rs776616498

chr8-144514214-C-Achr8-144514214-C-Gchr8-144514214-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_004260.4(RECQL4):c.1853G>T(p.Arg618Leu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic 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. R618Q) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 34)
• Consequence: RECQL4 NM_004260.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.65

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 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.86

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RECQL4	NM_004260.4	c.1853G>T	p.Arg618Leu	missense_variant	11/21	ENST00000617875.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RECQL4	ENST00000617875.6	c.1853G>T	p.Arg618Leu	missense_variant	11/21	1	NM_004260.4	P1
RECQL4	ENST00000621189.4	c.782G>T	p.Arg261Leu	missense_variant	10/20	1
RECQL4	ENST00000534626.6	c.224G>T	p.Arg75Leu	missense_variant	2/8	5
RECQL4	ENST00000532846.2	c.710G>T	p.Arg237Leu	missense_variant	7/9	5

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	Pathogenic	0.75
BayesDel_addAF	Pathogenic	0.54	D
BayesDel_noAF	Pathogenic	0.54
Cadd	Pathogenic	31
Dann	Benign	0.93
DEOGEN2	Benign	0.27	T;T
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Pathogenic	0.98	D;D
M_CAP	Uncertain	0.17	D
MetaRNN	Pathogenic	0.86	D;D
PrimateAI	Uncertain	0.66	T
Sift4G	Uncertain	0.0030	D;D
Polyphen		1.0	.;D
Vest4		0.94
MVP		0.78
GERP RS		5.0
Varity_R		0.92
gMVP		0.80

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: rs776616498; hg19: chr8-145739598;