ClinicalTrials.gg
RecruitingNCT07673341Updated Oct 20, 2026

[18F]FTT Positron Emission Tomography/Computed Tomography to Predict Treatment Response in Patients Scheduled to Receive Gemcitabine, Cisplatin, and Durvalumab for Newly Diagnosed Cholangiocarcinoma

A Phase 2 interventional study of Computed Tomography and Fluorine F 18 Fluorthanatrace in Cholangiocarcinoma, sponsored by University of Washington. Recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-20.

Sponsored by University of Washington · Phase 2, Interventional, and Diagnostic

From the registry’s dates

  • Started Oct 2026; still recruiting 1 month later.
Updated Oct 20, 2026Now RecruitingStart date moved+1 moreGo to Updates ↓
Phase
Phase 2
Study type
Interventional
Enrollment
22
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 327 studies in Cholangiocarcinoma with a site in United States — 71 open to participants now, 110 under way, 7 of them phase 3. Cholangiocarcinoma · United States.

Planned enrollment
192nd of 278
22 · median 44
Started
2026
with 18 others
Phase 2
93 of 327
19 open now
Primary completion
2028-07
later than 73 of 109 live
Registered
321st of 327
by date

Among the 327 studies in Cholangiocarcinoma with a site in United States, this one is the 192nd largest by planned enrollment of the 278 interventional ones that give a count, is one of 19 that started in 2026, is one of 93 in phase 2, reaches primary completion later than 73 of the 109 other live ones, and was the 321st registered.

Cholangiocarcinoma

824 studies on the registry are indexed under Cholangiocarcinoma; 287 are open to participants now.

Browse Cholangiocarcinoma studies →

Open to participants now

71 of the 327 studies in Cholangiocarcinoma with a site in United States are open now. Recruiting first, the newest first:

65 more — sign in →

All 71 open studies →

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 →

Who these studies take

Of the 211 Cholangiocarcinoma studies recruiting now, 141 (67%) set no upper age limit and 49 (23%) stop at 75 or younger; 10 take children under 18; 14 take healthy volunteers.

This study: 18 Years and older · 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.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 327 studies in Cholangiocarcinoma with a site in United States, or all of them as a file.
02

Study summary

This phase II trial studies whether [18F]FTT can be used with positron emission tomography (PET)/computed tomography (CT) imaging to predict treatment response in patients scheduled to receive gemcitabine, cisplatin, and durvalumab (GCD) for newly diagnosed cholangiocarcinoma. PET/CT is an imaging technique that utilizes PET and CT in a single machine. PET is an established imaging technique that utilizes small amounts of radioactivity attached to very minimal amounts of tracer, in the case of this trial, [18F]FTT, to make detailed, computerized pictures of areas inside the body where the tracer is used. CT utilizes x-rays that traverse body from the outside. CT images provide an exact outline of organs and potential inflammatory tissue where it occurs in the patient's body. [18F]FTT targets and binds to poly (ADP-ribose) polymerase 1 (PARP1). Some cholangiocarcinoma tumor cells may express PARP1 which may make it easier to see them on PET/CT. Research has shown that tumor cells that express PARP1 may not respond well to GCD treatment. Researchers hope that by using [18F]FTT with PET/CT imaging they will be able to detect which patients have tumor cells that express PARP1, which may help predict treatment response in patients scheduled to receive GCD for newly diagnosed cholangiocarcinoma.

Read the detailed description

OUTLINE:

Patients receive [18F]FTT intravenously (IV) and 60, 90, or 150 minutes later undergo PET/CT within 30 days prior to day 1 cycle 1 of GCD and 12 weeks after starting GCD in the absence of unacceptable toxicity. Patients also undergo CT and/or magnetic resonance imaging (MRI) throughout the study.

After completion of study intervention, patients are followed up at week 24 and then up to 6 months after completing GCD treatment.

