Table 1.

Genetic variants associated with mental illness

	Autism	Schizophrenia	Bipolar disorder	Depression
Number of individuals in largest genetic sample to date	13,088 cases with autism spectrum disorders and 16,664 controls	36,989 cases with schizophrenia and 113,075 controls	7,481 cases with bipolar disorder and 9,250 controls	121,380 cases with depression and 338,101 controls
Number of genetic variants associated at genome‐wide level of statistical significance	4	128	18	17
Odds ratio of the most strongly associated genetic variant	1.17	1.21	1.15	1.05
Proportion of variance explained by common genetic variants across the genome	14%	23%	25%	5%