15-63327500-GTTTTTT-GTTT

Variant names:

• chr15-63327500-GTTT-G
• rs74794784
• NM_001218.5:c.908-270_908-268delAAA

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_001218.5(CA12):​c.908-270_908-268delAAA variant causes a intron change involving the alteration of a non-conserved nucleotide. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.0000071 (0 hom., cov: 0)
• Consequence: CA12 NM_001218.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.887
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• isolated hyperchlorhidrosis

  Inheritance: AR Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics

LOC124903506 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001218.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CA12	NM_001218.5	MANE Select	c.908-270_908-268delAAA		intron	N/A	NP_001209.1	O43570-1
	CA12	NM_206925.3		c.875-270_875-268delAAA		intron	N/A	NP_996808.1	O43570-2
	CA12	NM_001293642.2		c.695-270_695-268delAAA		intron	N/A	NP_001280571.1	B3KUB4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CA12	ENST00000178638.8	TSL:1 MANE Select	c.908-270_908-268delAAA		intron	N/A	ENSP00000178638.3	O43570-1
	CA12	ENST00000344366.7	TSL:1	c.875-270_875-268delAAA		intron	N/A	ENSP00000343088.3	O43570-2
	CA12	ENST00000907869.1		c.902-270_902-268delAAA		intron	N/A	ENSP00000577928.1

Frequencies

GnomAD3 genomes AF: 0.00000713 AC: 1 AN: 140310 Hom.: 0 Cov.: 0

Gnomad AFR AF: 0.00

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: 0.0000155

Gnomad OTH AF: 0.00

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.00000713 AC: 1 AN: 140310 Hom.: 0 Cov.: 0 AF XY: 0.0000147 AC XY: 1 AN XY: 67808

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 37844

American (AMR) AF: 0.00 AC: 0 AN: 14130

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3340

East Asian (EAS) AF: 0.00 AC: 0 AN: 4810

South Asian (SAS) AF: 0.00 AC: 0 AN: 4272

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 8528

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 300

European-Non Finnish (NFE) AF: 0.0000155 AC: 1 AN: 64346

Other (OTH) AF: 0.00 AC: 0 AN: 1874

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.89

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

Other links and lift over

dbSNP: rs74794784; hg19: chr15-63619699;