03

Conditions studied

  • Cholangiocarcinoma

Browse trials for

04

Who can participate

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

  • Patient must have confirmed cholangiocarcinoma
  • Patient must be newly diagnosed and have not yet been treated
  • Patient planned to receive GCD per standard-of-care
  • Patient must have evaluable disease or at least one that can be assessed at baseline by CT (or MRI) per 1.1
  • Age ≥ 18 years
  • For women of , a negative serum pregnancy test is required within 7 days prior to [18F]FTT PET imaging
  • Men and women of need to agree to employ acceptable forms of throughout their participation in the study that meet requirements for GCD treatment per standard of care
  • Patient is willing and able to comply with the protocol for the duration of the study including undergoing all study procedures
  • Ability to understand and the willingness to sign a written document. Informed consent must be provided prior to any study specific procedures

Exclusion criteria

Exclusion Criteria:

  • Pregnant or breastfeeding women
  • Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements
Terms in these criteria, in plain language(7)

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.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

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.

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.

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.

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.

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.

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.

05

Study design

Phase
Phase 2
Primary purpose
Diagnostic
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
22 participants (estimated)

Study arms

  • Experimental
    Diagnostic ([18F]FTT PET/CT)

    Patients receive \[18F\]FTT IV and 60, 90, or 150 minutes later undergo PET/CT within 30 days prior to day 1 cycle 1 of GCD and 12 weeks after starting GCD in the absence of unacceptable toxicity. Patients also undergo CT and/or MRI throughout the study.

    Procedure: Computed Tomography · Radiation: Fluorine F 18 Fluorthanatrace · Procedure: Magnetic Resonance Imaging · Procedure: Positron Emission Tomography

Interventions

  • ProcedureComputed Tomography

    Undergo PET/CT and/or CT

    Also known as: CAT, CAT Scan, Computed Axial Tomography, Computerized Axial Tomography, Computerized axial tomography (procedure), Computerized Tomography, Computerized Tomography (CT) scan, CT, CT Scan, Diagnostic CAT Scan, Diagnostic CAT Scan Service Type, tomography

  • RadiationFluorine F 18 Fluorthanatrace

    Given IV

    Also known as: [18F]FluorThanatrace, [18F]FTT, FLUORTHANATRACE F-18

  • ProcedureMagnetic Resonance Imaging

    Undergo MRI

    Also known as: Magnetic Resonance, Magnetic Resonance Imaging (MRI), Magnetic resonance imaging (procedure), Magnetic Resonance Imaging Scan, Medical Imaging, Magnetic Resonance / Nuclear Magnetic Resonance, MR, MR Imaging, MRI, MRI Scan, MRIs, NMR Imaging, NMRI, Nuclear Magnetic Resonance Imaging, sMRI, Structural MRI

  • ProcedurePositron Emission Tomography

    Undergo PET/CT

    Also known as: Medical Imaging, Positron Emission Tomography, PET, PET Scan, Positron emission tomography (procedure), Positron Emission Tomography Scan, Positron-Emission Tomography, PT

This study also gives Durvalumab. No intervention listed here names it: that was found by reading the record.

06

What researchers measure

Primary outcomes

  1. Relationship between standardized uptake value maximum (SUVmax) and overall response rate

    Baseline SUVmax will be extracted from a region of interest (ROI) placed on the tumor lesion of interest using a 40% threshold. Will assess overall response rate at 24 ± 2 weeks after starting GCD by using Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 criteria. Response will be analyzed as a binary outcome. Differences in baseline SUVmax between responders and non-responders will be evaluated using the Wilcoxon rank-sum test. Logistic regression models will be used to estimate the direction and magnitude of association, with response as the dependent variable and SUVmax as the predictor. Odds ratios and 95% confidence intervals will be reported. Analysis will focus on estimation of effect sizes and the direction and magnitude of associations of the primary endpoints, overall response rate and SUVmax of the most avid lesion, rather than formal hypothesis testing alone. Boxplots will be used to visualize the distribution of SUVmax by responders group.

