After patient inclusion an fludeoxyglucose-18 ([18F]-FDG) PET scan will be performed to delineate viable tumour lesions. On day 1, patients will receive a low dose of [89Zr]-Df-CriPec® docetaxel (corresponding to approximately 0.1-1 mg docetaxel) followed by maximally 3 [89Zr] PET scans (timing of PET scan can be adapted depending on results obtained, within timeframe of 2 h - 9 days after administration) to evaluate biodistribution and tumour uptake. Two weeks later, the patients will receive unlabelled CriPec® docetaxel up to the Recommended Phase II Dose (RP2D) given every 3 weeks (Q3W) that will be determined in the phase I NAPOLY trial (CT-CL01), immediately followed by a second low dose of [89Zr]-Df-CriPec® docetaxel and maximally 3 [89Zr]PET scans (timing of PET scan can be adapted depending on results obtained, within timeframe of 2 hrs - 9 days after administration) to evaluate biodistribution and tumour uptake with therapeutic dosage.
A clinical phase I, open-label PET study with [89Zr]-Df-CriPec® docetaxel in patients with solid tumours to assess biodistribution and tumour accumulation of [89Zr]-Df-CriPec® docetaxel.