CPA6 p.Gln207Glu

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2

The NM_020361.5(CPA6):c.619C>G(p.Gln207Glu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00198 in 1,611,506 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts 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. Q207K) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0012 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0021 ( 4 hom. )

Consequence

CPA6
NM_020361.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:3U:10B:3

Conservation

PhyloP100: 8.97

Publications

11 publications found

Variant links:

Genes affected

CPA6 (HGNC:17245): (carboxypeptidase A6) The gene encodes a member of the peptidase M14 family of metallocarboxypeptidases. The encoded preproprotein is proteolytically processed to generate the mature enzyme, which catalyzes the release of large hydrophobic C-terminal amino acids. This enzyme has functions ranging from digestion of food to selective biosynthesis of neuroendocrine peptides. Mutations in this gene may be linked to epilepsy and febrile seizures, and a translocation t(6;8)(q26;q13) involving this gene has been associated with Duane retraction syndrome. [provided by RefSeq, May 2016]

CPA6 Gene-Disease associations (from GenCC):

benign familial mesial temporal lobe epilepsy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
familial mesial temporal lobe epilepsy with febrile seizures
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
familial temporal lobe epilepsy 5
Inheritance: AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
febrile seizures, familial, 11
Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics
epilepsy
Inheritance: AR, AD Classification: NO_KNOWN Submitted by: ClinGen

CPA6 links:

Genome browser will be placed here

new If you want to explore the variant's impact on the transcript NM_020361.5, check out the Mutation Effect Viewer. This is especially useful for frameshift variants or if you want to visualize the effect of exon loss / intron retention.

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BS2

High Homozygotes in GnomAdExome4 at 4 AR,AD gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020361.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CPA6	NM_020361.5	MANE Select	c.619C>G	p.Gln207Glu	missense	Exon 6 of 11	NP_065094.3
	CPA6	NM_001440615.1		c.619C>G	p.Gln207Glu	missense	Exon 6 of 7	NP_001427544.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CPA6	ENST00000297770.10	TSL:1 MANE Select	c.619C>G	p.Gln207Glu	missense	Exon 6 of 11	ENSP00000297770.4	Q8N4T0-1
CPA6	ENST00000479862.6	TSL:1	n.*215C>G		non_coding_transcript_exon	Exon 5 of 8	ENSP00000419016.2	Q8N4T0-3
CPA6	ENST00000518549.1	TSL:1	n.833C>G		non_coding_transcript_exon	Exon 6 of 8

Frequencies

GnomAD3 genomes

AF:

0.00122

AC:

186

AN:

152174

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000338

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00105

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00219

Gnomad OTH

AF:

0.00239

GnomAD2 exomes

AF:

0.00146

AC:

366

AN:

251082

AF XY:

0.00153

show subpopulations

Gnomad AFR exome

AF:

0.000554

Gnomad AMR exome

AF:

0.00186

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00244

Gnomad OTH exome

AF:

0.00180

GnomAD4 exome

AF:

0.00206

AC:

3001

AN:

1459214

Hom.:

Cov.:

AF XY:

0.00202

AC XY:

1466

AN XY:

726034

show subpopulations

African (AFR)

AF:

0.000239

AC:

AN:

33410

American (AMR)

AF:

0.00210

AC:

AN:

44664

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26096

East Asian (EAS)

AF:

0.00

AC:

AN:

39682

South Asian (SAS)

AF:

0.000197

AC:

AN:

86178

European-Finnish (FIN)

AF:

0.000112

AC:

AN:

53402

Middle Eastern (MID)

AF:

0.00261

AC:

AN:

5756

European-Non Finnish (NFE)

AF:

0.00248

AC:

2749

AN:

1109730

Other (OTH)

AF:

0.00186

AC:

112

AN:

60296

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.463

Heterozygous variant carriers

124

247

371

494

618

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

104

208

312

416

520

<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:

0.00122

AC:

186

AN:

152292

Hom.:

Cov.:

AF XY:

0.00106

AC XY:

AN XY:

74468

show subpopulations

African (AFR)

AF:

0.000337

AC:

AN:

41564

American (AMR)

AF:

0.00105

AC:

AN:

15296

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.000193

AC:

AN:

5174

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.0000942

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00219

AC:

149

AN:

68022

Other (OTH)

AF:

0.00237

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

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:

0.00163

Hom.:

Bravo

AF:

0.00124

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (4)

Familial temporal lobe epilepsy 5 (3)

Febrile seizures, familial, 11 (2)

not specified (2)

Confusion;C0030252:Palpitations;C0036572:Seizure;C0156404:Irregular menstruation;C0751495:Focal-onset seizure;C4020949:Abnormal emotional state;C5399973:Periventricular heterotopia (1)

Epilepsy (1)

Familial temporal lobe epilepsy 5;C3280734:Febrile seizures, familial, 11 (1)

Global developmental delay (1)

Self-limited epilepsy with centrotemporal spikes (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.20

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Uncertain

0.040

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.064

Eigen

Pathogenic

0.70

Eigen_PC

Pathogenic

0.73

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.88

M_CAP

Uncertain

0.27

MetaRNN

Benign

0.13

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.70

PhyloP100

9.0

PrimateAI

Uncertain

0.56

PROVEAN

Uncertain

-2.5

REVEL

Uncertain

0.48

Sift

Uncertain

0.014

Sift4G

Uncertain

0.015

Varity_R

0.82

gMVP

0.92

Mutation Taster

=29/71

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.22

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.22

Position offset: 3

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

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