Table II.

The sex chromosome aneuploidies identified

Individual	Sex chromosome aneuploidy	Disorder	Sex	Confirmed by karyotyping	Causative mechanism	Maternal age at birth	Paternal age at birth
LI_1 proband	XYY	SLI	Male	Yes	Paternal MII non-disjunction	33	39
LI_2 proband	XYY	SLI	Male	Yes	Paternal MII non-disjunction	32	32
LI_3 affected sib	XYY	SLI	Male	Yes	Paternal MII non-disjunction	37	33
SLI_4 proband	XXY	SLI	Male	ND	Maternal MII non-disjunction	34	35
SLI_5 proband	XXY	SLI	Male	ND	Maternal MII non-disjunction	NA	NA
SLI_6 proband	XXY	SLI	Male	ND	Paternal MI non-disjunction	NA	NA
DYS_7 proband	XXY	Dyslexia	Male	ND	NA	NA	NA
SLI_8 proband	XXX	SLI	Female	ND	Maternal MII non-disjunction	36	36
SLI_9 proband	XXX	SLI	Female	ND	Maternal MI non- disjunction	34	39
LI_10 proband	XXX	SLI	Female	Yes	Paternal MII non-disjunction	33	35
DYS_11 proband	XO	Dyslexia	Female	ND	NA	NA	NA
SLI_12 proband	XXY or XO/XY mosaicism	SLI	Male	ND	NA	26	26

LI, language impairment; SLI, specific language impairment; MII, meiosis II; ND, not done; NA, not available; MI, meiosis I.