8-144513144-G-A

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2BP4_StrongBP6_Moderate

The NM_004260.4(RECQL4):​c.2464-6C>T variant causes a splice region, splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000193 in 1,449,772 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.000014 ( 0 hom., cov: 34)
Exomes 𝑓: 0.000020 ( 0 hom. )

Consequence

RECQL4
NM_004260.4 splice_region, splice_polypyrimidine_tract, intron

Scores

2
Splicing: ADA: 0.00008355
2

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.723
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]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.82).
BP6
Variant 8-144513144-G-A is Benign according to our data. Variant chr8-144513144-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 774011.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr8-144513144-G-A is described in Lovd as [Likely_benign].

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
RECQL4NM_004260.4 linkuse as main transcriptc.2464-6C>T splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant ENST00000617875.6 NP_004251.4

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
RECQL4ENST00000617875.6 linkuse as main transcriptc.2464-6C>T splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant 1 NM_004260.4 ENSP00000482313 P1
RECQL4ENST00000621189.4 linkuse as main transcriptc.1393-6C>T splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant 1 ENSP00000483145
ENST00000580385.1 linkuse as main transcriptn.271+307G>A intron_variant, non_coding_transcript_variant 3
RECQL4ENST00000534626.6 linkuse as main transcriptc.635-6C>T splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant 5 ENSP00000477457

Frequencies

GnomAD3 genomes
AF:
0.0000136
AC:
2
AN:
146534
Hom.:
0
Cov.:
34
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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:
0.0000302
Gnomad OTH
AF:
0.00
GnomAD4 exome
AF:
0.0000200
AC:
26
AN:
1303238
Hom.:
0
Cov.:
67
AF XY:
0.0000296
AC XY:
19
AN XY:
640814
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:
0.0000130
Gnomad4 FIN exome
AF:
0.0000285
Gnomad4 NFE exome
AF:
0.0000226
Gnomad4 OTH exome
AF:
0.0000195
GnomAD4 genome
AF:
0.0000136
AC:
2
AN:
146534
Hom.:
0
Cov.:
34
AF XY:
0.00
AC XY:
0
AN XY:
71256
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000302
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.0000113

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Baller-Gerold syndrome Benign:1
Likely benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJun 23, 2023- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.82
CADD
Benign
0.61
DANN
Benign
0.59

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.000084
dbscSNV1_RF
Benign
0.0
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.

Other links and lift over

dbSNP: rs1172497739; hg19: chr8-145738527; API