MM-398 (Nanoliposomal Irinotecan, Nal-IRI) to Determine Tumor Drug Levels and to Evaluate the Feasibility of Ferumoxytol Magnetic Resonance Imaging to Measure Tumor Associated Macrophages and to Predict Patient Response to Treatment

This study is conducted over two phases. Pilot Phase: This study will enroll approximately 12 patients, up to 20 in total in the Pilot Phase and 30 patients in the Expansion Phase. The first three patients that are enrolled in the Pilot Phase can have any solid tumor type; however subsequent patients must have Non-small cell lung cancer (NSCLC), Colorectal cancer (CRC), Triple negative breast cancer (TNBC), Estrogen Receptor/Progesterone Receptor (ER/PR) positive breast cancer, pancreatic cancer, ovarian cancer, gastric cancer, gastro-oesophageal junction adenocarcinoma or head and neck cancer. No more than three patients with ER/PR positive breast cancer can be enrolled in the Pilot Phase and similar restrictions may be placed on other tumor types to ensure a heterogeneous population. Expansion Phase: The expansion will enroll patients with advanced metastatic breast cancer into three cohorts of 10 patients each depending on sub-type of breast cancer: Cohort 1: ER and/or PR-positive breast cancer Cohort 2: TNBC Cohort 3: BC with active brain metastasis