11-61430149-G-C

Variant names:

• chr11-61430149-G-C
• NM_017841.4:c.3G>C

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PVS1_Supporting PM2

The NM_017841.4(SDHAF2):​c.3G>C​(p.Met1?) variant causes a start lost change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: SDHAF2 NM_017841.4 start_lost
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.17

Genes affected

SDHAF2 (HGNC:26034): (succinate dehydrogenase complex assembly factor 2) This gene encodes a mitochondrial assembly factor needed for the flavination of a succinate dehydrogenase complex subunit (SDHA), which is required for activity of the succinate dehydrogenase complex. Mutations in this gene are associated with paraganglioma. [provided by RefSeq, May 2022]

ENSG00000256591 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PVS1: Start lost variant, no pathogenic variants between lost start and next in-frame start position. Next in-frame start position is after 13 codons. Genomic position: 61437625. Lost 0.074 part of the original CDS.
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SDHAF2	NM_017841.4	c.3G>C	p.Met1?	start_lost	Exon 1 of 4	ENST00000301761.7	NP_060311.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SDHAF2	ENST00000301761.7	c.3G>C	p.Met1?	start_lost	Exon 1 of 4	1	NM_017841.4	ENSP00000301761.3
ENSG00000256591	ENST00000541135.5	c.3G>C	p.Met1?	start_lost	Exon 1 of 5	4		ENSP00000443130.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

May 01, 2024

Quest Diagnostics Nichols Institute San Juan Capistrano

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The SDHAF2 c.3G>C variant disrupts the translation initiation codon of the SDHAF2 mRNA and is predicted to interfere with SDHAF2 protein synthesis. This variant has not been reported in individuals with SDHAF2-related conditions in the published literature. This variant has not been reported in large, multi-ethnic general populations (Genome Aggregation Database, http://gnomad.broadinstitute.org). Based on the available information, we are unable to determine the clinical significance of this variant. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.30
CADD	Benign	22
DANN	Uncertain	0.98
DEOGEN2	Benign	0.019	.;T;.;.;.;.
Eigen	Uncertain	0.39
Eigen_PC	Uncertain	0.35
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Uncertain	0.90	D;D;D;D;D;D
M_CAP	Pathogenic	0.75	D
MetaRNN	Pathogenic	0.99	D;D;D;D;D;D
MetaSVM	Benign	-0.32	T
PROVEAN	Benign	-0.41	N;N;.;.;.;N
REVEL	Uncertain	0.48
Sift	Pathogenic	0.0	D;D;.;.;.;D
Sift4G	Benign	0.099	T;T;.;T;T;T
Polyphen		0.85	.;P;.;.;.;.
Vest4		0.90, 0.93, 0.91, 0.91, 0.86
MutPred		0.97		Gain of catalytic residue at M1 (P = 0.024);Gain of catalytic residue at M1 (P = 0.024);Gain of catalytic residue at M1 (P = 0.024);Gain of catalytic residue at M1 (P = 0.024);Gain of catalytic residue at M1 (P = 0.024);Gain of catalytic residue at M1 (P = 0.024);
MVP		0.62
ClinPred		1.0	D
GERP RS		4.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.96
gMVP		0.41

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr11-61197621;