Variant 6-26443996-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_006994.5(BTN3A3):c.125C>T(p.Ala42Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000131 in 152,120 control chromosomes in the GnomAD database, with no homozygous occurrence. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Consequence

BTN3A3
NM_006994.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.575

Variant links:

Genes affected

BTN3A3 (HGNC:1140): (butyrophilin subfamily 3 member A3) The butyrophilin (BTN) genes are a group of major histocompatibility complex (MHC)-associated genes that encode type I membrane proteins with 2 extracellular immunoglobulin (Ig) domains and an intracellular B30.2 (PRYSPRY) domain. Three subfamilies of human BTN genes are located in the MHC class I region: the single-copy BTN1A1 gene (MIM 601610) and the BTN2 (e.g., BTN2A1; MIM 613590) and BTN3 (e.g., BNT3A3) genes, which have undergone tandem duplication, resulting in 3 copies of each (summary by Smith et al., 2010 [PubMed 20208008]).[supplied by OMIM, Nov 2010]

BTN3A3 links:

ENSG00000291336 (HGNC:):

ENSG00000291336 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BTN3A3	NM_006994.5 link	c.125C>T	p.Ala42Val	missense_variant	4/11	ENST00000244519.7	NP_008925.1	O00478-1A0A024R042
BTN3A3	NM_197974.3 link	c.-2C>T		5_prime_UTR_variant	4/10		NP_932078.2	O00478-2
BTN3A3	NM_001242803.2 link	c.-2C>T		5_prime_UTR_variant	2/6		NP_001229732.1	O00478

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BTN3A3	ENST00000244519.7 link	c.125C>T	p.Ala42Val	missense_variant	4/11	1	NM_006994.5	ENSP00000244519.2		O00478-1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152120

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152120

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74312

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 28, 2024

The c.125C>T (p.A42V) alteration is located in exon 4 (coding exon 2) of the BTN3A3 gene. This alteration results from a C to T substitution at nucleotide position 125, causing the alanine (A) at amino acid position 42 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_addAF

Benign

-0.052

BayesDel_noAF

Benign

-0.31

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.23

.;T;.

Eigen

Benign

-0.094

Eigen_PC

Benign

-0.26

FATHMM_MKL

Benign

0.34

LIST_S2

Uncertain

0.89

D;D;D

M_CAP

Benign

0.0072

MetaRNN

Uncertain

0.50

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.4

.;L;.

PrimateAI

Benign

0.42

PROVEAN

Uncertain

-3.2

D;N;D

REVEL

Uncertain

0.30

Sift

Benign

0.13

T;T;D

Sift4G

Benign

0.16

T;T;T

Polyphen

1.0

.;D;.

Vest4

0.27

MutPred

0.74

Gain of sheet (P = 0.1451);Gain of sheet (P = 0.1451);Gain of sheet (P = 0.1451);

MVP

0.73

MPC

2.4

ClinPred

0.75

GERP RS

1.9

Varity_R

0.11

gMVP

0.60

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over