A Phase 1/2 interventional study of [203Pb]VMT01 and [212Pb]VMT01 in Recurrent Melanoma (Skin), Metastatic Melanoma and Melanoma Stage IV, sponsored by Perspective Therapeutics. Recruiting at 16 sites in United States. Open to participants aged 18 Years to 90 Years. Per ClinicalTrials.gov, last updated 2026-10-13.
Sponsored by Perspective Therapeutics · Phase 1/2, Interventional, and Treatment
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Among 2,048 studies in Melanoma with a site in United States — 243 open to participants now, 439 under way, 32 of them phase 3. Melanoma · United States.
Among the 2,048 studies in Melanoma with a site in United States, this one is the 163rd largest by planned enrollment of the 1,748 interventional ones that give a count, is one of 73 that started in 2023, is one of 287 in phase 1/2, reaches primary completion later than 264 of the 434 other live ones, and was the 1,794th registered.
3,372 studies on the registry are indexed under Melanoma; 580 are open to participants now.
Browse Melanoma studies →243 of the 2,048 studies in Melanoma with a site in United States are open now. Recruiting first, the newest first:
Children's Oncology Group · Sites in United States
Ages up to 25
John Kirkwood · Sites in United States
Ages 18+
University of Wisconsin, Madison · Sites in United States
Ages 18+
H. Lee Moffitt Cancer Center and Research Institute · Sites in United States
Ages 18+ · Healthy volunteers
University of Colorado, Denver · Sites in United States
Ages 55+
A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →
Of the 468 Melanoma studies recruiting now, 381 (81%) set no upper age limit and 49 (10%) stop at 75 or younger; 47 take children under 18; 29 take healthy volunteers.
This study: 18 Years to 90 Years · all sexes · no healthy volunteers.
The full table on the hub →This tab as a report to print or save as PDF → With an account.
2,048 studies; the count open now beside each. This study's row is marked.
A study in two phases is counted once above. Listed by phase, each with its combined phases: Phase 1 934 · Phase 2 907 · Phase 3 115 · Phase 4 11
First in 1991; this study’s year is marked. 73 started in 2023.
By drug class, each counting the studies that test any of its medicines:
This study's planned enrollment of 300 is above the median of 40 across 2,650 interventional studies indexed under Melanoma.
Median enrollment 37 across the 1,748 interventional studies, 156 across the 212 observational. Of the 1,481 that completed or were terminated, 598 (40%) have results posted.
This tab as a report to print or save as PDF → With an account.
799 of 2,048 have an industry lead sponsor. The 10 most frequent:
Perspective Therapeutics is the lead sponsor of 4 studies on the registry; 3 are open to participants now.
Perspective Therapeutics has 2 studies filed under Melanoma — fewer than ten, so there is no comparison to draw.
141 of the studies in Melanoma with a site in United States that are under way reach primary completion within a year, 5 of them phase 3. Phase 3 first, then by date:
| Study | Primary completion |
|---|---|
| NCT05608291Phase 3Regeneron PharmaceuticalsA Trial to See if the Combination of Fianlimab With Cemiplimab Works Better Than Pembrolizumab for Preventing or Delaying Melanoma From Coming Back After it Has Been Removed With Surgery | 2027-01-15 |
| NCT05987332Phase 3IDEAYA BiosciencesIDE196 (Darovasertib) in Combination With Crizotinib as First-line Therapy in Metastatic Uveal Melanoma | 2027-01-15 |
| NCT06246916Phase 3Regeneron PharmaceuticalsA Study With Combinations of Anti-LAG-3 and Anti-PD-1 Antibodies in Adult Participants With Advanced or Metastatic Melanoma (Harmony Head-to-Head) | 2027-03-22 |
| NCT01223248Phase 3Memorial Sloan Kettering Cancer CenterRandomized Study Comparing Two Dosing Schedules for Hypofractionated Image-Guided Radiation Therapy | 2027-10 |
| NCT06112314Phase 3Immunocore LtdIMC-F106C Regimen Versus Nivolumab Regimens in Previously Untreated Advanced Melanoma (PRISM-MEL-301) | 2027-10-16 |
Add all 141 to your calendar (.ics) → With an account.
