NM_001218.5:c.956_957delTG

Variant names:

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PVS1_StrongPM2PP5_Moderate

The NM_001218.5(CA12):c.956_957delTG(p.Val319GlyfsTer17) variant causes a frameshift change. The variant allele was found at a frequency of 0.0000545 in 1,614,116 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000056 ( 0 hom. )

Consequence

CA12
NM_001218.5 frameshift

Scores

Not classified

Clinical Significance

Likely pathogenic criteria provided, single submitter P:1

Conservation

PhyloP100: 4.44

Variant links:

Genes affected

CA12 (HGNC:1371): (carbonic anhydrase 12) Carbonic anhydrases (CAs) are a large family of zinc metalloenzymes that catalyze the reversible hydration of carbon dioxide. They participate in a variety of biological processes, including respiration, calcification, acid-base balance, bone resorption, and the formation of aqueous humor, cerebrospinal fluid, saliva, and gastric acid. This gene product is a type I membrane protein that is highly expressed in normal tissues, such as kidney, colon and pancreas, and has been found to be overexpressed in 10% of clear cell renal carcinomas. Three transcript variants encoding different isoforms have been identified for this gene. [provided by RefSeq, Jun 2014]

CA12 links:

LOC124903506 (HGNC:):

LOC124903506 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

PVS1

Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most 50 bp of the penultimate exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.102 CDS is truncated, and there are 0 pathogenic variants in the truncated region.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 15-63327183-CCA-C is Pathogenic according to our data. Variant chr15-63327183-CCA-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 561267.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CA12	NM_001218.5 link	c.956_957delTG	p.Val319GlyfsTer17	frameshift_variant	Exon 10 of 11	ENST00000178638.8	NP_001209.1	O43570-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CA12	ENST00000178638.8 link	c.956_957delTG	p.Val319GlyfsTer17	frameshift_variant	Exon 10 of 11	1	NM_001218.5	ENSP00000178638.3	O43570-1
CA12	ENST00000344366.7 link	c.923_924delTG	p.Val308GlyfsTer17	frameshift_variant	Exon 9 of 10	1		ENSP00000343088.3	O43570-2
CA12	ENST00000422263.2 link	c.743_744delTG	p.Val248GlyfsTer17	frameshift_variant	Exon 8 of 9	2		ENSP00000403028.2	B3KUB4
CA12	ENST00000560666.1 link	n.166_167delTG		non_coding_transcript_exon_variant	Exon 2 of 3	3

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152194

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000393

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000302

AC:

AN:

251404

Hom.:

AF XY:

0.000206

AC XY:

AN XY:

135878

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00217

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:

0.000163

GnomAD4 exome

AF:

0.0000561

AC:

AN:

1461804

Hom.:

AF XY:

0.0000399

AC XY:

AN XY:

727200

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00183

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

AF:

0.0000394

AC:

AN:

152312

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74476

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000392

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000126

Hom.:

Bravo

AF:

0.000106

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Isolated hyperchlorhidrosis

Pathogenic:1

Mar 10, 2018

GeneID Lab - Advanced Molecular Diagnostics

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant deletes two nucleotides resulting in an amino acid alteration, replacing a valine (V) with a glycine (G) at codon 319 creating a premature stop signal in the new reading frame noted as p.V319Gfs*17. The substitution is predicted to result in a non-functional CA12 protein, either through protein truncation or nonsense-mediated mRNA decay. This mutation is considered a non-tolerated amino acid change based on in silico prediction algorithms (disease causing), it has not been reported in the ClinVar Database (NCBI National Library of Medicine, NIH), but it has been described in 27 alleles out of 120522, in the ExAC database, all of them belonging to heterozygous carries of Latino origin. Based on these findings and the limited literature regarding this substitution we consider it as a likely pathogenic variant. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.23

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.23

Position offset: 50

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over