rs781569277

Positions:

• chr8-144516334-C-A
• chr8-144516334-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The ENST00000617875.6(RECQL4):​c.785G>T​(p.Arg262Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000686 in 1,457,360 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 10/13 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R262W) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: RECQL4 ENST00000617875.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.67

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.070248395).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RECQL4	NM_004260.4	c.785G>T	p.Arg262Leu	missense_variant	5/21	ENST00000617875.6	NP_004251.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RECQL4	ENST00000617875.6	c.785G>T	p.Arg262Leu	missense_variant	5/21	1	NM_004260.4	ENSP00000482313	P1
RECQL4	ENST00000621189.4	c.-287G>T		5_prime_UTR_variant	4/20	1		ENSP00000483145
RECQL4	ENST00000524998.1	c.308G>T	p.Arg103Leu	missense_variant	3/4	3		ENSP00000476579
RECQL4	ENST00000534538.1	c.*589G>T		3_prime_UTR_variant, NMD_transcript_variant	4/4	3		ENSP00000476318

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD3 exomes AF: 0.00000411 AC: 1 AN: 243366 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 132844

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000562

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.86e-7 AC: 1 AN: 1457360 Hom.: 0 Cov.: 64 AF XY: 0.00 AC XY: 0 AN XY: 724882

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 34

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.095
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.38
CADD	Benign	0.018
DANN	Benign	0.49
DEOGEN2	Benign	0.10	T
FATHMM_MKL	Benign	0.040	N
LIST_S2	Benign	0.50	T
M_CAP	Benign	0.0041	T
MetaRNN	Benign	0.070	T
PrimateAI	Benign	0.19	T
Sift4G	Benign	0.20	T
Polyphen		0.0080	B
Vest4		0.25
MVP		0.70
GERP RS		-7.8
RBP_binding_hub_radar		0.92
RBP_regulation_power_radar		2.0
Varity_R		0.061
gMVP		0.24

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

Other links and lift over

dbSNP: rs781569277; hg19: chr8-145741718;