Molecular Imaging of Brain Tumors Using Labeled Technetium-99m 1-Thio-D-Glucose.

The overall goal is to study the effectiveness of SPECT imaging of primary brain tumors and relapse of brain tumors using technetium-99m labeled glucose.

Phase I of the study:

Biodistribution of 99mTc-1-thio-D-glucose in patients with primary brain tumors and in patients with recurrence of a brain tumor.

The main objectives of the study:

• To evaluate the distribution of 99mTc-1-thio-D-glucose in normal tissues and tumors in patients with brain tumors at different time intervals.
• To evaluate dosimetry 99mTc-1-thio-D-glucose based on the pharmacokinetic parameters of the drug after a single intravenous administration.
• To study the safety of use and tolerability of the drug 99mTc-1-thio-D-glucose after a single intravenous administration in a diagnostic dosage.

Additional research tasks:

• To conduct a comparative analysis of the diagnostic information obtained in the visualization of brain tumors by SPECT using 99mTc-1-thio-D-glucose with data obtained by magnetic resonance imaging (MRI) and/or positron emission tomography (PET) and immunohistochemical (IHC) research of postoperative material.
• To study the diagnostic effectiveness of 99mTc-1-thio-D-glucose SPECT in imaging of brain tumors.
• To evaluate the overall survival of patients with brain tumors depending on the results of 99mTc-1-thio-D-glucose SPECT.

Methodology:

Open-label, exploratory, single centre study. The subjects will receive a single injection of the labelled tracer.

Inclusion criteria

• Subject is > 18 years of age
• Clinical and radiological diagnosis of a primary brain tumor or recurrence of a brain tumor with immunohistological verification.
• Clinical and radiological diagnosis of a benign intracranial lesions.
• White blood cell count: > 2.0 x 10^9/L
• Haemoglobin: > 80 g/L
• Platelets: > 50.0 x 10^9/L
• alanine amino transferase (ALT), alkaline phosphatase (ALP), aspartate aminotransferase (AST): =< 5.0 times Upper Limit of Normal
• Bilirubin =< 2.0 times Upper Limit of Normal
• Serum creatinine: Within Normal Limits
• Blood glucose level not more than 5.9 mmol/L
• A negative pregnancy test (serum beta-human chorionic gonadotropin, beta-HCG) at screening for all patients of childbearing potential. Sexually active women of childbearing potential participating in the study must use a medically acceptable form of contraception for at least 30 days after study termination
• Subject is capable to undergo the diagnostic investigations to be performed in the study
• Informed consent

Exclusion criteria

• Second, non-brain malignancy
• Active current autoimmune disease or history of autoimmune disease
• Active infection or history of severe infection within the previous 3 months (if clinically relevant at screening)
• Known HIV positive or chronically active hepatitis B or C
• Administration of other investigational medicinal product within 30 days of screening
• Ongoing toxicity > grade 2 from previous standard or investigational therapies, according to US National Cancer Institute's