Genetic Variant NM_020186.3:c.136G>A (chr7-97117859-G-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

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

The NM_020186.3(SDHAF3):c.136G>A(p.Gly46Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,882 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/19 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

SDHAF3
NM_020186.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.09

Variant links:

Genes affected

SDHAF3 (HGNC:21752): (succinate dehydrogenase complex assembly factor 3) Predicted to be involved in mitochondrial respiratory chain complex II assembly; regulation of gluconeogenesis; and succinate metabolic process. Predicted to be located in mitochondrial matrix. Predicted to be active in mitochondrial intermembrane space. [provided by Alliance of Genome Resources, Apr 2022]

SDHAF3 links:

Genome browser will be placed here

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=0.110943824).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SDHAF3	NM_020186.3 link	c.136G>A	p.Gly46Ser	missense_variant	Exon 1 of 2	ENST00000432641.3	NP_064571.1	Q9NRP4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SDHAF3	ENST00000432641.3 link	c.136G>A	p.Gly46Ser	missense_variant	Exon 1 of 2	1	NM_020186.3	ENSP00000414066.2	Q9NRP4
SDHAF3	ENST00000360382.4 link	c.136G>A	p.Gly46Ser	missense_variant	Exon 1 of 3	2		ENSP00000353548.4	F8W9V1
SDHAF3	ENST00000489852.1 link	n.159G>A		non_coding_transcript_exon_variant	Exon 1 of 2	3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000401

AC:

AN:

249104

Hom.:

AF XY:

0.00

AC XY:

AN XY:

134832

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:

0.00000898

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000342

AC:

AN:

1461882

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727246

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

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:

0.00000360

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

Dec 22, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.136G>A (p.G46S) alteration is located in exon 1 (coding exon 1) of the SDHAF3 gene. This alteration results from a G to A substitution at nucleotide position 136, causing the glycine (G) at amino acid position 46 to be replaced by a serine (S). 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

0.10

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.43

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.015

T;.

Eigen

Benign

-0.18

Eigen_PC

Benign

-0.043

FATHMM_MKL

Benign

0.60

LIST_S2

Benign

0.69

T;T

M_CAP

Benign

0.0058

MetaRNN

Benign

0.11

T;T

MetaSVM

Benign

-1.0

PrimateAI

Benign

0.34

PROVEAN

Benign

-0.29

N;N

REVEL

Benign

0.077

Sift

Benign

0.45

T;T

Sift4G

Benign

0.77

T;T

Polyphen

0.45

B;.

Vest4

0.14

MutPred

0.24

Gain of phosphorylation at G46 (P = 0.0545);Gain of phosphorylation at G46 (P = 0.0545);

MVP

0.15

MPC

0.40

ClinPred

0.78

GERP RS

4.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.12

gMVP

0.10

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.090

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