1-171635954-T-G
Variant summary
Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1PM2
The NM_000261.2(MYOC):c.1486A>C(p.Thr496Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★★★).
Frequency
Genomes: not found (cov: 32)
Consequence
MYOC
NM_000261.2 missense
NM_000261.2 missense
Scores
5
5
9
Clinical Significance
Conservation
PhyloP100: 0.711
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 Uncertain_significance. Variant got 4 ACMG points.
PM1
?
In a domain Olfactomedin-like (size 259) in uniprot entity MYOC_HUMAN there are 80 pathogenic changes around while only 16 benign (83%) in NM_000261.2
PM2
?
Very rare variant in population databases, with high coverage;
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
MYOC | NM_000261.2 | c.1486A>C | p.Thr496Pro | missense_variant | 3/3 | ENST00000037502.11 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MYOC | ENST00000037502.11 | c.1486A>C | p.Thr496Pro | missense_variant | 3/3 | 1 | NM_000261.2 | P1 | |
MYOCOS | ENST00000637303.1 | c.235-2676T>G | intron_variant | 5 | A2 | ||||
MYOC | ENST00000638471.1 | c.*824A>C | 3_prime_UTR_variant, NMD_transcript_variant | 4/4 | 5 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Cov.: 31
GnomAD4 exome
Cov.:
31
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: reviewed by expert panel
LINK: link
Submissions by phenotype
Open-angle glaucoma Uncertain:1
Uncertain significance, reviewed by expert panel | curation | ClinGen Glaucoma Variant Curation Expert Panel | Feb 15, 2023 | The c.1486A>C variant in MYOC is a missense variant predicted to cause substitution of Threonine by Proline at amino acid 496 (p.Thr496Pro). 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 = 0.704, which met the >=0.7 threshold for PP3, predicting a damaging effect on MYOC function. There was no functional evidence predicting a damaging or benign impact of this variant on MYOC function. Only 1 proband with primary open angle glaucoma had been reported (PMID: 33793440), not meeting the >=2 probands threshold required to meet PS4_Supporting. In summary, this variant met the criteria to receive a score of 2 and to be classified as a variant of uncertain significance (uncertain significance classification range -1 to 5) for primary open angle glaucoma based on the ACMG/AMP criteria met, as specified by the ClinGen Glaucoma VCEP (v1, 12 Oct 2021): PP3, PM2_Supporting - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Uncertain
Cadd
Benign
Dann
Uncertain
DEOGEN2
Pathogenic
D
Eigen
Uncertain
Eigen_PC
Benign
FATHMM_MKL
Benign
N
LIST_S2
Benign
T
M_CAP
Benign
D
MetaRNN
Uncertain
D
MetaSVM
Uncertain
T
MutationAssessor
Pathogenic
M
MutationTaster
Benign
D
PrimateAI
Benign
T
PROVEAN
Benign
N
REVEL
Pathogenic
Sift
Benign
T
Sift4G
Benign
T
Polyphen
D
Vest4
MutPred
Loss of stability (P = 0.136);
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
Publications
No publications associated with this variant yet.