PMID- 29301152 OWN - NLM STAT- MEDLINE DCOM- 20191008 LR - 20191008 IS - 1439-1899 (Electronic) IS - 0174-304X (Linking) VI - 49 IP - 3 DP - 2018 Jun TI - A 5-Year Follow-Up of Triple-Seronegative Myasthenia Gravis Successfully Treated with Tacrolimus Therapy. PG - 200-203 LID - 10.1055/s-0037-1618591 [doi] AB - Seronegative myasthenia gravis (MG) is a generalized form of MG that is diagnosed on the basis of clinical symptoms, electrophysiological testing, and pharmacological responses, in the absence of a seropositive status for anti-acetylcholine receptor (AChR) antibodies. Generalized MG that is seronegative for anti-AChR, anti-muscle-specific kinase (MuSK), and anti-low density lipoprotein receptor related protein 4 (Lrp4) antibodies is known as triple-seronegative MG. We here describe a case of triple-seronegative MG in an 8-year-old boy. His first symptom was dysphagia, at 3 years of age, and he subsequently developed ptosis, rhinolalia, and a waddling gait. A genetic analysis was conducted to exclude the possibility of congenital myasthenia syndrome due to the patient's resistance to steroid therapy. His condition was successfully managed with tacrolimus therapy over a 5-year follow-up period. Recently, several studies have reported the therapeutic utility of tacrolimus in juvenile seropositive MG; in contrast, a few reports have described tacrolimus treatment in cases of seronegative MG. Our findings suggest that tacrolimus therapy is a safe and effective option for the treatment of juvenile seronegative MG. CI - Georg Thieme Verlag KG Stuttgart . New York. FAU - Tozawa, Takenori AU - Tozawa T AD - Department of Pediatrics, Ayabe City Hospital, Ayabe, Japan. AD - Department of Pediatrics, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan. FAU - Nishimura, Akira AU - Nishimura A AD - Department of Neonatology, Japanese Red Cross Society Kyoto Daiichi Hospital, Kyoto, Japan. FAU - Ueno, Tamaki AU - Ueno T AD - Department of Pediatrics, Ayabe City Hospital, Ayabe, Japan. AD - Department of Pediatrics, Tokai Central Hospital, Kakamigahara, Japan. FAU - Kaneda, Daisuke AU - Kaneda D AD - Department of Pediatrics, Ayabe City Hospital, Ayabe, Japan. AD - Department of Pediatrics, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan. FAU - Miyanomae, Yuri AU - Miyanomae Y AD - Clinics of Kyoto City Child Well-being Center, Kyoto, Japan. FAU - Chiyonobu, Tomohiro AU - Chiyonobu T AD - Department of Pediatrics, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan. FAU - Morimoto, Masafumi AU - Morimoto M AD - Department of Pediatrics, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan. FAU - Hosoi, Hajime AU - Hosoi H AD - Department of Pediatrics, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan. LA - eng PT - Case Reports PT - Journal Article DEP - 20180104 PL - Germany TA - Neuropediatrics JT - Neuropediatrics JID - 8101187 RN - 0 (Immunosuppressive Agents) RN - WM0HAQ4WNM (Tacrolimus) SB - IM MH - Child MH - Follow-Up Studies MH - Humans MH - Immunosuppressive Agents/*therapeutic use MH - Male MH - Myasthenia Gravis/*drug therapy/genetics/physiopathology MH - Peripheral Nerves/drug effects/physiopathology MH - Tacrolimus/*therapeutic use COIS- The authors indicated no potential conflict of interest. EDAT- 2018/01/05 06:00 MHDA- 2019/10/09 06:00 CRDT- 2018/01/05 06:00 PHST- 2018/01/05 06:00 [pubmed] PHST- 2019/10/09 06:00 [medline] PHST- 2018/01/05 06:00 [entrez] AID - 10.1055/s-0037-1618591 [doi] PST - ppublish SO - Neuropediatrics. 2018 Jun;49(3):200-203. doi: 10.1055/s-0037-1618591. Epub 2018 Jan 4.