RecruitingPhase 2Drug trialAxitinib and Nivolumab for the Treatment of Mucosal MelanomaThe researchers are doing this study to find out whether the combination of axitinib and nivolumab is an effective and safe treatment for people with advanced or metastatic mucosal melanoma that has not been treated before. The researchers think that a combination of axitinib and nivolumab may help people with this disease because both drugs target and block proteins that play a role in cancer cell survival and growth. The researchers think the drugs may be more effective if given in combination rather than on their own.