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Variant: NM_000261.2(MYOC):c.992C>T (p.Ser331Leu)

CA1244102

293710 (ClinVar)

Gene: MYOC
Condition: primary open angle glaucoma
Inheritance Mode: Autosomal dominant inheritance
UUID: c0aab549-271f-4775-b24b-ad8f2ba952dc

HGVS expressions

NM_000261.2:c.992C>T
NM_000261.2(MYOC):c.992C>T (p.Ser331Leu)
NC_000001.11:g.171636448G>A
CM000663.2:g.171636448G>A
NC_000001.10:g.171605588G>A
CM000663.1:g.171605588G>A
NC_000001.9:g.169872211G>A
NG_008859.1:g.21186C>T
ENST00000037502.11:c.992C>T
ENST00000637303.1:c.235-2182G>A
ENST00000638471.1:c.*330C>T
ENST00000037502.10:c.992C>T
ENST00000614688.1:c.992C>T
NM_000261.1:c.992C>T

Uncertain Significance

Not Met criteria codes 15
PS2 PS1 PS3 PS4 PP1 PP3 PM5 PM4 BA1 PM6 PM2 BS3 BS1 BP4 BP7

Evidence Links 0

Expert Panel

Criteria Specification Information

Criteria Specifications for this VCEP
Evidence submitted by expert panel
Glaucoma VCEP
The c.992C>T variant in MYOC is a missense variant predicted to cause substitution of Serine by Leucine at amino acid 331 (p.Ser331Leu). The highest minor allele frequency of this variant was in the South Asian population of gnomAD (v2.1.1) = 0.0002940 (9 alleles out of 30,610), which did not meet the PM2_Supporting allele frequency threshold (≤ 0.0001) or the BS1 allele frequency threshold (≥ 0.001). The REVEL score = 0.543, which was neither above nor below the thresholds for PP3 (≥ 0.7) or BP4 (≤ 0.15), predicting a damaging or benign impact on MYOC function. There was no functional evidence predicting a damaging or benign impact of this variant on MYOC function. Although a proband with primary open angle glaucoma had been reported carrying this variant, PM2_Supporting was not met, therefore PS4 did not apply. In summary, this variant did not meet any criteria, receiving a score of 0 and a classification 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): none
Not Met criteria codes
PS2
This variant has not been identified de novo.
PS1
An established pathogenic variant causing this same amino acid change has not been identified.
PS3
No functional evidence has been found for this variant.
PS4
Although a proband with POAG had been reported carrying this variant, PM2_Supporting was not met, therefore PS4 did not apply.
PP1
No segregations have been reported for this variant.
PP3
The REVEL score = 0.543, which did not meet the ≥ 0.7 threshold for PP3.
PM5
PM5_Supporting could not be applied to this variant as the other missense variant at the same amino acid residue (c.991T>A, p.Ser331Thr, PMID: 17417611) was not classified as likely pathogenic or pathogenic.
PM4
This variant does not cause a protein length change.
BA1
This variant did not meet the ≥ 0.01 minor allele frequency threshold in gnomAD (v2.1.1).
PM6
This variant has not been identified de novo.
PM2
The highest minor allele frequency of this variant was in the South Asian population of gnomAD (v2.1.1) = 0.0002940 (9 alleles out of 30,610), which did not meet the ≤ 0.0001 threshold set for PM2_Supporting.
BS3
No functional evidence has been found for this variant.
BS1
The highest minor allele frequency of this variant was in the South Asian population of gnomAD (v2.1.1) = 0.0002940 (9 alleles out of 30,610), which did not meet the ≥ 0.001 threshold set for BS1.
BP4
The REVEL score = 0.543, which did not meet the ≤ 0.15 threshold required for BP4.
BP7
This is not a synonymous or non-coding variant.
Approved on: 2023-06-01
Published on: 2023-06-01
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