8-144515803-C-G

Position:

• chr8-144515803-C-G

Variant summary

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

The NM_004260.4(RECQL4):​c.1219G>C​(p.Glu407Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 9/15 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. E407K) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 34)
• Consequence: RECQL4 NM_004260.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.98

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.1219G>C	p.Glu407Gln	missense_variant	6/21	ENST00000617875.6	NP_004251.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RECQL4	ENST00000617875.6	c.1219G>C	p.Glu407Gln	missense_variant	6/21	1	NM_004260.4	ENSP00000482313	P1
RECQL4	ENST00000621189.4	c.148G>C	p.Glu50Gln	missense_variant	5/20	1		ENSP00000483145
RECQL4	ENST00000532846.2	c.106G>C	p.Glu36Gln	missense_variant	2/9	5		ENSP00000476551

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 65

GnomAD4 genome Cov.: 34

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.082
BayesDel_addAF	Benign	-0.10	T
BayesDel_noAF	Benign	-0.39
CADD	Benign	15
DANN	Benign	0.61
DEOGEN2	Benign	0.013	T;T
FATHMM_MKL	Benign	0.48	N
LIST_S2	Benign	0.63	T;T
M_CAP	Benign	0.0043	T
MetaRNN	Benign	0.18	T;T
PrimateAI	Benign	0.29	T
Sift4G	Uncertain	0.014	D;D
Polyphen		0.83	.;P
Vest4		0.20
MVP		0.75
GERP RS		5.5
Varity_R		0.15
gMVP		0.41

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.39		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.39		Position offset: -3

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr8-145741187;