NM_000747.3:c.40_48delGGGGCGCCG

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM4

The NM_000747.3(CHRNB1):​c.40_48delGGGGCGCCG​(p.Gly14_Pro16del) variant causes a conservative inframe deletion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000311 in 1,609,238 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000034 ( 0 hom. )

Consequence

CHRNB1
NM_000747.3 conservative_inframe_deletion

Scores

Not classified

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 1.07

Publications

0 publications found
Variant links:
Genes affected
CHRNB1 (HGNC:1961): (cholinergic receptor nicotinic beta 1 subunit) The muscle acetylcholine receptor is composed of five subunits: two alpha subunits and one beta, one gamma, and one delta subunit. This gene encodes the beta subunit of the acetylcholine receptor. The acetylcholine receptor changes conformation upon acetylcholine binding leading to the opening of an ion-conducting channel across the plasma membrane. Mutations in this gene are associated with slow-channel congenital myasthenic syndrome. [provided by RefSeq, Jul 2008]
FGF11 (HGNC:3667): (fibroblast growth factor 11) The protein encoded by this gene is a member of the fibroblast growth factor (FGF) family. FGF family members possess broad mitogenic and cell survival activities, and are involved in a variety of biological processes, including embryonic development, cell growth, morphogenesis, tissue repair, tumor growth and invasion. The function of this gene has not yet been determined. The expression pattern of the mouse homolog implies a role in nervous system development. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2015]

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM4
Nonframeshift variant in NON repetitive region in NM_000747.3.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000747.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
CHRNB1
NM_000747.3
MANE Select
c.40_48delGGGGCGCCGp.Gly14_Pro16del
conservative_inframe_deletion
Exon 1 of 11NP_000738.2
FGF11
NM_004112.4
MANE Select
c.*2020_*2028delGGGGGCGCC
downstream_gene
N/ANP_004103.1Q92914
FGF11
NM_001303460.2
c.*2020_*2028delGGGGGCGCC
downstream_gene
N/ANP_001290389.1B7Z1C3

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
CHRNB1
ENST00000306071.7
TSL:1 MANE Select
c.40_48delGGGGCGCCGp.Gly14_Pro16del
conservative_inframe_deletion
Exon 1 of 11ENSP00000304290.2P11230-1
ENSG00000272884
ENST00000575331.1
TSL:1
n.4754_4762delGGGGCGCCG
non_coding_transcript_exon
Exon 3 of 3
CHRNB1
ENST00000572857.5
TSL:4
c.40_48delGGGGCGCCGp.Gly14_Pro16del
conservative_inframe_deletion
Exon 1 of 6ENSP00000461402.1I3L4N5

Frequencies

GnomAD3 genomes
AF:
0.00000658
AC:
1
AN:
151954
Hom.:
0
Cov.:
33
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:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000147
Gnomad OTH
AF:
0.00
GnomAD4 exome
AF:
0.0000336
AC:
49
AN:
1457284
Hom.:
0
AF XY:
0.0000317
AC XY:
23
AN XY:
724930
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33432
American (AMR)
AF:
0.00
AC:
0
AN:
44604
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26068
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39666
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86104
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
50626
Middle Eastern (MID)
AF:
0.000383
AC:
2
AN:
5226
European-Non Finnish (NFE)
AF:
0.0000405
AC:
45
AN:
1111394
Other (OTH)
AF:
0.0000332
AC:
2
AN:
60164
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.431
Heterozygous variant carriers
0
3
7
10
14
17
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
4
8
12
16
20
<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:
0.00000658
AC:
1
AN:
151954
Hom.:
0
Cov.:
33
AF XY:
0.00
AC XY:
0
AN XY:
74228
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41380
American (AMR)
AF:
0.00
AC:
0
AN:
15266
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5154
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4824
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10582
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
314
European-Non Finnish (NFE)
AF:
0.0000147
AC:
1
AN:
67964
Other (OTH)
AF:
0.00
AC:
0
AN:
2088
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.0000113

ClinVar

ClinVar submissions
Significance:Uncertain significance
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
1
-
Congenital myasthenic syndrome 2A (1)
-
1
-
not provided (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
PhyloP100
1.1
Mutation Taster
=170/30
polymorphism

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs1250653617; hg19: chr17-7348484; API