Table 1

Summary of identified XIAP variants

	Nucleotide sequence	Exon location	Protein sequence	Gender	Zygosity	IBD type	Age at disease onset (years)
Patient 1	c.295G>T	2	E99X	Male	Hemizygous	CD	0.75
Patient 2	c.115G>T	2	G39C	Male	Hemizygous	CD	13
Patient 3	c.890A>C	3	K297T	Male	Hemizygous	CD	15
Patient 4	c.968G>A	3	W323X	Male	Hemizygous	CD	16