chr1-8970867-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_001215.4(CA6):​c.730G>T​(p.Val244Phe) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000207 in 1,450,164 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 31)
Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

CA6
NM_001215.4 missense, splice_region

Scores

1
6
12
Splicing: ADA: 0.9770
2

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.364
Variant links:
Genes affected
CA6 (HGNC:1380): (carbonic anhydrase 6) The protein encoded by this gene is one of several isozymes of carbonic anhydrase. This protein is found only in salivary glands and saliva and protein may play a role in the reversible hydratation of carbon dioxide though its function in saliva is unknown. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

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, 0.88

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
CA6NM_001215.4 linkuse as main transcriptc.730G>T p.Val244Phe missense_variant, splice_region_variant 7/8 ENST00000377443.7

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
CA6ENST00000377443.7 linkuse as main transcriptc.730G>T p.Val244Phe missense_variant, splice_region_variant 7/81 NM_001215.4 P2P23280-1
ENST00000702996.1 linkuse as main transcriptn.378C>A non_coding_transcript_exon_variant 1/1

Frequencies

GnomAD3 genomes
Cov.:
31
GnomAD3 exomes
AF:
0.00000398
AC:
1
AN:
251470
Hom.:
0
AF XY:
0.00000736
AC XY:
1
AN XY:
135912
show subpopulations
Gnomad AFR exome
AF:
0.00
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:
0.00000879
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000207
AC:
3
AN:
1450164
Hom.:
0
Cov.:
28
AF XY:
0.00000277
AC XY:
2
AN XY:
722224
show subpopulations
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:
0.00000182
Gnomad4 OTH exome
AF:
0.0000167
GnomAD4 genome
Cov.:
31

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingAmbry GeneticsDec 07, 2023The c.730G>T (p.V244F) alteration is located in exon 7 (coding exon 7) of the CA6 gene. This alteration results from a G to T substitution at nucleotide position 730, causing the valine (V) at amino acid position 244 to be replaced by a phenylalanine (F). 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
Uncertain
0.56
BayesDel_addAF
Benign
-0.099
T
BayesDel_noAF
Benign
-0.38
CADD
Benign
20
DANN
Benign
0.97
DEOGEN2
Benign
0.27
T;.;.
Eigen
Benign
-0.47
Eigen_PC
Benign
-0.74
FATHMM_MKL
Benign
0.056
N
LIST_S2
Uncertain
0.93
D;D;D
M_CAP
Uncertain
0.23
D
MetaRNN
Pathogenic
0.88
D;D;D
MetaSVM
Benign
-0.32
T
MutationAssessor
Benign
1.7
L;L;.
MutationTaster
Benign
1.0
D;D;D
PrimateAI
Benign
0.35
T
PROVEAN
Uncertain
-3.0
D;D;D
REVEL
Uncertain
0.33
Sift
Benign
0.10
T;T;T
Sift4G
Uncertain
0.028
D;D;D
Polyphen
1.0
D;.;.
Vest4
0.45
MutPred
0.73
Gain of ubiquitination at K246 (P = 0.0837);Gain of ubiquitination at K246 (P = 0.0837);.;
MVP
0.77
MPC
0.72
ClinPred
0.50
D
GERP RS
-6.0
Varity_R
0.39
gMVP
0.80

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
0.98
dbscSNV1_RF
Pathogenic
0.73
SpliceAI score (max)
0.38
Details are displayed if max score is > 0.2
DS_AG_spliceai
0.38
Position offset: -39

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.

Other links and lift over

dbSNP: rs1261100664; hg19: chr1-9030926; API