rs750083920

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_018100.4(EFHC1):​c.187G>A​(p.Asp63Asn) variant causes a missense change. The variant allele was found at a frequency of 0.00000274 in 1,461,892 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

EFHC1
NM_018100.4 missense

Scores

3
16

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.66

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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.21442378).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
EFHC1NM_018100.4 linkc.187G>A p.Asp63Asn missense_variant Exon 2 of 11 ENST00000371068.11 NP_060570.2 Q5JVL4-1B2CKC5
EFHC1NM_001172420.2 linkc.130G>A p.Asp44Asn missense_variant Exon 3 of 12 NP_001165891.1 Q5JVL4-3B2CKC5
EFHC1NR_033327.2 linkn.256G>A non_coding_transcript_exon_variant Exon 2 of 10

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
EFHC1ENST00000371068.11 linkc.187G>A p.Asp63Asn missense_variant Exon 2 of 11 1 NM_018100.4 ENSP00000360107.4 Q5JVL4-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD2 exomes
AF:
0.00000795
AC:
2
AN:
251460
AF XY:
0.00000736
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000578
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:
0.00000274
AC:
4
AN:
1461892
Hom.:
0
Cov.:
33
AF XY:
0.00000138
AC XY:
1
AN XY:
727246
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33480
American (AMR)
AF:
0.0000671
AC:
3
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26136
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39700
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86256
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53420
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
8.99e-7
AC:
1
AN:
1112012
Other (OTH)
AF:
0.00
AC:
0
AN:
60396
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.463
Heterozygous variant carriers
0
1
2
2
3
4
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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
Cov.:
32
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.00000378
ExAC
AF:
0.00000824
AC:
1

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Absence seizure;C1850778:Myoclonic epilepsy, juvenile, susceptibility to, 1 Uncertain:1
Jan 15, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces aspartic acid, which is acidic and polar, with asparagine, which is neutral and polar, at codon 63 of the EFHC1 protein (p.Asp63Asn). This variant is present in population databases (rs750083920, gnomAD 0.006%). 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: 534106). 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 tolerated. 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. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.093
BayesDel_addAF
Benign
-0.30
T
BayesDel_noAF
Benign
-0.49
CADD
Benign
22
DANN
Uncertain
0.99
DEOGEN2
Benign
0.14
.;.;T;T;T;T;T;T;.;T;.;.
Eigen
Benign
0.075
Eigen_PC
Benign
0.15
FATHMM_MKL
Benign
0.69
D
LIST_S2
Uncertain
0.86
D;.;D;D;D;D;D;D;D;D;.;D
M_CAP
Benign
0.039
D
MetaRNN
Benign
0.21
T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM
Benign
-0.89
T
MutationAssessor
Uncertain
2.2
.;.;M;.;.;.;.;.;.;.;.;.
PhyloP100
6.7
PrimateAI
Benign
0.42
T
PROVEAN
Benign
-2.0
.;.;N;.;.;.;.;.;.;.;.;N
REVEL
Benign
0.18
Sift
Benign
0.13
.;.;T;.;.;.;.;.;.;.;.;T
Sift4G
Benign
0.14
.;.;T;.;.;.;.;.;.;.;.;T
Polyphen
0.55
.;.;P;.;.;.;.;.;.;.;.;.
Vest4
0.11, 0.11
MutPred
0.26
.;.;Gain of helix (P = 0.0854);Gain of helix (P = 0.0854);Gain of helix (P = 0.0854);Gain of helix (P = 0.0854);Gain of helix (P = 0.0854);.;Gain of helix (P = 0.0854);Gain of helix (P = 0.0854);.;.;
MVP
0.80
MPC
0.14
ClinPred
0.60
D
GERP RS
4.2
PromoterAI
-0.018
Neutral
Varity_R
0.10
gMVP
0.42
Mutation Taster
=88/12
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: rs750083920; hg19: chr6-52288867; COSMIC: COSV64135605; API