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GeneBe

chr16-69284125-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_006750.4(SNTB2):​c.1226G>A​(p.Arg409Gln) variant causes a missense change. The variant allele was found at a frequency of 0.00000372 in 1,613,852 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 (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 30)
Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

SNTB2
NM_006750.4 missense

Scores

1
5
13

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.78
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]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.27771175).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
SNTB2NM_006750.4 linkuse as main transcriptc.1226G>A p.Arg409Gln missense_variant 5/7 ENST00000336278.9
SNTB2NR_172088.1 linkuse as main transcriptn.1315G>A non_coding_transcript_exon_variant 6/8
SNTB2NR_172089.1 linkuse as main transcriptn.1216G>A non_coding_transcript_exon_variant 5/7
SNTB2NR_172090.1 linkuse as main transcriptn.1018G>A non_coding_transcript_exon_variant 4/6

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
SNTB2ENST00000336278.9 linkuse as main transcriptc.1226G>A p.Arg409Gln missense_variant 5/71 NM_006750.4 P1Q13425-1
SNTB2ENST00000467311.5 linkuse as main transcriptc.*211G>A 3_prime_UTR_variant, NMD_transcript_variant 4/61 Q13425-2

Frequencies

GnomAD3 genomes
AF:
0.00000658
AC:
1
AN:
152000
Hom.:
0
Cov.:
30
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000656
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
AF:
0.00000342
AC:
5
AN:
1461852
Hom.:
0
Cov.:
31
AF XY:
0.00000275
AC XY:
2
AN XY:
727234
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:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000270
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.00000658
AC:
1
AN:
152000
Hom.:
0
Cov.:
30
AF XY:
0.0000135
AC XY:
1
AN XY:
74238
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.0000656
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
Alfa
AF:
0.0000624
Hom.:
0
Bravo
AF:
0.0000151

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.20
BayesDel_addAF
Uncertain
0.042
T
BayesDel_noAF
Benign
-0.18
CADD
Pathogenic
26
DANN
Uncertain
1.0
DEOGEN2
Benign
0.35
T
Eigen
Benign
0.039
Eigen_PC
Uncertain
0.22
FATHMM_MKL
Pathogenic
0.97
D
LIST_S2
Uncertain
0.92
D
M_CAP
Benign
0.057
D
MetaRNN
Benign
0.28
T
MetaSVM
Benign
-0.44
T
MutationAssessor
Benign
0.84
L
MutationTaster
Benign
0.98
D
PrimateAI
Uncertain
0.52
T
PROVEAN
Benign
-1.3
N
REVEL
Benign
0.26
Sift
Benign
0.14
T
Sift4G
Benign
0.27
T
Polyphen
0.31
B
Vest4
0.44
MutPred
0.56
Loss of MoRF binding (P = 0.0768);
MVP
0.78
MPC
1.1
ClinPred
0.80
D
GERP RS
5.3
Varity_R
0.20
gMVP
0.37

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

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

Other links and lift over

dbSNP: rs1965077353; hg19: chr16-69318028; COSMIC: COSV60350644; API