<qa>  What is the exception to the cluster of differentiation antigen 30?1. Confirmed diagnosis of previously untreated T-cell Non Hodgkins Lymphomas and NK lymphomas, with the exception of cluster of differentiation antigen 30 CD30 alk1 T-anaplastic large cell lymphoma ALCL. Patients with skin involvement alone are also excluded. For patients with skin involvement as part of systemic disease, prior topical treatment only is allowed. 