16-75479743-G-C

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>G(p.Pro29Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,238 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P29L) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Consequence

CHST6
NM_021615.5 missense

Scores

Clinical Significance

Not reported in ClinVar

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:

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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=0.14628166).

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>G	p.Pro29Arg	missense	Exon 3 of 3	NP_067628.1
CHST6	NR_163480.1		n.733+2074C>G		intron	N/A
CHST6	NR_163481.1		n.577+2074C>G		intron	N/A

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CHST6	ENST00000332272.9	TSL:3 MANE Select	c.86C>G	p.Pro29Arg	missense	Exon 3 of 3	ENSP00000328983.4
CHST6	ENST00000390664.3	TSL:1	c.86C>G	p.Pro29Arg	missense	Exon 4 of 4	ENSP00000375079.2
CHST6	ENST00000649341.1		n.86C>G		non_coding_transcript_exon	Exon 3 of 4	ENSP00000497635.1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152238

Hom.:

Cov.:

show subpopulations

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152238

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74364

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41466

American (AMR)

AF:

0.00

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68050

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.066

BayesDel_addAF

Uncertain

0.050

BayesDel_noAF

Benign

-0.17

CADD

Benign

(source)

DANN

Benign

0.72

DEOGEN2

Benign

0.23

Eigen

Benign

-0.68

Eigen_PC

Benign

-0.60

FATHMM_MKL

Benign

0.68

LIST_S2

Benign

0.59

M_CAP

Uncertain

0.18

MetaRNN

Benign

0.15

MetaSVM

Uncertain

-0.20

MutationAssessor

Benign

1.9

PhyloP100

1.6

PrimateAI

Benign

0.37

PROVEAN

Benign

-0.76

REVEL

Benign

0.23

Sift

Benign

0.34

Sift4G

Benign

0.73

Polyphen

0.034

Vest4

0.12

MutPred

0.37

Loss of glycosylation at P29 (P = 0.0205)

MVP

0.85

MPC

0.51

ClinPred

0.066

GERP RS

1.5

Varity_R

0.038

gMVP

0.88

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

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over