Among the 2,048 studies in Melanoma with a site in United States, from their registry updates:
This tab as a report to print or save as PDF → With an account.
In this first-in human, phase I/IIa study, the safety and efficacy of [212Pb]VMT01, an alpha-particle emitting therapeutic agent targeted to melanocortin sub-type 1 receptor (MC1R) is being evaluated as a monotherapy and in combination with nivolumab in subjects with unresectable and metastatic melanoma.
This is a prospective, multi-center open-label dose-finding, dose-expansion study of [212Pb]VMT01 as a monotherapy or in combination with nivolumab in up to 300 subjects with histologically confirmed melanoma and a positive MC1R imaging scan with imaging agents [203Pb]VMT01 or [68Ga]VMT02.
MC1R is a receptor that is expressed on the surface of melanoma cells and therefore is an attractive therapeutic target for melanoma treatment. Lead-212 ([212Pb]-) based peptide-radiopharmaceuticals are an emerging class of targeted alpha-particle cancer therapies that have potential to improve delivery of a highly effective form of radiation.
This study will be conducted in 3 parts:
Part 1: Monotherapy Dose-Finding
Part 2: Combination-Therapy Dose-Finding
Part 3: Dose Expansion
Enrolled subjects in Monotherapy may receive up to 3 doses of [212Pb]VMT01 approximately 8 weeks apart and subjects in combination therapy may receive up to 3 doses of [212Pb]VMT01 along with nivolumab. Nivolumab will be administered every 4 weeks for up to 24 months.
A Dosimetry sub-set utilizing an imaging surrogate, [203Pb]VMT01, has been incorporated into the study in order to assess organ biodistribution and tumor uptake of the investigational products. This study will also estimate radiation dosimetry and correlate uptake of the investigation products with observed toxicities and efficacy.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Additional exclusion criteria for subjects who will receive combination therapy with nivolumab:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.
PD-1, PD-L1 and CTLA-4 are proteins that act as brakes on the immune system. Checkpoint inhibitors, such as pembrolizumab or nivolumab, block them so the immune system can attack a cancer.
PD-L1 can also be measured in a tumour sample. Some scores count stained tumour cells only (TPS); others also count certain immune cells (CPS). The study names the score and the minimum it uses.
A planned gap after a treatment, so that its effects can lessen before the study treatment or a study assessment. Ask the study team and the doctor who prescribed it before changing any medicine.
The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.
The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.
The standard rules for measuring tumours on CT or MRI scans, to tell whether a cancer is shrinking, stable or growing during treatment.
“Measurable disease per RECIST 1.1” usually means at least one tumour 10 mm or more at its longest on a CT scan, or a lymph node 15 mm or more across its short axis.
Able to have children. For women this usually means from the first period until menopause, unless permanently unable to through surgery; for men, unless permanently sterile. Read who the line is about — participants, women, men, or their partners.
Criteria about it usually ask for contraception during the study and for a time after it.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.
Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.
After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Metastases
Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
PD-1, PD-L1 and checkpoint inhibitors
PD-1, PD-L1 and CTLA-4 are proteins that act as brakes on the immune system. Checkpoint inhibitors, such as pembrolizumab or nivolumab, block them so the immune system can attack a cancer.
PD-L1 can also be measured in a tumour sample. Some scores count stained tumour cells only (TPS); others also count certain immune cells (CPS). The study names the score and the minimum it uses.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Washout period
A planned gap after a treatment, so that its effects can lessen before the study treatment or a study assessment. Ask the study team and the doctor who prescribed it before changing any medicine.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Measurable disease
The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.
The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
RECIST
The standard rules for measuring tumours on CT or MRI scans, to tell whether a cancer is shrinking, stable or growing during treatment.
“Measurable disease per RECIST 1.1” usually means at least one tumour 10 mm or more at its longest on a CT scan, or a lymph node 15 mm or more across its short axis.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Reproductive potential
Able to have children. For women this usually means from the first period until menopause, unless permanently unable to through surgery; for men, unless permanently sterile. Read who the line is about — participants, women, men, or their partners.
Criteria about it usually ask for contraception during the study and for a time after it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ECOG performance status
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Life expectancy
The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Cancer (malignancy)
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Investigational drug or device
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Autoimmune disease
A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.
Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Immunosuppression
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis B tests
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis C tests
Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.
