ClinicalTrials.gg
RecruitingNCT06305962Updated Nov 2, 2026

177Lu-anti-PD-L1 sdAb in Metastatic Solid Tumors

An Early Phase 1 interventional study of 177Lu-RAD204 in PDL1 Gene Mutation, Non Small Cell Lung Cancer and Small Cell Lung Cancer ( SCLC ), sponsored by Radiopharm Theranostics, Ltd. Recruiting at 6 sites in Australia. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-11-02.

Sponsored by Radiopharm Theranostics, Ltd · Early Phase 1, Interventional, and Treatment

From the registry’s dates

  • Started Jun 2024; still recruiting 2 years 5 months later.
Updated Nov 2, 2026Site recruiting status changedEligibility revised+2 moreGo to Updates ↓

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Phase
Early Phase 1
Study type
Interventional
Enrollment
30
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-15

Among 497 studies in Carcinoma, Non-Small-Cell Lung with a site in Australia — 121 open to participants now, 213 under way, 83 of them phase 3. Carcinoma, Non-Small-Cell Lung · Australia.

Planned enrollment
442nd of 484
30 · median 271
Started
2024
with 43 others
Phase 1
115 of 497
28 open now
Primary completion
2027-12
later than 113 of 212 live
Registered
395th of 497
by date

Among the 497 studies in Carcinoma, Non-Small-Cell Lung with a site in Australia, this one is the 442nd largest by planned enrollment of the 484 interventional ones that give a count, is one of 44 that started in 2024, is one of 115 in phase 1, reaches primary completion later than 113 of the 212 other live ones, and was the 395th registered.

Carcinoma, Non-Small-Cell Lung

7,624 studies on the registry are indexed under Carcinoma, Non-Small-Cell Lung; 1,837 are open to participants now.

Browse Carcinoma, Non-Small-Cell Lung studies →

Open to participants now

121 of the 497 studies in Carcinoma, Non-Small-Cell Lung with a site in Australia are open now. Recruiting first, the newest first:

116 more — sign in →

All 121 open studies →

A study can be open while its sites in Australia have not opened yet or have stopped. Only those recruiting at a site in Australia →

Who these studies take

Of the 1,326 Carcinoma, Non-Small-Cell Lung studies recruiting now, 988 (75%) set no upper age limit and 225 (17%) stop at 75 or younger; 34 take children under 18; 40 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 497 studies in Carcinoma, Non-Small-Cell Lung with a site in Australia, or all of them as a file.
02

Study summary

This is a Phase 0/1, First-in-Human (FIH), study to evaluate safety, tolerability of 177Lu-RAD204 in participants with selected solid tumors, and to determine the MTD and/or recommended dose for future exploration.

Read the detailed description

This is a Phase 0/1, First-in-Human (FIH), study to evaluate safety and tolerability of 177Lu-RAD204 in participants with selected solid tumors, and to determine the MTD and/or recommended dose for future exploration. Biodistribution, radiation dosimetry, and preliminary anti-tumor activity of 177Lu-RAD204 will be evaluated. During the Screening Period (up to 4 weeks), participants will receive an imaging dose (low dose of 177Lu-RAD204), to assess dosimetry and to confirm the presence of lesions, prior to enrolling in the Treatment Period.

Treatment Period (Phase 1 dose escalation): 177Lu-RAD204 treatment

  • Participants will receive a treatment dose every 6 weeks (a cycle).
  • Participants may be treated with multiple cycles, as long as they appear to derive clinical benefit as determined by the Investigator and provided there is adequate clinical safety and organ dosimetry data.
  • To improve the ratio of tumor to healthy organ distribution of 177Lu-RAD204 an excess of unlabeled RAD204 may be administered.
03

Conditions studied

  • PDL1 Gene Mutation
  • Non Small Cell Lung Cancer
  • Small Cell Lung Cancer ( SCLC )
  • TNBC, Triple Negative Breast Cancer
  • Cutaneous Melanoma
  • HNSCC
  • Endometrial Cancer
  • Mmr Deficiency
  • MSI-High

Keywords

  • PDL1 Positive
  • Non Small Cell Lung Cancer
  • Small Cell Lung Cancer (SCLC)
  • TNBC, Triple Negative Breast Cancer
  • Cutaneous Melanoma
  • HNSCC
  • Endometrial cancer
  • Mmr Deficiency
  • MSI-High
04

Who can participate

The criteria were revised on the registry on Nov 2, 2026. See what changed

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

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.

