chr4-102568446-A-G

Position:

• chr4-102568446-A-G

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_003998.4(NFKB1):​c.407+1311A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.666 in 151,948 control chromosomes in the GnomAD database, including 34,108 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 0.67 (34108 hom., cov: 31)
• Consequence: NFKB1 NM_003998.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.389

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]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.741 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NFKB1	NM_003998.4	c.407+1311A>G		intron_variant		ENST00000226574.9	NP_003989.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NFKB1	ENST00000226574.9	c.407+1311A>G		intron_variant		1	NM_003998.4	ENSP00000226574	P4

Frequencies

GnomAD3 genomes AF: 0.666 AC: 101105 AN: 151828 Hom.: 34067 Cov.: 31

Gnomad AFR AF: 0.748

Gnomad AMI AF: 0.704

Gnomad AMR AF: 0.560

Gnomad ASJ AF: 0.674

Gnomad EAS AF: 0.576

Gnomad SAS AF: 0.716

Gnomad FIN AF: 0.614

Gnomad MID AF: 0.753

Gnomad NFE AF: 0.650

Gnomad OTH AF: 0.669

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

GnomAD4 genome AF: 0.666 AC: 101189 AN: 151948 Hom.: 34108 Cov.: 31 AF XY: 0.663 AC XY: 49192 AN XY: 74252

Gnomad4 AFR AF: 0.748

Gnomad4 AMR AF: 0.559

Gnomad4 ASJ AF: 0.674

Gnomad4 EAS AF: 0.575

Gnomad4 SAS AF: 0.717

Gnomad4 FIN AF: 0.614

Gnomad4 NFE AF: 0.650

Gnomad4 OTH AF: 0.673

Alfa AF: 0.659 Hom.: 5329

Bravo AF: 0.663

Asia WGS AF: 0.634 AC: 2205 AN: 3476

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	5.9
DANN	Benign	0.68

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

Publications

LitVar

Other links and lift over

dbSNP: rs230498; hg19: chr4-103489603;