rs1553247877

Variant names:

• chr1-209792277-G-A
• rs1553247877
• NM_006147.4:c.659C>T

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP2 PP3 PP5_Moderate

The NM_006147.4(IRF6):​c.659C>T​(p.Ser220Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: IRF6 NM_006147.4 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 8.79
• Publications: 0 publications found

Genes affected

IRF6 (HGNC:6121): (interferon regulatory factor 6) This gene encodes a member of the interferon regulatory transcription factor (IRF) family. Family members share a highly-conserved N-terminal helix-turn-helix DNA-binding domain and a less conserved C-terminal protein-binding domain. The encoded protein may be a transcriptional activator. Mutations in this gene can cause van der Woude syndrome and popliteal pterygium syndrome. Mutations in this gene are also associated with non-syndromic orofacial cleft type 6. Alternate splicing results in multiple transcript variants.[provided by RefSeq, May 2011]

IRF6 Gene-Disease associations (from GenCC):

• autosomal dominant popliteal pterygium syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, Labcorp Genetics (formerly Invitae)
• IRF6-related condition

  Inheritance: AD Classification: DEFINITIVE Submitted by: Ambry Genetics
• van der Woude syndrome 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
• popliteal pterygium syndrome

  Inheritance: AD Classification: STRONG Submitted by: Ambry Genetics
• tooth agenesis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• van der Woude syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• orofacial cleft 6, susceptibility to

  Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

ENSG00000289700 (HGNC:):

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the IRF6 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 45 curated pathogenic missense variants (we use a threshold of 10). The gene has 10 curated benign missense variants. Gene score misZ: 2.7435 (below the threshold of 3.09). Trascript score misZ: 3.8897 (above the threshold of 3.09). GenCC associations: The gene is linked to van der Woude syndrome 1, van der Woude syndrome, autosomal dominant popliteal pterygium syndrome, orofacial cleft 6, susceptibility to, tooth agenesis, IRF6-related condition, popliteal pterygium syndrome.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.75
• PP5: Variant 1-209792277-G-A is Pathogenic according to our data. Variant chr1-209792277-G-A is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 559856.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IRF6	NM_006147.4	c.659C>T	p.Ser220Phe	missense_variant	Exon 6 of 9	ENST00000367021.8	NP_006138.1
IRF6	NM_001206696.2	c.374C>T	p.Ser125Phe	missense_variant	Exon 4 of 7		NP_001193625.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IRF6	ENST00000367021.8	c.659C>T	p.Ser220Phe	missense_variant	Exon 6 of 9	1	NM_006147.4	ENSP00000355988.3
ENSG00000289700	ENST00000696133.1	c.659C>T	p.Ser220Phe	missense_variant	Exon 6 of 10			ENSP00000512426.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Van der Woude syndrome 1 Pathogenic:1

May 16, 2017

Equipe Genetique des Anomalies du Developpement, Université de Bourgogne

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.87
BayesDel_addAF	Pathogenic	0.49	D
BayesDel_noAF	Pathogenic	0.47
CADD	Pathogenic	29
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.44	.;T;T
Eigen	Uncertain	0.67
Eigen_PC	Pathogenic	0.73
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.95	D;D;D
M_CAP	Pathogenic	0.69	D
MetaRNN	Pathogenic	0.75	D;D;D
MetaSVM	Uncertain	0.77	D
MutationAssessor	Benign	1.8	.;L;.
PhyloP100		8.8
PrimateAI	Uncertain	0.74	T
PROVEAN	Benign	-1.8	N;N;N
REVEL	Pathogenic	0.68
Sift	Uncertain	0.016	D;T;T
Sift4G	Uncertain	0.014	D;D;.
Polyphen		1.0	.;D;.
Vest4		0.84
MutPred		0.48		.;Loss of disorder (P = 0.0649);Loss of disorder (P = 0.0649);
MVP		0.96
MPC		1.3
ClinPred		0.88	D
GERP RS		5.8
Varity_R		0.11
gMVP		0.57
Mutation Taster		=24/76	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs1553247877; hg19: chr1-209965622;