The c.879G>A variant in MYOC is a synonymous variant (p.Thr293=). The highest minor allele frequency of this variant was in the African/African American population of gnomAD (v3.1.2) = 0.00009656 (4 alleles out of 41,426), which met the ≤ 0.0001 threshold set for PM2_Supporting in a population of at least 10,000 alleles. This variant was not predicted to affect splicing, as assessed with SpliceAI (≤ 0.2), with a CADD score (v1.6) = 0.036 which met the ≤ 10 threshold for BP4, and the GERP score = -11.3 (threshold < 0), indicating a lack of conservation at this site (BP7). This evidence suggests that the variant does not impact 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: 22933836), not meeting the ≥ 2 probands threshold required to meet PS4_Supporting. In summary, this variant met the criteria to receive a score of -1 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): BP4, BP7, PM2_Supporting.