Genetic Variant NM_018109.4:c.115G>C (chr10-30349161-C-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_018109.4(MTPAP):c.115G>C(p.Asp39His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,256 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D39Y) has been classified as Benign.

Frequency

Genomes: not found (cov: 28)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

MTPAP
NM_018109.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.547

Publications

0 publications found

Variant links:

Genes affected

MTPAP (HGNC:25532): (mitochondrial poly(A) polymerase) The protein encoded by this gene is a member of the DNA polymerase type-B-like family. This enzyme synthesizes the 3' poly(A) tail of mitochondrial transcripts and plays a role in replication-dependent histone mRNA degradation.[provided by RefSeq, Jan 2011]

MTPAP Gene-Disease associations (from GenCC):

mitochondrial disease
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
spastic ataxia 4
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)

MTPAP links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.24657878).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MTPAP	NM_018109.4 link	c.115G>C	p.Asp39His	missense_variant	Exon 1 of 9	ENST00000263063.9	NP_060579.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
MTPAP	ENST00000263063.9 link	c.115G>C	p.Asp39His	missense_variant	Exon 1 of 9	1	NM_018109.4	ENSP00000263063.3
MTPAP	ENST00000421701.1 link	c.1G>C	p.Asp1His	missense_variant	Exon 1 of 3	2		ENSP00000394118.1
MTPAP	ENST00000488290.5 link	n.1913-7521G>C		intron_variant	Intron 9 of 16	2
MTPAP	ENST00000417581.1 link	c.-343G>C		upstream_gene_variant		5		ENSP00000404392.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461256

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726904

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33468

American (AMR)

AF:

0.00

AC:

AN:

44694

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26120

East Asian (EAS)

AF:

0.00

AC:

AN:

39690

South Asian (SAS)

AF:

0.00

AC:

AN:

86246

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53370

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5760

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111550

Other (OTH)

AF:

0.00

AC:

AN:

60358

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.15

BayesDel_noAF

Benign

-0.45

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.014

T;.

Eigen

Benign

-0.043

Eigen_PC

Benign

-0.22

FATHMM_MKL

Benign

0.0

LIST_S2

Benign

0.50

T;D

M_CAP

Benign

0.0067

MetaRNN

Benign

0.14

T;T

MetaSVM

Benign

-0.93

MutationAssessor

Benign

1.9

L;.

PhyloP100

0.55

PrimateAI

Benign

0.34

PROVEAN

Benign

-0.20

N;N

REVEL

Benign

0.079

Sift

Benign

0.062

T;D

Sift4G

Benign

0.077

T;D

Polyphen

0.98

D;D

Vest4

0.18

MutPred

0.12

Loss of ubiquitination at K38 (P = 0.0248);.;

MVP

0.43

MPC

0.43

ClinPred

0.23

GERP RS

3.3

PromoterAI

-0.15

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.048

gMVP

0.41

Mutation Taster

=97/3

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over