Muscle Invasive Bladder Urothelial CarcinomaNCT07726602
Tumor-informed ctDNA in Muscle-invasive Bladder Cancer for Evaluation of Residual/Recurrent Disease - the TiMBER Trial
An observational study of Muscle Invasive Bladder Urothelial Carcinoma and Stage II Bladder Cancer AJCC v8, run by OHSU Knight Cancer Institute at 1 site in United States.
Trial summary
This study investigates the feasibility of the Labcorp Plasma Detect, which is an assay (test) that looks for circulating tumor DNA (ctDNA) in patients who have muscle-invasive (MI) urothelial carcinoma (also known as MI bladder cancer, MIBC). Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Muscle Invasive Bladder Urothelial Carcinoma, Stage II Bladder Cancer AJCC v8, Stage IIIA Bladder Cancer AJCC v8
- What is being tested?
- Non-Interventional Study
- How many people
- 100 participants
- Where
- 1 siteUnited States
- Study dates
- 29 Jun 2026to 31 Jan 2027
- Phase
- Observational
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
Study population: Patients with muscle invasive bladder urothelial cancer approved for either systemic NAT followed by RC or CRT.
Who may be able to join
- Ability to understand and willingness to provide written informed consent
- Age ≥ 18 yr at the time of consent. Eligibility is limited to adults since MIBC is not prevalent in persons under the age of 18 yr. Persons of all genders, gender identities, races, and ethnicity will be included
- New diagnosis of histologically confirmed muscle-invasive UC (TNM classification (UICC/AJCC 8th edition) of cT2-4aN0-2M0 at pathological examination and approved for either (1) systemic NAT followed by RC or (2) CRT
- Plan for treatment of MIBC with curative intent with one of the three SOC treatments as listed above
- Surgical resection, if planned, must include removal of the bladder and bilateral pelvic lymph node dissection if not already included
- Radiation therapy, if planned, must include transurethral resection of bladder tumor, followed by image guided radiotherapy plus sensitizing chemotherapy
- Representative FFPE tumor specimens from biopsy at diagnosis (including TURBT) in paraffin blocks (blocks preferred) or at least 10 unstained and 1 H\&E slides. Biopsied tumor specimen quality must have been verified by local pathology review. Fine-needle aspiration, brushing, cell pellet from pleural effusion, and lavage samples are not acceptable. For core-needle biopsy specimens, at least three cores should be submitted for evaluation
- For participants who have partners of childbearing potential: Partner and/or participant must not be planning to conceive and must follow guidelines and recommendations per the SOC for their various therapeutic interventions
Who cannot join
- Ongoing treatment with an approved or investigational anti-cancer therapy for a cancer that is distinct from UC. Hormone-replacement therapy or oral contraceptives are allowed. Ongoing systemic therapy for bladder cancer will not be exclusionary, but enrollment of this population will be limited
- Previous or concurrent cancer that is distinct from the cancer under investigation in primary site or histology, except treated cutaneous basal cell carcinoma or squamous cell carcinoma, low or intermediate risk prostate cancer under active surveillance, myeloproliferative disorders or indolent hematologic malignancies that do not require active systemic therapy, and small renal masses under active surveillance. Any cancer curatively treated >two years prior to the first treatment for bladder cancer is permitted
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United States1 site, 1 recruiting
- Recruiting
OHSU Knight Cancer Institute
Portland, Oregon, 97239
OHSU Knight Cancer Institue Clinical Trials Information, 503-494-1080, trials@ohsu.edu
Jen-Jane Liu
About this study
This study investigates the feasibility of the Labcorp Plasma Detect, which is an assay (test) that looks for circulating tumor DNA (ctDNA) in patients who have muscle-invasive (MI) urothelial carcinoma (also known as MI bladder cancer, MIBC). During this study, tissue, blood and urine samples will also be analyzed to help the study team better understand this type of cancer and a patient's response to treatment.
Read the detailed description
PRIMARY OBJECTIVE:
- Evaluate the correspondence of cancer recurrence and ctDNA positivity.
OUTLINE: This is an observational study. Patients will undergo prospective sample collection of blood, tissue, and urine to assess levels of tumor DNA based on whole genome sequencing of their cancer. Their medical records will be reviewed on study to see whether levels of ctDNA correlate with disease response to treatment or recurrence.
- Conditions
- Muscle Invasive Bladder Urothelial Carcinoma, Stage II Bladder Cancer AJCC v8, Stage IIIA Bladder Cancer AJCC v8
- Being tested
- Non-Interventional Study
- Medical subject headings
- Urinary Bladder Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Non-Interventional StudyOther
Also called Non-Interventional Observational Study, Noninterventional (Observational) Study
Non-interventional study
| Study group | Role | What they receive |
|---|---|---|
| Observational | Patients undergo blood, tissue, and urine sample collection and have their medical records reviewed on study. Receives: Other: Non-Interventional Study |
What is being measured
The primary outcome is the main question the study is designed to answer.
Concordance between a recurrence and ctDNA status
Will assess the concordance between a recurrence (assigned using SOC methods) and ctDNA status post definitive treatment among participants who have demonstrated cancer recurrence. Concordance will be evaluated using a time-dependent C index and diagnostic accuracy will be reported with sensitivity, specificity, PPV, and NPV.
Measured: Up to study completion. Up to 5 years with the continuation of Years 4-5 study activities based on the results of the Year 3 interim review
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted24 Jul 2026
- Study start29 Jun 2026
- Primary completion31 Jan 2027 (estimated)
- Study completion31 Jan 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Muscle Invasive Bladder Urothelial CarcinomaStudies of the same condition, open and under way.
- 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
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 100 participants (estimated)
Sponsor and investigators
- Lead sponsor
- OHSU Knight Cancer Institute
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Jen-Jane Liu, M.D., OHSU Knight Cancer Institute
- Investigators
- Jen-Jane Liu, Principal investigator, OHSU Knight Cancer Institute
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07726602
- Sponsor's protocol ID
- STUDY00028122
- Other IDs
- NCI-2026-04082, STUDY00028122
- Status last verified
- Aug 2026
- First submitted
- 5 Jul 2026
- Last updated
- 14 Aug 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No