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Hyperpolarized Carbon C 13 Pyruvate Magnetic Resonance Spectroscopic Imaging in Detecting Lactate and Bicarbonate in Participants With Central Nervous System Tumors

A Pilot Study to Assess Lactate and Bicarbonate Detection Within Malignant Brain Tumors Using [1-13C]-Pyruvate DNP Magnetic Resonance Spectroscopy (MRS)

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03565367
Enrollment
9
Registered
2018-06-21
Start date
2018-11-06
Completion date
2019-06-20
Last updated
2023-12-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Malignant Central Nervous System Neoplasm, Metastatic Malignant Neoplasm in the Central Nervous System

Brief summary

This early phase I trial studies how well hyperpolarized carbon C 13 pyruvate magnetic resonance imaging works in detecting lactate and bicarbonate in participants with central nervous system tumors. Hyperpolarized carbon C 13 pyruvate magnetic resonance imaging may be used to measure the metabolic state of malignant brain tumors.

Detailed description

PRIMARY OBJECTIVES: I. To assess the safety of intravenous (IV) injection of hyperpolarized carbon C 13 pyruvate (hyperpolarized \[1-13C\] pyruvate) for magnetic resonance imaging (MRI). II. To assess the frequency and sensitivity with which lactate and bicarbonate signals can be detected in malignant brain tumors after IV injection of hyperpolarized \[1-13C\] pyruvate. OUTLINE: Participants undergo MRI over 45 minutes at baseline. Participants then receive hyperpolarized carbon C 13 pyruvate IV over 30-40 seconds. Within 1 minute, participants undergo magnetic resonance spectroscopic imaging (MRSI) over 3 minutes and MRI over 10 minutes (participants may receive gadolinium at the discretion of the protocol director). After completion of study, participants are followed up periodically.

Interventions

OTHERGadolinium

gadolinium enhanced MRI

PROCEDUREMagnetic Resonance Imaging

Undergo MRI

PROCEDUREMagnetic Resonance Spectroscopic Imaging

Undergo MRSI

Sponsors

National Institutes of Health (NIH)
CollaboratorNIH
National Cancer Institute (NCI)
CollaboratorNIH
Daniel M. Spielman
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
DIAGNOSTIC
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients with a known diagnosis of central nervous system (CNS) malignancy, including metastases, with known enhancement on magnetic resonance (MR) who are otherwise eligible to undergo MRI * Glomerular filtration rate (GFR) \> 30 ml/min * No allergy to gadolinium * Ability to understand and the willingness to sign a written informed consent document

Exclusion criteria

* Refusal to have an IV placed for injection * Acute major illness (e.g., unstable angina, etc.) or other condition that makes participation unsafe, per the investigator?s judgement * Total bilirubin \> 1.5 x upper limit of normal (ULN) * Aspartate aminotransferase (AST)/alanine aminotransferase (ALT) \> 2.5 x ULN * Gamma-glutamyltransferase (GGT) \> 2.5 x ULN * Pregnant or breast-feeding * Cardiovascular risk, including: * Poorly controlled hypertension, defined as either systolic \> 170 or diastolic \> 110 * Congestive heart failure * Myocardial infarction within the past year * QT prolongation, defined as pretreatment corrected QT interval (QTc) \> 440 msec in males or \> 460 msec in females

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Grade 2 or Higher Toxicities2 days (+/-2) after the scanThe measurement of this drug is the number of participants with Grade 2 or higher related adverse events (except for asymptomatic lab increases)

Other

MeasureTime frameDescription
Lactate and Bicarbonate Production in Tumor and Normal Brain TissueImaging timepoint (up to 15 minutes to obtain scan)The outcome is defined as the number of participants with hyperpolarized carbon C 13 pyruvate magnetic resonance signal detection above background noise level of both lactate and bicarbonate in all tumors screened.

Countries

United States

Participant flow

Participants by arm

ArmCount
Healthy Volunteers
Participants undergo MRI over 45 minutes at baseline, then receive hyperpolarized carbon C 13 pyruvate IV over 30-40 seconds. Within 1 minute, participants undergo MRSI over 3 minutes and MRI over 10 minutes.
3
Known CNS Malignancy
Participants undergo MRI over 45 minutes at baseline, then receive hyperpolarized carbon C 13 pyruvate IV over 30-40 seconds. Within 1 minute, participants undergo MRSI over 3 minutes and MRI over 10 minutes (participants may receive gadolinium at the discretion of the protocol director).
2
Total5

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyNo scan due to technical issues40

Baseline characteristics

CharacteristicHealthy VolunteersKnown CNS MalignancyTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
3 Participants2 Participants5 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants0 Participants1 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
2 Participants2 Participants4 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
1 Participants0 Participants1 Participants
Race (NIH/OMB)
Black or African American
1 Participants0 Participants1 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
1 Participants2 Participants3 Participants
Region of Enrollment
United States
3 Participants2 Participants5 Participants
Sex: Female, Male
Female
2 Participants1 Participants3 Participants
Sex: Female, Male
Male
1 Participants1 Participants2 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 30 / 2
other
Total, other adverse events
2 / 30 / 2
serious
Total, serious adverse events
0 / 30 / 2

Outcome results

Primary

Number of Participants With Grade 2 or Higher Toxicities

The measurement of this drug is the number of participants with Grade 2 or higher related adverse events (except for asymptomatic lab increases)

Time frame: 2 days (+/-2) after the scan

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Healthy VolunteersNumber of Participants With Grade 2 or Higher Toxicities0 Participants
Known CNS MalignancyNumber of Participants With Grade 2 or Higher Toxicities0 Participants
Other Pre-specified

Lactate and Bicarbonate Production in Tumor and Normal Brain Tissue

The outcome is defined as the number of participants with hyperpolarized carbon C 13 pyruvate magnetic resonance signal detection above background noise level of both lactate and bicarbonate in all tumors screened.

Time frame: Imaging timepoint (up to 15 minutes to obtain scan)

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026