Variant 2-42770521-C-T details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_012205.3(HAAO):c.412G>A(p.Gly138Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000399 in 1,552,768 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000042 ( 0 hom. )

Consequence

HAAO
NM_012205.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.89

Variant links:

Genes affected

HAAO (HGNC:4796): (3-hydroxyanthranilate 3,4-dioxygenase) 3-Hydroxyanthranilate 3,4-dioxygenase is a monomeric cytosolic protein belonging to the family of intramolecular dioxygenases containing nonheme ferrous iron. It is widely distributed in peripheral organs, such as liver and kidney, and is also present in low amounts in the central nervous system. HAAO catalyzes the synthesis of quinolinic acid (QUIN) from 3-hydroxyanthranilic acid. QUIN is an excitotoxin whose toxicity is mediated by its ability to activate glutamate N-methyl-D-aspartate receptors. Increased cerebral levels of QUIN may participate in the pathogenesis of neurologic and inflammatory disorders. HAAO has been suggested to play a role in disorders associated with altered tissue levels of QUIN. [provided by RefSeq, Jul 2008]

HAAO links:

HAAO (HGNC:):

HAAO links:

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ACMG classification

Classification made for transcript

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
HAAO	NM_012205.3 linkuse as main transcript	c.412G>A	p.Gly138Ser	missense_variant	5/10	ENST00000294973.11	NP_036337.2	P46952-1
HAAO	XM_011532730.4 linkuse as main transcript	c.310G>A	p.Gly104Ser	missense_variant	6/11		XP_011531032.1
HAAO	XM_011532729.4 linkuse as main transcript	c.351-335G>A		intron_variant			XP_011531031.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
HAAO	ENST00000294973.11 linkuse as main transcript	c.412G>A	p.Gly138Ser	missense_variant	5/10	1	NM_012205.3	ENSP00000294973.6		P46952-1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152172

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000421

AC:

AN:

1400596

Hom.:

Cov.:

AF XY:

0.0000463

AC XY:

AN XY:

691114

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000111

Gnomad4 SAS exome

AF:

0.000164

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000380

Gnomad4 OTH exome

AF:

0.0000172

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152172

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74328

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ExAC

AF:

0.00000940

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 19, 2023

The c.412G>A (p.G138S) alteration is located in exon 5 (coding exon 5) of the HAAO gene. This alteration results from a G to A substitution at nucleotide position 412, causing the glycine (G) at amino acid position 138 to be replaced by a serine (S). 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

Benign

0.14

BayesDel_addAF

Benign

-0.090

BayesDel_noAF

Benign

-0.37

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.12

T;.

Eigen

Uncertain

0.35

Eigen_PC

Uncertain

0.31

FATHMM_MKL

Benign

0.61

LIST_S2

Benign

0.85

T;T

M_CAP

Benign

0.039

MetaRNN

Uncertain

0.57

D;D

MetaSVM

Benign

-0.86

MutationAssessor

Uncertain

2.8

M;.

PrimateAI

Uncertain

0.57

PROVEAN

Pathogenic

-4.8

D;D

REVEL

Uncertain

0.31

Sift

Benign

0.073

T;D

Sift4G

Benign

0.12

T;.

Polyphen

1.0

D;.

Vest4

0.47

MutPred

0.66

Loss of ubiquitination at K135 (P = 0.1403);.;

MVP

0.52

MPC

0.23

ClinPred

0.94

GERP RS

4.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.57

gMVP

0.76

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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