8-144514358-C-G

Position:

• chr8-144514358-C-G

Variant summary

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

The ENST00000617875.6(RECQL4):​c.1709G>C​(p.Arg570Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 8/13 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. R570Q) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 34)
• Consequence: RECQL4 ENST00000617875.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.463

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 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RECQL4	NM_004260.4	c.1709G>C	p.Arg570Pro	missense_variant	11/21	ENST00000617875.6	NP_004251.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RECQL4	ENST00000617875.6	c.1709G>C	p.Arg570Pro	missense_variant	11/21	1	NM_004260.4	ENSP00000482313	P1
RECQL4	ENST00000621189.4	c.638G>C	p.Arg213Pro	missense_variant	10/20	1		ENSP00000483145
RECQL4	ENST00000534626.6	c.80G>C	p.Arg27Pro	missense_variant	2/8	5		ENSP00000477457
RECQL4	ENST00000532846.2	c.566G>C	p.Arg189Pro	missense_variant	7/9	5		ENSP00000476551

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 36

GnomAD4 genome Cov.: 34

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.40
BayesDel_addAF	Benign	-0.037	T
BayesDel_noAF	Benign	-0.29
CADD	Benign	6.6
DANN	Benign	0.60
DEOGEN2	Benign	0.074	T;T
FATHMM_MKL	Benign	0.13	N
LIST_S2	Benign	0.67	T;T
M_CAP	Benign	0.0030	T
MetaRNN	Uncertain	0.44	T;T
PrimateAI	Benign	0.22	T
Sift4G	Benign	0.11	T;D
Polyphen		0.72	.;P
Vest4		0.57
MVP		0.76
GERP RS		-10
Varity_R		0.58
gMVP		0.80

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		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: rs755865911; hg19: chr8-145739742;