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Annals of Nuclear Medicine
Erschienen in: Annals of Nuclear Medicine 9/2016

14.07.2016 | Original Article

Phase IIa clinical study of [18F]fluciclovine: efficacy and safety of a new PET tracer for brain tumors

verfasst von: Akihide Kondo, Hisato Ishii, Shigeki Aoki, Masaru Suzuki, Hidekazu Nagasawa, Kazuo Kubota, Ryogo Minamimoto, Atsushi Arakawa, Masato Tominaga, Hajime Arai

Erschienen in: Annals of Nuclear Medicine | Ausgabe 9/2016

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Abstract

Objective

[18F]Fluciclovine (anti-[18F]FACBC) has demonstrated diagnostic efficacy for cancers of the brain where [18F]fludeoxyglucose has limitations. We conducted a phase IIa study of anti-[18F]FACBC to assess its accumulation pattern and safety in patients with malignant glioma.

Methods

Five patients with glioma scheduled for brain tumor resection received anti-[18F]FACBC. Brain positron emission tomography (PET) was performed following intravenous administration of anti-[18F]FACBC, and subsequently, preoperative gadolinium contrast-enhanced T1-weighted (CE-T1W) magnetic resonance imaging (MRI) was performed for surgery. Specimens for histopathological evaluation were collected during surgery, and their location was precisely determined on CE-T1W MRI and anti-[18F]FACBC PET/CT images. In addition, tumor extent defined on the MRI and PET/CT images was compared. To determine time–activity curves for anti-[18F]FACBC uptake in brain tumor and normal tissues, regions of interest were set in the brain tumor, contralateral normal tissue and the cerebellum, and their standardized uptake values (SUV) were calculated. The safety of anti-[18F]FACBC was assessed based on subjective symptoms and objective findings, electrocardiograms, vital signs, laboratory results, and the incidence of adverse events.

Results

Anti-[18F]FACBC accumulated in the malignant gliomas of all patients. CE-T1W MRI detected gliomas in all patients, but anti-[18F]FACBC PET/CT generally delineated wider regions of tumor extent than CE-T1W MRI. Two of the histopathologically confirmed tumors were located in regions that were defined using anti-[18F]FACBC PET/CT, but not using CE-T1W MRI. Two patients experienced three mild adverse events: one complained of a dull headache and later a mild headache, and the other showed general malaise. These symptoms resolved spontaneously without treatment. Only the mild headache could not be ruled out from having a causal relationship with anti-[18F]FACBC. Favorable T/N ratios regarding anti-[18F]FACBC uptake between tumors and normal control tissues were demonstrated in this trial.

Conclusions

It is suggested that anti-[18F]FACBC PET/CT has the ability to delineate glioma spread that is undetectable using CE-T1W MRI. Anti-[18F]FACBC is safe in patients with malignant glioma.
This study was registered in the Japan Pharmaceutical Information Center Clinical Trials Information, which is one of the World Health Organization registries (registration number: JapicCTI-111387).
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Metadaten
Titel
Phase IIa clinical study of [18F]fluciclovine: efficacy and safety of a new PET tracer for brain tumors
verfasst von
Akihide Kondo
Hisato Ishii
Shigeki Aoki
Masaru Suzuki
Hidekazu Nagasawa
Kazuo Kubota
Ryogo Minamimoto
Atsushi Arakawa
Masato Tominaga
Hajime Arai
Publikationsdatum
14.07.2016
Verlag
Springer Japan
Erschienen in
Annals of Nuclear Medicine / Ausgabe 9/2016
Print ISSN: 0914-7187
Elektronische ISSN: 1864-6433
DOI
https://doi.org/10.1007/s12149-016-1102-y

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