19-49661965-A-G

Position:

• chr19-49661965-A-G

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_001571.6(IRF3):​c.965T>C​(p.Leu322Pro) variant causes a missense change. 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 Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: IRF3 NM_001571.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.25

Genes affected

IRF3 (HGNC:6118): (interferon regulatory factor 3) This gene encodes a member of the interferon regulatory transcription factor (IRF) family. The encoded protein is found in an inactive cytoplasmic form that upon serine/threonine phosphorylation forms a complex with CREBBP. This complex translocates to the nucleus and activates the transcription of interferons alpha and beta, as well as other interferon-induced genes. The protein plays an important role in the innate immune response against DNA and RNA viruses. Mutations in this gene are associated with Encephalopathy, acute, infection-induced, herpes-specific, 7. [provided by RefSeq, Sep 2020]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.983

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IRF3	NM_001571.6	c.965T>C	p.Leu322Pro	missense_variant	6/8	ENST00000377139.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IRF3	ENST00000377139.8	c.965T>C	p.Leu322Pro	missense_variant	6/8	1	NM_001571.6	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 14, 2022

The c.965T>C (p.L322P) alteration is located in exon 6 (coding exon 5) of the IRF3 gene. This alteration results from a T to C substitution at nucleotide position 965, causing the leucine (L) at amino acid position 322 to be replaced by a proline (P). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.56
BayesDel_addAF	Pathogenic	0.37	D
BayesDel_noAF	Pathogenic	0.29
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.69	D;D;.;.;D;D;D;D;D
Eigen	Uncertain	0.45
Eigen_PC	Uncertain	0.30
FATHMM_MKL	Uncertain	0.83	D
LIST_S2	Benign	0.78	T;.;T;T;.;T;.;.;.
M_CAP	Pathogenic	0.47	D
MetaRNN	Pathogenic	0.98	D;D;D;D;D;D;D;D;D
MetaSVM	Pathogenic	0.96	D
MutationAssessor	Uncertain	2.7	.;M;.;M;M;M;.;.;.
MutationTaster	Benign	0.94	D;N;N
PrimateAI	Benign	0.48	T
PROVEAN	Benign	-1.3	N;D;.;.;D;.;.;.;.
REVEL	Pathogenic	0.75
Sift	Benign	0.089	T;D;.;.;D;.;.;.;.
Sift4G	Uncertain	0.0030	D;D;D;D;D;D;D;D;D
Polyphen		1.0	.;D;.;.;D;D;.;.;.
Vest4		0.76
MutPred		0.87		.;Loss of stability (P = 0.0077);Loss of stability (P = 0.0077);Loss of stability (P = 0.0077);Loss of stability (P = 0.0077);Loss of stability (P = 0.0077);.;.;.;
MVP		0.99
MPC		1.5
ClinPred		0.88	D
GERP RS		4.3
Varity_R		0.89
gMVP		0.88

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-50165222;