rs113994138

chr17-42325037-TCAC-T

Variant summary

Our verdict is Pathogenic. Variant got 13 ACMG points: 13P and 0B. PM1 PM2 PM4_Supporting PP5_Very_Strong

The NM_139276.3(STAT3):c.1387_1389del(p.Val463del) variant causes a inframe deletion change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: STAT3 NM_139276.3 inframe_deletion
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:4 O:1
• Conservation: PhyloP100: 9.28

Genes affected

STAT3 (HGNC:11364): (signal transducer and activator of transcription 3) 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. This protein is activated through phosphorylation in response to various cytokines and growth factors including IFNs, EGF, IL5, IL6, HGF, LIF and BMP2. This protein mediates the expression of a variety of genes in response to cell stimuli, and thus plays a key role in many cellular processes such as cell growth and apoptosis. The small GTPase Rac1 has been shown to bind and regulate the activity of this protein. PIAS3 protein is a specific inhibitor of this protein. This gene also plays a role in regulating host response to viral and bacterial infections. Mutations in this gene are associated with infantile-onset multisystem autoimmune disease and hyper-immunoglobulin E syndrome. [provided by RefSeq, Aug 2020]

ACMG classification

Verdict is Pathogenic. Variant got 13 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 3 uncertain in NM_139276.3
• PM2: Very rare variant in population databases, with high coverage
• PM4: Nonframeshift variant in NON repetitive region in NM_139276.3. Strenght limited to Supporting due to length of the change: 1aa.
• PP5: Variant 17-42325037-TCAC-T is Pathogenic according to our data. Variant chr17-42325037-TCAC-T is described in ClinVar as [Pathogenic]. Clinvar id is 18303.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
STAT3	NM_139276.3	c.1387_1389del	p.Val463del	inframe_deletion	16/24	ENST00000264657.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
STAT3	ENST00000264657.10	c.1387_1389del	p.Val463del	inframe_deletion	16/24	1	NM_139276.3	A1

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:4 Other:1

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Hyper-IgE recurrent infection syndrome 1, autosomal dominant Pathogenic:2 Other:1

Pathogenic, no assertion criteria provided	literature only	OMIM	Oct 18, 2007	- -
not provided, no classification provided	literature only	GeneReviews	-	- -
Pathogenic, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Aug 05, 2022	Variant summary: STAT3 c.1387_1389delGTG (p.Val463del) results in an in-frame deletion that removes Val463 from the DNA-binding domain of the encoded protein. The variant was absent in 251120 control chromosomes (gnomAD). c.1387_1389delGTG has been reported in the literature in multiple heterozygous individuals affected with Hyper IgE Syndrome, including several cases where it was confirmed to be a de novo variant (e.g. Minegishi_2007, Giacomelli_2011, Heimall_2011). These data indicate that the variant is very likely to be associated with disease. Furthermore, experimental studies have shown that the variant has a dominant-negative effect on wild-type STAT3 and diminished DNA-binding activity of STAT3 (e.g. Minegishi_2007, Okada_2018). Three clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 and all classified the variant as pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. -

STAT3 gain of function;C4721531:Hyper-IgE recurrent infection syndrome 1, autosomal dominant Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Invitae

Aug 09, 2022

Algorithms developed to predict the effect of variants on protein structure and function are not available or were not evaluated for this variant. For these reasons, this variant has been classified as Pathogenic. Experimental studies have shown that this variant affects STAT3 function (PMID: 17676033, 26384563, 27799162, 29402895). ClinVar contains an entry for this variant (Variation ID: 18303). This variant has been observed in individuals with hyper-IgE syndrome (PMID: 17676033, 21288777, 21792878, 22751495). It has also been observed to segregate with disease in related individuals. This variant is not present in population databases (gnomAD no frequency). This variant, c.1387_1389del, results in the deletion of 1 amino acid(s) of the STAT3 protein (p.Val463del), but otherwise preserves the integrity of the reading frame. -

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

GeneDx

Jul 14, 2016

The c.1387_1389delGTG variant has been published previosuly in association with hyper-IgE syndrome, including de novo occurrences (Minegishi et al., 2007; Woellner et al., 2010; Heimall et al., 2011; Giacomelli et al., 2011). The variant was not observed in approximately 6,500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. The variant results in an in-frame deletion of the Valine at residue 463, denoted p.Val463del. The deleted Valine is a conserved residue located in the DNA-binding domain of STAT3 (Minegishi et al., 2007), and in silico analysis predicts this variant is probably damaging to the protein structure/function. Additionally, functional studies have shown that c.1387_1389delGTG results in impaired DNA binding and regulatory activity of the STAT3 protein (Minegishi et al., 2007; Xu et al., 2015). Therefore, we consider this variant to be pathogenic. -

Computational scores

Source: dbNSFP v4.3

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

LitVar

Other links and lift over

dbSNP: rs113994138; hg19: chr17-40477055;