Table 1.

Phenotypic data for the 17 pairs of MZ twins.

Twin Pair ID	Sex	Age at Sampling	Genomic Ancestry	Twin 1 Phenotype	Twin 2 Phenotype	Discordance
T01	M	35	European	SCZ	MDD	Broad
T02	M	38	European	SAD	None	Narrow
T03	F	34	European	SCZ	None	Narrow
T05	M	25	East Asian	SAD	MDD	Broad
T06	F	65	European	SAD	None	Narrow
T07	F	61	European	BD	None	Narrow
T08	F	60	European	SAD	None	Narrow
T09	F	59	European	BD	None	Narrow
T10	M	58	European	SCZ	None	Narrow
T11	F	52	European	BD	None	Narrow
T12	M	50, 51	European	BD	None	Narrow
T13	M	48	European	SCZ	MDD	Broad
T14	M	50, 51	European	BD	None	Narrow
T15	M	43	European	SAD	MDD	Broad
T16	M	46	European	BD	None	Narrow
T17	F	45	European	BD	None	Narrow
T18	F	27	European	SAD	MDD	Broad

For the discordance, “broad” indicates that both samples have a diagnosis and “narrow” indicates that only one sample has a diagnosis.

SCZ schizophrenia, MDD major depressive disorder, SAD schizoaffective disorder, BD bipolar disorder.