8-144513017-G-T

Variant names:

• chr8-144513017-G-T
• rs781636798
• NM_004260.4:c.2585C>A

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_004260.4(RECQL4):​c.2585C>A​(p.Ser862*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★). Synonymous variant affecting the same amino acid position (i.e. S862S) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: RECQL4 NM_004260.4 stop_gained
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: -1.81
• Publications: 0 publications found

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, SUPPORTIVE Submitted by: 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: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Orphanet, G2P
• osteosarcoma

  Inheritance: AR Classification: STRONG Submitted by: Genomics England PanelApp
• rapadilino syndrome

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet
• congenital heart disease

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ENSG00000265393 (HGNC:):

ACMG classification

Our verdict: Pathogenic. The variant received 12 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 8-144513017-G-T is Pathogenic according to our data. Variant chr8-144513017-G-T is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 1878233.Status of the report is criteria_provided_single_submitter, 1 stars.

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.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RECQL4	NM_004260.4	MANE Select	c.2585C>A	p.Ser862*	stop_gained	Exon 15 of 21	NP_004251.4	O94761
	RECQL4	NM_001413019.1		c.2585C>A	p.Ser862*	stop_gained	Exon 15 of 20	NP_001399948.1
	RECQL4	NM_001413036.1		c.2585C>A	p.Ser862*	stop_gained	Exon 15 of 21	NP_001399965.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RECQL4	ENST00000617875.6	TSL:1 MANE Select	c.2585C>A	p.Ser862*	stop_gained	Exon 15 of 21	ENSP00000482313.2	O94761
	RECQL4	ENST00000621189.4	TSL:1	c.1514C>A	p.Ser505*	stop_gained	Exon 14 of 20	ENSP00000483145.1	A0A087X072
	RECQL4	ENST00000971710.1		c.2492C>A	p.Ser831*	stop_gained	Exon 15 of 21	ENSP00000641769.1

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1419450 Hom.: 0 Cov.: 66 AF XY: 0.00 AC XY: 0 AN XY: 702364

African (AFR) AF: 0.00 AC: 0 AN: 32480

American (AMR) AF: 0.00 AC: 0 AN: 38118

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25430

East Asian (EAS) AF: 0.00 AC: 0 AN: 37246

South Asian (SAS) AF: 0.00 AC: 0 AN: 81282

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 49082

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5720

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1091272

Other (OTH) AF: 0.00 AC: 0 AN: 58820

GnomAD4 genome Cov.: 34

ClinVar

ClinVar submissions

Significance: Likely pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	RECQL4-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.28	D
BayesDel_noAF	Pathogenic	0.17
CADD	Pathogenic	32
DANN	Benign	0.54
FATHMM_MKL	Benign	0.069	N
PhyloP100		-1.8
Vest4		0.39
GERP RS		-0.80
PromoterAI		-0.0076	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.3
Mutation Taster		=5/195	disease causing (fs/PTC)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.15		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs781636798; hg19: chr8-145738400;