QoLIDia: Quality of Life in Cancer Patients With Diabetes During Immunotherapy

The goal of this observational study is to see how type 2 diabetes affects quality of life in cancer patients receiving immunotherapy. We want to know if patients with diabetes have a greater decline in quality of life over six months compared to those without. The main question we aim to answer is: \- How does quality of life change over six months in patients with versus without diabetes? Participants will complete quality-of-life surveys at the start, then at 3 and 6 months. This will help us see if diabetes adds extra challenges during cancer treatment