rs74315341
Variant summary
Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PM1PM2PP3_StrongPP5_Very_Strong
The NM_000261.2(MYOC):c.754G>A(p.Gly252Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000138 in 1,450,530 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★★).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000014 ( 0 hom. )
Consequence
MYOC
NM_000261.2 missense
NM_000261.2 missense
Scores
7
9
3
Clinical Significance
Conservation
PhyloP100: 3.19
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]
Genome browser will be placed here
ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 16 ACMG points.
PM1
?
In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 7 uncertain in NM_000261.2
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.973
PP5
?
Variant 1-171636686-C-T is Pathogenic according to our data. Variant chr1-171636686-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 7960.Status of the report is reviewed_by_expert_panel, 3 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
MYOC | NM_000261.2 | c.754G>A | p.Gly252Arg | missense_variant | 3/3 | ENST00000037502.11 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MYOC | ENST00000037502.11 | c.754G>A | p.Gly252Arg | missense_variant | 3/3 | 1 | NM_000261.2 | P1 | |
MYOCOS | ENST00000637303.1 | c.235-1944C>T | intron_variant | 5 | A2 | ||||
MYOC | ENST00000638471.1 | c.*92G>A | 3_prime_UTR_variant, NMD_transcript_variant | 4/4 | 5 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome AF: 0.00000138 AC: 2AN: 1450530Hom.: 0 Cov.: 31 AF XY: 0.00000277 AC XY: 2AN XY: 722028
GnomAD4 exome
AF:
AC:
2
AN:
1450530
Hom.:
Cov.:
31
AF XY:
AC XY:
2
AN XY:
722028
Gnomad4 AFR exome
AF:
Gnomad4 AMR exome
AF:
Gnomad4 ASJ exome
AF:
Gnomad4 EAS exome
AF:
Gnomad4 SAS exome
AF:
Gnomad4 FIN exome
AF:
Gnomad4 NFE exome
AF:
Gnomad4 OTH exome
AF:
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Likely pathogenic
Submissions summary: Pathogenic:2
Revision: reviewed by expert panel
LINK: link
Submissions by phenotype
Glaucoma 1, open angle, A Pathogenic:1
Pathogenic, no assertion criteria provided | literature only | OMIM | Jan 01, 2007 | - - |
Glaucoma of childhood Pathogenic:1
Likely pathogenic, reviewed by expert panel | curation | ClinGen Glaucoma Variant Curation Expert Panel | Feb 20, 2022 | The c.754G>A variant in MYOC is a missense variant predicted to cause substitution of Glycine by Arginine at amino acid 252 (p.Gly252Arg). This variant was not found in any population of gnomAD (v2.1.1), meeting the <= 0.0001 threshold set for PM2_Supporting in a population of at least 10,000 alleles. The REVEL score = 0.798, which met the >= 0.7 threshold for PP3, predicting a damaging effect on MYOC function. A previous study (PMID: 16466712) demonstrated that the Gly252Arg protein had reduced secretion levels compared to wild type myocilin protein and met the OddsPath threshold for PS3_Moderate (> 4.3), indicating that this variant did impact protein function. 17 segregations in 3 families, with juvenile or primary open angle glaucoma (JOAG or POAG), have been reported (PMIDs: 17210859, 10873982, 15326130), which fulfilled PP1_Strong (>= 7 meioses in > 1 family). 4 probands with JOAG or POAG have been reported carrying this variant (PMIDs: 17210859, 10873982, 9772276, 15326130), which met PS4_Supporting (>= 2 probands). In summary, this variant met the criteria to receive a score of 9 and to be classified as likely pathogenic (likely pathogenic classification range 6 to 9) for juvenile open angle glaucoma based on the ACMG/AMP criteria met, as specified by the ClinGen Glaucoma VCEP (v1, 12 Oct 2021): PP1_Strong, PS3_Moderate, PP3, PM2_Supporting, PS4_Supporting. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Pathogenic
DEOGEN2
Pathogenic
D
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Benign
D
LIST_S2
Uncertain
D
M_CAP
Benign
D
MetaRNN
Pathogenic
D
MetaSVM
Uncertain
D
MutationAssessor
Pathogenic
M
MutationTaster
Benign
A
PrimateAI
Uncertain
T
PROVEAN
Uncertain
D
REVEL
Pathogenic
Sift
Uncertain
D
Sift4G
Uncertain
D
Polyphen
D
Vest4
MutPred
Gain of solvent accessibility (P = 0.0306);
MVP
MPC
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at