Studies measuring cytokines in maternal serum samples. Red cell color indicates a positive association (p < 0.05) between the cytokine and the outcome, blue indicates an inverse association, grey indicates no association (p > 0.05), and white with strikethrough indicates that the cytokine was not measured. SCQ, Social Communication Questionnaire; SRS, Social Responsiveness Scale; IL-1α, Interleukin 1α; IL-1β, Interleukin 1β; IL-2, Interleukin 2; IL-4, Interleukin 4; IL-6, Interleukin 6; IL-7, Interleukin 7; IL-8, Interleukin 8; IL-10, Interleukin 10; IL-12p40, Interleukin 12p40; IL-12p70, Interleukin 12p70; IL-13, Interleukin 13; IL-16, Interleukin 16; IL-17, Interleukin-17; IL-17A, Interleukin-17A; GCSF, Granulocyte Colony-Stimulating Factor; GMCSF, Granulocyte Monocyte Colony-Stimulating Factor; IFN-γ, Interferon-γ; IP-10, Interferon gamma-induced protein 10; MCP-1, Monocyte Chemoattractant Protein 1; MIP-1α, Macrophage Inflammatory Protein 1α; MIP-1β, Macrophage Inflammatory Protein 1β; RANTES, Regulated on Activation, Normal T-cell Expressed and Secreted; sIL-2Rα, Soluble Interleukin 2 Receptor-Alpha; TARC, Thymus and Activation Regulated Chemokine; TNF-α, Tumor Necrosis Factor α.