After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hypersensitivity
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Enrolled subjects will be treated with \[212Pb\]VMT01 to determine optimal biological dose (OBD). A dosimetry sub-set utilizing \[203Pb\]VMT01 has been incorporated.
Drug: [203Pb]VMT01 · Drug: [212Pb]VMT01
Enrolled subjects will be treated with \[212Pb\]VMT01 in combination with nivolumab to determine OBD. A dosimetry sub-set utilizing \[203Pb\]VMT01 has been incorporated.
Drug: [203Pb]VMT01 · Drug: [212Pb]VMT01 · Drug: Nivolumab
Subjects will be enrolled at previously identified recommended phase 2 dose (RP2D) for confirmation of the RP2D and regimen for the Phase 2 dose-expansion cohort. A dosimetry sub-set utilizing \[203Pb\]VMT01 has been incorporated.
Drug: [203Pb]VMT01 · Drug: [212Pb]VMT01
Subjects will be enrolled at previously identified RP2D for its confirmation and verification of regimen for the Phase 2 dose-expansion cohort. A dosimetry sub-set utilizing \[203Pb\]VMT01 has been incorporated.
Drug: [203Pb]VMT01 · Drug: [212Pb]VMT01 · Drug: Nivolumab
\[203Pb\]VMT01 is administered intravenous (IV) as an imaging agent for SPECT/CT
Subjects with positive uptake of \[203Pb\]VMT01 will receive a fixed dose of \[212Pb\]VMT01 administered IV every 8 weeks starting at Cycle 1 Day 1.
For all combination-therapy cohorts, 480 mg nivolumab will be administered every 4 weeks as an IV infusion.
Number of subjects with dose-limiting toxicities (DLTs) after the first administration of [212Pb]VMT01 as a monotherapy or in combination with nivolumab.
DLTs describe side effects of a drug that are serious enough to prevent an increase in dose
Time frame: Incidence of DLTs during the first 42 days of study Treatment will be assessed.
Objective response rate (ORR) per Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1
Percentage of subjects with complete responses (CRs) or partial responses (PRs) to at least 1 administration of \[212Pb\]VMT01 as a monotherapy or in combination with nivolumab
Time frame: Up to approximately 2 years
Incidence and severity of adverse events (AEs) and serious adverse events (SAEs) following administration of [212Pb]VMT01 as a monotherapy or in combination with nivolumab
Any untoward medical occurrence in a clinical investigational participant administered \[212Pb\]VMT01 as a monotherapy or in combination with nivolumab. Associated AE or SAE is assessed by Common Terminology Criteria for Adverse Events (CTCAE) Version 5.0
Time frame: Up to approximately 2 years
Duration of response (DOR) following treatment with [212Pb]VMT01 as a monotherapy and in combination with nivolumab as assessed by RECIST v1.1 criteria
DOR is time interval between the onset of a treatment response and the subsequent progression of disease or death
Time frame: Up to approximately 2 years
Progression free survival (PFS) for subjects receiving at least one administration of [212Pb]VMT01 as a monotherapy and in combination with nivolumab, as assessed by RECIST v1.1 criteria
PFS a measure of how long a patient with a cancer lives without their cancer progressing or worsening.
Time frame: Up to approximately 2 years
Determination of pharmacokinetic properties (PK) of [212Pb]VMT01: Area under the concentration versus time curve
Blood radioactivity PK endpoint reported as Ci\*h/L
Time frame: Up to week 16
Determination of pharmacokinetic properties of [212Pb]VMT01]: Apparent terminal elimination half-life (T1/2)
Blood radioactivity PK endpoint (reported as time in minutes)
Time frame: Up to week 16
Not enrolling at this site.
Plan to share: Undecided — Protocol, CSR
No publications or documents are linked to this record.
Started Jun 2023 (actual). Primary completion is estimated for Dec 2027, 54 months after the start.
Of 135 industry-sponsored phase 1/2 interventional studies under Melanoma, half reached primary completion within 61 months of starting (the median), counting those still running; a quarter within 41 and three quarters within 84. This study's planned 54 months is below that.
Counting every sponsor, half of 220 studies reached it within 61 months; a quarter within 42 and three quarters within 85.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
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Perspective Therapeutics