Inclusion criteria

  1. Adult participants ≥ 18 years of age.
  2. Participants with a documented history of histopathologically confirmed locally advanced, inoperable or NSCLC, SCLC, TNBC, cutaneous melanoma, HNSCC, endometrial cancer or any cancer that is known to be MMR deficient or MSI high with documented disease progression during or after their most recent line of anticancer therapy. Participants must be refractory to or have refused standard of care therapy or have no standard of care therapy available that is likely to provide clinical benefit.
  3. Participants with positive NSCLC, SCLC, TNBC, cutaneous melanoma, HNSCC, endometrial cancer or any cancer that is known to be MMR deficient or MSI high:

    • If the participant tumour's PD-L1 expression status is unknown, PD-L1 positivity will be determined by IHC testing using a validated test (tumour tissue can be obtained from archived samples or from a freshly obtained ).
  4. Must have at least 1 measurable target lesion according to version 1.1.
  5. (ECOG) performance status ≤ 2.
  6. Participants must have a of ≥ 4 months in the opinion of the Investigator.
  7. Women of (WOCBP) must have a negative beta-human chorionic gonadotropin (β-hCG) test and must not be breastfeeding.
  8. WOCBP must agree to use a highly effective method of
  9. Participants with previously treated are eligible to participate if:

    • they are neurologically and radiologically stable (no evidence of progression by imaging; same imaging modality [magnetic resonance imaging (MRI) or computed tomography (CT) scan] must be used for each assessment) for at least 28 days prior to the first dose of 177Lu-RAD204,
    • do not require to treat associated neurological symptoms, and • have no history of or spinal cord compression.
    • Participants with active brain metastases who have not received brain-directed therapy such as radiotherapy are not eligible to enroll.
  10. Participants must have positive lesion(s) identified by 177Lu-RAD204 imaging dose SPECT/CT.

Exclusion criteria

Exclusion Criteria:

  1. History of prior organ transplant.
  2. Any other known, active , except for treated cervical intraepithelial neoplasia or non-melanoma skin cancer.
  3. Have any medical condition that would, in the Investigator's judgment, prevent the participant's full participation in the clinical study due to safety concerns or compliance with clinical study procedures
  4. Residual toxicity ≥ Grade 2 from prior anti-cancer therapy (except alopecia). Patients with Grade 2 or higher toxicity due to prior treatment may be allowed on a case-by-case basis in discussion with the study Sponsor.
  5. History of uncontrolled allergic reactions and/or known or expected to protein therapeutics
  6. Inadequate organ functions as reflected in laboratory parameters:

    • or body surface area (BSA) adjusted estimated (eGFR) (calculated using any clinically validated formula, preferably Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI), or measured) \< 60 mL/min
    • count of \< 100 × 109/L
    • (ANC) \< 1.5 × 109/L
    • \< 9 g/dL
    • (ALT) or aspartate aminotransferase (AST) > 3 × , or > 5 × ULN for patients with known liver
    • Total > 1.5 × ULN, except for patients with documented Gilbert's syndrome who are eligible if total bilirubin ≤ 3 × ULN
    • For participants not taking warfarin or other anticoagulants: (INR) ≥ 1.5 or prothrombin time (PT) ≥ 1.5 × ULN; and either partial thromboplastin time or activated partial thromboplastin time (PTT or aPTT) ≥1.5 × ULN. Participants taking warfarin must be on a stable dose that results in a stable INR \< 3.5. Among participants receiving other anticoagulant therapy, PT or aPTT must be within the intended therapeutic range of the anticoagulant.
  7. Patients requiring blood product transfusion within 4 weeks of first dose of 177Lu-RAD204tr are not eligible to participate.
  8. cardiovascular disease
  9. Participation in any other trial
  10. Pregnant or lactating women.
  11. Received anti-cancer therapy, including chemotherapy, immunotherapy, radiation therapy, biologic, herbal therapy, or any investigational therapy or investigational device, within 28 days prior to the first dose of 177Lu-RAD204tr.
  12. Has received prior therapy with an , anti-PD-L1, or anti PD L2 agent, or with an agent directed to another stimulatory or co-inhibitory T-cell receptor (e.g. CTLA-4, OX 40, CD137), and was discontinued from that treatment due to a Grade 3 or higher immune-mediated AE.
  13. Has had or is scheduled to have major surgery \< 28 days prior to the first dose of 177Lu-RAD204tr.
  14. Positive status for (HIV).
  15. Active or chronic or C.
  16. Any medical condition which, in the opinion of the Investigator, places the participant at an unacceptably high risk for toxicities.
  17. Any uncontrolled intercurrent illness or clinically significant uncontrolled condition(s).
Terms in these criteria, in plain language(27)

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.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

Metastases

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 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.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

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.

