TXNDC2 and diffuse large B-cell lymphoma: This is the first study to demonstrate that testis-specific antioxidant enzymes TXNDC2, TXNDC3, and TXNDC6 are expressed on both testicular and systemic DLBCL and that their presence or absence is associated with several clinical features—for example, the presence of one or more extranodal effusion or the treatment response.