Variant 16-4509414-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_002134.4(HMOX2):c.699A>G(p.Ile233Met) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,766 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I233L) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

HMOX2
NM_002134.4 missense, splice_region

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.241

Variant links:

Genes affected

HMOX2 (HGNC:5014): (heme oxygenase 2) Heme oxygenase, an essential enzyme in heme catabolism, cleaves heme to form biliverdin, which is subsequently converted to bilirubin by biliverdin reductase, and carbon monoxide, a putative neurotransmitter. Heme oxygenase activity is induced by its substrate heme and by various nonheme substances. Heme oxygenase occurs as 2 isozymes, an inducible heme oxygenase-1 and a constitutive heme oxygenase-2. HMOX1 and HMOX2 belong to the heme oxygenase family. Several alternatively spliced transcript variants encoding three different isoforms have been found for this gene. [provided by RefSeq, Oct 2013]

HMOX2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.20953292).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HMOX2	NM_002134.4 linkuse as main transcript	c.699A>G	p.Ile233Met	missense_variant, splice_region_variant	5/6	ENST00000570646.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HMOX2	ENST00000570646.6 linkuse as main transcript	c.699A>G	p.Ile233Met	missense_variant, splice_region_variant	5/6	1	NM_002134.4	P1	P30519-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461766

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727188

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.0000113

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

Jan 24, 2024

The c.699A>G (p.I233M) alteration is located in exon 6 (coding exon 4) of the HMOX2 gene. This alteration results from a A to G substitution at nucleotide position 699, causing the isoleucine (I) at amino acid position 233 to be replaced by a methionine (M). 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

0.19

BayesDel_addAF

Benign

-0.10

BayesDel_noAF

Benign

-0.38

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.20

.;T;T;T;T;T;T;.;T;T;T

Eigen

Benign

-0.34

Eigen_PC

Benign

-0.36

FATHMM_MKL

Benign

0.38

LIST_S2

Uncertain

0.87

D;.;.;.;.;D;.;D;.;.;D

M_CAP

Benign

0.0095

MetaRNN

Benign

0.21

T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.47

.;N;N;N;N;N;N;.;N;N;.

MutationTaster

Benign

0.98

D;D;D;D;D;D;D

PrimateAI

Benign

0.41

PROVEAN

Benign

-0.95

.;N;.;N;.;.;N;.;N;N;.

REVEL

Benign

0.22

Sift

Benign

0.14

.;T;.;T;.;.;T;.;T;T;.

Sift4G

Benign

0.73

T;T;T;T;T;T;T;T;T;T;T

Polyphen

0.76

.;P;P;P;P;P;P;.;P;P;.

Vest4

0.63, 0.63, 0.64, 0.63, 0.64

MutPred

0.71

Gain of disorder (P = 0.0308);Gain of disorder (P = 0.0308);Gain of disorder (P = 0.0308);Gain of disorder (P = 0.0308);Gain of disorder (P = 0.0308);Gain of disorder (P = 0.0308);Gain of disorder (P = 0.0308);.;Gain of disorder (P = 0.0308);Gain of disorder (P = 0.0308);.;

MVP

0.27

MPC

0.17

ClinPred

0.30

GERP RS

-1.8

Varity_R

0.30

gMVP

0.65

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

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