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.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

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.

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.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

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.

Brain metastases

Cancer deposits in the brain from a cancer that started elsewhere in the body (CNS metastases include the spinal cord).

Studies differ: some leave out any brain metastases, some accept ones treated and stable for some weeks. Check what this study allows.

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.

Leptomeningeal disease

Cancer that has spread to the leptomeninges, the thin layers covering the brain and spinal cord, and the fluid between them. It is not the same as brain metastases.

Criteria often treat it separately, and many studies leave it out even where treated brain metastases are allowed.

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.

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.

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Absolute neutrophil count (ANC)

The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.

It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

INR, PT and aPTT (clotting tests)

Blood tests of how long blood takes to clot. The INR is the prothrombin time (PT) put on a common scale; about 1 is usual for someone not taking a blood thinner.

Criteria often make an exception for people on a blood thinner such as warfarin, whose INR is raised on purpose.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

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.

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.

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.

05

Study design

Phase
Early Phase 1
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
30 participants (estimated)

Study arms

  • Experimental
    177Lu-RAD204

    Escalating doses of 177 Lu-RAD204 with or without RAD204 every 6 weeks

    Drug: 177Lu-RAD204

Interventions

  • Drug177Lu-RAD204

    177Lu-RAD204 administered at Screening and every 6 weeks at escalating doses

06

What researchers measure

Primary outcomes

  1. Safety and tolerability of 177Lu-RAD204

    TEAEs as defined by CTCAE v5.0

    Time frame: 6 weeks

  2. Recommended dose(s) of 177Lu-RAD204 for future exploration

    Incidence of dose-limiting toxicities (DLTs)

    Time frame: 6 weeks

Secondary outcomes

  1. Preliminary antitumor activity of 177Lu-RAD204tr

    Objective response rates (ORR) as assessed by RECIST v1.1

    Time frame: Up to 30 weeks

  2. Radiation dosimetry of 177Lu-RAD204

    Percent of injected 177Lu-RAD204 activity (%IA) vs time in selected organs and tumors

    Time frame: 6 weeks

  3. Radiation dosimetry of different doses of unlabeled RAD204 on the biodistribution of 177LuRAD204

    Absorbed Radiation doses in critical organs

    Time frame: 6 weeks

07

Study locations

4 of 6 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Jun 2024 (actual). Primary completion is estimated for Dec 2027, 42 months after the start.

Of 473 industry-sponsored phase 1 interventional studies under Carcinoma, Non-Small-Cell Lung, half reached primary completion within 49 months of starting (the median), counting those still running; a quarter within 29 and three quarters within 66. This study's planned 42 months is below that.

