16-50711419-AGG-AGGG

Variant names:

• chr16-50711419-A-AG
• rs754761524
• NM_001370466.1:c.1434dupG

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 8P and 4B. PVS1 BS2

The NM_022162.3(NOD2):​c.1515dupG​(p.Ser506ValfsTer73) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000502 in 1,613,460 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: 𝑓 0.000033 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000052 (0 hom.)
• Consequence: NOD2 NM_022162.3 frameshift
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -2.91
• Publications: 6 publications found

Genes affected

NOD2 (HGNC:5331): (nucleotide binding oligomerization domain containing 2) This gene is a member of the Nod1/Apaf-1 family and encodes a protein with two caspase recruitment (CARD) domains and six leucine-rich repeats (LRRs). The protein is primarily expressed in the peripheral blood leukocytes. It plays a role in the immune response to intracellular bacterial lipopolysaccharides (LPS) by recognizing the muramyl dipeptide (MDP) derived from them and activating the NFKB protein. Mutations in this gene have been associated with Crohn disease and Blau syndrome. Alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, Jun 2014]

NOD2 Gene-Disease associations (from GenCC):

• Blau syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Orphanet, Genomics England PanelApp, G2P, Illumina, Labcorp Genetics (formerly Invitae)
• inflammatory bowel disease 1

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

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• BS2: High AC in GnomAd4 at 5 AD,Unknown gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_022162.3. 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
	NOD2	NM_001370466.1	MANE Select	c.1434dupG	p.Ser479ValfsTer73	frameshift	Exon 4 of 12	NP_001357395.1
	NOD2	NM_022162.3		c.1515dupG	p.Ser506ValfsTer73	frameshift	Exon 4 of 12	NP_071445.1
	NOD2	NM_001293557.2		c.1434dupG	p.Ser479ValfsTer73	frameshift	Exon 3 of 11	NP_001280486.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NOD2	ENST00000647318.2	MANE Select	c.1434dupG	p.Ser479ValfsTer73	frameshift	Exon 4 of 12	ENSP00000495993.1
	NOD2	ENST00000300589.6	TSL:1	c.1515dupG	p.Ser506ValfsTer73	frameshift	Exon 4 of 12	ENSP00000300589.2
	NOD2	ENST00000951248.1		c.1434dupG	p.Ser479ValfsTer73	frameshift	Exon 4 of 12	ENSP00000621307.1

Frequencies

GnomAD3 genomes AF: 0.0000329 AC: 5 AN: 152124 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000654

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000415

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000321 AC: 8 AN: 249606 AF XY: 0.0000370

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000444

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000520 AC: 76 AN: 1461218 Hom.: 0 Cov.: 34 AF XY: 0.0000481 AC XY: 35 AN XY: 726910

African (AFR) AF: 0.0000299 AC: 1 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.0000504 AC: 2 AN: 39700

South Asian (SAS) AF: 0.0000927 AC: 8 AN: 86258

European-Finnish (FIN) AF: 0.0000569 AC: 3 AN: 52758

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000522 AC: 58 AN: 1112004

Other (OTH) AF: 0.0000662 AC: 4 AN: 60390

GnomAD4 genome AF: 0.0000328 AC: 5 AN: 152242 Hom.: 0 Cov.: 33 AF XY: 0.0000537 AC XY: 4 AN XY: 74448

African (AFR) AF: 0.0000241 AC: 1 AN: 41546

American (AMR) AF: 0.0000654 AC: 1 AN: 15300

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5180

South Asian (SAS) AF: 0.000415 AC: 2 AN: 4816

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10614

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68000

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Alfa AF: 0.0000364 Hom.: 0

Bravo AF: 0.0000416

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Regional enteritis;C5201146:Blau syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		-2.9
Mutation Taster		=41/159	disease causing (fs/PTC)

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: rs754761524; hg19: chr16-50745330; COSMIC: COSV56048878; COSMIC: COSV56048878;