GIP and neoplasm: Treatment of mice with s.c. CFPAC tumours with 1.1 MBq of [177Lu]Lu-DOTA-GIP-SPNs injected i.t. combined with PTT arrested tumour growth, while [177Lu]Lu-DOTA-GIP-SPNs or PTT alone only slowed tumour growth compared to mice treated with non-radioactive DOTA-GIP-SPNs with or without PTT or normal saline-treated mice.