10-102399455-A-T

Position:

• chr10-102399455-A-T

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 3P and 4B. PM2 PP2 BP4_Strong

The NM_001322934.2(NFKB2):​c.1285A>T​(p.Thr429Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: NFKB2 NM_001322934.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -1.96

Genes affected

NFKB2 (HGNC:7795): (nuclear factor kappa B subunit 2) This gene encodes a subunit of the transcription factor complex nuclear factor-kappa-B (NFkB). The NFkB complex is expressed in numerous cell types and functions as a central activator of genes involved in inflammation and immune function. The protein encoded by this gene can function as both a transcriptional activator or repressor depending on its dimerization partner. The p100 full-length protein is co-translationally processed into a p52 active form. Chromosomal rearrangements and translocations of this locus have been observed in B cell lymphomas, some of which may result in the formation of fusion proteins. There is a pseudogene for this gene on chromosome 18. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2013]

ACMG classification

Verdict is Likely_benign. Variant got -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), NFKB2. . Gene score misZ 3.9376 (greater than the threshold 3.09). Trascript score misZ 3.5752 (greater than threshold 3.09). GenCC has associacion of gene with common variable immunodeficiency, deficiency in anterior pituitary function - variable immunodeficiency syndrome, immunodeficiency, common variable, 10.
• BP4: Computational evidence support a benign effect (MetaRNN=0.054009855).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NFKB2	NM_001322934.2	c.1285A>T	p.Thr429Ser	missense_variant	13/23	ENST00000661543.1	NP_001309863.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NFKB2	ENST00000661543.1	c.1285A>T	p.Thr429Ser	missense_variant	13/23		NM_001322934.2	ENSP00000499294	P5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1360500 Hom.: 0 Cov.: 35 AF XY: 0.00 AC XY: 0 AN XY: 668208

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Immunodeficiency, common variable, 10 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 19, 2017

This sequence change replaces threonine with serine at codon 429 of the NFKB2 protein (p.Thr429Ser). The threonine residue is weakly conserved and there is a small physicochemical difference between threonine and serine. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site, but this prediction has not been confirmed by published transcriptional studies. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The serine amino acid residue is found in multiple mammalian species, suggesting that this missense change does not adversely affect protein function. These predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with NFKB2-related disease. While this variant is not present in population databases, the frequency information is unreliable, as metrics indicate poor data quality at this position in the ExAC database. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.067
BayesDel_addAF	Benign	-0.33	T
BayesDel_noAF	Benign	-0.71
CADD	Benign	0.098
DANN	Benign	0.59
DEOGEN2	Benign	0.067	.;T;.
Eigen	Benign	-1.8
Eigen_PC	Benign	-1.9
FATHMM_MKL	Benign	0.017	N
LIST_S2	Benign	0.30	T;T;.
M_CAP	Benign	0.0029	T
MetaRNN	Benign	0.054	T;T;T
MetaSVM	Benign	-0.97	T
MutationAssessor	Benign	0.55	N;N;N
MutationTaster	Benign	1.0	N;N;N;N
PrimateAI	Uncertain	0.65	T
PROVEAN	Benign	0.24	N;N;N
REVEL	Benign	0.010
Sift	Benign	0.87	T;T;T
Sift4G	Benign	0.80	T;T;T
Polyphen		0.0	.;B;.
Vest4		0.15
MutPred		0.15		Loss of glycosylation at S427 (P = 0.1426);Loss of glycosylation at S427 (P = 0.1426);Loss of glycosylation at S427 (P = 0.1426);
MVP		0.37
MPC		0.55
ClinPred		0.066	T
GERP RS		-6.0
Varity_R		0.031
gMVP		0.15

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs1405716353; hg19: chr10-104159212;