Cancer, Head and Neck

The goal of this clinical trial is to evaluate the safety and tolerability of increasing doses of \[177Lu\]Lu-AKIR001, both in relation to tolerable activity of lutetium-177 and the absorbed protein mass dose of AKIR-001 in patients with irresectable or metastatic CD44v6-expressing solid malignancies for whom no reasonable systemic treatment options are be available. The main question it aims to answer is: • What is the toxicity profile of the study drug \[177Lu\]Lu-AKIR001 according to the rate of Dose Limiting Toxicities and (Severe) Adverse Events? Participants will receive one \[177Lu\]Lu-AKIR001 infusion followed by a 6-week safety follow-up period, which can be extended up to 12 weeks. Possible additional infusions of the trial drug, up to a maximum number of four, can be given when clinical benefit is noted and toxicity is deemed acceptable.

The purpose of this prospective cohort study is to assess clinical and quality of life measures as well as to define the severity of adverse effects for the use of the RefleXion system to deliver intensity-modulated radiotherapy (IMRT), stereotactic body radiotherapy (SBRT), or SCINTIX Biology-guided radiotherapy (BgRT) in standard of care (SOC) use in the treatment of local,loco-regionally advanced, and oligometastatic malignancies. In addition, patient costs and charges will be analyzed to quantify the health economic impact of this modality. Workflow and quality of radiotherapy planning including a collection of dosimetric data will also be analyzed.