2-10764369-A-C

Position:

• chr2-10764369-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001039362.2(ATP6V1C2):​c.322A>C​(p.Met108Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000205 in 1,461,590 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: ATP6V1C2 NM_001039362.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.73

Genes affected

ATP6V1C2 (HGNC:18264): (ATPase H+ transporting V1 subunit C2) This gene encodes a component of vacuolar ATPase (V-ATPase), a multisubunit enzyme that mediates acidification of eukaryotic intracellular organelles. V-ATPase dependent organelle acidification is necessary for such intracellular processes as protein sorting, zymogen activation, receptor-mediated endocytosis, and synaptic vesicle proton gradient generation. V-ATPase is composed of a cytosolic V1 domain and a transmembrane V0 domain. The V1 domain consists of three A,three B, and two G subunits, as well as a C, D, E, F, and H subunit. The V1 domain contains the ATP catalytic site. This gene encodes alternate transcriptional splice variants, encoding different V1 domain C subunit isoforms. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.3235687).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ATP6V1C2	NM_001039362.2	c.322A>C	p.Met108Leu	missense_variant	5/14	ENST00000272238.9	NP_001034451.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ATP6V1C2	ENST00000272238.9	c.322A>C	p.Met108Leu	missense_variant	5/14	5	NM_001039362.2	ENSP00000272238.4
ATP6V1C2	ENST00000635370.1	c.352A>C	p.Met118Leu	missense_variant	5/14	5		ENSP00000489280.1
ATP6V1C2	ENST00000381661.3	c.322A>C	p.Met108Leu	missense_variant	5/13	2		ENSP00000371077.3
ATP6V1C2	ENST00000648362.1	c.322A>C	p.Met108Leu	missense_variant	5/12			ENSP00000497038.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461590 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727118

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 0.00000270

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 30, 2024

The c.322A>C (p.M108L) alteration is located in exon 5 (coding exon 4) of the ATP6V1C2 gene. This alteration results from a A to C substitution at nucleotide position 322, causing the methionine (M) at amino acid position 108 to be replaced by a leucine (L). 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	0.11
BayesDel_addAF	Benign	-0.090	T
BayesDel_noAF	Benign	-0.37
CADD	Benign	19
DANN	Benign	0.92
DEOGEN2	Benign	0.024	.;T;.;.
Eigen	Benign	-0.12
Eigen_PC	Benign	0.050
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.90	D;D;D;D
M_CAP	Benign	0.0075	T
MetaRNN	Benign	0.32	T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.4	.;L;L;.
PrimateAI	Uncertain	0.49	T
PROVEAN	Benign	-1.8	.;N;N;.
REVEL	Benign	0.15
Sift	Benign	0.34	.;T;T;.
Sift4G	Benign	0.36	.;T;T;T
Polyphen		0.0020	.;B;B;.
Vest4		0.70, 0.65, 0.67
MutPred		0.56		Loss of methylation at K110 (P = 0.0955);Loss of methylation at K110 (P = 0.0955);Loss of methylation at K110 (P = 0.0955);.;
MVP		0.31
MPC		0.17
ClinPred		0.75	D
GERP RS		4.6
Varity_R		0.28
gMVP		0.19

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: rs147262969; hg19: chr2-10904495;