rs780723602

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 4P and 2B. PM1PM2BP4_Moderate

The NM_004260.4(RECQL4):​c.2758A>G​(p.Ile920Val) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.0000112 in 1,611,702 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I920M) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 34)
Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

RECQL4
NM_004260.4 missense, splice_region

Scores

3
9

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.74

Publications

1 publications found
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 Gene-Disease associations (from GenCC):
  • Baller-Gerold syndrome
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: PanelApp Australia, Orphanet, G2P
  • Rothmund-Thomson syndrome
    Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
  • Rothmund-Thomson syndrome type 2
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Orphanet
  • osteosarcoma
    Inheritance: AR Classification: STRONG Submitted by: Genomics England PanelApp
  • rapadilino syndrome
    Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp
  • congenital heart disease
    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 2 ACMG points.

PM1
In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 34 uncertain in NM_004260.4
PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.25336105).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004260.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
RECQL4
NM_004260.4
MANE Select
c.2758A>Gp.Ile920Val
missense splice_region
Exon 16 of 21NP_004251.4O94761
RECQL4
NM_001413019.1
c.2833A>Gp.Ile945Val
missense
Exon 15 of 20NP_001399948.1
RECQL4
NM_001413023.1
c.1762A>Gp.Ile588Val
missense
Exon 14 of 19NP_001399952.1

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
RECQL4
ENST00000617875.6
TSL:1 MANE Select
c.2758A>Gp.Ile920Val
missense splice_region
Exon 16 of 21ENSP00000482313.2O94761
RECQL4
ENST00000621189.4
TSL:1
c.1687A>Gp.Ile563Val
missense splice_region
Exon 15 of 20ENSP00000483145.1A0A087X072
RECQL4
ENST00000531875.2
TSL:5
c.4A>Gp.Ile2Val
missense
Exon 1 of 6ENSP00000477910.1A0A087WTJ0

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152190
Hom.:
0
Cov.:
34
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000654
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:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.00000814
AC:
2
AN:
245824
AF XY:
0.00000745
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 FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000900
Gnomad OTH exome
AF:
0.000167
GnomAD4 exome
AF:
0.0000116
AC:
17
AN:
1459512
Hom.:
0
Cov.:
67
AF XY:
0.00000551
AC XY:
4
AN XY:
726060
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33478
American (AMR)
AF:
0.00
AC:
0
AN:
44676
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26114
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39688
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86218
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
51508
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.0000135
AC:
15
AN:
1111730
Other (OTH)
AF:
0.0000331
AC:
2
AN:
60332
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.463
Heterozygous variant carriers
0
1
3
4
6
7
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
AF:
0.00000657
AC:
1
AN:
152190
Hom.:
0
Cov.:
34
AF XY:
0.0000135
AC XY:
1
AN XY:
74342
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41462
American (AMR)
AF:
0.0000654
AC:
1
AN:
15282
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3468
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5188
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4834
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10612
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68024
Other (OTH)
AF:
0.00
AC:
0
AN:
2092
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.425
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome 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
Alfa
AF:
0.0000712
Hom.:
0
Bravo
AF:
0.0000113
ExAC
AF:
0.00000832
AC:
1
EpiCase
AF:
0.00
EpiControl
AF:
0.0000594

ClinVar

ClinVar submissions as Germline
Significance:Uncertain significance
Revision:criteria provided, single submitter
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
1
-
Baller-Gerold syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.10
BayesDel_addAF
Uncertain
0.026
T
BayesDel_noAF
Benign
-0.19
CADD
Benign
20
DANN
Benign
0.69
DEOGEN2
Benign
0.018
T
FATHMM_MKL
Uncertain
0.96
D
LIST_S2
Benign
0.82
T
M_CAP
Benign
0.029
D
MetaRNN
Benign
0.25
T
MutationAssessor
Uncertain
2.6
M
PhyloP100
3.7
PrimateAI
Benign
0.33
T
Sift4G
Benign
0.20
T
Polyphen
0.90
P
Vest4
0.33
MVP
0.25
GERP RS
5.3
PromoterAI
0.0024
Neutral
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.2
Varity_R
0.14
gMVP
0.19
Mutation Taster
=83/17
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: rs780723602; hg19: chr8-145738152; API