KLHL11 and breast carcinoma: All Yo-PCD breast cancers carried at least one genetic variation leading to the overexpression of Yo antigens.471 Anti-Kelch-like protein 11 (KLHL11) paraneoplastic encephalitis is commonly seen in testicular germ cell tumors.464,472 A retrospective identification of 31 KLHL11 IgG-positive cases was conducted, and human leukocyte antigen typing and assessment of KLHL11-specific T cell responses were performed.