chr22-41925443-C-A

Variant names:

• chr22-41925443-C-A
• rs2146588362
• NM_052945.4:c.479G>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_052945.4(TNFRSF13C):​c.479G>T​(p.Ser160Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,460,098 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S160G) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: TNFRSF13C NM_052945.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 1.77
• Publications: 0 publications found

Genes affected

TNFRSF13C (HGNC:17755): (TNF receptor superfamily member 13C) B cell-activating factor (BAFF) enhances B-cell survival in vitro and is a regulator of the peripheral B-cell population. Overexpression of Baff in mice results in mature B-cell hyperplasia and symptoms of systemic lupus erythematosus (SLE). Also, some SLE patients have increased levels of BAFF in serum. Therefore, it has been proposed that abnormally high levels of BAFF may contribute to the pathogenesis of autoimmune diseases by enhancing the survival of autoreactive B cells. The protein encoded by this gene is a receptor for BAFF and is a type III transmembrane protein containing a single extracellular cysteine-rich domain. It is thought that this receptor is the principal receptor required for BAFF-mediated mature B-cell survival. [provided by RefSeq, Jul 2008]

TNFRSF13C Gene-Disease associations (from GenCC):

• immunodeficiency, common variable, 4

  Inheritance: AR, Unknown Classification: MODERATE, LIMITED Submitted by: ClinGen, PanelApp Australia, Labcorp Genetics (formerly Invitae)
• common variable immunodeficiency

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.24657434).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_052945.4. 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
	TNFRSF13C	NM_052945.4	MANE Select	c.479G>T	p.Ser160Ile	missense	Exon 3 of 3	NP_443177.1	Q5H8V1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TNFRSF13C	ENST00000291232.5	TSL:1 MANE Select	c.479G>T	p.Ser160Ile	missense	Exon 3 of 3	ENSP00000291232.3	Q96RJ3-1
	TNFRSF13C	ENST00000898406.1		c.563G>T	p.Ser188Ile	missense	Exon 3 of 3	ENSP00000568465.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1460098 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 726338

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

American (AMR) AF: 0.00 AC: 0 AN: 44722

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: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 51688

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5760

European-Non Finnish (NFE) AF: 0.00000270 AC: 3 AN: 1111984

Other (OTH) AF: 0.00 AC: 0 AN: 60376

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Immunodeficiency, common variable, 4 (1)
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.55
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.44
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.61	D
Eigen	Benign	-0.26
Eigen_PC	Benign	-0.13
FATHMM_MKL	Uncertain	0.80	D
LIST_S2	Benign	0.69	T
M_CAP	Benign	0.051	D
MetaRNN	Benign	0.25	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.8	L
PhyloP100		1.8
PrimateAI	Uncertain	0.57	T
PROVEAN	Pathogenic	-5.6	D
REVEL	Benign	0.041
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		0.0050	B
Vest4		0.47
MutPred		0.26		Loss of glycosylation at S160 (P = 0.0048)
MVP		0.043
MPC		2.1
ClinPred		0.99	D
GERP RS		3.2
Varity_R		0.72
gMVP		0.27
Mutation Taster		=87/13	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: rs2146588362; hg19: chr22-42321447;