Table 1.

Subgroup classification and available number of data sets.

Psychotic CSF-collective	Number of patients
(1) Schizophreniform syndrome group	132
Schizophrenia	104
Delusional disorder	4
Acute polymorphic psychotic disorder	18
Schizotypal disorder	2
Substance-induced psychosis	4
(2) Schizoaffective syndrome group	43
(3) Psychotic syndromes in the context of other disorders	5*
Diagnostic measurements	Number of samples
CSF basic diagnostics (white blood cell count, protein concentration, albumin quotient, and intrathecal immunoglobulin synthesis)	180
Intracellular synaptic antigens (GAD, amphiphysin) and intracellular onconeural antigens (Yo, Hu, Ri, Cv2/CRMP5, Ma1, Ma2, SOX1)	142
Antibodies against neuronal cell surface antigens (NMDAR, AMPA-1/2-R, GABA-B-R, VGKC-complex)	96 (Freiburg) + 29**(Weatherall Institute of Molecular Medicine at the John Radcliffe Hospital [Oxford, United Kingdom])
Thyroid-antibodies
Anti-thyroid peroxidase antibodies	73
Anti-thyroglobulin antibodies	70
Thyroid-stimulating hormone receptor antibodies	33
Electroencephalography data sets	175
Magnetic resonance imaging data sets	152

^*Psychotic syndrome group in the context of other disorders is consisting of (1) Morbus Wilson, (2) presumed viral encephalitis, (3) prodromal symptoms of derealization and depersonalization, (4) prodromal symptoms within the framework of autistic spectrum disorder, and (5) acute state of confusion with psychotic symptoms.

^**Only NMDAR and VGKC-complex antibodies. GAD, glutamic acid decarboxylase; Yo/ Hu/ Ri, abbreviations of first patients' name; Cv2/CRMP5, anti-collapsin response-mediator protein; Ma1/ Ma2, 37 and 40 kDa neuronal proteins; SOX1, sry-like high-mobility group box 1; NMDAR, N-methyl-D-aspartat-receptor; AMPA-1/2-R, α-Amino-3-hydroxy-5-methyl-4-isoxazole-propionic acid receptor; GABA-B-R, γ-aminobutyric acid receptor; VGKC-complex, voltage gated potassium channels complex.