The purpose of Part 1 of this study is to evaluate the imaging characteristics, safety, biodistribution and pharmacokinetics of \[68Ga\]Ga-DFC413, and in Part 2 compare to \[68Ga\]Ga-NNS309 in patients with locally advanced or metastatic pancreatic ductal adenocarcinoma (PDAC), non-small cell lung cancer (NSCLC), HR+/HER2- ductal and lobular breast cancer (BC), triple negative breast cancer (TNBC), colorectal cancer (CRC), and soft tissue sarcoma (STS). In Part 2 of this study (comparison of \[68Ga\]Ga-DFC413 and \[68Ga\]Ga-NNS309), not all indications might be explored.