chr6-32402952-G-A

Position:

chr6-32402952-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001304561.2(BTNL2):c.692C>T(p.Ser231Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000397 in 1,612,824 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 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)

Exomes 𝑓: 0.000042 ( 0 hom. )

Consequence

BTNL2
NM_001304561.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.94

Variant links:

Genes affected

BTNL2 (HGNC:1142): (butyrophilin like 2) This gene encodes a major histocompatibility complex, class II associated, type I transmembrane protein which belongs to the butyrophilin-like B7 family of immunoregulators. It is thought to be involved in immune surveillance, serving as a negative T-cell regulator by decreasing T-cell proliferation and cytokine release. The encoded protein contains an N-terminal signal peptide, two pairs of immunoglobulin-like domains, separated by a heptad peptide sequence, and a C-terminal transmembrane domain. Naturally occurring mutations in this gene are associated with sarcoidosis, rheumatoid arthritis, ulcerative colitis, inflammatory bowel disease, myositis, type 1 diabetes, systemic lupus erythematosus, acute coronary syndrome, and prostate cancer. [provided by RefSeq, May 2017]

BTNL2 links:

TSBP1-AS1 (HGNC:39756): (TSBP1 and BTNL2 antisense RNA 1)

TSBP1-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.091554105).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BTNL2	NM_001304561.2 linkuse as main transcript	c.692C>T	p.Ser231Leu	missense_variant	3/8	ENST00000454136.8	NP_001291490.1
TSBP1-AS1	NR_136245.1 linkuse as main transcript	n.303-2502G>A		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BTNL2	ENST00000454136.8 linkuse as main transcript	c.692C>T	p.Ser231Leu	missense_variant	3/8	5	NM_001304561.2	ENSP00000390613	P1
TSBP1-AS1	ENST00000645134.1 linkuse as main transcript	n.628-717G>A		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152186

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000327

AC:

AN:

244702

Hom.:

AF XY:

0.0000299

AC XY:

AN XY:

133574

show subpopulations

Gnomad AFR exome

AF:

0.0000664

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000659

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000459

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000425

AC:

AN:

1460520

Hom.:

Cov.:

AF XY:

0.0000427

AC XY:

AN XY:

726528

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000186

Gnomad4 FIN exome

AF:

0.0000765

Gnomad4 NFE exome

AF:

0.0000315

Gnomad4 OTH exome

AF:

0.000116

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152304

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74478

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000192

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000126

Hom.:

Bravo

AF:

0.0000189

ExAC

AF:

0.0000594

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

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

Aug 08, 2023

The c.692C>T (p.S231L) alteration is located in exon 3 (coding exon 3) of the BTNL2 gene. This alteration results from a C to T substitution at nucleotide position 692, causing the serine (S) at amino acid position 231 to be replaced by a leucine (L). 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

0.089

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.55

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.025

T;T

Eigen

Benign

-0.64

Eigen_PC

Benign

-0.67

FATHMM_MKL

Benign

0.16

M_CAP

Benign

0.0028

MetaRNN

Benign

0.092

T;T

MetaSVM

Benign

-0.93

MutationAssessor

Uncertain

2.7

.;M

MutationTaster

Benign

1.0

N;N;N;N;N;N;N

PrimateAI

Benign

0.38

PROVEAN

Benign

-1.8

.;N

REVEL

Benign

0.11

Sift

Benign

0.099

.;T

Sift4G

Uncertain

0.0070

D;D

Polyphen

0.041

.;B

Vest4

0.35

MVP

0.19

MPC

0.35

ClinPred

0.053

GERP RS

3.8

Varity_R

0.035

gMVP

0.49

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