Genetic Variant SNTB2:p.Lys205Arg (chr16-69245635-A-G) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_006750.4(SNTB2):c.614A>G(p.Lys205Arg) variant causes a missense change. The variant allele was found at a frequency of 0.00000752 in 1,461,816 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 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. K205T) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000075 ( 0 hom. )

Consequence

SNTB2
NM_006750.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.14

Publications

0 publications found

Variant links:

Genes affected

SNTB2 (HGNC:11169): (syntrophin beta 2) Dystrophin is a large, rod-like cytoskeletal protein found at the inner surface of muscle fibers. Dystrophin is missing in Duchenne Muscular Dystrophy patients and is present in reduced amounts in Becker Muscular Dystrophy patients. The protein encoded by this gene is a peripheral membrane protein found associated with dystrophin and dystrophin-related proteins. This gene is a member of the syntrophin gene family, which contains at least two other structurally-related genes. [provided by RefSeq, Jul 2008]

SNTB2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.26447988).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006750.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SNTB2	NM_006750.4	MANE Select	c.614A>G	p.Lys205Arg	missense	Exon 2 of 7	NP_006741.1	Q13425-1
SNTB2	NR_172088.1		n.703A>G		non_coding_transcript_exon	Exon 3 of 8
SNTB2	NR_172089.1		n.604A>G		non_coding_transcript_exon	Exon 2 of 7

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SNTB2	ENST00000336278.9	TSL:1 MANE Select	c.614A>G	p.Lys205Arg	missense	Exon 2 of 7	ENSP00000338191.4	Q13425-1
SNTB2	ENST00000467311.5	TSL:1	n.614A>G		non_coding_transcript_exon	Exon 2 of 6	ENSP00000436443.1	Q13425-2
SNTB2	ENST00000958019.1		c.614A>G	p.Lys205Arg	missense	Exon 2 of 7	ENSP00000628078.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000752

AC:

AN:

1461816

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

727202

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000989

AC:

AN:

1111956

Other (OTH)

AF:

0.00

AC:

AN:

60380

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.420

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.095

BayesDel_addAF

Benign

-0.033

BayesDel_noAF

Benign

-0.28

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.33

Eigen

Benign

0.18

Eigen_PC

Uncertain

0.29

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.87

M_CAP

Benign

0.016

MetaRNN

Benign

0.26

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.2

PhyloP100

7.1

PrimateAI

Uncertain

0.71

PROVEAN

Benign

-1.3

REVEL

Benign

0.19

Sift

Benign

0.53

Sift4G

Benign

0.64

Polyphen

0.87

Vest4

0.32

MutPred

0.37

Loss of ubiquitination at K205 (P = 0.0116)

MVP

0.80

MPC

0.33

ClinPred

0.81

GERP RS

4.6

Varity_R

0.088

gMVP

0.38

Mutation Taster

=89/11

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over