chr7-138798050-G-A

Position:

• chr7-138798050-G-A

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_020632.3(ATP6V0A4):​c.-137C>T variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00254 in 1,559,220 control chromosomes in the GnomAD database, including 129 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0015 (9 hom., cov: 30)
  • Exomes 𝑓: 0.0027 (120 hom.)
• Consequence: ATP6V0A4 NM_020632.3 5_prime_UTR
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.924

Genes affected

TMEM213 (HGNC:27220): (transmembrane protein 213) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

ATP6V0A4 (HGNC:866): (ATPase H+ transporting V0 subunit a4) This gene encodes a component of vacuolar ATPase (V-ATPase), a multisubunit enzyme that mediates acidification of intracellular compartments of eukaryotic cells. V-ATPase dependent 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 and three B subunits, two G subunits plus the C, D, E, F, and H subunits. The V1 domain contains the ATP catalytic site. The V0 domain consists of five different subunits: a, c, c', c'', and d. This gene is one of four genes in man and mouse that encode different isoforms of the a subunit. Alternatively spliced transcript variants encoding the same protein have been described. Mutations in this gene are associated with renal tubular acidosis associated with preserved hearing. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.81).
• BP6: Variant 7-138798050-G-A is Benign according to our data. Variant chr7-138798050-G-A is described in ClinVar as [Benign]. Clinvar id is 359036.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.00148 (225/152142) while in subpopulation SAS AF= 0.0457 (220/4818). AF 95% confidence interval is 0.0407. There are 9 homozygotes in gnomad4. There are 169 alleles in male gnomad4 subpopulation. Median coverage is 30. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 9 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TMEM213	NM_001085429.2	c.-55G>A		5_prime_UTR_variant	1/3	ENST00000442682.7
ATP6V0A4	NM_020632.3	c.-137C>T		5_prime_UTR_variant	1/22	ENST00000310018.7
ATP6V0A4	NM_130840.3	c.-34C>T		5_prime_UTR_variant	1/21

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ATP6V0A4	ENST00000310018.7	c.-137C>T		5_prime_UTR_variant	1/22	1	NM_020632.3	P1
TMEM213	ENST00000442682.7	c.-55G>A		5_prime_UTR_variant	1/3	1	NM_001085429.2	P4

Frequencies

GnomAD3 genomes AF: 0.00148 AC: 225 AN: 152024 Hom.: 9 Cov.: 30

Gnomad AFR AF: 0.0000483

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000655

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.0456

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.000956

GnomAD3 exomes AF: 0.00642 AC: 1059 AN: 165004 Hom.: 30 AF XY: 0.00878 AC XY: 772 AN XY: 87936

Gnomad AFR exome AF: 0.000351

Gnomad AMR exome AF: 0.0000395

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0451

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000149

Gnomad OTH exome AF: 0.00109

GnomAD4 exome AF: 0.00266 AC: 3739 AN: 1407078 Hom.: 120 Cov.: 31 AF XY: 0.00394 AC XY: 2738 AN XY: 694832

Gnomad4 AFR exome AF: 0.000156

Gnomad4 AMR exome AF: 0.0000276

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0446

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000111

Gnomad4 OTH exome AF: 0.00274

GnomAD4 genome AF: 0.00148 AC: 225 AN: 152142 Hom.: 9 Cov.: 30 AF XY: 0.00227 AC XY: 169 AN XY: 74372

Gnomad4 AFR AF: 0.0000482

Gnomad4 AMR AF: 0.0000654

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.0457

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.000946

Alfa AF: 0.000330 Hom.: 0

Bravo AF: 0.000238

Asia WGS AF: 0.0180 AC: 61 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Autosomal recessive distal renal tubular acidosis Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.81
CADD	Benign	1.4
DANN	Benign	0.57

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: rs368646400; hg19: chr7-138482795;