Summary: The main objectives of this study are to assess the safety, tolerability, immunological activity, and preliminary efficacy of the Modi-1/Modi-1v vaccine, both as monotherapy and in combination with a checkpoint inhibitor (CPI) such as pembrolizumab or nivolumab (where these are standard of care in a non-neoadjuvant setting), in patients with advanced triple negative breast cancer (TNBC), advanced/...