[18F]-Fluoro-2-Deoxy-D-Glucose and -[18F] Dihydro-Testosterone Pet Imaging in Patients With Progressive Prostate Cancer

Обзор

This study will use PET scans, which is a type of x-ray test that uses a radiotracer, to see whether these scans may be better able to find places in the body where your prostate cancer may have spread.

Подробное описание

Our preliminary studies have shown that whole body FDG-PET imaging identifies areas of abnormal metabolism in a majority of tumor sites in patients with progressive disease and that changes in FDG accumulation parallel changes in PSA after treatment. This suggests that changes in FDG metabolism may provide an early assessment of treatment outcomes. In previous work we established a methodology to examine a radiotracer in patients with progressive disease and abnormal imaging studies, which we have applied to the clinical states of non-castrate and castrate metastatic disease. This design is characterized by:

1\) Evaluation of uptake on a site-by-site basis in relation to conventional studies 2) Standardization of uptake values in tumor relative to a normal organ 3) Controlling for progression using standard measures of progression including a rising PSA, new or enlarging lesions on bone or transaxial imaging, and new symptoms of disease. In the present study we are evaluating fluorinated dihydrotestosterone (FDHT) in addition to FDG. FDHT is targeted to the AR and has been shown in preliminary studies to visualize prostate cancers in man. This study will apply our established methods to investigate FDHT imaging in patients with progressive prostate cancer. In the selected cases where tumor is available, we will study associations between FDHT accumulation and AR expression.

Вмешательства

• Препарат [18F]-Fluoro-2-Deoxy-D-Glucose and -[18F] Dihydro-Testosterone
  Registered patients will undergo PET scanning using either FDHT alone or FDG and FDHT depending on the clinical question being asked. Scans will be performed serially at baseline, week 4, week 12, and every 12 weeks of treatment up to a maximum of 8 FDHT/FDG scan set in a 12 month period (maximum 40 scan sets per lifetime) unless the therapeutic protocol or scientific rationale of the therapeutic drug being applied specifically dictates an alternative schedule. Patients may have blood drawn for

Первичные конечные точки

• To study the accumulation and biodistribution of FDHT in patients with progressive prostate cancer. The accumulation and location of FDHT activity will be assessed on a site by site basis and correlated with radionuclide bone scan, CT and MRI. [Срок оценки: Baseline, 4 weeks and 12 weeks]

Вторичные конечные точки (5)

• The kinetics, metabolism, and biodistribution will be assessed. [Срок оценки: Baseline. 4 weeks and 12 weeks]
• To correlate the accumulation of 18FDHT to 18FDG. [Срок оценки: 2 years]
• To study changes in 18FDHT accumulation over time in patients treated with: Castration and other hormones, Chemotherapy, Agents directed toward the androgen receptor [Срок оценки: 2 years]
• relationship between FDHT uptake and tumor diffusivity [Срок оценки: 2 years]
• relationship between FDHT uptake and tissue analyses [Срок оценки: 2 years]

Критерии участия

Критерии включения

• Patients with histologically confirmed prostate cancer.
• Progressive disease manifest by either:
• Imaging modalities:
• Bone Imaging: New osseous lesions on bone imaging (bone scintigraphy or NaF PET scan) and/or MRI or CT: An increase in measurable soft tissue disease, or the appearance of new sites of disease. Or
• Biochemical progression: A minimum of three rising PSA values from a baseline that are obtained 1 week or more apart, or 2 measurements 2 or more weeks apart.
• Visible lesions by either CT, bone imaging, or MRI consistent with disease.
• Informed consent.

Критерии исключения

• Previous anaphylactic reaction to either FDHT or FDG
• Hepatic: Bilirubin > 1.5 x upper limit of normal (ULN), AST/ALT >2.5 x ULN, albumin < 2 g/dl, and GGT > 2.5 x ULN IF Alkaline phosphatase > 2.5 x ULN
• Renal: Creatinine >1.5 x ULN or creatinine clearance < 60 mL/min

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

США · 7 центров

• Memorial Sloan Kettering Basking Ridge (Consent Only) — Basking Ridge
• Memorial Sloan Kettering Monmouth (Consent only) — Middletown
• Memorial Sloan Kettering Bergen (Consent Only) — Montvale
• Memorial Sloan Kettering Commack (Consent only) — Commack
• Memorial Sloan Kettering Westchester (Consent only) — Harrison
• Memorial Sloan Kettering Cancer Center — New York
• Memorial Sloan Kettering Nassau (Consent Only) — Uniondale

Идентификаторы

NCT: NCT00588185 · 00-095

Первоисточники (государственные реестры)

• ClinicalTrials.gov (NIH, США)

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