Why it stopped: poor accrual
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Stage III Cutaneous Melanoma AJCC v7Studies of the same condition, open and under way.
- More trials run by Mayo ClinicThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1/2
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Sequential
- Model description
- Group 1: Phase I Schedule 1 Group 2: Phase I Schedule -1 (if Phase 1 Schedule 1 not well tolerated) Group 3: Phase II Schedule base on the findings of the Phase I portion of the trial
- Masking
- None (open label)
- Enrolment
- 7 participants (actual)
Sponsor and investigators
- Lead sponsor
- Mayo Clinic
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Matthew S. Block, M.D., Ph.D., Principal investigator, Mayo Clinic
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03325101
- Sponsor's protocol ID
- MC1771
- Other IDs
- NCI-2017-01967, MC1771, 17-001666
- Status last verified
- Aug 2024
- First submitted
- 25 Oct 2017
- Last updated
- 12 Jun 2025
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- Yes: Data will be shared with investigators following the policies and procedures of the Mayo Clinic Cancer Center.
Study at a glance
From the registry record, last updated by the sponsor on 12 Jun 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Phase Ib/II Study of Autologous Dendritic Cell Therapy Delivered Intratumorally After Cryoablation in Combination With Pembrolizumab for Patients With Metastatic or Unresectable Melanoma
- ClinicalTrials.gov ID
- NCT03325101
- Acronym / sponsor ID
- MC1771
- Conditions
- Stage III Cutaneous Melanoma AJCC v7, Stage IIIA Cutaneous Melanoma AJCC v7, Stage IIIB Cutaneous Melanoma AJCC v7, Stage IIIC Cutaneous Melanoma AJCC v7, Stage IV Cutaneous Melanoma AJCC v6 and v7
- Phase
- Phase 1/2
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: poor accrual
- Enrolment
- 7 participants (actual)
- Lead sponsor
- Mayo ClinicUniversity, hospital or other
- Study start
- 15 Nov 2017 (actual)
- Primary completion
- 14 Jun 2020 (actual)
- Study completion
- 14 Jun 2020 (actual)
- First posted
- 30 Oct 2017 (actual)
- Results
- Posted 12 Jun 2025
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This phase Ib/II trial studies how well dendritic cell therapy after cryosurgery in combination with pembrolizumab works in treating patients with stage III-IV melanoma that cannot be removed by surgery. Vaccines made from a person's white blood cells mixed with tumor proteins may help the body build an effective immune response to kill tumor cells. Cryosurgery, also known as cryoablation or cryotherapy, kills tumor cells by freezing them. Monoclonal antibodies, such as pembrolizumab, may block tumor growth in different ways by targeting certain cells. Giving dendritic cell therapy after cryosurgery in combination with pembrolizumab may work better in treating patients with melanoma.
Detailed description
PRIMARY OBJECTIVES OF PHASE I portion of the trial: To establish the safety and tolerability of the proposed treatment schedule in order to move it forward into the Phase II portion of the trial.
PRIMARY OBJECTIVES OF PHASE II portion of the trial:
- To determine the objective response rate (ORR) of pembrolizumab combined with cryoablation and intratumoral mature dendritic cells (mDCs) in patients with metastatic melanoma that has failed to respond or has stopped responding to initial therapy with a PD-1 axis-blocking monoclonal antibody.
SECONDARY OBJECTIVES:
- To assess the safety profile of pembrolizumab combined with cryoablation and intratumoral mDCs in patients with metastatic melanoma that have failed to respond or have stopped responding to initial therapy with a PD-1 axis-blocking monoclonal antibody.
II. To determine median progression-free survival (PFS) obtained with this approach in this patient population.
III. To determine median overall survival (OS) obtained with this approach in this patient population.
TERTIARY OBJECTIVES:
- To quantitate tumor infiltrating lymphocytes (TILs) in tumor biopsies prior to and following cryoablation and intratumoral mDCs.
II. To measure PD-L1 levels in tumor biopsies and blood biopsies prior to and following cryoablation and to assess whether a change in PD-L1 levels differ among those patients who met the criteria for clinical benefit (progression-free and on study for at least 6 months) and those who do not.
III. To measure peripheral blood mononuclear cells (PBMC) proliferation and function after coculture with frozen tumor before and after intratumoral mDC injection.
