rs139922367

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_ModerateBP6

The NM_000080.4(CHRNE):​c.1019C>T​(p.Pro340Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000166 in 1,597,414 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. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P340Q) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00017 ( 0 hom. )

Consequence

CHRNE
NM_000080.4 missense

Scores

1
3
15

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 0.0790

Publications

1 publications found
Variant links:
Genes affected
CHRNE (HGNC:1966): (cholinergic receptor nicotinic epsilon subunit) Acetylcholine receptors at mature mammalian neuromuscular junctions are pentameric protein complexes composed of four subunits in the ratio of two alpha subunits to one beta, one epsilon, and one delta subunit. The acetylcholine receptor changes subunit composition shortly after birth when the epsilon subunit replaces the gamma subunit seen in embryonic receptors. Mutations in the epsilon subunit are associated with congenital myasthenic syndrome. [provided by RefSeq, Sep 2009]
C17orf107 (HGNC:37238): (chromosome 17 open reading frame 107)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.21278784).
BP6
Variant 17-4899481-G-A is Benign according to our data. Variant chr17-4899481-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 465849.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CHRNENM_000080.4 linkc.1019C>T p.Pro340Leu missense_variant Exon 9 of 12 ENST00000649488.2 NP_000071.1
C17orf107NM_001145536.2 linkc.-282G>A upstream_gene_variant ENST00000381365.4 NP_001139008.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CHRNEENST00000649488.2 linkc.1019C>T p.Pro340Leu missense_variant Exon 9 of 12 NM_000080.4 ENSP00000497829.1
C17orf107ENST00000381365.4 linkc.-282G>A upstream_gene_variant 2 NM_001145536.2 ENSP00000370770.3

Frequencies

GnomAD3 genomes
AF:
0.000105
AC:
16
AN:
152134
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0000965
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000654
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:
0.000162
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.000181
AC:
40
AN:
221008
AF XY:
0.000159
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000315
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.0000524
Gnomad NFE exome
AF:
0.000356
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000172
AC:
249
AN:
1445280
Hom.:
0
Cov.:
34
AF XY:
0.000170
AC XY:
122
AN XY:
717188
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33322
American (AMR)
AF:
0.000118
AC:
5
AN:
42406
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25626
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39108
South Asian (SAS)
AF:
0.0000361
AC:
3
AN:
83166
European-Finnish (FIN)
AF:
0.0000197
AC:
1
AN:
50820
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5464
European-Non Finnish (NFE)
AF:
0.000209
AC:
231
AN:
1105636
Other (OTH)
AF:
0.000151
AC:
9
AN:
59732
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.479
Heterozygous variant carriers
0
12
25
37
50
62
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
10
20
30
40
50
<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
AF:
0.000105
AC:
16
AN:
152134
Hom.:
0
Cov.:
33
AF XY:
0.0000942
AC XY:
7
AN XY:
74304
show subpopulations
African (AFR)
AF:
0.0000965
AC:
4
AN:
41440
American (AMR)
AF:
0.0000654
AC:
1
AN:
15282
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5160
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4822
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10616
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.000162
AC:
11
AN:
68028
Other (OTH)
AF:
0.00
AC:
0
AN:
2090
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.444
Heterozygous variant carriers
0
1
2
3
4
5
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.0000901
Hom.:
0
Bravo
AF:
0.0000907
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000233
AC:
2
ExAC
AF:
0.000224
AC:
27

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:2Benign:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not provided Uncertain:2
Sep 25, 2019
Revvity Omics, Revvity
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Aug 01, 2022
CeGaT Center for Human Genetics Tuebingen
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Congenital myasthenic syndrome 4A Benign:1
Oct 12, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.095
BayesDel_addAF
Benign
-0.31
T
BayesDel_noAF
Benign
-0.37
CADD
Benign
14
DANN
Benign
0.96
DEOGEN2
Benign
0.33
T;T;.
Eigen
Benign
-0.51
Eigen_PC
Benign
-0.65
FATHMM_MKL
Benign
0.19
N
LIST_S2
Benign
0.062
.;T;T
M_CAP
Pathogenic
0.64
D
MetaRNN
Benign
0.21
T;T;T
MetaSVM
Uncertain
-0.22
T
MutationAssessor
Benign
1.8
L;L;.
PhyloP100
0.079
PrimateAI
Uncertain
0.65
T
PROVEAN
Benign
-1.4
N;.;.
REVEL
Uncertain
0.37
Sift
Benign
0.33
T;.;.
Sift4G
Benign
0.33
T;.;.
Polyphen
0.99
D;D;.
Vest4
0.19
MVP
0.90
MPC
0.17
ClinPred
0.066
T
GERP RS
0.43
PromoterAI
0.10
Neutral
Varity_R
0.070
gMVP
0.40
Mutation Taster
=94/6
polymorphism

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

Other links and lift over

dbSNP: rs139922367; hg19: chr17-4802776; API