rs762680550

chr7-141601240-C-Gchr7-141601240-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_018238.4(AGK):c.257C>G(p.Pro86Arg) variant causes a missense change. The variant allele was found at a frequency of 0.00000806 in 1,612,610 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. P86L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000075 (0 hom.)
• Consequence: AGK NM_018238.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.36

Genes affected

AGK (HGNC:21869): (acylglycerol kinase) The protein encoded by this gene is a mitochondrial membrane protein involved in lipid and glycerolipid metabolism. The encoded protein is a lipid kinase that catalyzes the formation of phosphatidic and lysophosphatidic acids. Defects in this gene have been associated with mitochondrial DNA depletion syndrome 10. [provided by RefSeq, Feb 2012]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.85

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
AGK	NM_018238.4	c.257C>G	p.Pro86Arg	missense_variant	5/16	ENST00000649286.2
AGK	NM_001364948.3	c.257C>G	p.Pro86Arg	missense_variant	5/15
AGK	XM_011516397.4	c.257C>G	p.Pro86Arg	missense_variant	5/16
AGK	XM_024446835.2	c.257C>G	p.Pro86Arg	missense_variant	5/16

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
AGK	ENST00000649286.2	c.257C>G	p.Pro86Arg	missense_variant	5/16		NM_018238.4	P1

Frequencies

GnomAD3 genomes AF: 0.0000132 AC: 2 AN: 152052 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000242

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.00000399 AC: 1 AN: 250418 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135384

Gnomad AFR exome AF: 0.0000617

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: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000753 AC: 11 AN: 1460558 Hom.: 0 Cov.: 29 AF XY: 0.00000826 AC XY: 6 AN XY: 726588

Gnomad4 AFR exome AF: 0.0000599

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000720

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.0000132 AC: 2 AN: 152052 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74274

Gnomad4 AFR AF: 0.0000242

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000147

Gnomad4 OTH AF: 0.00

Bravo AF: 0.0000151

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Sengers syndrome;C3553494:Cataract 38 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Oct 06, 2017

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. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with AGK-related disease. This variant is present in population databases (rs762680550, ExAC 0.01%). This sequence change replaces proline with arginine at codon 86 of the AGK protein (p.Pro86Arg). The proline residue is highly conserved and there is a moderate physicochemical difference between proline and arginine. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.96
BayesDel_addAF	Uncertain	0.12	D
BayesDel_noAF	Uncertain	0.12
Cadd	Pathogenic	28
Dann	Uncertain	1.0
DEOGEN2	Benign	0.23	T;T;T;T;.;T;T;.
Eigen	Pathogenic	0.91
Eigen_PC	Pathogenic	0.86
FATHMM_MKL	Pathogenic	0.99	D
M_CAP	Benign	0.059	D
MetaRNN	Pathogenic	0.85	D;D;D;D;D;D;D;D
MetaSVM	Benign	-0.58	T
MutationAssessor	Pathogenic	2.9	M;.;.;M;.;M;M;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Uncertain	0.71	T
PROVEAN	Pathogenic	-9.0	D;.;D;.;.;.;.;.
REVEL	Uncertain	0.52
Sift	Pathogenic	0.0	D;.;D;.;.;.;.;.
Sift4G	Uncertain	0.0050	D;D;D;.;.;.;.;.
Polyphen		1.0	D;.;.;D;.;D;D;.
Vest4		0.90
MutPred		0.66		Gain of MoRF binding (P = 0.005);.;.;Gain of MoRF binding (P = 0.005);.;Gain of MoRF binding (P = 0.005);Gain of MoRF binding (P = 0.005);Gain of MoRF binding (P = 0.005);
MVP		0.69
MPC		0.81
ClinPred		1.0	D
GERP RS		5.7
Varity_R		0.96
gMVP		0.92

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: rs762680550; hg19: chr7-141301040;