This study looks at proteins called **ENPP1/cGAS** and **FAP** in tumor samples from Vietnamese patients. These proteins are studied using a method called immunohistochemistry (IHC) which helps to see how they are present in the tumors. Importantly, there are no treatments or procedures for participants because only existing tumor samples are used. These samples were collected during regular medical care, so no new samples or surgeries are needed for this study.
- This study does not require any new medical visits or treatments.
- Only existing archived tissue samples will be used.
- The study does not provide compensation as no participant involvement is needed.
Eligible participants are adults (18+ years old) with a confirmed diagnosis of certain cancers. The study only uses archived samples that meet specific criteria and does not require new consent for using these samples. This ensures no additional risk or inconvenience to participants.