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Prostate CancerNCT04340765

18F-fluorocholine and 18F-fluoride PET in Prostate Cancer

A study testing 18F-fluorocholine in people with Prostate Cancer and Fluorocholine, run by Buddhist Tzu Chi General Hospital at 1 site in Taiwan.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Prostate cancer remains to be a public health problem around the world. For patients with prostate cancer, diphosphonate bone scintigraphy (BS) and pelvic tomographic imaging are major imaging tools to evaluate the disease spread. Read more about this study

Who is it for?
Ages 20 years and older, men only
Conditions the study is for
Prostate Cancer, Fluorocholine
What is being tested?
18F-fluorocholine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
36 participants
Where
1 siteTaiwan
Study dates
1 Feb 2018to 31 Dec 2019
Phase
Interventional
Are there results?
None posted in the registry

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 20 years and older
  • Men only
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patients are pathologically diagnosed with prostate adenocarcinoma.
  • Received NaF PET/CT.

Who cannot join

  • Diagnosed to have multiple cancers
  • Younger than 20-year-old
  • Known allergic to investigational drug
  • The patients is classified as not suited for the exam by the investigators.

Trial locations and contacts

1 site in 1 country.

Taiwan1 site
  • Hualien Tzu Chi Hospital

    Hualien City, 970

Other trials in Taiwan

About this study

Official title: Comparative Evaluation of Metastatic Lesions From Prostate Carcinoma With 18F-NaF and 18F-Fluorocholine PET/CT

Prostate cancer remains to be a public health problem around the world. For patients with prostate cancer, diphosphonate bone scintigraphy (BS) and pelvic tomographic imaging are major imaging tools to evaluate the disease spread. However, the conventional image modalities have only limited sensitivity and specificity. New imaging tracer with 18F-fluorocholine (18F-FCH) and old radiopharmaceuticals with NaF has showed promising results in detecting prostate cancers over bone scan. Nevertheless, the diagnostic performance of each tool has less been compared.

The goal of this study is to compare the diagnostic performance of 18F-FCH PET/CT and NaF PET/CT for prostate cancer patients.

The investigators prospectively enroll patients with the pathological diagnosis of prostate cancer and intended to receive radionuclide bone image. The patients will receive NaF PET/CT and 18F-FCH PET/CT. Each image will be evaluated by experienced interpreter for abnormal uptake suspicious for cancer spreading. The reference standard will be a combination of tissue correlation, imaging, laboratory and clinical data. Diagnostic performance of both PET/CT scans will be measured and calculated.

Read the detailed description

The investigators conducted a prospective study to investigate the performance of 18F-choline (FCH) PET/CT and 18F-NaF PET in the patients with prostate adenocarcinoma.

18F-NaF PET imaging protocol: Fasting is not needed before radiotracer injection. No specific drug restriction is needed. Scan will be conduced by using a PET/CT unit (Discovery ST; GE Medical Systems, Milwaukee,Wis), and scans will be interpreted on a work station with the use of compatible software (Xeleris).

An indwelling intravenous catheter connected to an infusion line and an saline syringe will be set on each patient. 18F-NaF (148 +/- 10% MBq) will be injected intravenously through the infusion line and will be flushed by saline. NaF PET/CT scan acquisition is to be taken 30 minutes after radiotracer injection. The PET/CT (120 mA, 120 kVp) scan field will cover from vertex to toe.

Image analysis: Two nuclear medicine physicians assess the NaF PET/CT images. The investigators have access to the patients' history and interpreted individually by each reader, with disagreements to be resolved by consensus. Uptake in the focus will be evaluated of the likelihood of cancer in 5-graded scale. 0. No cancer or definitely no pathologic aspect; 1. Probably benign lesion; 2. Equivocal lesion; 3. Probably cancer; 4. Most probably cancer. For the determination of a diagnosis, score 0 and 1 are considered a negative result and 2 to 4 a positive result.

18F-FCH PET imaging protocol: The 18F-FCH PET will be arranged within 6 weeks after NaF PET. Fasting is not needed before radiotracer injection. No specific drug restriction is needed. Scan will be conduced by using a PET/CT unit (Discovery ST; GE Medical Systems, Milwaukee,Wis), and scans will be interpreted on a work station with the use of compatible software (Xeleris).