    Time frame: At baseline and 24 weeks after starting gemcitabine, cisplatin, and durvalumab (GCD)

Secondary outcomes

  1. Relationship between standardized uptake value mean (SUVmean) and overall response rate

    Will measure baseline SUVmean from an ROI placed on the tumor lesion of interest using a 40% threshold. Treatment response will be defined by RECIST 1.1 criteria at 24 ± 2 weeks following GCD treatment. Association between baseline SUVmean and treatment response will be evaluated using Wilcoxon rank-sum test. Logistic regression will be used to quantify the magnitude and direction of association between baseline SUVmean and response. Results will be summarized using odds ratios with 95% confidence intervals, and boxplot to illustrate the distribution of baseline SUVmean between responders and non-responders.

    Time frame: At baseline and 24 weeks after starting GCD

  2. Change in SUVmax and response

    Will calculate the change of SUVmax from baseline to 12 ± 2 weeks after starting GCD. Due to the limited sample size, will use the nonparametric method Wilcoxon Rank Sum test to evaluate the difference in change between responders and non-responders. Effect sizes will be summarized using the median difference (Hodges-Lehmann estimator) in change between groups with 95% confidence intervals.

    Time frame: Baseline to 12 weeks after starting GCD

  3. Change in SUVmean and response

    Will calculate the change of SUVmean from baseline to 12 ± 2 weeks after starting GCD. Due to the limited sample size, will use the nonparametric method Wilcoxon Rank Sum test to evaluate the difference in change between responders and non-responders. Effect sizes will be summarized using the median difference (Hodges-Lehmann estimator) in change between groups with 95% confidence intervals.

    Time frame: Baseline to 12 weeks after starting GCD

07

Study locations

1 of 1 sites recruiting
  • Fred Hutch/University of Washington Cancer Consortium
    Seattle, Washington 98109, United States
    Recruiting
    • Angela Castellanos Rodriguez, MD, MSc · Contactacastell@uw.edu · 206-606-6777
    • Angela Castellanos Rodriguez, MD, MSc · Principal investigator
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

2 registry updates since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedDate before it movedWhere the date was before it movedSimilar 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 Oct 2026 (actual). Primary completion is estimated for Jul 2028, 20 months after the start.

Of 147 non-industry phase 2 interventional studies under Cholangiocarcinoma, half reached primary completion within 46 months of starting (the median), counting those still running; a quarter within 30 and three quarters within 65. This study's planned 20 months is below that.

Counting every sponsor, half of 173 studies reached it within 46 months; a quarter within 29 and three quarters within 65.

Start moved once since we started tracking on Sep 25, 2026: Nov 2026 → Oct 2026, on Oct 20, 2026.

Earlier changes are on the record history on ClinicalTrials.gov ↗

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

Registered
Jun 22, 2026
First posted
Jun 29, 2026
StartActual
Oct 8, 2026was Nov 2026
Primary completionEst.
Jul 1, 2028
CompletionEst.
Dec 31, 2028
Last update
Oct 20, 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.
Status
Not yet recruiting→Recruiting
changed Sep 25, 2026
Sites
Fred Hutch/University of Washington Cancer Consortium is now Recruiting
Sep 25, 2026
Start date
Nov 1, 2026→Oct 8, 2026 (actual)
Oct 20, 2026
Show all 2 updates
  1. Oct 20, 2026
    Start date Nov 1, 2026→Oct 8, 2026 (now actual)
  2. Sep 25, 2026
    Not yet recruiting→Recruiting
    Fred Hutch/University of Washington Cancer Consortium is now Recruiting

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
NCT07673341
Responsible party
Sponsor
First posted
Jun 29, 2026
Start date
Oct 8, 2026
Primary completion
Jul 1, 2028 (estimated)
Completion
Dec 31, 2028 (estimated)
Last update
Oct 20, 2026

Study contacts

Angela Castellanos Rodriguez, MD, MSc
Contact
acastell@uw.edu
206-606-6777
Angela Castellanos Rodriguez, MD, MSc
principal investigator · Fred Hutch/University of Washington Cancer Consortium

Oversight

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

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