rs4648037

chr4-102583622-T-C

Variant summary

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

The NM_003998.4(NFKB1):c.927+665T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0566 in 152,282 control chromosomes in the GnomAD database, including 276 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 0.057 (276 hom., cov: 32)
• Consequence: NFKB1 NM_003998.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.453

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=-0.82).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0861 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NFKB1	NM_003998.4	c.927+665T>C		intron_variant		ENST00000226574.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NFKB1	ENST00000226574.9	c.927+665T>C		intron_variant		1	NM_003998.4	P4

Frequencies

GnomAD3 genomes AF: 0.0565 AC: 8603 AN: 152164 Hom.: 276 Cov.: 32

Gnomad AFR AF: 0.0884

Gnomad AMI AF: 0.0702

Gnomad AMR AF: 0.0350

Gnomad ASJ AF: 0.0118

Gnomad EAS AF: 0.0502

Gnomad SAS AF: 0.0338

Gnomad FIN AF: 0.0655

Gnomad MID AF: 0.0285

Gnomad NFE AF: 0.0452

Gnomad OTH AF: 0.0473

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

GnomAD4 genome AF: 0.0566 AC: 8616 AN: 152282 Hom.: 276 Cov.: 32 AF XY: 0.0564 AC XY: 4198 AN XY: 74464

Gnomad4 AFR AF: 0.0885

Gnomad4 AMR AF: 0.0349

Gnomad4 ASJ AF: 0.0118

Gnomad4 EAS AF: 0.0497

Gnomad4 SAS AF: 0.0344

Gnomad4 FIN AF: 0.0655

Gnomad4 NFE AF: 0.0452

Gnomad4 OTH AF: 0.0468

Alfa AF: 0.0494 Hom.: 18

Bravo AF: 0.0565

Asia WGS AF: 0.0480 AC: 165 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
Cadd	Benign	5.9
Dann	Benign	0.67

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: rs4648037; hg19: chr4-103504779;