RT Journal Article SR Electronic T1 Kelch-like Protein 11 (KLHL11) Antibodies in Children With Seizures of Undetermined Cause JF In Vivo JO In Vivo FD International Institute of Anticancer Research SP 351 OP 357 DO 10.21873/invivo.13445 VO 38 IS 1 A1 TZARTOS, JOHN A1 PECHLIVANIDOU, MARIA A1 BOSVELI, DESPOINA A1 NINOU, ELPINICKIE A1 YUCEER, HANDE A1 YALCIN, BEYZANUR A1 KUCUKALI, CEM ISMAIL A1 TUZUN, ERDEM A1 TZARTOS, SOCRATES A1 TURKDOGAN, DILSAD YR 2024 UL http://iv.iiarjournals.org/content/38/1/351.abstract AB Background/Aim: Kelch-like protein 11 (KLHL11)-antibody may be found in paraneoplastic neurological disorders presenting with epileptic seizures. The aim of this study was to investigate the prevalence and clinical significance of KLHL11-antibody in epilepsy. Patients and Methods: Sera of 42 pediatric and 59 adult patients with seizures of undetermined cause were screened using a cell-based assay. Results: KLHL11-antibody was found in three of 168 control patients with paraneoplastic neurological disorders and four pediatric patients (4-8-year-old, 2 boys/2 girls) with seizures of unknown cause presenting with myoclonic-atonic epilepsy, generalized epilepsy or childhood epilepsy with centrotemporal spikes. In these four cases, seizures continued for 2-7 months, responded promptly and favorably to conventional anti-seizure drugs and did not recur in follow-up durations ranging between 2-5 years. Patients had normal brain MRI findings and motor-mental development before and after seizures. KLHL11-antibody was not detected in adult epilepsy patients with undetermined cause, MOG antibody-positive patients and healthy controls. Conclusion: KLHL11-antibody may be detected in pediatric epilepsy patients with a relatively benign disease course.