3-149039593-T-A

Position:

• chr3-149039593-T-A

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_003071.4(HLTF):​c.2603A>T​(p.Glu868Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: HLTF NM_003071.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.30

Genes affected

HLTF (HGNC:11099): (helicase like transcription factor) This gene encodes a member of the SWI/SNF family. Members of this family have helicase and ATPase activities and are thought to regulate transcription of certain genes by altering the chromatin structure around those genes. The encoded protein contains a RING finger DNA binding motif. Two transcript variants encoding the same protein have been found for this gene. However, use of an alternative translation start site produces an isoform that is truncated at the N-terminus compared to the full-length protein. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.826

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
HLTF	NM_003071.4	c.2603A>T	p.Glu868Val	missense_variant	22/25	ENST00000310053.10	NP_003062.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
HLTF	ENST00000310053.10	c.2603A>T	p.Glu868Val	missense_variant	22/25	1	NM_003071.4	ENSP00000308944	P4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 20

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 28, 2024

The c.2603A>T (p.E868V) alteration is located in exon 22 (coding exon 22) of the HLTF gene. This alteration results from a A to T substitution at nucleotide position 2603, causing the glutamic acid (E) at amino acid position 868 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.71
BayesDel_addAF	Pathogenic	0.38	D
BayesDel_noAF	Pathogenic	0.31
CADD	Pathogenic	28
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.47	.;T;T;T;D
Eigen	Pathogenic	0.84
Eigen_PC	Pathogenic	0.81
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.85	D;.;.;D;D
M_CAP	Uncertain	0.20	D
MetaRNN	Pathogenic	0.83	D;D;D;D;D
MetaSVM	Uncertain	0.43	D
MutationAssessor	Uncertain	2.6	.;M;M;M;.
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.52	T
PROVEAN	Pathogenic	-5.5	D;D;D;D;D
REVEL	Pathogenic	0.86
Sift	Uncertain	0.0010	D;D;D;D;D
Sift4G	Uncertain	0.0030	D;D;D;D;.
Polyphen		1.0	.;D;D;D;.
Vest4		0.81
MutPred		0.61		.;Gain of methylation at K872 (P = 0.0825);Gain of methylation at K872 (P = 0.0825);Gain of methylation at K872 (P = 0.0825);.;
MVP		0.91
MPC		0.52
ClinPred		1.0	D
GERP RS		5.8
Varity_R		0.51
gMVP		0.68

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: chr3-148757380;