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Sequential
- Masking
- None (open label)
- Number of arms
- 3
- Model description
- Group 1: Phase I Schedule 1 Group 2: Phase I Schedule -1 (if Phase 1 Schedule 1 not well tolerated) Group 3: Phase II Schedule base on the findings of the Phase I portion of the trial
| Arm | Type | Receives |
|---|---|---|
| Phase I Schedule 1 | Experimental | Procedure: Cryosurgery, Biological: Pembrolizumab, Procedure: Pheresis, Biological: Therapeutic Autologous Dendritic CellsPhase I Schedule 1: Cycle length is 21 days with the exception of cycle 1 which may be extended an additional 7 days to allow for dendritic cell production. Cycle 1 Day 1: Patients undergo apheresis over 4 hours and pembrolizumab IV over 30 minutes. Cycle 2 \& Cycle 3 Day 1: Pembrolizumab 200 mg is administered by IV over 30 minutes. Cycle 2 \& Cycle 3 either Day 1 or Day 2 (within 36 hours of receiving pembrolizumab): patients undergo cryosurgery (injection of 30-60 x 10^6 mDCs and an injection of 0.5 ml Prenar13 such that two distinct metastatic lesions are cryoablated, one during cycle 2 and the other during cycle 3. Cycle 4 Day 1 and all subsequent cycles for a maximum of 2 years: Pembrolizumab 200 mg is administered by IV over 30 minutes |
| Phase I Schedule -1 | Experimental | Procedure: Cryosurgery, Biological: Pembrolizumab, Procedure: Pheresis, Biological: Therapeutic Autologous Dendritic CellsPhase I Schedule -1: Cycle length is 21 days with the exception of cycle 1 which may be extended an additional 7 days to allow for dendritic cell production. Cycle 1 Day 1: Patients undergo apheresis over 4 hours and pembrolizumab IV over 30 minutes. Cycle 2 \& Cycle 3 either Day 1 or Day 2 (within 36 hours of receiving pembrolizumab): patients undergo cryosurgery (injection of 30-60 x 10^6 mDCs and an injection of 0.5 ml Prenar13 such that two distinct metastatic lesions are cryoablated, one during cycle 2 and the other during cycle 3. Cycle 4 Day 1 and all subsequent cycles for a maximum of 2 years: Pembrolizumab 200 mg is administered by IV over 30 minutes |
| Phase II Schedule | Experimental | Procedure: Cryosurgery, Biological: Pembrolizumab, Procedure: Pheresis, Biological: Therapeutic Autologous Dendritic CellsRegimen depends upon the results of the Phase I portion of the study. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (19 listed)
- Histologically or cytologically confirmed diagnosis of unresectable stage III or metastatic melanoma (stage IV) not amenable to curative local therapy
- Documented progression of disease after initiation of therapy with OR lack of response to therapy with a PD-1- or PD-L1-targeting monoclonal antibody (pembrolizumab, nivolumab, etc) after at least 18 weeks; NOTE: This treatment could have been at any time prior to registration
- Eastern Cooperative Oncology Group (ECOG) performance status (PS) 0 or 1
- Minimum of 3 radiographically apparent lesions such that there is:
- Adequate venous access for apheresis as assessed by apheresis team; NOTE: If a central venous catheter is required for apheresis, the patient is not eligible
Key exclusion criteria (27 listed)
- Any of the following:
- History of human immunodeficiency virus (HIV), hepatitis B, or hepatitis C
- Active tuberculosis or active, non-infectious pneumonitis
- Evidence of interstitial lung disease
- Active infection requiring the use of systemic antibiotics
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| CryosurgeryAlso: cryoablation, cryosurgical ablationUndergo cryosurgery | Procedure or surgery | Phase I Schedule -1, Phase I Schedule 1, Phase II Schedule |
| PembrolizumabAlso: Keytruda, Lambrolizumab, MK-3475, SCH 900475IV | Biological | Phase I Schedule -1, Phase I Schedule 1, Phase II Schedule |
| PheresisAlso: Apheresis, Blood Component Removal, Collection, Apheresis/Leukapheresis, Hemapheresisapheresis | Procedure or surgery | Phase I Schedule -1, Phase I Schedule 1, Phase II Schedule |
| Therapeutic Autologous Dendritic CellsIntra-tumoral injection | Biological | Phase I Schedule -1, Phase I Schedule 1, Phase II Schedule |
Primary outcome
Number of Participants Who Developed a DLT During the First 3 Cycles of Treatment.
Time frame: Up to 3 months (3 cycles of 21 days and an additional 7 days for Cycle 1)
The primary outcome of the Phase I portion of this trial was to establish the tolerability of the proposed treatment schedule in order to move it forward into the Phase II portion of the trial. A maximum of 6 patients was to be enrolled onto the Schedule 1. If at most one of these 6 patients developed a DLT during the first 3 treatment cycles, then Schedule #1 would be carried forward to the Phase II portion of the trial. If not, then an additional 6 patients would be treated with a modified Schedule 1 where Pembrolizumab was eliminated from cycles 2 \& 3. Dose-limiting toxicity (DLT) were defined as the following possibly, probably, or definitely related AEs to protocol therapy during first 3 treatment cycles: Grade 3+ infusion reactions, acute kidney injury, chronic kidney disease, pneumonitis; or Grade 2 infusion reactions, acute kidney injury, chronic kidney disease or pneumonitis that does not resolve to Grade 0-1 within 21 days.
2 secondary outcomes
Incidence of Adverse Events
Time frame: 30 months (through study completion)
Overall Survival
Time frame: 30 months (through study completion)
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 12 Jun 2025.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Individual participant dataSharing planned: Yes. Data will be shared with investigators following the policies and procedures of the Mayo Clinic Cancer Center.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Matthew S. Block, M.D., Ph.D. principal investigator
Mayo Clinic
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1/2 study testing Cryosurgery, Pembrolizumab and Pheresis in people with Stage III Cutaneous Melanoma AJCC v7 and Stage IIIA Cutaneous Melanoma AJCC v7, run by Mayo Clinic at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 19 inclusion and 27 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: stopped early, as of the sponsor's last update on 12 Jun 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this combined phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 12 Jun 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Number of Participants Who Developed a DLT During the First 3 Cycles of Treatment. (time frame: Up to 3 months (3 cycles of 21 days and an additional 7 days for Cycle 1)). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Jun 2025.