NM_005236.3:c.3G>A

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PVS1_SupportingPM2

The NM_005236.3(ERCC4):​c.3G>A​(p.Met1?) variant causes a start lost change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000138 in 1,452,672 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

ERCC4
NM_005236.3 start_lost

Scores

7
2
7

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.45
Variant links:
Genes affected
ERCC4 (HGNC:3436): (ERCC excision repair 4, endonuclease catalytic subunit) The protein encoded by this gene forms a complex with ERCC1 and is involved in the 5' incision made during nucleotide excision repair. This complex is a structure specific DNA repair endonuclease that interacts with EME1. Defects in this gene are a cause of xeroderma pigmentosum complementation group F (XP-F), or xeroderma pigmentosum VI (XP6).[provided by RefSeq, Mar 2009]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PVS1
Start lost variant, no pathogenic variants between lost start and next in-frame start position. Next in-frame start position is after 33 CDS bases. Genomic position: 13920198. Lost 0.012 part of the original CDS.
PM2
Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ERCC4NM_005236.3 linkc.3G>A p.Met1? start_lost Exon 1 of 11 ENST00000311895.8 NP_005227.1 Q92889-1A0A1W1GSK9
ERCC4XM_011522424.4 linkc.3G>A p.Met1? start_lost Exon 1 of 12 XP_011520726.1 A0A804HKF9
LOC105371093XR_007064999.1 linkn.82+6357C>T intron_variant Intron 1 of 2
LOC105371093XR_007065000.1 linkn.82+6357C>T intron_variant Intron 1 of 3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
ERCC4ENST00000311895.8 linkc.3G>A p.Met1? start_lost Exon 1 of 11 1 NM_005236.3 ENSP00000310520.7 Q92889-1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD4 exome
AF:
0.00000138
AC:
2
AN:
1452672
Hom.:
0
Cov.:
34
AF XY:
0.00000138
AC XY:
1
AN XY:
723134
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:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
8.99e-7
Gnomad4 OTH exome
AF:
0.0000166
GnomAD4 genome
Cov.:
33

ClinVar

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

Submissions by phenotype

Cockayne syndrome;C0268140:Xeroderma pigmentosum, group F;C3808988:Fanconi anemia complementation group Q Uncertain:1
Oct 09, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This sequence change affects the initiator methionine of the ERCC4 mRNA. The next in-frame methionine is located at codon 12. This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with ERCC4-related conditions. Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. 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
BayesDel_addAF
Pathogenic
0.63
D
BayesDel_noAF
Pathogenic
0.29
CADD
Uncertain
23
DANN
Uncertain
1.0
DEOGEN2
Benign
0.10
.;T
Eigen
Benign
-0.046
Eigen_PC
Benign
0.069
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Uncertain
0.90
D;D
M_CAP
Pathogenic
0.37
D
MetaRNN
Pathogenic
0.98
D;D
MetaSVM
Benign
-0.85
T
PROVEAN
Benign
-0.20
.;N
REVEL
Benign
0.28
Sift
Pathogenic
0.0
.;D
Sift4G
Pathogenic
0.0
D;D
Polyphen
0.020
.;B
Vest4
0.81
MutPred
0.95
Gain of catalytic residue at M1 (P = 0.0708);Gain of catalytic residue at M1 (P = 0.0708);
MVP
0.89
ClinPred
1.0
D
GERP RS
5.1
Varity_R
0.94
gMVP
0.45

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr16-14014025; COSMIC: COSV61314511; COSMIC: COSV61314511; API