Study of 203Pb-RMX-VH-PIB Dosimetry and Biodistribution in Patients With Glioblastoma Multiform (GBM) and Pancreatic Ductal Adenocarcinoma (PDAC)

Exclusion criteria

• . Known hypersensitivity to RMX-VH peptide analogue, 203Pb-RMX-VH-PIB, 203Pb (Lead) , or any of the excipients of 203Pb-RMX-VH-PIB.
• . Inability to undergo MRI or CT/SPECT/CT scans
• . Current somatic or psychiatric disease/condition that may interfere with consent or the objectives and assessments of the study.
• . Pregnancy or plans to conceive during the course of study participation.
• . In GBM groups participants requiring MRI: History of hypersensitivity or contraindication to gadolinium-based contrast agents, including prior allergic or anaphylactoid reactions to gadolinium contrast media, or any condition (e.g., severe renal impairment, acute kidney injury) that, in the investigator's judgment, increases the risk associated with gadolinium administration.
• . In PDAC groups participants requiring CT scans: Any contraindications to iodinated contrast agents include a history of severe hypersensitivity or allergic reaction to iodinated contrast media, significant renal impairment (e.g., eGFR \< 30 mL/min/1.73 m² or acute kidney injury), uncontrolled hyperthyroidism or other thyroid disorders that may worsen with iodine exposure, prior contrast-induced nephropathy, pregnancy, and any unstable medical condition such as severe heart failure or hemodynamic instability that, in the investigator's judgment, increases the risk of contrast administration.
• . Male and female participants of childbearing potential who are unwilling or unable to use an acceptable method of contraception for the duration of the study.
• . Women who are breastfeeding