chr6-137204432-G-T

Variant names:

• chr6-137204432-G-T
• rs387906572
• NM_000416.3:c.446C>A

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PVS1 PM2 PP5

The NM_000416.3(IFNGR1):​c.446C>A​(p.Ser149*) variant causes a stop gained change involving the alteration of a non-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). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: IFNGR1 NM_000416.3 stop_gained
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 0.368
• Publications: 5 publications found

Genes affected

IFNGR1 (HGNC:5439): (interferon gamma receptor 1) This gene (IFNGR1) encodes the ligand-binding chain (alpha) of the gamma interferon receptor. Human interferon-gamma receptor is a heterodimer of IFNGR1 and IFNGR2. A genetic variation in IFNGR1 is associated with susceptibility to Helicobacter pylori infection. In addition, defects in IFNGR1 are a cause of mendelian susceptibility to mycobacterial disease, also known as familial disseminated atypical mycobacterial infection. [provided by RefSeq, Jul 2008]

IFNGR1 Gene-Disease associations (from GenCC):

• autosomal dominant mendelian susceptibility to mycobacterial diseases due to partial IFNgammaR1 deficiency

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics
• immunodeficiency 27A

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
• autosomal recessive Mendelian susceptibility to mycobacterial diseases due to partial IFNgammaR1 deficiency

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• Mendelian susceptibility to mycobacterial diseases due to complete IFNgammaR1 deficiency

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 11 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 6-137204432-G-T is Pathogenic according to our data. Variant chr6-137204432-G-T is described in ClinVar as Pathogenic. ClinVar VariationId is 17942.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000416.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	IFNGR1	NM_000416.3	MANE Select	c.446C>A	p.Ser149*	stop_gained	Exon 4 of 7	NP_000407.1
	IFNGR1	NM_001363526.1		c.416C>A	p.Ser139*	stop_gained	Exon 5 of 8	NP_001350455.1
	IFNGR1	NM_001363527.1		c.323C>A	p.Ser108*	stop_gained	Exon 4 of 7	NP_001350456.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	IFNGR1	ENST00000367739.9	TSL:1 MANE Select	c.446C>A	p.Ser149*	stop_gained	Exon 4 of 7	ENSP00000356713.5
	IFNGR1	ENST00000414770.6	TSL:3	c.416C>A	p.Ser139*	stop_gained	Exon 5 of 8	ENSP00000394230.2
	IFNGR1	ENST00000646036.1		c.416C>A	p.Ser139*	stop_gained	Exon 5 of 8	ENSP00000496387.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Immunodeficiency 27A Pathogenic:1

Dec 26, 1996

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.60	D
BayesDel_noAF	Uncertain	0.12
CADD	Pathogenic	26
DANN	Benign	0.94
Eigen	Benign	-0.17
Eigen_PC	Benign	-0.51
FATHMM_MKL	Benign	0.026	N
PhyloP100		0.37
Vest4		0.83
GERP RS		0.47
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Mutation Taster		=2/198	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: rs387906572; hg19: chr6-137525569;