Counting every sponsor, half of 699 studies reached it within 50 months; a quarter within 31 and three quarters within 70.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 22, 2024
First posted
Mar 12, 2024
StartActual
Jun 3, 2024
Primary completionEst.
Dec 2027
CompletionEst.
Dec 2027
Last update
Nov 2, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Sites
1 site added. Cancer Research SA (CRSA) is now Completed
Show site
  • Gosford Hospital · Gosford, Australia
Nov 2, 2026
Eligibility
5 inclusion criteria edited, 2 added, 8 removed; 11 exclusion criteria edited, 9 removed
What changed in the criteria
Inclusion criteria
  • RemovedWilling and able to provide informed consent prior to start of any study procedures and assessments and must be willing to comply with all study procedures.
  • EditedParticipants with a documented history of histopathologically confirmed relapsed/refractory locally advanced, inoperable or metastatic NSCLC, SCLC, TNBC, cutaneous melanoma, HNSCC, endometrial cancer or any cancer that is known to be MMR deficient or MSI high with documented disease progression during or after their most recent line of anticancer therapy. Participants must be refractory to or have refused standard of care therapy (including PD-1/PD-L1 inhibitors) or have refused or have no standard of care therapy available that is likely to provide clinical benefit.
  • EditedIf the participant tumour's PD-L1 expression status is unknown, PD-L1 positivity maywill be determined in a pre-screening step whereby the participant may be approached to provide written informed consent to have their tumour tissue undergoby IHC testing as determined byusing a validated test (tumour tissue maycan be obtained from archived samples or from a freshly obtained biopsy).
  • RemovedAny number of prior treatment lines are allowed.
  • RemovedWomen of childbearing potential (WOCBP) must have a negative beta-human chorionic gonadotropin (β-hCG) test and must not be breastfeeding. WOCBP are defined as those who are not surgically sterile or post-menopausal. Female participants will be considered post-menopausal if they have been amenorrheic for 12 months without an alternative medical cause. Female participants < 50 years old who meet the criteria for post-menopausal status without previous surgical sterilisation should be considered for further investigation with luteinising hormone (LH) and follicle stimulating hormone (FSH) levels to confirm serological post-menopausal status.
  • RemovedWOCBP must agree to use a highly effective method of contraception during the study and for 14 days after the last injection of 177Lu-RAD204im and/or 6 months after the last dose of 177Lu-RAD204tr, whichever occurs later. Acceptable methods of contraception are described in Section 13.3 of the Protocol.
  • RemovedMale participants who are able to father a child must agree to avoid impregnating a partner and to adhere to a highly effective method of contraception during the study and for 14 days after the last injection of 177Lu-RAD204im and/or 6 months after the last dose of 177Lu-RAD204tr, whichever occurs later. All male participants must agree to not donate sperm during the study and for 14 days after the last injection of 177Lu-RAD204im and/or 6 months after the last dose of Lu-RAD204tr, whichever occurs later. Acceptable methods of contraception are described in Section 13.3 of the Protocol.
  • AddedWomen of childbearing potential (WOCBP) must have a negative beta-human chorionic gonadotropin (β-hCG) test and must not be breastfeeding.
  • AddedWOCBP must agree to use a highly effective method of contraception
  • Editedthey are neurologically and radiologically stable (no evidence of progression by imaging; same imaging modality [magnetic resonance imaging (MRI) or computed tomography (CT) scan] must be used for each assessment) for at least 28 days prior to the first dose of 177Lu-RAD204imRAD204,
  • Editeddo not require steroids to treat associated neurological symptoms, and • have no history of leptomeningeal disease or spinal cord compression.
  • Removedhave no history of leptomeningeal disease or spinal cord compression.
  • RemovedFor Phase I:
  • EditedParticipants must have positive lesion(s) identified by 177Lu-RAD204imRAD204 imaging dose SPECT/CT per central review as described in Image Review Charter, and.
  • RemovedParticipants without any positive lesion by 177Lu-RAD204im SPECT/CT, e.g. due to poor image quality, may be allowed to enrol on a case-by-case basis at the discretion of the Principal Investigator and in discussion with study Sponsor, provided the participant's tumour is known to express PD-L1.
Exclusion criteria
