Table 2

Characterisation of non-synonymous, stopgain and indel variants with an alternative allele frequency of <0.05 or not reported in 1000 genomes across 39 known IBD genes

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  • Novel variants are shown in grey.

  • Where a specific variant is present in a proband, this is indicated by a dot (.).

  • Where a specific variant is present in a proband and has a SIFT score of <0.05 this is indicated by a ◊.

  • *Indicates the first bp location of a 3-bp deletion.

  • †Indicates a dinucleotide variant (that for IL18RAP results in a codon change from CTG>AAG, resulting in p.L428K amino acid change).

  • ‡NR indicates variants that despite not being reported in dbSNP132 or 1000 genomes, are reported in dbSNP129 or seen in our in-house reference exomes and are therefore not characterised as novel.

  • B, benign; C, conservative; fi, frameshift insertion; MC, moderately conservative; MR, moderately radical; nd, non-frameshift deletion; NR, not reported; ns, non-synonymous; PoD, possibly damaging; PrD, probably damaging; R, radical; sg, stopgain; U, unknown.