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rs777838022

Variant summary

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

The NM_019108.4(SMG9):c.1249C>T(p.Leu417Phe) variant causes a missense change. The variant allele was found at a frequency of 0.0000235 in 1,613,956 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000025 ( 0 hom. )

Consequence

SMG9
NM_019108.4 missense

Scores

2
11
6

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.10
Variant links:
Genes affected
SMG9 (HGNC:25763): (SMG9 nonsense mediated mRNA decay factor) This gene encodes a regulatory subunit of the SMG1 complex, which plays a critical role in nonsense-mediated mRNA decay (NMD). Binding of the encoded protein to the SMG1 complex kinase scaffold protein results in the inhibition of its kinase activity. Mutations in this gene cause a multiple congenital anomaly syndrome in human patients, characterized by brain malformation, congenital heart disease and other features. [provided by RefSeq, Jul 2016]

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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 UniProt
SMG9NM_019108.4 linkuse as main transcriptc.1249C>T p.Leu417Phe missense_variant 12/14 ENST00000270066.11

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
SMG9ENST00000270066.11 linkuse as main transcriptc.1249C>T p.Leu417Phe missense_variant 12/141 NM_019108.4 P1Q9H0W8-1
SMG9ENST00000601170.5 linkuse as main transcriptc.1249C>T p.Leu417Phe missense_variant 12/132 Q9H0W8-2
SMG9ENST00000594081.1 linkuse as main transcriptn.493C>T non_coding_transcript_exon_variant 2/24
SMG9ENST00000598860.1 linkuse as main transcript downstream_gene_variant 2

Frequencies

GnomAD3 genomes
AF:
0.0000131
AC:
2
AN:
152178
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000241
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
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:
0.0000239
AC:
6
AN:
251420
Hom.:
0
AF XY:
0.0000368
AC XY:
5
AN XY:
135890
show subpopulations
Gnomad AFR exome
AF:
0.0000615
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.000163
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000246
AC:
36
AN:
1461778
Hom.:
0
Cov.:
31
AF XY:
0.0000399
AC XY:
29
AN XY:
727202
show subpopulations
Gnomad4 AFR exome
AF:
0.0000597
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.000336
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000131
AC:
2
AN:
152178
Hom.:
0
Cov.:
32
AF XY:
0.0000135
AC XY:
1
AN XY:
74338
show subpopulations
Gnomad4 AFR
AF:
0.0000241
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.000207
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000658
Hom.:
0
Bravo
AF:
0.0000151
ExAC
AF:
0.0000412
AC:
5

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Inborn genetic diseases Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingAmbry GeneticsJan 23, 2017- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.45
BayesDel_addAF
Benign
-0.070
T
BayesDel_noAF
Uncertain
-0.080
Cadd
Uncertain
24
Dann
Uncertain
1.0
DEOGEN2
Benign
0.060
T;.
Eigen
Pathogenic
0.71
Eigen_PC
Pathogenic
0.70
FATHMM_MKL
Uncertain
0.94
D
LIST_S2
Uncertain
0.88
D;D
M_CAP
Benign
0.037
D
MetaRNN
Uncertain
0.55
D;D
MetaSVM
Uncertain
-0.24
T
MutationAssessor
Uncertain
2.3
M;M
MutationTaster
Benign
1.0
D
PrimateAI
Uncertain
0.63
T
PROVEAN
Benign
-1.9
N;.
REVEL
Benign
0.22
Sift
Uncertain
0.0090
D;.
Sift4G
Uncertain
0.025
D;D
Polyphen
1.0
D;.
Vest4
0.62
MVP
0.76
MPC
0.72
ClinPred
0.29
T
GERP RS
5.7
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.6
Varity_R
0.43
gMVP
0.59

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: rs777838022; hg19: chr19-44237566; API