Brain MetastasisNCT02433171
Methionine and PBR28-PET (Peripheral Benzodiazepine Receptors) in Brain Metastases Following Radiosurgery
An observational study of Brain Metastasis, run by Yale University at 1 site in United States.
Trial summary
The goal of this protocol is to evaluate the potential of PET imaging of amino acid transport and microglial activation to improve the differentiation of tumor recurrence and radiation necrosis in patients with brain metastases after treatment with stereotactic radiosurgery (SRS) who have re-growing lesions. Read more about this study
- Who is it for?
- Ages 18 to 80 years
- Conditions the study is for
- Brain Metastasis
- Type of treatment
- Surgery or procedure
- How many people
- 8 participants
- Where
- 1 siteUnited States
- Study dates
- Jan 2015to 27 Jun 2017
- Phase
- Observational
- 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 18 to 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Patients who received SRS for melanoma or NSCLC brain metastases with regrowing lesions who are candidates for surgical intervention (biopsy or excision) at the Smilow Cancer Center or are candidates for monitoring by serial imaging will be screened for eligibility and offered enrollment
Who may be able to join
- Patients over 18 years with brain metastases from melanoma or non-small cell lung cancer
- Patients must have had SRS and regrowth in at least one lesion > 0.5 cm in greatest dimension and fall into one of two categories: a) patient is deemed clinically appropriate for surgical intervention (biopsy or craniotomy) OR b) patient is asymptomatic and has a life expectancy of > 6 months so that serial follow-up imaging is appropriate
- Willingness to participate in imaging studies
- Able to give informed consent
Who cannot join
- Subjects with history of prior radiation exposure for research purposes within the past year, such that participation in this study would place them over the FDA limits for annual radiation exposure. This guideline is an effective dose of 5 rem received per year.
- Subjects who are pregnant or currently breastfeeding
- Women of child-bearing age who are sexually active, unless they agree to two forms of contraception, and have a negative urine pregnancy test at screening and on the days of the PET imaging
- Patients unable to undergo MRI with gadolinium-based contrast for standard clinical reasons which include:
- Cardiac pacemaker, aneurysm clip, cochlear implants, Intra Uterine Device (IUD), shrapnel, neurostimulators, defibrillator, artificial heart valve, or history of metal fragments in eyes.
- Pregnancy
Show all 11Show fewer
- Body size too large for closed MRI
- Known hepatic fibrosis.
- Claustrophobia
- Contraindication to MR contrast agents: eGFR (epidermal growth factor receptor) < 30 by the Cockcroft- Gault formula if > 60 years old or with chronic renal disease
- Anaphylactic allergy to gadolinium
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Studies of Methionine-PET and PBR28-PET in Brain Metastases to Differentiate Tumor Recurrence and Radiation Necrosis Following Stereotactic Radiosurgery
The goal of this protocol is to evaluate the potential of PET imaging of amino acid transport and microglial activation to improve the differentiation of tumor recurrence and radiation necrosis in patients with brain metastases after treatment with stereotactic radiosurgery (SRS) who have re-growing lesions. These state-of-the-art imaging tools will be used in combination with standard magnetic resonance imaging (MRI), MR spectroscopy (MRS) and FDG-PET (fluorodeoxyglucose).
Read the detailed description
The investigators hypothesize that by using two different PET tracers, one sensitive to tumor metabolic activity, and one sensitive to inflammatory processes, investigators can separately identify metabolically active tumor from radiation necrosis related inflammation. This can be accomplished with quantitative assessments of tracer uptake using kinetic modeling techniques, as well as by high-resolution imaging to assess the distribution of tracer uptake in the tumor region. All participants in the study will have the receive the same diagnostic tests.
- Conditions
- Brain Metastasis
- Being tested
- Standard of Care FDG-PET Imaging
- Keywords
- regrowth, radiosurgery, radiation necrosis
- Medical subject headings
- Brain Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Standard of Care FDG-PET ImagingProcedure or surgery
Also called DWI, MRPerfusion, MRSpectroscopy and FDG-PET
[11C]Methionine [11]. This natural amino acid, and its various fluorinated derivatives, has been widely used in brain tumor studies due to a) high tumor-to-normal brain contrast, and b) its sensitivity to biological functions including amino acid transport and utilization. [11C]PBR28 [12]. This ligand is one of a series of second-generation tracers that bind to TSPO (translocator protein), a protein that is upregulated in activated microglia.
| Study group | Role | What they receive |
|---|---|---|
| Melanoma Brain Metastases | Stage 4 cancer patient population with melanoma with brain metastases previously treated with SRS Receives: Procedure: Standard of Care FDG-PET Imaging | |
| Lung Cancer Brain Metastases | Stage 4 cancer patient population with non-small cell lung cancer with brain metastases previously treated with SRS Receives: Procedure: Standard of Care FDG-PET Imaging |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in Regrowing Tumor Rate from Radiation Effect
Measured: 6 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted4 May 2015 (estimated)
- Study startJan 2015
- Primary completion27 Jun 2017
- Study completion27 Jun 2017
Why it stopped: Lack of available funding.
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Brain MetastasisStudies of the same condition, open and under way.
- More trials run by Yale UniversityThe sponsor's other registered studies.
- 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
- 8 participants (actual)
Sponsor and investigators
- Lead sponsor
- Yale University
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Veronica Chiang, MD, Principal investigator, Yale University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02433171
- Sponsor's protocol ID
- 1401013294
- Status last verified
- May 2019
- First submitted
- 19 Dec 2014
- Last updated
- 28 May 2019
- Results posted
- No
- Data monitoring committee
- No
Publications
Tran TT, Gallezot JD, Jilaveanu LB, Zito C, Turcu G, Lim K, Nabulsi N, Huang H, Huttner A, Kluger HM, Chiang VL, Carson R. [11C]Methionine and [11C]PBR28 as PET Imaging Tracers to Differentiate Metastatic Tumor Recurrence or Radiation Necrosis. Mol Imaging. 2020 Jan-Dec;19:1536012120968669. doi: 10.1177/1536012120968669.
