Radioactive drug and scan agent in adults with advanced solid tumors
Tests two radioactive agents in adults with advanced breast, lung, stomach or bladder cancer.
Plain-language title generated from the registry record
Registry title: Study of [177Lu]Lu-DWJ155 and [68Ga]Ga-DWJ155 in Patients With Solid Tumors
Key facts
- Where
- Kashiwa, JapanSee the site
- Phase
- Phase 1
AI summary: who the study is looking for
From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.
The trial is looking for adults with advanced breast cancer, non-small cell lung cancer, gastric/gastroesophageal junction cancer or bladder cancer whose disease got worse after earlier treatment.
- Age
- 18 years or older
- Sex
- All sexes can join
- Disease stage
- Advanced cancer with measurable disease (RECIST version 1.1). Breast cancer (HER2+, HR+/HER2-low, and in the expansion part also HR+/HER2 0, HR-/HER2-low, HR-/HER2 0), non-small cell lung cancer (with or without actionable gene changes), gastric/GEJ cancer with HER2 IHC 3+ or 2+, or bladder cancer. Disease must have progressed on or not been tolerated with standard treatment.
- Earlier treatment
- Must have had earlier treatment for advanced disease. HER2+ breast cancer: at least two earlier lines of systemic therapy. Cannot have had any therapeutic radiopharmaceutical before.
- Biomarker or test result
- Breast cancer by HER2 and hormone receptor (HR) status; lung cancer with or without actionable gene changes (AGAs); gastric/GEJ cancer with HER2 IHC 3+ or 2+ (ISH positive or negative).
Main reasons for not taking part
- Kidney, liver or blood test results outside the set limits
- Serious heart disease or serious uncontrolled infection
- Urinary tract blockage or urinary incontinence that cannot be managed
- Pregnant or breastfeeding women
- Radiation therapy within the set time before the imaging agent
Read by machine on 13 November 2026.
Where in Japan
- Kashiwa, ChibaHospital not named in the registryContact: Novartis PharmaceuticalsTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorTrial details
- Who runs it
- Novartis Pharmaceuticals
- Trial code
- NCT07660055
- Record updated
- 3 November 2026
- Original description
The purpose of this phase I study is to evaluate the safety, tolerability, dosimetry, and preliminary anti-tumor activity of [177Lu]Lu-DWJ155 and the safety and imaging properties of [68Ga]Ga-DWJ155 in patients with histologically or cytologically confirmed advanced HER2+, HR+/HER2-negative, or triple negative breast cancer (TNBC), non-small cell lung cancer (NSCLC), HER2-3+ or 2+ (ISH positive or negative) gastric/gastroesophageal junction (GEJ) cancer, and bladder cancer.Read full original descriptionShow less
A Phase I Open-label, Multi-center Study to Evaluate the Safety, Tolerability, Dosimetry, and Preliminary Activity of [177Lu]Lu-DWJ155 and Safety and Imaging Properties of [68Ga]Ga-DWJ155 in Patients With Solid Tumors
The purpose of this phase I study is to evaluate the safety, tolerability, dosimetry, and preliminary anti-tumor activity of [177Lu]Lu-DWJ155 and the safety and imaging properties of [68Ga]Ga-DWJ155 in patients with histologically or cytologically confirmed advanced HER2+, HR+/HER2-negative, or triple negative breast cancer (TNBC), non-small cell lung cancer (NSCLC), HER2-3+ or 2+ (ISH positive or negative) gastric/gastroesophageal junction (GEJ) cancer, and bladder cancer.
Inclusion: Male or female patients age ≥ 18 years; Patients with one of the following histologically or cytologically confirmed and documented malignancies who have progressed on or been intolerant to standard of care therapy, and are not considered appropriate for any standard therapy with proven benefit, in the investigator's judgment:; Dose Escalation:; Advanced HER2+ breast cancer with disease progression after at least two prior lines of systemic therapy in the advanced setting; Advanced HR+/HER2-low breast cancer with disease progression after prior therapy in the advanced setting; Advanced NSCLC without actionable genetic alterations (AGAs) with disease progression after prior therapy in the advanced setting; Advanced NSCLC with AGAs who have received prior treatment; Measurable disease as determined by RECIST version 1.1; Dose Expansion:; Advanced HER2+ breast cancer with disease progression after at least two prior lines of systemic therapy in the advanced setting; Advanced HR+/HER2-low breast cancer with disease progression after prior therapy in the advanced setting; Advanced HR+/HER2 0 breast cancer with disease progression after prior therapy in the advanced setting; Advanced HR-/HER2-low breast cancer with disease progression after prior therapy in the advanced setting; Advanced HR-/HER2 0 breast cancer with disease progression after prior therapy in the advanced setting; Advanced NSCLC with AGAs, who have received prior treatment; Advanced NSCLC without known AGAs who have received prior treatment; Advanced gastric/GEJ cancer with HER2 IHC 3+ or 2+ (ISH + or -), following disease progression after prior therapy in the advanced setting; Advanced bladder cancer following disease progression after prior therapy in the advanced setting; Measurable disease as determined by RECIST version 1.1.
Exclusion: Initiation of hematopoietic colony stimulating factors, thrombopoietin mimetics, or erythroid stimulating agents initiated ≤ 2 weeks prior to imaging agent administration; Use of transfusion support ≤4 weeks prior to imaging agent administration; Treatment with any of the following anti-cancer therapies prior to imaging agent administration within the stated timeframes:; Prior treatment with any therapeutic radiopharmaceutical; < 10 half-lives for any imaging radiopharmaceutical; ≤ 4 weeks for external beam radiation therapy (EBRT) or brachytherapy; ≤ 6 months for lung-directed external beam radiotherapy; Impaired cardiac function or clinically significant cardiac disease; Any serious uncontrolled infection (acute or chronic); Out-of-range laboratory values defined as:; Creatinine clearance < 60 mL/min (calculated using CKD-EPI 2021 formula, or measured); Total bilirubin > 1.5 x ULN (except for patients with Gilbert's syndrome who are excluded if total bilirubin >3.0 x ULN) or direct bilirubin > 1.5 x ULN; Alanine aminotransferase (ALT) > 3 x ULN, except for patients with tumor involvement of the liver who are excluded if ALT > 5 x ULN; Aspartate aminotransferase (AST) > 3 x ULN, except for patients with tumor involvement of the liver who are excluded if AST > 5 x ULN; Lipase > 1.5 x ULN; Absolute neutrophil count (ANC) < 1.5 x 109/L; Hemoglobin < 9 g/dL; Platelet count < 100 x 109/L; Unmanageable urinary tract obstruction or urinary incontinence; Pregnant or breastfeeding women; Patients with non-tumor uptake of [68Ga]Ga-DWJ155 in tissues or organs that, in the opinion of the investigator, increases the risk associated with [177Lu]Lu-DWJ155 treatment; Other protocol-defined inclusion/exclusion criteria may apply.