rs755687763

Positions:

• chr8-144516520-T-A
• chr8-144516520-T-C
• chr8-144516520-T-G

Variant summary

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

The NM_004260.4(RECQL4):​c.599A>T​(p.Asp200Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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. D200G) 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: 0.400

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	UniProt
RECQL4	NM_004260.4	c.599A>T	p.Asp200Val	missense_variant	5/21	ENST00000617875.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RECQL4	ENST00000617875.6	c.599A>T	p.Asp200Val	missense_variant	5/21	1	NM_004260.4	P1
RECQL4	ENST00000621189.4	c.-473A>T		5_prime_UTR_variant	4/20	1
RECQL4	ENST00000524998.1	c.228-107A>T		intron_variant		3
RECQL4	ENST00000534538.1	c.*403A>T		3_prime_UTR_variant, NMD_transcript_variant	4/4	3

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 34

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Uncertain	0.13	D
BayesDel_noAF	Uncertain	-0.050
CADD	Benign	16
DANN	Benign	0.76
DEOGEN2	Benign	0.23	T
FATHMM_MKL	Benign	0.31	N
LIST_S2	Benign	0.59	T
M_CAP	Benign	0.0075	T
MetaRNN	Uncertain	0.58	D
PrimateAI	Benign	0.32	T
Sift4G	Uncertain	0.035	D
Polyphen		0.93	P
Vest4		0.52
MVP		0.76
GERP RS		3.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.18
gMVP		0.31

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

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: chr8-145741904;