X-72206437-A-G

Position:

chrX-72206437-A-G

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_017669.4(ERCC6L):c.2330T>C(p.Ile777Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000447 in 1,208,727 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 14 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000072 ( 0 hom., 2 hem., cov: 23)

Exomes 𝑓: 0.000042 ( 0 hom. 12 hem. )

Consequence

ERCC6L
NM_017669.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.04

Variant links:

Genes affected

ERCC6L (HGNC:20794): (ERCC excision repair 6 like, spindle assembly checkpoint helicase) This gene encodes a member of the SWItch/Sucrose Non-Fermentable (SWI/SNF2) family of proteins, and contains a SNF2-like ATPase domain and a PICH family domain. One distinguishing feature of this SWI/SNF protein family member is that during interphase, the protein is excluded from the nucleus, and only associates with chromatin after the nuclear envelope has broken down. This protein is a DNA translocase that is thought to bind double-stranded DNA that is exposed to stretching forces, such as those exerted by the mitotic spindle. This protein associates with ribosomal DNA and ultra-fine DNA bridges (UFBs), fine structures that connect sister chromatids during anaphase at some sites such as fragile sites, telomeres and centromeres. This gene is required for the faithful segregation of sister chromatids during mitosis, and the ATPase activity of this protein required for the resolution of UFBs before cytokinesis. [provided by RefSeq, May 2017]

ERCC6L links:

PIN4 (HGNC:8992): (peptidylprolyl cis/trans isomerase, NIMA-interacting 4) This gene encodes a member of the parvulin subfamily of the peptidyl-prolyl cis/trans isomerase protein family. The encoded protein catalyzes the isomerization of peptidylprolyl bonds, and may play a role in the cell cycle, chromatin remodeling, and/or ribosome biogenesis. The encoded protein may play an additional role in the mitochondria. [provided by RefSeq, Dec 2009]

PIN4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.22794542).

BS2

High Hemizygotes in GnomAd4 at 2 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
ERCC6L	NM_017669.4 linkuse as main transcript	c.2330T>C	p.Ile777Thr	missense_variant	2/2	ENST00000334463.4	NP_060139.2
ERCC6L	NM_001009954.3 linkuse as main transcript	c.1961T>C	p.Ile654Thr	missense_variant	3/3		NP_001009954.1
PIN4	NM_001170747.1 linkuse as main transcript	c.312+9533A>G		intron_variant			NP_001164218.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ERCC6L	ENST00000334463.4 linkuse as main transcript	c.2330T>C	p.Ile777Thr	missense_variant	2/2	1	NM_017669.4	ENSP00000334675	P1

Frequencies

GnomAD3 genomes

AF:

0.0000717

AC:

AN:

111512

Hom.:

Cov.:

AF XY:

0.0000594

AC XY:

AN XY:

33690

show subpopulations

Gnomad AFR

AF:

0.0000326

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000956

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000113

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000275

AC:

AN:

181499

Hom.:

AF XY:

0.00

AC XY:

AN XY:

66129

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000369

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000492

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000419

AC:

AN:

1097215

Hom.:

Cov.:

AF XY:

0.0000331

AC XY:

AN XY:

362633

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000285

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000186

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000475

Gnomad4 OTH exome

AF:

0.0000869

GnomAD4 genome

AF:

0.0000717

AC:

AN:

111512

Hom.:

Cov.:

AF XY:

0.0000594

AC XY:

AN XY:

33690

show subpopulations

Gnomad4 AFR

AF:

0.0000326

Gnomad4 AMR

AF:

0.0000956

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000113

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000214

Hom.:

Bravo

AF:

0.0000604

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000346

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000297

AC:

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 03, 2022

The c.2330T>C (p.I777T) alteration is located in exon 2 (coding exon 2) of the ERCC6L gene. This alteration results from a T to C substitution at nucleotide position 2330, causing the isoleucine (I) at amino acid position 777 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.083

BayesDel_addAF

Benign

-0.044

BayesDel_noAF

Benign

-0.16

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.033

T;T

FATHMM_MKL

Benign

0.31

LIST_S2

Benign

0.65

T;T

M_CAP

Pathogenic

0.33

MetaRNN

Benign

0.23

T;T

MetaSVM

Uncertain

0.23

MutationAssessor

Uncertain

2.0

.;M

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.43

PROVEAN

Benign

-2.0

N;N

REVEL

Benign

0.28

Sift

Uncertain

0.0020

D;D

Sift4G

Uncertain

0.032

D;D

Polyphen

1.0

.;D

Vest4

0.27

MVP

0.81

MPC

1.4

ClinPred

0.48

GERP RS

5.2

Varity_R

0.15

gMVP

0.35

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