  • ChangedBefore Any other known, active malignancy, except for treated cervical intraepithelial neoplasia or non-melanoma skin cancer. Patients with a history of malignancies of low recurrence potential who have received curative-intent therapy may be approved on a case-by-case basis in discussion with study Sponsor, if it is determined not to put the patient at an increased risk of adverse drug effects and/or interfere with the integrity of study outcome.Now Any other known, active malignancy, except for treated cervical intraepithelial neoplasia or non-melanoma skin cancer.
  • EditedHave any medical condition that would, in the Investigator's judgment, prevent the participant's full participation in the clinical study due to safety concerns or compliance with clinical study procedures such as participants with severe claustrophobia who are unresponsive to oral anxiolytics, participants with low back pain who cannot lie comfortably on an imaging table, participants who are hyperactive or hyperkinetic such that they cannot tolerate lying still for multiple time point imaging procedures, etc.
  • EditedResidual toxicity ≥ Grade 2 from prior anti-cancer therapy (except alopecia). Patients with Grade 2 or higher toxicity due to prior treatment may be allowed on a case-by-case basis in discussion with the study Sponsor.
  • EditedHistory of uncontrolled allergic reactions and/or known or expected hypersensitivity to protein therapeutics, 177Lu-RAD204 or any of its excipients.
  • EditedPlatelet count of < 80100 × 109/L
  • EditedClinically significant cardiovascular disease including but not limited to:
  • RemovedUnstable angina
  • RemovedAcute myocardial infarction within 6 months prior to screening
  • RemovedNew York Heart Association (NYHA) Class II or greater congestive heart failure (see Section 20.6)
  • RemovedClinically significant abnormalities in rhythm, conduction or morphology on resting ECG (e.g. complete left bundle branch block, third degree heart block)
  • RemovedUncontrolled hypertension
  • RemovedKnown LVEF < 50%
  • RemovedQT interval corrected for heart rate using Fridericia's formula (QTcF) > 470 msec for females and QTcF > 450 msec for males on screening electrocardiogram (ECG) or congenital long QT syndrome.
  • EditedParticipation in any other investigational trial at the time of informed consent signature.
  • RemovedThe following exclusion criteria applies to participants in Phase I:
  • EditedReceived anti-cancer therapy, including chemotherapy, immunotherapy, radiation therapy, biologic, herbal therapy, or any investigational therapy or investigational device, within 28 days (or 5 half-lives for biologic/non-cytotoxic agents, whichever is shorter), prior to the first dose of 177Lu-RAD204tr.
  • RemovedNOTE: endocrine immune-mediated AEs that are controlled with replacement therapy are allowed.
  • EditedHas had or is scheduled to have major surgery < 28 days prior to the first dose of 177Lu-RAD204tr.Surgical procedures not considered to put participants at higher risk of AEs and/or interfere with the integrity of study outcome may be allowed on a case-by-case basis in discussion with the Sponsor.
  • ChangedBefore Active or chronic hepatitis B or C. Chronic hepatitis B or hepatitis C with undetectable viral loads on stable suppression therapy may be allowed on a case-by-case basis in discussion with study Sponsor.Now Active or chronic hepatitis B or C.
  • EditedAny uncontrolled intercurrent illness or clinically significant uncontrolled condition(s), including but not limited to active bacterial, fungal, or viral infections requiring systemic therapy.
Nov 2, 2026
Primary outcomes
2 edited, 4 removed
What changed in the outcomes
  • EditedPharmacokineticsSafety and tolerability of 177Lu-RAD204imRAD204Time frame: 72 hours → 6 weeks
  • EditedRecommended dose(s) of 177Lu-RAD204trRAD204 for future explorationTime frame: 6 weeks
  • RemovedTime Activity Curves (TACs)Time frame: 72 hours
  • RemovedRadiation dosimetry of Lu177-RAD204imTime frame: 72 hours
  • RemovedBiokinetics of 177Lu-RAD204imTime frame: 72 hours
  • RemovedSafety and tolerability of 177Lu-RAD204trTime frame: 6 weeks
Nov 2, 2026
Secondary outcomes
1 edited, 1 added, 4 removed
What changed in the outcomes
  • EditedRadiation dosimetry of 177Lu-RAD204trRAD204Time frame: 72 hours → 6 weeks
  • AddedRadiation dosimetry of different doses of unlabeled RAD204 on the biodistribution of 177LuRAD204Time frame: 6 weeks
  • RemovedSafety and tolerability of a single dose of 177Lu-RAD204imTime frame: 6 weeks
  • RemovedRecommended dose(s) of 177Lu-RAD204im for future explorationTime frame: 2 weeks
  • Removedother outcomeLevel of agreement between 177Lu-RAD204im and standard of care imagingTime frame: Up to 30 weeks
  • Removedother outcomeEffect of 177Lu-RAD204im and 177Lu-RAD204tr on tumor markersTime frame: Up to 30 weeks
Nov 2, 2026
Site contacts
Changed at 1 site. See the sites
Show the site
  • Cancer Research SA (CRSA) · Adelaide, AustraliaContact removed v•••@crsa.au
Nov 2, 2026
Show all 1 update
  1. Nov 2, 2026
    1 site added. Cancer Research SA (CRSA) is now Completed
    Show site
    • Gosford Hospital · Gosford, Australia
