16-75479743-G-A

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 3P and 2B. PM2PP2BP4_Moderate

The NM_021615.5(CHST6):c.86C>T(p.Pro29Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000207 in 1,452,156 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 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

CHST6
NM_021615.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.58

Publications

0 publications found

Variant links:

Genes affected

CHST6 (HGNC:6938): (carbohydrate sulfotransferase 6) The protein encoded by this gene is an enzyme that catalyzes the transfer of a sulfate group to the GlcNAc residues of keratan. Keratan sulfate helps maintain corneal transparency. Defects in this gene are a cause of macular corneal dystrophy (MCD). [provided by RefSeq, Jan 2010]

CHST6 Gene-Disease associations (from GenCC):

macular corneal dystrophy
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae)

CHST6 links:

ENSG00000203472 (HGNC:):

ENSG00000203472 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 12 curated pathogenic missense variants (we use a threshold of 10). The gene has 2 curated benign missense variants. Gene score misZ: -0.89985 (below the threshold of 3.09). Trascript score misZ: -1.6448 (below the threshold of 3.09). GenCC associations: The gene is linked to macular corneal dystrophy.

BP4

Computational evidence support a benign effect (MetaRNN=0.21940133).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_021615.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CHST6	NM_021615.5	MANE Select	c.86C>T	p.Pro29Leu	missense	Exon 3 of 3	NP_067628.1
CHST6	NR_163480.1		n.733+2074C>T		intron	N/A
CHST6	NR_163481.1		n.577+2074C>T		intron	N/A

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CHST6	ENST00000332272.9	TSL:3 MANE Select	c.86C>T	p.Pro29Leu	missense	Exon 3 of 3	ENSP00000328983.4
CHST6	ENST00000390664.3	TSL:1	c.86C>T	p.Pro29Leu	missense	Exon 4 of 4	ENSP00000375079.2
CHST6	ENST00000649341.1		n.86C>T		non_coding_transcript_exon	Exon 3 of 4	ENSP00000497635.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000207

AC:

AN:

1452156

Hom.:

Cov.:

AF XY:

0.00000416

AC XY:

AN XY:

721612

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33370

American (AMR)

AF:

0.00

AC:

AN:

43102

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25852

East Asian (EAS)

AF:

0.00

AC:

AN:

39368

South Asian (SAS)

AF:

0.00

AC:

AN:

85356

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5754

European-Non Finnish (NFE)

AF:

0.00000271

AC:

AN:

1107716

Other (OTH)

AF:

0.00

AC:

AN:

60026

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.508

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Macular corneal dystrophy

Uncertain:1

Apr 12, 2017

Mayo Clinic Laboratories, Mayo Clinic

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.095

BayesDel_addAF

Benign

-0.020

BayesDel_noAF

Benign

-0.27

CADD

Benign

(source)

DANN

Benign

0.90

DEOGEN2

Benign

0.31

Eigen

Benign

-0.33

Eigen_PC

Benign

-0.36

FATHMM_MKL

Benign

0.61

LIST_S2

Benign

0.78

M_CAP

Uncertain

0.16

MetaRNN

Benign

0.22

MetaSVM

Uncertain

-0.067

MutationAssessor

Benign

1.9

PhyloP100

1.6

PrimateAI

Benign

0.37

PROVEAN

Benign

-1.4

REVEL

Benign

0.27

Sift

Benign

0.65

Sift4G

Benign

0.70

Polyphen

0.88

Vest4

0.052

MutPred

0.40

Loss of glycosylation at P29 (P = 0.0205)

MVP

0.90

MPC

0.44

ClinPred

0.15

GERP RS

1.5

Varity_R

0.020

gMVP

0.85

Mutation Taster

=72/28

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

Details are displayed if max score is > 0.2

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

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over