Genetic Variant MYOC:p.Arg46Gly (chr1-171652476-G-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_000261.2(MYOC):c.136C>G(p.Arg46Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,882 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. R46Q) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

MYOC
NM_000261.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.83

Publications

46 publications found

Variant links:

Genes affected

MYOC (HGNC:7610): (myocilin) MYOC encodes the protein myocilin, which is believed to have a role in cytoskeletal function. MYOC is expressed in many occular tissues, including the trabecular meshwork, and was revealed to be the trabecular meshwork glucocorticoid-inducible response protein (TIGR). The trabecular meshwork is a specialized eye tissue essential in regulating intraocular pressure, and mutations in MYOC have been identified as the cause of hereditary juvenile-onset open-angle glaucoma. [provided by RefSeq, Jul 2008]

MYOC Gene-Disease associations (from GenCC):

glaucoma 1, open angle, A
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae)
juvenile open angle glaucoma
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: G2P, Orphanet
open-angle glaucoma
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
congenital glaucoma
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

MYOC links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYOC	NM_000261.2 link	c.136C>G	p.Arg46Gly	missense_variant	Exon 1 of 3	ENST00000037502.11	NP_000252.1	Q99972A0A0S2Z421

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYOC	ENST00000037502.11 link	c.136C>G	p.Arg46Gly	missense_variant	Exon 1 of 3	1	NM_000261.2	ENSP00000037502.5		Q99972
MYOC	ENST00000638471.1 link	n.130+6C>G		splice_region_variant, intron_variant	Intron 1 of 3	5		ENSP00000491206.1		A0A1W2PP09

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000400

AC:

AN:

250108

AF XY:

0.00

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000889

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461882

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727242

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1112006

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.00000824

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Uncertain

0.086

BayesDel_noAF

Benign

-0.11

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.53

Eigen

Benign

0.16

Eigen_PC

Benign

0.17

FATHMM_MKL

Uncertain

0.90

LIST_S2

Uncertain

0.89

M_CAP

Benign

0.027

MetaRNN

Uncertain

0.62

MetaSVM

Benign

-0.86

MutationAssessor

Uncertain

2.8

PhyloP100

1.8

PrimateAI

Benign

0.31

PROVEAN

Uncertain

-2.8

REVEL

Benign

0.15

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.031

Polyphen

0.77

Vest4

0.63

MutPred

0.38

Loss of MoRF binding (P = 0.0154);

MVP

0.84

MPC

0.42

ClinPred

0.95

GERP RS

3.7

PromoterAI

-0.038

Neutral

(source)

Varity_R

0.24

gMVP

0.74

Mutation Taster

=78/22

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over