chr11-61430148-T-A

Position:

• chr11-61430148-T-A

Variant summary

Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PVS1 PM2

The NM_017841.4(SDHAF2):​c.2T>A​(p.Met1?) variant causes a start lost change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,842 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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: 6.8e-7 (0 hom.)
• Consequence: SDHAF2 NM_017841.4 start_lost
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.34

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]

(HGNC:):

ACMG classification

Verdict is Pathogenic. Variant got 10 ACMG points.

• PVS1: Start lost variant, no new inframe start found.
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SDHAF2	NM_017841.4	c.2T>A	p.Met1?	start_lost	1/4	ENST00000301761.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SDHAF2	ENST00000301761.7	c.2T>A	p.Met1?	start_lost	1/4	1	NM_017841.4	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.00000399 AC: 1 AN: 250658 Hom.: 0 AF XY: 0.00000737 AC XY: 1 AN XY: 135620

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000289

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: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461842 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727222

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.57	D
BayesDel_noAF	Pathogenic	0.31
CADD	Benign	21
DANN	Uncertain	0.98
DEOGEN2	Benign	0.031	.;T;.;.;.;.
Eigen	Uncertain	0.35
Eigen_PC	Uncertain	0.30
FATHMM_MKL	Uncertain	0.86	D
LIST_S2	Uncertain	0.90	D;D;D;D;D;D
M_CAP	Pathogenic	0.74	D
MetaRNN	Pathogenic	0.99	D;D;D;D;D;D
MetaSVM	Benign	-0.35	T
MutationTaster	Benign	0.99	N;N
PROVEAN	Benign	-0.80	N;N;.;.;.;N
REVEL	Uncertain	0.52
Sift	Pathogenic	0.0	D;D;.;.;.;D
Sift4G	Uncertain	0.0020	D;D;.;D;D;D
Polyphen		0.93	.;P;.;.;.;.
Vest4		0.96, 0.90, 0.95, 0.92, 0.95
MutPred		0.99		Loss of stability (P = 0.0132);Loss of stability (P = 0.0132);Loss of stability (P = 0.0132);Loss of stability (P = 0.0132);Loss of stability (P = 0.0132);Loss of stability (P = 0.0132);
MVP		0.48
ClinPred		1.0	D
GERP RS		4.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.97
gMVP		0.63

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

LitVar

Other links and lift over

dbSNP: rs1060503392; hg19: chr11-61197620;