chr4-102517282-A-G

Variant names:

• chr4-102517282-A-G
• rs3774938
• NM_003998.4:c.-7-8230A>G

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_003998.4(NFKB1):​c.-7-8230A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.404 in 151,924 control chromosomes in the GnomAD database, including 12,527 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.40 (12527 hom., cov: 32)
• Consequence: NFKB1 NM_003998.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.52
• Publications: 11 publications found

Genes affected

NFKB1 (HGNC:7794): (nuclear factor kappa B subunit 1) This gene encodes a 105 kD protein which can undergo cotranslational processing by the 26S proteasome to produce a 50 kD protein. The 105 kD protein is a Rel protein-specific transcription inhibitor and the 50 kD protein is a DNA binding subunit of the NF-kappa-B (NFKB) protein complex. NFKB is a transcription regulator that is activated by various intra- and extra-cellular stimuli such as cytokines, oxidant-free radicals, ultraviolet irradiation, and bacterial or viral products. Activated NFKB translocates into the nucleus and stimulates the expression of genes involved in a wide variety of biological functions. Inappropriate activation of NFKB has been associated with a number of inflammatory diseases while persistent inhibition of NFKB leads to inappropriate immune cell development or delayed cell growth. NFKB is a critical regulator of the immediate-early response to viral infection. Alternative splicing results in multiple transcript variants encoding different isoforms, at least one of which is proteolytically processed. [provided by RefSeq, Aug 2020]

NFKB1 Gene-Disease associations (from GenCC):

• immunodeficiency, common variable, 12

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae)
• common variable immunodeficiency

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.93).
• BA1: GnomAd4 highest subpopulation (AMR) allele frequency at 95% confidence interval = 0.465 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NFKB1	NM_003998.4	c.-7-8230A>G		intron_variant	Intron 1 of 23	ENST00000226574.9	NP_003989.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NFKB1	ENST00000226574.9	c.-7-8230A>G		intron_variant	Intron 1 of 23	1	NM_003998.4	ENSP00000226574.4
NFKB1	ENST00000505458.5	c.-7-8230A>G		intron_variant	Intron 1 of 23	1		ENSP00000424790.1

Frequencies

GnomAD3 genomes AF: 0.403 AC: 61213 AN: 151806 Hom.: 12487 Cov.: 32

Gnomad AFR AF: 0.415

Gnomad AMI AF: 0.366

Gnomad AMR AF: 0.473

Gnomad ASJ AF: 0.333

Gnomad EAS AF: 0.401

Gnomad SAS AF: 0.295

Gnomad FIN AF: 0.449

Gnomad MID AF: 0.290

Gnomad NFE AF: 0.386

Gnomad OTH AF: 0.384

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

GnomAD4 genome AF: 0.404 AC: 61310 AN: 151924 Hom.: 12527 Cov.: 32 AF XY: 0.406 AC XY: 30118 AN XY: 74216

African (AFR) AF: 0.416 AC: 17236 AN: 41424

American (AMR) AF: 0.474 AC: 7240 AN: 15274

Ashkenazi Jewish (ASJ) AF: 0.333 AC: 1154 AN: 3464

East Asian (EAS) AF: 0.401 AC: 2071 AN: 5162

South Asian (SAS) AF: 0.294 AC: 1414 AN: 4810

European-Finnish (FIN) AF: 0.449 AC: 4729 AN: 10524

Middle Eastern (MID) AF: 0.298 AC: 87 AN: 292

European-Non Finnish (NFE) AF: 0.386 AC: 26249 AN: 67966

Other (OTH) AF: 0.380 AC: 798 AN: 2100

Alfa AF: 0.402 Hom.: 1636

Bravo AF: 0.410

Asia WGS AF: 0.355 AC: 1231 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.93
CADD	Benign	0.14
DANN	Benign	0.40
PhyloP100		-1.5
Mutation Taster		=100/0	polymorphism (auto)

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: rs3774938; hg19: chr4-103438439;