Variant 6-31727559-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4BS2

The NM_001303007.2(DDAH2):c.725T>C(p.Leu242Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000496 in 1,612,990 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

DDAH2
NM_001303007.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.02

Variant links:

Genes affected

DDAH2 (HGNC:2716): (DDAH family member 2, ADMA-independent) This gene encodes a dimethylarginine dimethylaminohydrolase. The encoded enzyme functions in nitric oxide generation by regulating the cellular concentrations of methylarginines, which in turn inhibit nitric oxide synthase activity. The protein may be localized to the mitochondria. Alternative splicing resulting in multiple transcript variants. [provided by RefSeq, Dec 2014]

DDAH2 links:

DDAH2 (HGNC:):

DDAH2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.4000743).

BS2

High AC in GnomAdExome4 at 7 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DDAH2	NM_001303007.2 linkuse as main transcript	c.725T>C	p.Leu242Pro	missense_variant	5/6	ENST00000375789.7	NP_001289936.1	O95865V9HW53
DDAH2	NM_001303008.2 linkuse as main transcript	c.725T>C	p.Leu242Pro	missense_variant	6/7		NP_001289937.1	O95865V9HW53
DDAH2	NM_013974.3 linkuse as main transcript	c.725T>C	p.Leu242Pro	missense_variant	6/7		NP_039268.1	O95865V9HW53
DDAH2	XM_011514448.3 linkuse as main transcript	c.725T>C	p.Leu242Pro	missense_variant	6/7		XP_011512750.1	O95865V9HW53

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DDAH2	ENST00000375789.7 linkuse as main transcript	c.725T>C	p.Leu242Pro	missense_variant	5/6	2	NM_001303007.2	ENSP00000364945.2		O95865

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.00000405

AC:

AN:

246798

Hom.:

AF XY:

0.00

AC XY:

AN XY:

134452

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.00000902

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000479

AC:

AN:

1460770

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

726702

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:

0.00000629

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152220

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74370

show subpopulations

Gnomad4 AFR

AF:

0.00

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

Alfa

AF:

0.0000312

Hom.:

Bravo

AF:

0.0000151

ExAC

AF:

0.00000845

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

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

Dec 04, 2024

The c.725T>C (p.L242P) alteration is located in exon 6 (coding exon 5) of the DDAH2 gene. This alteration results from a T to C substitution at nucleotide position 725, causing the leucine (L) at amino acid position 242 to be replaced by a proline (P). 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

0.63

BayesDel_addAF

Uncertain

0.052

BayesDel_noAF

Benign

-0.15

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.16

T;T;T

Eigen

Uncertain

0.26

Eigen_PC

Uncertain

0.32

FATHMM_MKL

Uncertain

0.86

M_CAP

Benign

0.010

MetaRNN

Benign

0.40

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.34

N;N;N

PrimateAI

Uncertain

0.65

PROVEAN

Uncertain

-3.0

D;D;D

REVEL

Benign

0.25

Sift

Benign

0.10

T;T;T

Sift4G

Benign

0.14

T;T;T

Polyphen

0.97

D;D;D

Vest4

0.50

MutPred

0.62

Gain of disorder (P = 0.0221);Gain of disorder (P = 0.0221);Gain of disorder (P = 0.0221);

MVP

0.34

MPC

2.4

ClinPred

0.80

GERP RS

4.2

Varity_R

0.20

gMVP

0.64

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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