16-50697186-T-C

Variant names:

• chr16-50697186-T-C
• rs139485985
• ENST00000532206.1:n.47T>C

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The NM_001370466.1(NOD2):​c.-8-2302T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0003 in 1,448,276 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.0015 (2 hom., cov: 32)
  • Exomes 𝑓: 0.00015 (1 hom.)
• Consequence: NOD2 NM_001370466.1 intron
• Clinical Significance: Benign/Likely benign criteria provided, single submitter B:2
• Conservation: PhyloP100: 1.52
• Publications: 0 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: Benign. The variant received -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BP6: Variant 16-50697186-T-C is Benign according to our data. Variant chr16-50697186-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 319420.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00154 (235/152330) while in subpopulation AFR AF = 0.00548 (228/41582). AF 95% confidence interval is 0.0049. There are 2 homozygotes in GnomAd4. There are 111 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
• BS2: High AC in GnomAd4 at 235 AD,Unknown gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NOD2	NM_001370466.1	c.-8-2302T>C		intron_variant	Intron 1 of 11	ENST00000647318.2	NP_001357395.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NOD2	ENST00000647318.2	c.-8-2302T>C		intron_variant	Intron 1 of 11		NM_001370466.1	ENSP00000495993.1

Frequencies

GnomAD3 genomes AF: 0.00154 AC: 235 AN: 152212 Hom.: 2 Cov.: 32

Gnomad AFR AF: 0.00550

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000196

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000294

Gnomad OTH AF: 0.000958

GnomAD4 exome AF: 0.000154 AC: 200 AN: 1295946 Hom.: 1 Cov.: 19 AF XY: 0.000127 AC XY: 82 AN XY: 644590

African (AFR) AF: 0.00605 AC: 178 AN: 29432

American (AMR) AF: 0.000309 AC: 11 AN: 35564

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24534

East Asian (EAS) AF: 0.00 AC: 0 AN: 35328

South Asian (SAS) AF: 0.00 AC: 0 AN: 77078

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 48940

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4486

European-Non Finnish (NFE) AF: 0.00000101 AC: 1 AN: 986040

Other (OTH) AF: 0.000183 AC: 10 AN: 54544

GnomAD4 genome AF: 0.00154 AC: 235 AN: 152330 Hom.: 2 Cov.: 32 AF XY: 0.00149 AC XY: 111 AN XY: 74494

African (AFR) AF: 0.00548 AC: 228 AN: 41582

American (AMR) AF: 0.000196 AC: 3 AN: 15310

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5188

South Asian (SAS) AF: 0.00 AC: 0 AN: 4822

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10622

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

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68018

Other (OTH) AF: 0.000948 AC: 2 AN: 2110

Alfa AF: 0.00148 Hom.: 0

Bravo AF: 0.00194

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

Submissions by phenotype

Inflammatory bowel disease 1 Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Blau syndrome Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	6.4
DANN	Benign	0.51
PhyloP100		1.5
PromoterAI		-0.010	Neutral

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: rs139485985; hg19: chr16-50731097;