NM_000261.2:c.39T>G

Variant names:

• chr1-171652573-A-C
• rs12082573
• NM_000261.2:c.39T>G

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP4 BA1 BP7

This summary comes from the ClinGen Evidence Repository: The c.39T>G variant in MYOC is a synonymous variant (p.Pro13=). The highest minor allele frequency of this variant was in the African/African-American population of gnomAD (v2.1.1) = 0.07477, which met the ≥ 0.01 threshold set for BA1 (1,865 alleles out of 24,942, meeting the threshold of ≥ 5 of at least 2,000 observed alleles). This variant was not predicted to affect splicing, as assessed with SpliceAI (≤ 0.2), with a CADD score (v1.6) = 0.647 which met the ≤ 10 threshold for BP4, and the GERP score = -1.38 (threshold < 0), indicating a lack of conservation at this site (BP7). This evidence suggests that the variant did not impact MYOC function. As BA1 was met, PP1 did not apply and segregations were not counted. Although probands with juvenile or primary open angle glaucoma have been reported carrying this variant, PM2_Supporting was not met, therefore PS4 did not apply. In summary, this variant was classified as benign (BA1 is a stand-alone criterion for a benign level of pathogenicity) for juvenile open angle glaucoma based on the ACMG/AMP criteria met, as specified by the ClinGen Glaucoma VCEP (v1, 12 Oct 2021): BA1, BP4, BP7. LINK:https://erepo.genome.network/evrepo/ui/classification/CA1244342/MONDO:0020367/019

• Frequency:
  • Genomes: 𝑓 0.021 (119 hom., cov: 32)
  • Exomes 𝑓: 0.0023 (112 hom.)
• Consequence: MYOC NM_000261.2 synonymous
• Clinical Significance: Benign reviewed by expert panel B:6
• Conservation: PhyloP100: -0.0670
• Publications: 7 publications found

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]

MYOC Gene-Disease associations (from GenCC):

• glaucoma 1, open angle, A

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
• juvenile open angle glaucoma

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, G2P
• open-angle glaucoma

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• congenital glaucoma

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Specifications for MYOC are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Our verdict: Benign. The variant received -10 ACMG points.

• BP4: For more information check the summary or visit ClinGen Evidence Repository.
• BP7: For more information check the summary or visit ClinGen Evidence Repository.
• BA1: For more information check the summary or visit ClinGen Evidence Repository.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000261.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYOC	NM_000261.2	MANE Select	c.39T>G	p.Pro13Pro	synonymous	Exon 1 of 3	NP_000252.1	Q99972

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYOC	ENST00000037502.11	TSL:1 MANE Select	c.39T>G	p.Pro13Pro	synonymous	Exon 1 of 3	ENSP00000037502.5	Q99972
	MYOC	ENST00000971579.1		c.39T>G	p.Pro13Pro	synonymous	Exon 1 of 3	ENSP00000641638.1
	MYOC	ENST00000877923.1		c.39T>G	p.Pro13Pro	synonymous	Exon 1 of 4	ENSP00000547982.1

Frequencies

GnomAD3 genomes AF: 0.0211 AC: 3208 AN: 152190 Hom.: 119 Cov.: 32

Gnomad AFR AF: 0.0725

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00922

Gnomad ASJ AF: 0.00144

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00949

Gnomad NFE AF: 0.000353

Gnomad OTH AF: 0.0144

GnomAD2 exomes AF: 0.00575 AC: 1431 AN: 249014 AF XY: 0.00423

Gnomad AFR exome AF: 0.0725

Gnomad AMR exome AF: 0.00416

Gnomad ASJ exome AF: 0.00129

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000539

Gnomad OTH exome AF: 0.00556

GnomAD4 exome AF: 0.00227 AC: 3315 AN: 1461876 Hom.: 112 Cov.: 33 AF XY: 0.00194 AC XY: 1408 AN XY: 727238

African (AFR) AF: 0.0741 AC: 2482 AN: 33476

American (AMR) AF: 0.00443 AC: 198 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.000918 AC: 24 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.000104 AC: 9 AN: 86256

European-Finnish (FIN) AF: 0.0000187 AC: 1 AN: 53416

Middle Eastern (MID) AF: 0.00624 AC: 36 AN: 5768

European-Non Finnish (NFE) AF: 0.000230 AC: 256 AN: 1112006

Other (OTH) AF: 0.00512 AC: 309 AN: 60394

GnomAD4 genome AF: 0.0211 AC: 3219 AN: 152308 Hom.: 119 Cov.: 32 AF XY: 0.0203 AC XY: 1510 AN XY: 74480

African (AFR) AF: 0.0726 AC: 3015 AN: 41556

American (AMR) AF: 0.00921 AC: 141 AN: 15306

Ashkenazi Jewish (ASJ) AF: 0.00144 AC: 5 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5180

South Asian (SAS) AF: 0.000207 AC: 1 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10626

Middle Eastern (MID) AF: 0.0102 AC: 3 AN: 294

European-Non Finnish (NFE) AF: 0.000353 AC: 24 AN: 68026

Other (OTH) AF: 0.0142 AC: 30 AN: 2112

Alfa AF: 0.0106 Hom.: 48

Bravo AF: 0.0241

Asia WGS AF: 0.00491 AC: 17 AN: 3478

EpiCase AF: 0.000382

EpiControl AF: 0.000711

ClinVar

ClinVar submissions

Significance: Benign

Revision: reviewed by expert panel

Pathogenic	VUS	Benign	Condition
-	-	3	not provided (3)
-	-	1	Glaucoma (1)
-	-	1	Glaucoma 1, open angle, A (1)
-	-	1	Open-angle glaucoma (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	3.3
DANN	Benign	0.47
PhyloP100		-0.067
PromoterAI		-0.0046	Neutral
Mutation Taster		=100/0	polymorphism (auto)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs12082573; hg19: chr1-171621713;