Inflammatory processes and schizophrenia: two independent lines of evidence from a study of twins discordant and concordant for schizophrenic disorders.

On the syndrome level, by contrast, our quantitative analysis revealed highly significant similarities ( p < 0.001) between the syndrome profiles of index cases of the “Schizophrenia Cluster” ( n = 136) and the syndrome profiles of their affected first-degree relatives ( n = 116) (Fig. 1 ).

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The other syndrome correlations did not reach statistical significance: “anergia” ( r = −0.1867), “incongruent affect” ( r = 0.1478), and “depressive syndrome” ( r = −0.1270).

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