Variant 8-144513353-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_004260.4(RECQL4):c.2328G>A(p.Met776Ile) variant causes a missense change. The variant allele was found at a frequency of 0.00000688 in 1,453,512 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: 0.0000069 ( 0 hom. )

Consequence

RECQL4
NM_004260.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.82

Variant links:

Genes affected

RECQL4 (HGNC:9949): (RecQ like helicase 4) The protein encoded by this gene is a DNA helicase that belongs to the RecQ helicase family. DNA helicases unwind double-stranded DNA into single-stranded DNAs and may modulate chromosome segregation. This gene is predominantly expressed in thymus and testis. Mutations in this gene are associated with Rothmund-Thomson, RAPADILINO and Baller-Gerold syndromes. [provided by RefSeq, Jan 2010]

RECQL4 links:

RECQL4 (HGNC:):

RECQL4 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.754

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RECQL4	NM_004260.4 linkuse as main transcript	c.2328G>A	p.Met776Ile	missense_variant	14/21	ENST00000617875.6	NP_004251.4	O94761

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
RECQL4	ENST00000617875.6 linkuse as main transcript	c.2328G>A	p.Met776Ile	missense_variant	14/21	1	NM_004260.4	ENSP00000482313.2	O94761
RECQL4	ENST00000621189.4 linkuse as main transcript	c.1257G>A	p.Met419Ile	missense_variant	13/20	1		ENSP00000483145.1	A0A087X072
RECQL4	ENST00000534626.6 linkuse as main transcript	c.633+63G>A		intron_variant		5		ENSP00000477457.1	V9GZ64
ENSG00000265393	ENST00000580385.1 linkuse as main transcript	n.272-253C>T		intron_variant		3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000868

AC:

AN:

230362

Hom.:

AF XY:

0.00000784

AC XY:

AN XY:

127574

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000293

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:

0.00000952

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000688

AC:

AN:

1453512

Hom.:

Cov.:

AF XY:

0.00000691

AC XY:

AN XY:

723460

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

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:

0.00000810

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Baller-Gerold syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Sep 21, 2023

This sequence change replaces methionine, which is neutral and non-polar, with isoleucine, which is neutral and non-polar, at codon 776 of the RECQL4 protein (p.Met776Ile). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with RECQL4-related conditions. ClinVar contains an entry for this variant (Variation ID: 528956). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt RECQL4 protein function. 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

Pathogenic

0.95

BayesDel_addAF

Pathogenic

0.39

BayesDel_noAF

Pathogenic

0.32

CADD

Pathogenic

DANN

Benign

0.87

DEOGEN2

Benign

0.27

T;D

FATHMM_MKL

Uncertain

0.95

LIST_S2

Pathogenic

0.99

D;D

M_CAP

Uncertain

0.21

MetaRNN

Pathogenic

0.75

D;D

MutationAssessor

Pathogenic

3.9

.;H

PrimateAI

Uncertain

0.74

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

.;D

Vest4

0.76

MVP

0.35

GERP RS

5.7

RBP_binding_hub_radar

0.92

RBP_regulation_power_radar

2.1

Varity_R

0.95

gMVP

0.55

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