chr19-45032733-C-A

Variant names:

• chr19-45032733-C-A
• rs745463649
• NM_006509.4:c.1191C>A

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PVS1 PM2 PP5

The NM_006509.4(RELB):​c.1191C>A​(p.Tyr397*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 31)
• Consequence: RELB NM_006509.4 stop_gained
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 2.57
• Publications: 3 publications found

Genes affected

RELB (HGNC:9956): (RELB proto-oncogene, NF-kB subunit) Enables RNA polymerase II cis-regulatory region sequence-specific DNA binding activity and protein kinase binding activity. Involved in lymphocyte differentiation and negative regulation of interferon-beta production. Located in cytosol and nucleoplasm. Part of chromatin; nucleus; and transcription repressor complex. Colocalizes with centrosome. Implicated in breast cancer and immunodeficiency 53. Biomarker of breast cancer and transitional cell carcinoma. [provided by Alliance of Genome Resources, Apr 2022]

RELB Gene-Disease associations (from GenCC):

• immunodeficiency 53

  Inheritance: AR, Unknown Classification: LIMITED Submitted by: ClinGen, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Pathogenic. The variant received 11 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 19-45032733-C-A is Pathogenic according to our data. Variant chr19-45032733-C-A is described in ClinVar as Pathogenic. ClinVar VariationId is 430895.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006509.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RELB	NM_006509.4	MANE Select	c.1191C>A	p.Tyr397*	stop_gained	Exon 9 of 12	NP_006500.2
	RELB	NM_001411087.1		c.1182C>A	p.Tyr394*	stop_gained	Exon 8 of 11	NP_001398016.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RELB	ENST00000221452.13	TSL:1 MANE Select	c.1191C>A	p.Tyr397*	stop_gained	Exon 9 of 12	ENSP00000221452.7
	RELB	ENST00000505236.2	TSL:5	c.1182C>A	p.Tyr394*	stop_gained	Exon 8 of 11	ENSP00000423287.1
	RELB	ENST00000589972.1	TSL:3	c.24C>A	p.Tyr8*	stop_gained	Exon 1 of 2	ENSP00000468460.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 31

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Immunodeficiency 53 Pathogenic:1

Sep 19, 2025

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.58	D
BayesDel_noAF	Pathogenic	0.60
CADD	Pathogenic	43
DANN	Uncertain	1.0
Eigen	Pathogenic	0.80
Eigen_PC	Uncertain	0.66
FATHMM_MKL	Pathogenic	0.97	D
PhyloP100		2.6
Vest4		0.96
GERP RS		4.2
PromoterAI		-0.0019	Neutral
Mutation Taster		=0/200	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.35		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.35		Position offset: -4

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs745463649; hg19: chr19-45535991;