4-102537668-A-C

Variant names:

• chr4-102537668-A-C
• rs230526
• NM_003998.4:c.160-190A>C

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_003998.4(NFKB1):​c.160-190A>C variant causes a intron 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: NFKB1 NM_003998.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.282
• Publications: 25 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: STRONG, MODERATE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae)
• common variable immunodeficiency

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003998.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NFKB1	NM_003998.4	MANE Select	c.160-190A>C		intron	N/A	NP_003989.2
	NFKB1	NM_001382625.1		c.160-190A>C		intron	N/A	NP_001369554.1	P19838-2
	NFKB1	NM_001382626.1		c.160-190A>C		intron	N/A	NP_001369555.1	P19838-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NFKB1	ENST00000226574.9	TSL:1 MANE Select	c.160-190A>C		intron	N/A	ENSP00000226574.4	P19838-2
	NFKB1	ENST00000394820.8	TSL:1	c.157-190A>C		intron	N/A	ENSP00000378297.4	P19838-1
	NFKB1	ENST00000505458.5	TSL:1	c.157-190A>C		intron	N/A	ENSP00000424790.1	P19838-1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 316064 Hom.: 0 Cov.: 3 AF XY: 0.00 AC XY: 0 AN XY: 168256

African (AFR) AF: 0.00 AC: 0 AN: 8928

American (AMR) AF: 0.00 AC: 0 AN: 12686

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 9626

East Asian (EAS) AF: 0.00 AC: 0 AN: 21230

South Asian (SAS) AF: 0.00 AC: 0 AN: 33618

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 21122

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 1382

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 189186

Other (OTH) AF: 0.00 AC: 0 AN: 18286

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	3.0
DANN	Benign	0.68
PhyloP100		0.28

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: rs230526; hg19: chr4-103458825;