68Ga-P16-093 and 68Ga-PSMA-11 PET/CT Imaging in the Same Group of Primary Prostate Cancer Patients

Официальное название

A Pilot Comparison of 68Ga-P16-093 and 68Ga-PSMA-11 in the Same Group of Primary Prostate Cancer Patients

Обзор

Prostate-specific membrane antigen (PSMA)-targeted PET imaging with 68Ga-labeled compounds is able to provide superior sensitivity and specificity to detect primary prostate tumor and its metastases, like the most widely studied 68Ga-PSMA-11. This pilot study was evaluate the diagnostic performance of 68Ga-P16-093, a novel radiopharmaceutical targeting PSMA, which was compared with 68Ga-PSMA-11 in the same group of primary prostate cancer patients.

Подробное описание

Prostate cancer (PC) is one of the most common malignancies worldwide in men, with persistently high numbers dying from this disease. Due to low levels of glycolysis in prostate cancer cell, the uses of 18F-FDG PET/CT to detect prostate cancer and its metastases are limited. Prostate specific membrane antigen (PSMA), as known as folate hydrolase I or glutamate carboxypeptidase II, is overexpressed on the cells of prostatic adenocarcinoma. Various low molecular weight radiopharmaceuticals targeting PSMA such as PSMA-11, PSMA-617 for 68Ga-labeling have been developed. 68Ga-PSMA PET/CT has demonstrated desirable sensitivity and specificity in the detection of prostate cancer lesions, which can find many micro lesions that cannot be identified by CT, MRI and bone scan. 68Ga-P16-093, a novel radiopharmaceutical modified based on 68Ga-PSMA-11, with the urea fragment of a conjugate that employs the HBED-CC chelator for labeling with 68Ga(III). The HBED-based chelating ligand binds the 68Ga3+ ion with high affinity in a pseudo-octahedral N2O4 coordination sphere by its two phenolate O, two amino-acetate carboxylate O, and two amino N donor atoms. This pilot study was prospectively designed to evaluate the diagnostic performance of 68Ga-P16-093 compared with 68Ga-PSMA-11 in the same group of primary prostate cancer patients.

Вмешательства

• Препарат 68Ga-P16-093
  Intravenous injection of 68Ga-P16-093 with the dosage of 1.8-2.2 MBq (0.05-0.06 mCi)/kg. Tracer doses of 68Ga-P16-093 will be used to image lesions of prostate cancer by PET/CT.
• Препарат 68Ga-PSMA-11
  Intravenous injection of 68Ga-PSMA-11 with the dosage of 1.8-2.2 MBq (0.05-0.06 mCi)/kg. Tracer doses of 68Ga-PSMA-11 will be used to image lesions of prostate cancer by PET/CT.

Первичные конечные точки

• Tumor detection rate [Срок оценки: through study completion, an average of 1 year]

Вторичные конечные точки (1)

• standardized uptake value (SUV) of tumor [Срок оценки: through study completion, an average of 1 year]

Критерии участия

Критерии включения

• histologically confirmed untreated primary prostate cancer patients;
• 68Ga-PSMA-11 and 68Ga-P16-093 PET/CT within a week;
• signed written consent.

Критерии исключения

• known allergy against PSMA;
• any medical condition that in the opinion of the investigator may significantly interfere with study compliance.

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Нет

Дизайн исследования

Распределение

Не применимо

Модель

Одна группа

Маскирование

Открытое

Основная цель

Диагностика

Центры проведения

Китай · 1 центр

• Peking Union Medical College Hospital — Пекин

Публикации

• Wang J, Li L, Chen J, Wang R, Xiang J, Peng X, Wang Y, Luo Y, Zhu L, Kung HF, Zhou Z, Xiao Y, Zhu Z. [68Ga]Ga-P16-093 PET/CT in newly diagnosed prostate cancer: Histopathological validation and comparison with [68Ga]Ga-PSMA-11. Eur J Nucl Med Mol Imaging. 2026 Apr;53(5):3064-3073. doi: 10.1007/s00259-025-07687-0. Epub 2025 Dec 10. PMID 41366119
• Wang G, Li L, Zhu M, Zang J, Wang J, Wang R, Yan W, Zhu L, Kung HF, Zhu Z. A prospective head-to-head comparison of [68Ga]Ga-P16-093 and [68Ga]Ga-PSMA-11 PET/CT in patients with primary prostate cancer. Eur J Nucl Med Mol Imaging. 2023 Aug;50(10):3126-3136. doi: 10.1007/s00259-023-06283-4. Epub 2023 May 26. PMID 37233785

Идентификаторы

NCT: NCT05324332 · PekingUMCH P16-093

Первоисточники (государственные реестры)

• ClinicalTrials.gov (NIH, США)

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