Table 1. Detailed count of interspersed and simple repeats at the breakpoints.

Family	Repeat	Count	Total
SINE	Alu S	17	27
	Alu J	4
	Alu Y	3
	MIR	3
LINE	L1	17	20
	L2	3
LTR	LTR	8	8
SIMPLE	(AT)n	6	11
	(CA)n	2
	Other simple	3
Other	SVA	1	5
	HERVL	1
	Charlie	1
	Tigger 3b	1
	HSMAR 2	1

The regions that were analyzed for repeat content extended for 500 bp on each side of the breakpoint site. Only repeats at a distance <150 bp were counted and reported in this table and in Table S2.