rs773591883

Variant names:

• chr17-16952569-A-G
• rs773591883
• NM_012452.3:c.76T>C

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_012452.3(TNFRSF13B):​c.76T>C​(p.Trp26Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000219 in 1,461,852 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.000022 (0 hom.)
• Consequence: TNFRSF13B NM_012452.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.994
• Publications: 0 publications found

Genes affected

TNFRSF13B (HGNC:18153): (TNF receptor superfamily member 13B) The protein encoded by this gene is a lymphocyte-specific member of the tumor necrosis factor (TNF) receptor superfamily. It interacts with calcium-modulator and cyclophilin ligand (CAML). The protein induces activation of the transcription factors NFAT, AP1, and NF-kappa-B and plays a crucial role in humoral immunity by interacting with a TNF ligand. This gene is located within the Smith-Magenis syndrome region on chromosome 17. [provided by RefSeq, Jul 2008]

TNFRSF13B Gene-Disease associations (from GenCC):

• immunodeficiency, common variable, 2

  Inheritance: AD, AR Classification: DEFINITIVE, STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, ClinGen, G2P, Ambry Genetics
• common variable immunodeficiency

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.04995507).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TNFRSF13B	NM_012452.3	c.76T>C	p.Trp26Arg	missense_variant	Exon 2 of 5	ENST00000261652.7	NP_036584.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TNFRSF13B	ENST00000261652.7	c.76T>C	p.Trp26Arg	missense_variant	Exon 2 of 5	1	NM_012452.3	ENSP00000261652.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.0000239 AC: 6 AN: 251336 AF XY: 0.0000294

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000440

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.0000219 AC: 32 AN: 1461852 Hom.: 0 Cov.: 35 AF XY: 0.0000165 AC XY: 12 AN XY: 727222

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86250

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000288 AC: 32 AN: 1111994

Other (OTH) AF: 0.00 AC: 0 AN: 60392

GnomAD4 genome Cov.: 33

Alfa AF: 0.0000487 Hom.: 0

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Immunodeficiency, common variable, 2 Uncertain:1

Aug 24, 2021

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces tryptophan with arginine at codon 26 of the TNFRSF13B protein (p.Trp26Arg). The tryptophan residue is weakly conserved and there is a moderate physicochemical difference between tryptophan and arginine. This variant is present in population databases (rs773591883, ExAC 0.002%). This variant has not been reported in the literature in individuals affected with TNFRSF13B-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The arginine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Benign	-0.15	T
BayesDel_noAF	Benign	-0.32
CADD	Benign	13
DANN	Benign	0.48
DEOGEN2	Benign	0.0078	T;T
Eigen	Benign	-1.2
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.032	N
LIST_S2	Benign	0.27	T;T
M_CAP	Benign	0.010	T
MetaRNN	Benign	0.050	T;T
MetaSVM	Benign	-0.67	T
MutationAssessor	Benign	0.34	.;N
PhyloP100		0.99
PrimateAI	Benign	0.46	T
PROVEAN	Benign	-1.2	.;N
REVEL	Benign	0.21
Sift	Benign	0.54	.;T
Sift4G	Benign	0.91	T;T
Polyphen		0.0010	.;B
Vest4		0.13
MutPred		0.53		Gain of disorder (P = 0.0014);Gain of disorder (P = 0.0014);
MVP		0.23
MPC		0.012
ClinPred		0.016	T
GERP RS		-0.71
Varity_R		0.062
gMVP		0.19
Mutation Taster		=97/3	polymorphism

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: rs773591883; hg19: chr17-16855883;