chr5-131159473-G-A

Position:

chr5-131159473-G-A

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM1PM2PP3_ModeratePP5

The NM_005340.7(HINT1):c.355C>T(p.Arg119Trp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000992 in 1,612,108 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R119G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000096 ( 0 hom. )

Consequence

HINT1
NM_005340.7 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:1

Conservation

PhyloP100: 7.27

Variant links:

Genes affected

HINT1 (HGNC:4912): (histidine triad nucleotide binding protein 1) This gene encodes a protein that hydrolyzes purine nucleotide phosphoramidates substrates, including AMP-morpholidate, AMP-N-alanine methyl ester, AMP-alpha-acetyl lysine methyl ester, and AMP-NH2. The encoded protein interacts with these substrates via a histidine triad motif. This gene is considered a tumor suppressor gene. In addition, mutations in this gene can cause autosomal recessive neuromyotonia and axonal neuropathy. There are several related pseudogenes on chromosome 7. Several transcript variants have been observed. [provided by RefSeq, Dec 2015]

HINT1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

PM1

In a chain Adenosine 5'-monophosphoramidase HINT1 (size 124) in uniprot entity HINT1_HUMAN there are 18 pathogenic changes around while only 0 benign (100%) in NM_005340.7

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.887

PP5

Variant 5-131159473-G-A is Pathogenic according to our data. Variant chr5-131159473-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 978220.We mark this variant Likely_pathogenic, oryginal submissions are: {Pathogenic=1, Uncertain_significance=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HINT1	NM_005340.7 linkuse as main transcript	c.355C>T	p.Arg119Trp	missense_variant	3/3	ENST00000304043.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HINT1	ENST00000304043.10 linkuse as main transcript	c.355C>T	p.Arg119Trp	missense_variant	3/3	1	NM_005340.7	P1

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

151902

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000797

AC:

AN:

251078

Hom.:

AF XY:

0.00000737

AC XY:

AN XY:

135698

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000959

AC:

AN:

1460206

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

726474

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000117

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000132

AC:

AN:

151902

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74148

show subpopulations

Gnomad4 AFR

AF:

0.0000242

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1Uncertain:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Autosomal recessive axonal neuropathy with neuromyotonia

Pathogenic:1Uncertain:1

Uncertain significance, criteria provided, single submitter	clinical testing	Invitae	Dec 01, 2020	In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). This variant has been observed in individual(s) with clinical features of myotonia (PMID: 31400136). ClinVar contains an entry for this variant (Variation ID: 978220). This variant is present in population databases (rs768248277, ExAC 0.009%). This sequence change replaces arginine with tryptophan at codon 119 of the HINT1 protein (p.Arg119Trp). The arginine residue is moderately conserved and there is a moderate physicochemical difference between arginine and tryptophan. -
Pathogenic, criteria provided, single submitter	research	Medical Genetics Laboratory, West China Hospital, Sichuan University	-	A homozygous missense variant of c.355C>T (p.His119Trp) was identified in the HINT1 gene in a patient affected with axonal neuropathy with neuromyotonia, which was confirmed as having been transmitted from the parents. The p.His119 site is highly conserved during evolution. The SIFT, Polyphen-2 and Provean softwares predict that the variant is damaging. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.65

BayesDel_addAF

Uncertain

0.14

BayesDel_noAF

Uncertain

0.040

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.91

Eigen

Uncertain

0.42

Eigen_PC

Uncertain

0.38

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.85

M_CAP

Uncertain

0.26

MetaRNN

Pathogenic

0.89

MetaSVM

Uncertain

0.49

MutationAssessor

Uncertain

2.8

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.75

PROVEAN

Pathogenic

-7.5

REVEL

Pathogenic

0.70

Sift

Benign

0.036

Sift4G

Uncertain

0.051

Polyphen

0.90

Vest4

0.79

MutPred

0.68

Loss of disorder (P = 0.0174);

MVP

0.98

MPC

0.49

ClinPred

0.98

GERP RS

3.0

Varity_R

0.84

gMVP

0.84

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.080

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over