ClinVar

Description

The c.1345G>A variant in MYOC is a missense variant predicted to cause substitution of Valine by Isoleucine at amino acid 449 (p.Val449Ile). 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 30,616), which did not meet the PM2_Supporting allele frequency threshold (<= 0.0001) or the BS1 allele frequency threshold (>= 0.001). The REVEL score = 0.181, 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. This variant has not yet been identified in a proband with juvenile or primary open angle glaucoma, only in a participant of the control cohort. Additionally, as PM2_Supporting was not met, 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.