8-144511447-A-G

Variant names:

• chr8-144511447-A-G
• rs2130647931
• NM_004260.4:c.3611T>C

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_004260.4(RECQL4):​c.3611T>C​(p.Leu1204Pro) 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. 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. L1204M) 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: 0.462
• Publications: 0 publications found

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]

SLC33A2 (HGNC:25157): (major facilitator superfamily domain containing 3) Predicted to enable solute:proton symporter activity. Predicted to be involved in proton transmembrane transport. Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.41464627).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004260.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RECQL4	NM_004260.4	MANE Select	c.3611T>C	p.Leu1204Pro	missense	Exon 21 of 21	NP_004251.4	O94761
	RECQL4	NM_001413019.1		c.3686T>C	p.Leu1229Pro	missense	Exon 20 of 20	NP_001399948.1
	RECQL4	NM_001413036.1		c.3620T>C	p.Leu1207Pro	missense	Exon 21 of 21	NP_001399965.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RECQL4	ENST00000617875.6	TSL:1 MANE Select	c.3611T>C	p.Leu1204Pro	missense	Exon 21 of 21	ENSP00000482313.2	O94761
	RECQL4	ENST00000621189.4	TSL:1	c.2540T>C	p.Leu847Pro	missense	Exon 20 of 20	ENSP00000483145.1	A0A087X072
	RECQL4	ENST00000971710.1		c.3518T>C	p.Leu1173Pro	missense	Exon 21 of 21	ENSP00000641769.1

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 34

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.46
BayesDel_addAF	Pathogenic	0.27	D
BayesDel_noAF	Pathogenic	0.14
CADD	Benign	23
DANN	Benign	0.77
DEOGEN2	Benign	0.20	T
FATHMM_MKL	Uncertain	0.86	D
LIST_S2	Benign	0.43	T
M_CAP	Benign	0.026	D
MetaRNN	Benign	0.41	T
MutationAssessor	Pathogenic	3.0	M
PhyloP100		0.46
PrimateAI	Benign	0.39	T
Sift4G	Uncertain	0.0020	D
Polyphen		1.0	D
Vest4		0.77
MVP		0.52
GERP RS		3.8
Varity_R		0.51
gMVP		0.78
Mutation Taster		=53/47	polymorphism

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

Other links and lift over

dbSNP: rs2130647931; hg19: chr8-145736830;