    Eligibility 5 inclusion criteria edited, 2 added, 8 removed; 11 exclusion criteria edited, 9 removed
    What changed in the criteria
    Inclusion criteria
    • RemovedWilling and able to provide informed consent prior to start of any study procedures and assessments and must be willing to comply with all study procedures.
    • EditedParticipants with a documented history of histopathologically confirmed relapsed/refractory locally advanced, inoperable or metastatic NSCLC, SCLC, TNBC, cutaneous melanoma, HNSCC, endometrial cancer or any cancer that is known to be MMR deficient or MSI high with documented disease progression during or after their most recent line of anticancer therapy. Participants must be refractory to or have refused standard of care therapy (including PD-1/PD-L1 inhibitors) or have refused or have no standard of care therapy available that is likely to provide clinical benefit.
    • EditedIf the participant tumour's PD-L1 expression status is unknown, PD-L1 positivity maywill be determined in a pre-screening step whereby the participant may be approached to provide written informed consent to have their tumour tissue undergoby IHC testing as determined byusing a validated test (tumour tissue maycan be obtained from archived samples or from a freshly obtained biopsy).
    • RemovedAny number of prior treatment lines are allowed.
    • RemovedWomen of childbearing potential (WOCBP) must have a negative beta-human chorionic gonadotropin (β-hCG) test and must not be breastfeeding. WOCBP are defined as those who are not surgically sterile or post-menopausal. Female participants will be considered post-menopausal if they have been amenorrheic for 12 months without an alternative medical cause. Female participants < 50 years old who meet the criteria for post-menopausal status without previous surgical sterilisation should be considered for further investigation with luteinising hormone (LH) and follicle stimulating hormone (FSH) levels to confirm serological post-menopausal status.
    • RemovedWOCBP must agree to use a highly effective method of contraception during the study and for 14 days after the last injection of 177Lu-RAD204im and/or 6 months after the last dose of 177Lu-RAD204tr, whichever occurs later. Acceptable methods of contraception are described in Section 13.3 of the Protocol.
    • RemovedMale participants who are able to father a child must agree to avoid impregnating a partner and to adhere to a highly effective method of contraception during the study and for 14 days after the last injection of 177Lu-RAD204im and/or 6 months after the last dose of 177Lu-RAD204tr, whichever occurs later. All male participants must agree to not donate sperm during the study and for 14 days after the last injection of 177Lu-RAD204im and/or 6 months after the last dose of Lu-RAD204tr, whichever occurs later. Acceptable methods of contraception are described in Section 13.3 of the Protocol.
    • AddedWomen of childbearing potential (WOCBP) must have a negative beta-human chorionic gonadotropin (β-hCG) test and must not be breastfeeding.
    • AddedWOCBP must agree to use a highly effective method of contraception
    • Editedthey are neurologically and radiologically stable (no evidence of progression by imaging; same imaging modality [magnetic resonance imaging (MRI) or computed tomography (CT) scan] must be used for each assessment) for at least 28 days prior to the first dose of 177Lu-RAD204imRAD204,
    • Editeddo not require steroids to treat associated neurological symptoms, and • have no history of leptomeningeal disease or spinal cord compression.
    • Removedhave no history of leptomeningeal disease or spinal cord compression.
    • RemovedFor Phase I:
    • EditedParticipants must have positive lesion(s) identified by 177Lu-RAD204imRAD204 imaging dose SPECT/CT per central review as described in Image Review Charter, and.
    • RemovedParticipants without any positive lesion by 177Lu-RAD204im SPECT/CT, e.g. due to poor image quality, may be allowed to enrol on a case-by-case basis at the discretion of the Principal Investigator and in discussion with study Sponsor, provided the participant's tumour is known to express PD-L1.
    Exclusion criteria
    • ChangedBefore Any other known, active malignancy, except for treated cervical intraepithelial neoplasia or non-melanoma skin cancer. Patients with a history of malignancies of low recurrence potential who have received curative-intent therapy may be approved on a case-by-case basis in discussion with study Sponsor, if it is determined not to put the patient at an increased risk of adverse drug effects and/or interfere with the integrity of study outcome.Now Any other known, active malignancy, except for treated cervical intraepithelial neoplasia or non-melanoma skin cancer.
