ClinVar Miner

Submissions for variant NM_000261.2(MYOC):c.1442C>T (p.Pro481Leu)

dbSNP: rs2102944466
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
ClinGen Glaucoma Variant Curation Expert Panel RCV002248294 SCV002520346 likely pathogenic Glaucoma of childhood 2022-05-09 reviewed by expert panel curation The c.1442C>T variant in MYOC is a missense variant predicted to cause substitution of Proline by Leucine at amino acid 481 (p.Pro481Leu). 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 = 0.72, which met the >= 0.7 threshold for PP3, predicting a damaging effect on MYOC function. A previous study (PMID: 16466712) demonstrated that the Pro481Leu 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. 3 segregations in 1 family, with juvenile or primary open angle glaucoma (JOAG or POAG), have been reported (PMID: 12189160), which fulfilled PP1 (3-4 meioses). 2 probands with JOAG or POAG have been reported carrying this variant (PMIDs: 10196380, 12189160), which met PS4_Supporting (>= 2 probands). In summary, this variant met the criteria to receive a score of 6 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): PS3_Moderate, PP1, PP3, PS4_Supporting, PM2_Supporting

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