6-52479127-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_018100.4(EFHC1):c.1369C>T(p.Arg457Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000477 in 1,614,122 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R457L) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00015 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000037 ( 1 hom. )

Consequence

EFHC1
NM_018100.4 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 1.45

Publications

0 publications found

Variant links:

Genes affected

EFHC1 (HGNC:16406): (EF-hand domain containing 1) This gene encodes an EF-hand-containing calcium binding protein. The encoded protein likely plays a role in calcium homeostasis. Mutations in this gene have been associated with susceptibility to juvenile myoclonic epilepsy and juvenile absence epilepsy. Alternatively spliced transcript variants have been described. [provided by RefSeq, Feb 2010]

EFHC1 Gene-Disease associations (from GenCC):

juvenile myoclonic epilepsy
Inheritance: AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)
epilepsy
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

EFHC1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.25755262).

BS2

High AC in GnomAd4 at 23 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018100.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
EFHC1	NM_018100.4	MANE Select	c.1369C>T	p.Arg457Cys	missense	Exon 8 of 11	NP_060570.2
EFHC1	NM_001172420.2		c.1312C>T	p.Arg438Cys	missense	Exon 9 of 12	NP_001165891.1
EFHC1	NR_033327.2		n.2695C>T		non_coding_transcript_exon	Exon 7 of 10

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
EFHC1	ENST00000371068.11	TSL:1 MANE Select	c.1369C>T	p.Arg457Cys	missense	Exon 8 of 11	ENSP00000360107.4
EFHC1	ENST00000637340.1	TSL:1	n.3294C>T		non_coding_transcript_exon	Exon 7 of 10
EFHC1	ENST00000637353.1	TSL:5	c.1369C>T	p.Arg457Cys	missense	Exon 8 of 11	ENSP00000490441.1

Frequencies

GnomAD3 genomes

AF:

0.000151

AC:

AN:

152162

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000836

AC:

AN:

251324

AF XY:

0.0000957

show subpopulations

Gnomad AFR exome

AF:

0.000308

Gnomad AMR exome

AF:

0.000116

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000369

AC:

AN:

1461842

Hom.:

Cov.:

AF XY:

0.0000454

AC XY:

AN XY:

727224

show subpopulations

African (AFR)

AF:

0.000508

AC:

AN:

33478

American (AMR)

AF:

0.0000894

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.000336

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111980

Other (OTH)

AF:

0.0000331

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.468

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

AF:

0.000151

AC:

AN:

152280

Hom.:

Cov.:

AF XY:

0.000175

AC XY:

AN XY:

74464

show subpopulations

African (AFR)

AF:

0.000481

AC:

AN:

41566

American (AMR)

AF:

0.0000654

AC:

AN:

15296

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.000193

AC:

AN:

5194

South Asian (SAS)

AF:

0.000207

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68002

Other (OTH)

AF:

0.00

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.479

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:

0.000164

Hom.:

Bravo

AF:

0.000185

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000123

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Absence seizure;C1850778:Myoclonic epilepsy, juvenile, susceptibility to, 1

Uncertain:1

Aug 16, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 457 of the EFHC1 protein (p.Arg457Cys). This variant is present in population databases (rs373196171, gnomAD 0.04%). This variant has not been reported in the literature in individuals affected with EFHC1-related conditions. ClinVar contains an entry for this variant (Variation ID: 411569). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive.

not provided

Uncertain:1

Jun 14, 2021

Athena Diagnostics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.28

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.26

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.30

Eigen

Uncertain

0.33

Eigen_PC

Uncertain

0.26

FATHMM_MKL

Uncertain

0.77

LIST_S2

Uncertain

0.96

M_CAP

Benign

0.078

MetaRNN

Benign

0.26

MetaSVM

Benign

-0.68

MutationAssessor

Pathogenic

3.0

PhyloP100

1.4

PrimateAI

Uncertain

0.67

PROVEAN

Pathogenic

-6.7

REVEL

Uncertain

0.29

Sift

Uncertain

0.025

Sift4G

Uncertain

0.033

Polyphen

0.98

Vest4

0.50

MVP

0.80

MPC

0.36

ClinPred

0.60

GERP RS

1.9

Varity_R

0.50

gMVP

0.71

Mutation Taster

=86/14

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

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

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over