PIK3C2A and glycogen storage disease VI: ANA: antinuclear antibody, CBC: complete blood count, CPK: creatine phosphokinase, CRP: c-reactive protein, CSF: cerebrospinal fluid, CT: computed tomography, DNA: deoxyribonucleic acid, EPP: electrophoresis of proteins, ESR: erythrocyte sedimentation rate, FBG: fasting blood glucose, HIV: Human immunodeficiency virus, LDH: lactate dehydrogenase, MRI: magnetic resonance imaging, SSA: Sjogren syndrome-A, SSB: Sjogren syndrome-B, TPHA: Treponema pallidum hemagglutination assay, VDRL: venereal disease research laboratory.