2-113059473-T-C

Variant names:

• chr2-113059473-T-C
• rs1685595982
• NM_012275.3:c.29+6T>C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_012275.3(IL36RN):​c.29+6T>C variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,574 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: IL36RN NM_012275.3 splice_region, intron
• Scores: Splicing: ADA: 0.9567
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.40

Genes affected

IL36RN (HGNC:15561): (interleukin 36 receptor antagonist) The protein encoded by this gene is a member of the interleukin 1 cytokine family. This cytokine was shown to specifically inhibit the activation of NF-kappaB induced by interleukin 1 family, member 6 (IL1F6). This gene and eight other interleukin 1 family genes form a cytokine gene cluster on chromosome 2. Two alternatively spliced transcript variants encoding the same protein have been reported. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.38).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IL36RN	NM_012275.3	c.29+6T>C		splice_region_variant, intron_variant	Intron 2 of 4	ENST00000393200.7	NP_036407.1
IL36RN	NM_173170.1	c.29+6T>C		splice_region_variant, intron_variant	Intron 2 of 4		NP_775262.1
IL36RN	XM_047443918.1	c.29+6T>C		splice_region_variant, intron_variant	Intron 3 of 5		XP_047299874.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IL36RN	ENST00000393200.7	c.29+6T>C		splice_region_variant, intron_variant	Intron 2 of 4	1	NM_012275.3	ENSP00000376896.2
IL36RN	ENST00000346807.7	c.29+6T>C		splice_region_variant, intron_variant	Intron 2 of 4	1		ENSP00000259212.3
IL36RN	ENST00000437409.2	c.29+6T>C		splice_region_variant, intron_variant	Intron 1 of 3	1		ENSP00000409262.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461574 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727076

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Generalized pustular psoriasis Uncertain:1

Jul 14, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

ClinVar contains an entry for this variant (Variation ID: 1024914). Variants that disrupt the consensus splice site are a relatively common cause of aberrant splicing (PMID: 17576681, 9536098). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. This variant has not been reported in the literature in individuals affected with IL36RN-related conditions. This sequence change falls in intron 2 of the IL36RN gene. It does not directly change the encoded amino acid sequence of the IL36RN protein. It affects a nucleotide within the consensus splice site. This variant is not present in population databases (gnomAD no frequency). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.38
CADD	Benign	21
DANN	Benign	0.94

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.96
dbscSNV1_RF	Benign	0.70
SpliceAI score (max)		0.67		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.67		Position offset: 37
DS_DL_spliceai		0.34		Position offset: -6

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs1685595982; hg19: chr2-113817050;