NM_032193.4:c.115G>A

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM1BP4_Moderate

The NM_032193.4(RNASEH2C):c.115G>A(p.Asp39Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000572 in 1,572,138 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. 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. D39Y) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

RNASEH2C
NM_032193.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.257

Publications

3 publications found

Variant links:

Genes affected

RNASEH2C (HGNC:24116): (ribonuclease H2 subunit C) This gene encodes a ribonuclease H subunit that can cleave ribonucleotides from RNA:DNA duplexes. Mutations in this gene cause Aicardi-Goutieres syndrome-3, a disease that causes severe neurologic dysfunction. A pseudogene for this gene has been identified on chromosome Y, near the sex determining region Y (SRY) gene. [provided by RefSeq, Jul 2008]

RNASEH2C Gene-Disease associations (from GenCC):

Aicardi-Goutieres syndrome 3
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, PanelApp Australia
Aicardi-Goutieres syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

RNASEH2C links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM1

In a chain Ribonuclease H2 subunit C (size 163) in uniprot entity RNH2C_HUMAN there are 7 pathogenic changes around while only 2 benign (78%) in NM_032193.4

BP4

Computational evidence support a benign effect (MetaRNN=0.10439736).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RNASEH2C	NM_032193.4 link	c.115G>A	p.Asp39Asn	missense_variant	Exon 1 of 4	ENST00000308418.10	NP_115569.2	Q8TDP1A0A024R5B3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RNASEH2C	ENST00000308418.10 link	c.115G>A	p.Asp39Asn	missense_variant	Exon 1 of 4	1	NM_032193.4	ENSP00000308193.5		Q8TDP1

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152232

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:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000547

AC:

AN:

182918

AF XY:

0.00

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000128

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000211

AC:

AN:

1419906

Hom.:

Cov.:

AF XY:

0.00000284

AC XY:

AN XY:

703640

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32290

American (AMR)

AF:

0.00

AC:

AN:

40376

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25464

East Asian (EAS)

AF:

0.00

AC:

AN:

37046

South Asian (SAS)

AF:

0.00

AC:

AN:

81780

European-Finnish (FIN)

AF:

0.00

AC:

AN:

44244

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4922

European-Non Finnish (NFE)

AF:

0.00000274

AC:

AN:

1095018

Other (OTH)

AF:

0.00

AC:

AN:

58766

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152232

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74376

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41474

American (AMR)

AF:

0.00

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000193

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68032

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.517

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000189

Hom.:

ExAC

AF:

0.00000836

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Aicardi-Goutieres syndrome 3

Uncertain:1

Aug 20, 2021

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces aspartic acid with asparagine at codon 39 of the RNASEH2C protein (p.Asp39Asn). The aspartic acid residue is weakly conserved and there is a small physicochemical difference between aspartic acid and asparagine. This variant is present in population databases (rs773527127, ExAC 0.009%). This variant has not been reported in the literature in individuals affected with RNASEH2C-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The asparagine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.081

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.40

CADD

Benign

6.7

(source)

DANN

Benign

0.86

DEOGEN2

Uncertain

0.48

T;.

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.022

LIST_S2

Benign

0.71

.;T

M_CAP

Uncertain

0.27

MetaRNN

Benign

0.10

T;T

MetaSVM

Benign

-0.68

MutationAssessor

Benign

-0.42

N;.

PhyloP100

0.26

PrimateAI

Uncertain

0.49

PROVEAN

Benign

-0.69

N;N

REVEL

Benign

0.21

Sift

Benign

1.0

T;T

Sift4G

Benign

1.0

T;T

Polyphen

0.0

B;.

Vest4

0.093

MutPred

0.67

Loss of helix (P = 0.1299);Loss of helix (P = 0.1299);

MVP

0.16

MPC

0.39

ClinPred

0.033

GERP RS

2.0

PromoterAI

0.083

Neutral

(source)

Varity_R

0.29

gMVP

0.44

Mutation Taster

=79/21

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

NM_032193.4:c.115G>A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over