rs75838637

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_005677.4(COLQ):​c.1196-45C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00143 in 1,380,846 control chromosomes in the GnomAD database, including 22 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0068 ( 10 hom., cov: 32)
Exomes 𝑓: 0.00077 ( 12 hom. )

Consequence

COLQ
NM_005677.4 intron

Scores

2

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 0.890

Publications

1 publications found
Variant links:
Genes affected
COLQ (HGNC:2226): (collagen like tail subunit of asymmetric acetylcholinesterase) This gene encodes the subunit of a collagen-like molecule associated with acetylcholinesterase in skeletal muscle. Each molecule is composed of three identical subunits. Each subunit contains a proline-rich attachment domain (PRAD) that binds an acetylcholinesterase tetramer to anchor the catalytic subunit of the enzyme to the basal lamina. Mutations in this gene are associated with endplate acetylcholinesterase deficiency. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
COLQ Gene-Disease associations (from GenCC):
  • congenital myasthenic syndrome 5
    Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, PanelApp Australia

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.8).
BP6
Variant 3-15453976-G-A is Benign according to our data. Variant chr3-15453976-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 259851.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BS1
Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00678 (1032/152196) while in subpopulation AFR AF = 0.0233 (969/41516). AF 95% confidence interval is 0.0221. There are 10 homozygotes in GnomAd4. There are 492 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
BS2
High Homozygotes in GnomAd4 at 10 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
COLQNM_005677.4 linkc.1196-45C>T intron_variant Intron 15 of 16 ENST00000383788.10 NP_005668.2
COLQNM_080538.2 linkc.1166-45C>T intron_variant Intron 15 of 16 NP_536799.1
COLQNM_080539.4 linkc.1094-45C>T intron_variant Intron 14 of 15 NP_536800.2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
COLQENST00000383788.10 linkc.1196-45C>T intron_variant Intron 15 of 16 1 NM_005677.4 ENSP00000373298.3
COLQENST00000603808.5 linkc.1200-46C>T intron_variant Intron 15 of 16 1 ENSP00000474271.1
ENSG00000293553ENST00000629729.3 linkn.43-45C>T intron_variant Intron 1 of 5 5 ENSP00000518887.1

Frequencies

GnomAD3 genomes
AF:
0.00667
AC:
1015
AN:
152078
Hom.:
9
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0230
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00282
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000207
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00316
Gnomad NFE
AF:
0.0000882
Gnomad OTH
AF:
0.00621
GnomAD2 exomes
AF:
0.00164
AC:
295
AN:
179436
AF XY:
0.00126
show subpopulations
Gnomad AFR exome
AF:
0.0222
Gnomad AMR exome
AF:
0.00180
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000927
Gnomad OTH exome
AF:
0.000411
GnomAD4 exome
AF:
0.000769
AC:
945
AN:
1228650
Hom.:
12
Cov.:
17
AF XY:
0.000671
AC XY:
414
AN XY:
616806
show subpopulations
African (AFR)
AF:
0.0240
AC:
680
AN:
28388
American (AMR)
AF:
0.00202
AC:
76
AN:
37650
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
24214
East Asian (EAS)
AF:
0.00
AC:
0
AN:
35682
South Asian (SAS)
AF:
0.000182
AC:
14
AN:
76746
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
50044
Middle Eastern (MID)
AF:
0.00277
AC:
14
AN:
5058
European-Non Finnish (NFE)
AF:
0.0000436
AC:
40
AN:
918262
Other (OTH)
AF:
0.00230
AC:
121
AN:
52606
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.501
Heterozygous variant carriers
0
55
109
164
218
273
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
22
44
66
88
110
<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:
0.00678
AC:
1032
AN:
152196
Hom.:
10
Cov.:
32
AF XY:
0.00661
AC XY:
492
AN XY:
74416
show subpopulations
African (AFR)
AF:
0.0233
AC:
969
AN:
41516
American (AMR)
AF:
0.00281
AC:
43
AN:
15284
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5168
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4820
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10610
Middle Eastern (MID)
AF:
0.00340
AC:
1
AN:
294
European-Non Finnish (NFE)
AF:
0.0000882
AC:
6
AN:
68010
Other (OTH)
AF:
0.00615
AC:
13
AN:
2114
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.495
Heterozygous variant carriers
0
48
96
143
191
239
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome Hom
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
Alfa
AF:
0.00154
Hom.:
0
Bravo
AF:
0.00762
Asia WGS
AF:
0.00375
AC:
13
AN:
3478

ClinVar

Significance: Likely benign
Submissions summary: Benign:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:2
-
Breakthrough Genomics, Breakthrough Genomics
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:not provided

- -

Jan 12, 2021
GeneDx
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

not specified Benign:1
-
PreventionGenetics, part of Exact Sciences
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.80
CADD
Benign
5.3
DANN
Benign
0.74
PhyloP100
0.89
Mutation Taster
=100/0
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: rs75838637; hg19: chr3-15495483; API