rs543160745

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_018100.4(EFHC1):c.266A>G(p.His89Arg) variant causes a missense change. The variant allele was found at a frequency of 0.0000372 in 1,614,022 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000039 ( 1 hom. )

Consequence

EFHC1
NM_018100.4 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 5.06

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAdExome4 at 57 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EFHC1	NM_018100.4 link	c.266A>G	p.His89Arg	missense_variant	Exon 2 of 11	ENST00000371068.11	NP_060570.2	Q5JVL4-1B2CKC5
EFHC1	NM_001172420.2 link	c.209A>G	p.His70Arg	missense_variant	Exon 3 of 12		NP_001165891.1	Q5JVL4-3B2CKC5
EFHC1	NR_033327.2 link	n.335A>G		non_coding_transcript_exon_variant	Exon 2 of 10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EFHC1	ENST00000371068.11 link	c.266A>G	p.His89Arg	missense_variant	Exon 2 of 11	1	NM_018100.4	ENSP00000360107.4		Q5JVL4-1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152202

Hom.:

Cov.:

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:

0.000621

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000757

AC:

AN:

251154

Hom.:

AF XY:

0.0000958

AC XY:

AN XY:

135760

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000621

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000390

AC:

AN:

1461702

Hom.:

Cov.:

AF XY:

0.0000564

AC XY:

AN XY:

727142

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000580

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000994

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152320

Hom.:

Cov.:

AF XY:

0.0000268

AC XY:

AN XY:

74488

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000622

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ExAC

AF:

0.000107

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

Jun 22, 2020

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces histidine with arginine at codon 89 of the EFHC1 protein (p.His89Arg). The histidine residue is moderately conserved and there is a small physicochemical difference between histidine and arginine. This variant is present in population databases (rs543160745, ExAC 0.08%), and has an allele count higher than expected for a pathogenic variant (PMID: 28166811). This variant has been observed in individual(s) with juvenile myoclonic epilepsy (PMID: 28370826, 27467453). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). 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. -

not provided

Uncertain:1

Apr 25, 2013

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is denoted as NM_018100.3:c.266A>G; p.H89R:CAT>CGT. This missense change has not been published as a mutation, nor has it been reported as a benign polymorphism to our knowledge. It was not observed in approximately 6,500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. The amino acid substitution is conservative as both Histidine and Arginine are positively charged amino acid residues and His89Arg alters a position that is not well conserved in the protein. However, in-silico models are not consistent in their predictions of whether His89Arg is damaging to the structure/function of the protein. The variant is found in EPILEPSY panel(s). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.37

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.16

CADD

Uncertain

DANN

Benign

0.93

DEOGEN2

Benign

0.40

.;.;T;T;T;T;T;T;.;T;.;.

Eigen

Uncertain

0.35

Eigen_PC

Uncertain

0.43

FATHMM_MKL

Uncertain

0.88

LIST_S2

Uncertain

0.89

D;.;D;D;D;D;D;D;D;D;.;D

M_CAP

Benign

0.029

MetaRNN

Uncertain

0.44

T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.42

MutationAssessor

Uncertain

2.7

.;.;M;.;.;.;.;.;.;.;.;.

PrimateAI

Uncertain

0.59

PROVEAN

Pathogenic

-6.0

.;.;D;.;.;.;.;.;.;.;.;D

REVEL

Uncertain

0.33

Sift

Benign

0.15

.;.;T;.;.;.;.;.;.;.;.;T

Sift4G

Benign

0.32

.;.;T;.;.;.;.;.;.;.;.;T

Polyphen

0.0080

.;.;B;.;.;.;.;.;.;.;.;.

Vest4

0.63, 0.68

MutPred

0.80

.;.;Gain of helix (P = 0.1736);Gain of helix (P = 0.1736);Gain of helix (P = 0.1736);Gain of helix (P = 0.1736);Gain of helix (P = 0.1736);.;Gain of helix (P = 0.1736);Gain of helix (P = 0.1736);.;.;

MVP

0.85

MPC

0.38

ClinPred

0.89

GERP RS

6.0

Varity_R

0.45

gMVP

0.67

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over