What are the effective results of the pilot study on 'low dose immunotherapy'

I apologize, but I couldn't find any specific information about a pilot study on 'low dose immunotherapy' in the treatment of head and neck cancer patients. This could be because either such a study does not exist or it has not been widely reported or published yet. Immunotherapy is a rapidly advancing field, and there are several ongoing research studies evaluating different approaches to harnessing the immune system for cancer treatment. Should you have any other questions or topics you would like information on, please feel free to ask.