PubMed 33147119
Study at a glance
From the registry record, last updated by the sponsor on 28 May 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Studies of Methionine-PET and PBR28-PET in Brain Metastases to Differentiate Tumor Recurrence and Radiation Necrosis Following Stereotactic Radiosurgery
- ClinicalTrials.gov ID
- NCT02433171
- Acronym / sponsor ID
- 1401013294
- Conditions
- Brain Metastasis
- Keywords
- regrowth, radiosurgery, radiation necrosis
- Study type
- Observational
- Recruitment status
- TerminatedReason stopped: Lack of available funding.
- Enrolment
- 8 participants (actual)
- Lead sponsor
- Yale UniversityUniversity, hospital or other
- Study start
- Jan 2015
- Primary completion
- 27 Jun 2017 (actual)
- Study completion
- 27 Jun 2017 (actual)
- First posted
- 4 May 2015 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The goal of this protocol is to evaluate the potential of PET imaging of amino acid transport and microglial activation to improve the differentiation of tumor recurrence and radiation necrosis in patients with brain metastases after treatment with stereotactic radiosurgery (SRS) who have re-growing lesions. These state-of-the-art imaging tools will be used in combination with standard magnetic resonance imaging (MRI), MR spectroscopy (MRS) and FDG-PET (fluorodeoxyglucose).
Detailed description
The investigators hypothesize that by using two different PET tracers, one sensitive to tumor metabolic activity, and one sensitive to inflammatory processes, investigators can separately identify metabolically active tumor from radiation necrosis related inflammation. This can be accomplished with quantitative assessments of tracer uptake using kinetic modeling techniques, as well as by high-resolution imaging to assess the distribution of tracer uptake in the tumor region. All participants in the study will have the receive the same diagnostic tests.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Melanoma Brain Metastases | – | Procedure: Standard of Care FDG-PET ImagingStage 4 cancer patient population with melanoma with brain metastases previously treated with SRS |
| Lung Cancer Brain Metastases | – | Procedure: Standard of Care FDG-PET ImagingStage 4 cancer patient population with non-small cell lung cancer with brain metastases previously treated with SRS |
Who may qualify
- Ages
- 18 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Patients who received SRS for melanoma or NSCLC brain metastases with regrowing lesions who are candidates for surgical intervention (biopsy or excision) at the Smilow Cancer Center or are candidates for monitoring by serial imaging will be screened for eligibility and offered enrollment
Key inclusion criteria (4 listed)
- Patients over 18 years with brain metastases from melanoma or non-small cell lung cancer
- Patients must have had SRS and regrowth in at least one lesion > 0.5 cm in greatest dimension and fall into one of two categories: a) patient is deemed clinically appropriate for surgical intervention (biopsy or craniotomy) OR b) patient is asymptomatic and has a life expectancy of > 6 months so that serial follow-up imaging is appropriate
- Willingness to participate in imaging studies
- Able to give informed consent
Key exclusion criteria (11 listed)
- Subjects with history of prior radiation exposure for research purposes within the past year, such that participation in this study would place them over the FDA limits for annual radiation exposure. This guideline is an effective dose of 5 rem received per year.
- Subjects who are pregnant or currently breastfeeding
- Women of child-bearing age who are sexually active, unless they agree to two forms of contraception, and have a negative urine pregnancy test at screening and on the days of the PET imaging
- Patients unable to undergo MRI with gadolinium-based contrast for standard clinical reasons which include:
- Cardiac pacemaker, aneurysm clip, cochlear implants, Intra Uterine Device (IUD), shrapnel, neurostimulators, defibrillator, artificial heart valve, or history of metal fragments in eyes.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Standard of Care FDG-PET ImagingAlso: DWI, MRPerfusion, MRSpectroscopy and FDG-PET[11C]Methionine [11]. This natural amino acid, and its various fluorinated derivatives, has been widely used in brain tumor studies due to a) high tumor-to-normal brain contrast, and b) its sensitivity to biological functions including amino acid transport and utilization. [11C]PBR28 [12]. This ligand is one of a series of second-generation tracers that bind to TSPO (translocator protein), a protein that is upregulated in activated microglia. | Procedure or surgery | Lung Cancer Brain Metastases, Melanoma Brain Metastases |
Primary outcome
Change in Regrowing Tumor Rate from Radiation Effect
Time frame: 6 months
Results and safety
The study was stopped early (reason given: Lack of available funding.). Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 28 May 2019.
- Derived from this study: PubMed 33147119Tran TT, Gallezot JD, Jilaveanu LB, Zito C, Turcu G, Lim K, Nabulsi N, Huang H, Huttner A, Kluger HM, Chiang VL, Carson R. [11C]Methionine and [11C]PBR28 as PET Imaging Tracers to Differentiate Metastatic Tumor Recurrence or Radiation Necrosis. Mol Imaging. 2020 Jan-Dec;19:1536012120968669. doi: 10.1177/1536012120968669.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Veronica Chiang, MD principal investigator
Yale University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Brain Metastasis, run by Yale University at 1 site in United States.
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 4 inclusion and 11 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: stopped early, as of the sponsor's last update on 28 May 2019. 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 United States. 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 was stopped early (reason given: Lack of available funding.). Results are not available in the source record.
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?
Change in Regrowing Tumor Rate from Radiation Effect (time frame: 6 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT02433171, which also lists 1 linked publication.
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 28 May 2019.