TABLE 9.

Summary of infant gut microbiome biomarkers outcomes across neurodevelopmental domains (N = 13)

Infant gut microbiome biomarker genus	Alpha diversity	Beta diversity	Aquificae	Firmicutes	Bacteroidetes	Actinobacteria	Proteobacteria	Verrucomicrobia	Coriobacteriaceae
# Studies	42	5	1	51	11	14	13	1	2
C	5↓, 10–	1–		21–	5–	1↑, 3–	3–
L	1↓			1↓, 3–	1–	1–	2–
M	1↓, 6–	1–		19–	4–	4–	3–
E	2↑, 11↓	1↑, 2↓		12↓, 4–	1↓, 1–	1↕, 1↑, 3↓, 1–	1↓, 2–
S	2–			1↓, 3–			1↑, 4–	1–	1–
T	5↑, 2↓, 7–	1↑	1–	3↑, 9–	2↑, 1↓, 2–	1↑, 3–	1↑, 1↓, 1–		1↓

Note: C, cognitive domain; L, language domain; M, motor domain; A, adaptive behavior domain; E, emotional domain; S, social domain; T, temperament.