rs2931761

Positions:

• chr3-112471290-G-C
• chr3-112471290-G-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_181780.4(BTLA):​c.469C>G​(p.Arg157Gly) variant causes a missense 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. 15/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R157S) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 31)
• Consequence: BTLA NM_181780.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.49

Genes affected

BTLA (HGNC:21087): (B and T lymphocyte associated) This gene encodes a member of the immunoglobulin superfamily. The encoded protein contains a single immunoglobulin (Ig) domain and is a receptor that relays inhibitory signals to suppress the immune response. Alternative splicing results in multiple transcript variants. Polymorphisms in this gene have been associated with an increased risk of rheumatoid arthritis. [provided by RefSeq, Aug 2011]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.052549243).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BTLA	NM_181780.4	c.469C>G	p.Arg157Gly	missense_variant	3/5	ENST00000334529.10	NP_861445.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BTLA	ENST00000334529.10	c.469C>G	p.Arg157Gly	missense_variant	3/5	1	NM_181780.4	ENSP00000333919.5
BTLA	ENST00000383680.4	c.404-1486C>G		intron_variant		1		ENSP00000373178.4

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 52

GnomAD4 genome Cov.: 31

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.048
BayesDel_addAF	Benign	-0.31	T
BayesDel_noAF	Benign	-0.69
CADD	Benign	0.93
DANN	Benign	0.89
DEOGEN2	Benign	0.12	T
Eigen	Benign	-1.5
Eigen_PC	Benign	-1.5
FATHMM_MKL	Benign	0.0046	N
LIST_S2	Benign	0.11	T
M_CAP	Benign	0.0030	T
MetaRNN	Benign	0.053	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.0	N
PrimateAI	Benign	0.22	T
PROVEAN	Benign	-0.24	N
REVEL	Benign	0.023
Sift	Benign	0.070	T
Sift4G	Benign	0.16	T
Polyphen		0.0	B
Vest4		0.090
MutPred		0.38		Loss of glycosylation at P152 (P = 0.0228);
MVP		0.30
MPC		0.79
ClinPred		0.033	T
GERP RS		-4.9
Varity_R		0.067
gMVP		0.38

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: rs2931761; hg19: chr3-112190137;