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Detection of Acid Sphingomyelinase/Ceramide Pathway Activation in Radiotherapy Patients Using Intravoxel Incoherent Motion (IVIM) Diffusion-weighted Magnetic Resonance Imaging and Serum Biomarkers

Detection of Acid Sphingomyelinase/Ceramide Pathway Activation in Radiotherapy Patients Using Intravoxel Incoherent Motion (IVIM) Diffusion-weighted Magnetic Resonance Imaging and Serum Biomarkers

Status
Withdrawn
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02465723
Enrollment
0
Registered
2015-06-08
Start date
2015-06-30
Completion date
Unknown
Last updated
2016-09-21

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

Conditions

Metastatic Disease to Bone, Metastatic Disease to Soft Tissue

Keywords

Intravoxel Incoherent Motion (IVIM), Diffusion-weighted Magnetic Resonance, Acid Sphingomyelinase/Ceramide Pathway Activation, 15-104

Brief summary

The purpose of this study is to find out if special blood tests and imaging scans can help evaluate the effects of the radiation the patient receives as part of standard treatment. The patient will undergo either stereotactic or conventional radiation treatment as determined by the treating doctor. Previous evidence suggests that blood flow to tumors is affected by the amount (dose) of radiation that it receives. This effect may be seen as soon as 1-2 hours after the radiation is given. This study will evaluate if these changes can be seen and measured by performing a special type of scan called Intravoxel Incoherent Motion (IVIM) diffusion-weighted Magnetic Resonance Imaging (MRI) and a blood test. IVIM MRI is a research exam which is similar to a standard MRI exam, with only a slight difference in the technical parameters used to acquire the images.

Interventions

DEVICEMRI with IVIM DW-MRI
OTHERBlood draw

For each patient enrolled, 8-10 mL of whole blood will be collected into glass, anti-coagulant-free tubes and allowed to clot 20-30 minutes.

Sponsors

Memorial Sloan Kettering Cancer Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
DIAGNOSTIC
Masking
NONE

Eligibility

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

Inclusion criteria

* Histologically proven cancer * Patients deemed clinically appropriate for radiation treatment as part of the standard care provided by their treating physician, and will receive either 24 Gy (one fraction) or 3 Gy x 10 fractions. * Life expectancy \> 6 months * KPS\>60% * Age ≥ 18 years old.

Exclusion criteria

* Pregnant patients * Patients who are unwilling or unable to undergo MRI including patients with contraindications to MRI such as the presence of cardiac pacemakers or non-compatible intracranial vascular clips, claustrophobia, inability to lie flat for the duration of the study etc * Prior radiotherapy to the site of intended treatment * Patients with tumor involving brain or spinal cord * Platelet count \<75,000/μl, HgB level \<9 g/dl, WBC \<3500/μl * Presence of metastases in the upper thoracic spine (in order to avoid DW- MRI parameter measurement variability due to cardiac motion) * Lesions \<1.5 cm (to assure robust measurements) * Non-English speaking patients

Design outcomes

Primary

MeasureTime frameDescription
ASMase activity measurementup to 18-24 hours after the first radiation treatmentFor each serum ASMase activity measurement, we will use 3 technical assay replicates. Each of three replicates will be averaged. Then the post-treatment activity will be normalized (fraction) against its paired pre-treatment activity.

Secondary

MeasureTime frameDescription
C16 serum ceramide levels1 yearTotal C16 serum ceramide level, expressed as ng of ceramide per mL, will be measured for the pre-RT serum and post-RT serum. For each patient, the post-RT C16 ceramide level will be expressed as a fraction of the pre-RT levels.
C18 serum ceramide levels1 yearTotal C18 serum ceramide level, expressed as ng of ceramide per mL, will be measured for the pre-RT serum and post-RT serum. For each patient, the post-RT C18 ceramide level will be expressed as a fraction of the pre-RT levels.

Countries

United States

Outcome results

None listed

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