chr2-190976881-T-C

Variant names:

• chr2-190976881-T-C
• rs587777704
• NM_007315.4:c.2018A>G

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PP2 PP3 PP5

The NM_007315.4(STAT1):​c.2018A>G​(p.Lys673Arg) 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 Pathogenic (no stars). Synonymous variant affecting the same amino acid position (i.e. K673K) has been classified as Benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: STAT1 NM_007315.4 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 7.96
• Publications: 10 publications found

Genes affected

STAT1 (HGNC:11362): (signal transducer and activator of transcription 1) The protein encoded by this gene is a member of the STAT protein family. In response to cytokines and growth factors, STAT family members are phosphorylated by the receptor associated kinases, and then form homo- or heterodimers that translocate to the cell nucleus where they act as transcription activators. The protein encoded by this gene can be activated by various ligands including interferon-alpha, interferon-gamma, EGF, PDGF and IL6. This protein mediates the expression of a variety of genes, which is thought to be important for cell viability in response to different cell stimuli and pathogens. The protein plays an important role in immune responses to viral, fungal and mycobacterial pathogens. Mutations in this gene are associated with Immunodeficiency 31B, 31A, and 31C. [provided by RefSeq, Jun 2020]

STAT1 Gene-Disease associations (from GenCC):

• autoimmune enteropathy and endocrinopathy - susceptibility to chronic infections syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Illumina, ClinGen, PanelApp Australia, Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics
• Mendelian susceptibility to mycobacterial diseases due to partial STAT1 deficiency

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), PanelApp Australia, ClinGen, Ambry Genetics
• immunodeficiency 31B

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, PanelApp Australia, Orphanet, G2P, Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the STAT1 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 64 curated pathogenic missense variants (we use a threshold of 10). The gene has 19 curated benign missense variants. Gene score misZ: 5.1492 (above the threshold of 3.09). Trascript score misZ: 7.0181 (above the threshold of 3.09). GenCC associations: The gene is linked to immunodeficiency 31B, Mendelian susceptibility to mycobacterial diseases due to partial STAT1 deficiency, autoimmune enteropathy and endocrinopathy - susceptibility to chronic infections syndrome.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.811
• PP5: Variant 2-190976881-T-C is Pathogenic according to our data. Variant chr2-190976881-T-C is described in ClinVar as Pathogenic. ClinVar VariationId is 155907.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_007315.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	STAT1	NM_007315.4	MANE Select	c.2018A>G	p.Lys673Arg	missense	Exon 22 of 25	NP_009330.1	P42224-1
	STAT1	NM_001384891.1		c.2054A>G	p.Lys685Arg	missense	Exon 22 of 25	NP_001371820.1
	STAT1	NM_001384886.1		c.2018A>G	p.Lys673Arg	missense	Exon 22 of 25	NP_001371815.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	STAT1	ENST00000361099.8	TSL:1 MANE Select	c.2018A>G	p.Lys673Arg	missense	Exon 22 of 25	ENSP00000354394.4	P42224-1
	STAT1	ENST00000409465.5	TSL:1	c.2018A>G	p.Lys673Arg	missense	Exon 21 of 24	ENSP00000386244.1	P42224-1
	STAT1	ENST00000392322.7	TSL:1	c.2018A>G	p.Lys673Arg	missense	Exon 22 of 23	ENSP00000376136.3	P42224-2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Mendelian susceptibility to mycobacterial diseases due to partial STAT1 deficiency (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.18
BayesDel_addAF	Pathogenic	0.52	D
BayesDel_noAF	Pathogenic	0.51
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.65	D
Eigen	Uncertain	0.64
Eigen_PC	Pathogenic	0.68
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.98	D
M_CAP	Pathogenic	0.52	D
MetaRNN	Pathogenic	0.81	D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Uncertain	2.1	M
PhyloP100		8.0
PrimateAI	Uncertain	0.70	T
PROVEAN	Benign	-1.7	N
REVEL	Pathogenic	0.72
Sift	Benign	0.16	T
Sift4G	Benign	0.20	T
Polyphen		0.97	D
Vest4		0.88
MutPred		0.42		Loss of methylation at K673 (P = 0.0028)
MVP		1.0
MPC		1.9
ClinPred		0.96	D
GERP RS		5.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.56
gMVP		0.96
Mutation Taster		=1/99	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: rs587777704; hg19: chr2-191841607;