Variant 2-42767878-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 0P and 1B. BS1_Supporting

The NM_012205.3(HAAO):c.681C>T(p.Asp227=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00228 in 1,614,010 control chromosomes in the GnomAD database, including 7 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0017 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0023 ( 7 hom. )

Consequence

HAAO
NM_012205.3 synonymous

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.514

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:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00165 (252/152374) while in subpopulation NFE AF= 0.00288 (196/68032). AF 95% confidence interval is 0.00255. There are 0 homozygotes in gnomad4. There are 96 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
HAAO	NM_012205.3 linkuse as main transcript	c.681C>T	p.Asp227=	synonymous_variant	8/10	ENST00000294973.11
HAAO	XM_011532729.4 linkuse as main transcript	c.591C>T	p.Asp197=	synonymous_variant	7/9
HAAO	XM_011532730.4 linkuse as main transcript	c.579C>T	p.Asp193=	synonymous_variant	9/11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HAAO	ENST00000294973.11 linkuse as main transcript	c.681C>T	p.Asp227=	synonymous_variant	8/10	1	NM_012205.3	P1	P46952-1
HAAO	ENST00000402698.6 linkuse as main transcript	n.1025C>T		non_coding_transcript_exon_variant	7/9	5
HAAO	ENST00000404451.7 linkuse as main transcript	n.440C>T		non_coding_transcript_exon_variant	6/6	3
HAAO	ENST00000406007.6 linkuse as main transcript	n.232C>T		non_coding_transcript_exon_variant	2/4	2

Frequencies

GnomAD3 genomes

AF:

0.00166

AC:

252

AN:

152256

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000699

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000785

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.000620

Gnomad FIN

AF:

0.00104

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00288

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00154

AC:

386

AN:

251360

Hom.:

AF XY:

0.00149

AC XY:

202

AN XY:

135850

show subpopulations

Gnomad AFR exome

AF:

0.000677

Gnomad AMR exome

AF:

0.000492

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000109

Gnomad SAS exome

AF:

0.000229

Gnomad FIN exome

AF:

0.000647

Gnomad NFE exome

AF:

0.00289

Gnomad OTH exome

AF:

0.00114

GnomAD4 exome

AF:

0.00234

AC:

3423

AN:

1461636

Hom.:

Cov.:

AF XY:

0.00233

AC XY:

1692

AN XY:

727130

show subpopulations

Gnomad4 AFR exome

AF:

0.000538

Gnomad4 AMR exome

AF:

0.000514

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000290

Gnomad4 FIN exome

AF:

0.000618

Gnomad4 NFE exome

AF:

0.00291

Gnomad4 OTH exome

AF:

0.00144

GnomAD4 genome

AF:

0.00165

AC:

252

AN:

152374

Hom.:

Cov.:

AF XY:

0.00129

AC XY:

AN XY:

74518

show subpopulations

Gnomad4 AFR

AF:

0.000697

Gnomad4 AMR

AF:

0.000784

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.000621

Gnomad4 FIN

AF:

0.00104

Gnomad4 NFE

AF:

0.00288

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.00204

Hom.:

Bravo

AF:

0.00157

EpiCase

AF:

0.00202

EpiControl

AF:

0.00213

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Mar 08, 2022

Has not been previously published as pathogenic or benign to our knowledge; In-silico analysis is inconclusive as to whether the variant alters gene splicing. In the absence of RNA/functional studies, the actual effect of this sequence change is unknown. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.64

Cadd

Benign

5.1

Dann

Benign

0.81

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.24

Details are displayed if max score is > 0.2

DS_DL_spliceai

0.24

Position offset: -18

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