    • EditedHave any medical condition that would, in the Investigator's judgment, prevent the participant's full participation in the clinical study due to safety concerns or compliance with clinical study procedures such as participants with severe claustrophobia who are unresponsive to oral anxiolytics, participants with low back pain who cannot lie comfortably on an imaging table, participants who are hyperactive or hyperkinetic such that they cannot tolerate lying still for multiple time point imaging procedures, etc.
    • EditedResidual toxicity ≥ Grade 2 from prior anti-cancer therapy (except alopecia). Patients with Grade 2 or higher toxicity due to prior treatment may be allowed on a case-by-case basis in discussion with the study Sponsor.
    • EditedHistory of uncontrolled allergic reactions and/or known or expected hypersensitivity to protein therapeutics, 177Lu-RAD204 or any of its excipients.
    • EditedPlatelet count of < 80100 × 109/L
    • EditedClinically significant cardiovascular disease including but not limited to:
    • RemovedUnstable angina
    • RemovedAcute myocardial infarction within 6 months prior to screening
    • RemovedNew York Heart Association (NYHA) Class II or greater congestive heart failure (see Section 20.6)
    • RemovedClinically significant abnormalities in rhythm, conduction or morphology on resting ECG (e.g. complete left bundle branch block, third degree heart block)
    • RemovedUncontrolled hypertension
    • RemovedKnown LVEF < 50%
    • RemovedQT interval corrected for heart rate using Fridericia's formula (QTcF) > 470 msec for females and QTcF > 450 msec for males on screening electrocardiogram (ECG) or congenital long QT syndrome.
    • EditedParticipation in any other investigational trial at the time of informed consent signature.
    • RemovedThe following exclusion criteria applies to participants in Phase I:
    • EditedReceived anti-cancer therapy, including chemotherapy, immunotherapy, radiation therapy, biologic, herbal therapy, or any investigational therapy or investigational device, within 28 days (or 5 half-lives for biologic/non-cytotoxic agents, whichever is shorter), prior to the first dose of 177Lu-RAD204tr.
    • RemovedNOTE: endocrine immune-mediated AEs that are controlled with replacement therapy are allowed.
    • EditedHas had or is scheduled to have major surgery < 28 days prior to the first dose of 177Lu-RAD204tr.Surgical procedures not considered to put participants at higher risk of AEs and/or interfere with the integrity of study outcome may be allowed on a case-by-case basis in discussion with the Sponsor.
    • ChangedBefore Active or chronic hepatitis B or C. Chronic hepatitis B or hepatitis C with undetectable viral loads on stable suppression therapy may be allowed on a case-by-case basis in discussion with study Sponsor.Now Active or chronic hepatitis B or C.
    • EditedAny uncontrolled intercurrent illness or clinically significant uncontrolled condition(s), including but not limited to active bacterial, fungal, or viral infections requiring systemic therapy.
    Primary outcomes 2 edited, 4 removed
    What changed in the outcomes
    • EditedPharmacokineticsSafety and tolerability of 177Lu-RAD204imRAD204Time frame: 72 hours → 6 weeks
    • EditedRecommended dose(s) of 177Lu-RAD204trRAD204 for future explorationTime frame: 6 weeks
    • RemovedTime Activity Curves (TACs)Time frame: 72 hours
    • RemovedRadiation dosimetry of Lu177-RAD204imTime frame: 72 hours
    • RemovedBiokinetics of 177Lu-RAD204imTime frame: 72 hours
    • RemovedSafety and tolerability of 177Lu-RAD204trTime frame: 6 weeks
    Secondary outcomes 1 edited, 1 added, 4 removed
    What changed in the outcomes
    • EditedRadiation dosimetry of 177Lu-RAD204trRAD204Time frame: 72 hours → 6 weeks
    • AddedRadiation dosimetry of different doses of unlabeled RAD204 on the biodistribution of 177LuRAD204Time frame: 6 weeks
    • RemovedSafety and tolerability of a single dose of 177Lu-RAD204imTime frame: 6 weeks
    • RemovedRecommended dose(s) of 177Lu-RAD204im for future explorationTime frame: 2 weeks
    • Removedother outcomeLevel of agreement between 177Lu-RAD204im and standard of care imagingTime frame: Up to 30 weeks
    • Removedother outcomeEffect of 177Lu-RAD204im and 177Lu-RAD204tr on tumor markersTime frame: Up to 30 weeks
    Site contacts Changed at 1 site. See the sites
    Show the site
    • Cancer Research SA (CRSA) · Adelaide, AustraliaContact removed v•••@crsa.au
    + 3 other changes: verification date, description and arm descriptions

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 ↗

10

Registry details

Key details

Study ID
NCT06305962
Lead sponsor
Radiopharm Theranostics, Ltd
Responsible party
Sponsor
First posted
Mar 12, 2024
Start date
Jun 3, 2024
Primary completion
Dec 2027 (estimated)
Completion
Dec 2027 (estimated)
Last update
Nov 2, 2026

Study contacts

Dimitris Voliotis, MD
Contact
dv@radiopharmtheranostics.com
+1 646 535 5017

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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