taVNS for Breast Cancer Pain Management

This trial explores whether a home-based treatment called taVNS, a non-invasive therapy that stimulates a nerve in the ear, can help manage pain and other symptoms such as anxiety, depression, and fatigue in breast cancer survivors. Participants will use either the active or a sham version of the treatment twice daily for four weeks. This trial is ideal for breast cancer survivors who have completed primary treatment and experience significant pain regularly. Participants should have a stable treatment plan, internet access, and be willing to provide stool samples and undergo brain imaging. As an unphased trial, this study offers an opportunity to contribute to innovative research that could enhance the quality of life for breast cancer survivors.

You don't need to stop your current medications, but you must be committed to maintaining your current treatment plan during the study. If you've recently started or changed the dose of pain medications, you may not be eligible.

Research has shown that transcutaneous auricular vagus nerve stimulation (taVNS) is generally safe and well-tolerated. Studies have found that it rarely causes side effects, and when it does, they are usually mild and temporary, such as minor ear pain or brief discomfort.

One study with breast cancer patients used taVNS to address sleep problems and found it safe and practical. Another study with breast cancer patients undergoing surgery also confirmed its safety and ease of tolerance.

Unlike traditional pain management methods for breast cancer, which often rely on medications like opioids and NSAIDs, transcutaneous auricular vagus nerve stimulation (taVNS) offers a non-invasive alternative. Researchers are excited about taVNS because it stimulates the vagus nerve through the skin of the ear, potentially reducing pain without the side effects associated with drugs. This method offers a novel mechanism of action, targeting the nervous system directly to modulate pain. Additionally, by providing a drug-free option, taVNS could improve the quality of life for patients who suffer from side effects of standard pain medications.

This trial will compare the effects of active taVNS intervention with a sham taVNS for managing pain in breast cancer patients. Studies have shown that transcutaneous auricular vagus nerve stimulation (taVNS), which involves using a device on the ear to stimulate a nerve, can alleviate pain and other symptoms in breast cancer patients. Research indicates that taVNS can significantly reduce cancer-related fatigue, depression, and nighttime awakenings. One study suggested it might enhance overall quality of life during treatments like chemotherapy or radiotherapy. Evidence also supports its role in reducing anxiety and improving sleep. Overall, taVNS appears promising for managing pain and other symptoms in breast cancer survivors.¹²⁴⁶⁷