Relapsed Mycosis Fungoides

This phase I trial studies the best dose and side effects of recombinant vesicular stomatitis virus (VSV) carrying the human (h) sodium iodide symporter (NIS) and Interferon (IFN) beta (β) genes (VSV-hIFNβ-NIS) in combination with cemiplimab in patients with T-cell lymphoma. A virus, called VSV-hIFNβ-NIS, which has been changed in a certain way, may be able to kill cancer cells without damaging normal cells. Immunotherapy with ipilmumab and cemiplimab may induce changes in body's immune system and may interfere with the ability of tumor cells to grow and spread.