An indwelling intravenous catheter connected to an infusion line and an saline syringe will be set on each patient. 18F-FCH (185 +/- 10% MBq) will be injected intravenously through the infusion line and will be flushed by saline. The injected 18F-FCH dose, injection time, post-injection residual activity, time of start imaging and time of end imaging will be recorded on case report form. 18F-FCH PET/CT scan acquisition is to be taken 5 to 10 minutes after radiotracer injection. The PET/CT (80-120 mA, 120 kVp) scan field will cover from skull to mid-thigh. The 18F-FCH PET/CT scan time will require 35-40 minutes.

Image analysis: Two nuclear medicine physicians assess the 18F-FCH PET/CT images. The investigators have access to the patients' history and interpreted individually by each reader, with disagreements to be resolved by consensus. Uptake in the focus will be evaluated of the likelihood of cancer in 5-graded scale. 0. No cancer or definitely no pathologic aspect; 1. Probably benign lesion; 2. Equivocal lesion; 3. Probably cancer; 4. Most probably cancer. For the determination of a diagnosis, score 0 and 1 are considered a negative result and 2 to 4 a positive result.

Reference standard: The skeletal lesion will be evaluated by both 18F-FCH PET/CT and NaF PET/CT findings. Congruent positive lesion and congruent negative will be defined as true positive and true negative, respectively. A third image study (MRI or CT) will be introduced for those with incongruent and ambiguous PET features. Biopsy will be reserved for those lesions with undetermined results after third image study.

The extra-skeletal cancerous lesions are theoretically be detected on 18F-FCH PET/CT only, thus, the reference modality will not include NaF PET/CT. The prostate bed in patients with either positive or negative imaging studies will be investigated with pelvic MRI. Patients with abnormal foci in pelvic and abdominal extraprostatic tissue at imaging will be investigated by using pelvic MRI as well. If lesions on MRI and 18F-FCH PET/CT are both positive, the lesions will be treated as malignancy. Patients with lesions on 18F-FCH PET/CT along will be evaluated by the investigator and co-investigators to decide if the patient will receive biopsy or not. The lesion will be confirmed to be malignant if positive biopsy results. The patient will receive further follow-up by MRI and serum PSA after 6 and 12 months if the patient is not suitable for biopsy. The lesion will be confirmed to be malignant if substantial growth in lesion size or increase serum PSA. Patients with both negative MRI and negative 18F-FCH PET/CT will be evaluated by the aforementioned follow-up schedule as well. If the initial pelvic MRI is positive for malignancy and the 18F-FCH PET/CT is negative, the lesion will be treated as positive for malignancy. However, the patient still need the 6 and 12 months of follow-up to confirm the nature of the lesion. Biopsy will be reserved for those patients with undetermined results despite vigorous image studies.

Being tested
18F-fluorocholine
Keywords
Prostate cancer, NaF, Bone scan, 18F-Fluorocholine, PET
Medical subject headings
Prostatic Neoplasms

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • 18F-fluorocholineDrug

    Also called 18F-NaF

    Dual phase 18F-fluorocholine PET/CT

Study groups in NCT04340765
Study groupRoleWhat they receive
18F-fluorocholine PET/CTExperimental18F-fluorocholine PET/CT
Receives: Drug: 18F-fluorocholine

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. The sensitivities of 18F-fluorocholine PET/CT and NaF PET/CT

    The lesion-based sensitivities of these two image modalities (The number of true positive image findings/The number of confirmed metastasis)

    Measured: 6 weeks

  2. The specificities of 18F-fluorocholine PET/CT and NaF PET/CT

    The lesion-based specificities of these two image modalities (The number of true negative image findings/The number of confirmed e benign lesion)

    Measured: 6 weeks

Secondary outcomes (1)
  1. Extraskeletal metastatic lesions detected by 18F-fluorocholine PET/CT

    To calculated the extraskeletal metastatic lesion that is detected by 18F-fluorocholine PET/CT

    Measured: 6 weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted10 Apr 2020
  2. Study start1 Feb 2018
  3. Primary completion31 Dec 2019
  4. Study completion31 Dec 2019

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Diagnosis
Allocation
Not applicable
Intervention model
Single group
Model description
The patients will receive both 18F-fluorocholine PET and NaF PET
Masking
None (open label)
Enrolment
36 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04340765
Sponsor's protocol ID
IRB106-65-A
Status last verified
Apr 2020
First submitted
7 Apr 2020
Last updated
13 Apr 2020
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A study testing 18F-fluorocholine in people with Prostate Cancer and Fluorocholine, run by Buddhist Tzu Chi General Hospital at 1 site in Taiwan.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 13 Apr 2020. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Taiwan. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

The sensitivities of 18F-fluorocholine PET/CT and NaF PET/CT (time frame: 6 weeks). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 Apr 2020.

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