Genetic Variant COLQ:p.Pro361Ser (chr3-15456013-G-A) – ACMG Classification: Benign (-19 pts)

Variant summary

Our verdict is Benign. The variant received -19 ACMG points: 1P and 20B. PP2BP4_StrongBP6_Very_StrongBS1BS2

The NM_005677.4(COLQ):c.1081C>T(p.Pro361Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000387 in 1,613,998 control chromosomes in the GnomAD database, including 11 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00042 ( 2 hom., cov: 32)

Exomes 𝑓: 0.00038 ( 9 hom. )

Consequence

COLQ
NM_005677.4 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 9.09

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

COLQ links:

ENSG00000293553 (HGNC:):

ENSG00000293553 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -19 ACMG points.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 16 curated pathogenic missense variants (we use a threshold of 10). The gene has 5 curated benign missense variants. Gene score misZ: -0.21928 (below the threshold of 3.09). Trascript score misZ: -0.17745 (below the threshold of 3.09). GenCC associations: The gene is linked to congenital myasthenic syndrome 5.

BP4

Computational evidence support a benign effect (MetaRNN=0.011561036).

BP6

Variant 3-15456013-G-A is Benign according to our data. Variant chr3-15456013-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 343846.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.00042 (64/152210) while in subpopulation EAS AF = 0.00929 (48/5168). AF 95% confidence interval is 0.0072. There are 2 homozygotes in GnomAd4. There are 42 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005677.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
COLQ	NM_005677.4	MANE Select	c.1081C>T	p.Pro361Ser	missense	Exon 15 of 17	NP_005668.2
COLQ	NM_080538.2		c.1051C>T	p.Pro351Ser	missense	Exon 15 of 17	NP_536799.1
COLQ	NM_080539.4		c.979C>T	p.Pro327Ser	missense	Exon 14 of 16	NP_536800.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
COLQ	ENST00000383788.10	TSL:1 MANE Select	c.1081C>T	p.Pro361Ser	missense	Exon 15 of 17	ENSP00000373298.3
COLQ	ENST00000603808.5	TSL:1	c.1081C>T	p.Pro361Ser	missense	Exon 15 of 17	ENSP00000474271.1
COLQ	ENST00000874202.1		c.1096C>T	p.Pro366Ser	missense	Exon 15 of 17	ENSP00000544261.1

Frequencies

GnomAD3 genomes

AF:

0.000408

AC:

AN:

152092

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00927

Gnomad SAS

AF:

0.00166

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00143

GnomAD2 exomes

AF:

0.00102

AC:

255

AN:

251092

AF XY:

0.00108

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0111

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000653

GnomAD4 exome

AF:

0.000383

AC:

560

AN:

1461788

Hom.:

Cov.:

AF XY:

0.000425

AC XY:

309

AN XY:

727186

show subpopulations

African (AFR)

AF:

0.000119

AC:

AN:

33480

American (AMR)

AF:

0.0000224

AC:

AN:

44710

Ashkenazi Jewish (ASJ)

AF:

0.000191

AC:

AN:

26130

East Asian (EAS)

AF:

0.00902

AC:

358

AN:

39698

South Asian (SAS)

AF:

0.00143

AC:

123

AN:

86246

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53402

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000540

AC:

AN:

1111962

Other (OTH)

AF:

0.00103

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.472

Heterozygous variant carriers

120

150

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<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:

0.000420

AC:

AN:

152210

Hom.:

Cov.:

AF XY:

0.000564

AC XY:

AN XY:

74416

show subpopulations

African (AFR)

AF:

0.0000482

AC:

AN:

41532

American (AMR)

AF:

0.0000654

AC:

AN:

15280

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00929

AC:

AN:

5168

South Asian (SAS)

AF:

0.00166

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10606

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68016

Other (OTH)

AF:

0.00237

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.000382

Hom.:

Bravo

AF:

0.000366

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.000980

AC:

119

Asia WGS

AF:

0.0160

AC:

AN:

3478

ClinVar

ClinVar submissions as Germline

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Congenital myasthenic syndrome 5 (2)

COLQ-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Uncertain

0.084

BayesDel_noAF

Pathogenic

0.36

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.31

Eigen

Pathogenic

0.75

Eigen_PC

Pathogenic

0.77

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.92

MetaRNN

Benign

0.012

MetaSVM

Uncertain

0.44

MutationAssessor

Uncertain

2.3

PhyloP100

9.1

PrimateAI

Benign

0.45

PROVEAN

Benign

-1.7

REVEL

Pathogenic

0.71

Sift

Uncertain

0.0040

Sift4G

Uncertain

0.017

Polyphen

0.98

Vest4

0.83

MVP

0.98

MPC

0.098

ClinPred

0.076

GERP RS

5.8

Varity_R

0.28

gMVP

0.70

Mutation Taster

=76/24

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.050

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over