We are studying a special type of treatment called **DC-CIK immunotherapy** for people with certain types of cancer. This treatment uses your own immune cells to help fight cancer after you've already had other treatments like surgery, chemotherapy, or radiotherapy.
**Who can join?** Adults aged 18 to 75 with liver, kidney, lung, colon, breast, or nasopharyngeal cancer can participate if they've completed conventional treatments. You shouldn't have other tumors or severe infections, and your blood tests need to meet specific standards. Women must use birth control during the study.
**Key Points:**
- This study includes several visits over a period to monitor your health and treatment effects.
- Participants will be divided into two groups: one receiving the investigational treatment and the other not.
- It's important to follow all study guidelines and restrictions, and you'll need to sign a consent form to participate.
**Things to Know:** If you have certain conditions like brain metastasis, active infections, or are pregnant or nursing, you may not be eligible. Please consider your health and ability to follow the study schedule before deciding to join.