Antibodies against recoverin are mostly found in paraneoplastic, autoimmune retinopathy (Chen et al., 2021) and associated malignancies are mainly small cell lung carcinoma and occasionally gynecological tumors (Kaiser, 1999; Bataller and Dalmau, 2004); in this patient retinopathy and malignancies were ruled out. The gene discussed is RCVRN; the disease is small cell lung carcinoma.