chr1-216325522-G-A

Variant names:

• chr1-216325522-G-A
• rs1359713084
• NM_206933.4:c.926C>T

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM1 PP5

The NM_206933.4(USH2A):​c.926C>T​(p.Pro309Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000753 in 1,461,434 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. P309P) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.0 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000075 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: USH2A NM_206933.4 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:2 U:2
• Conservation: PhyloP100: 6.19
• Publications: 1 publications found

Genes affected

USH2A (HGNC:12601): (usherin) This gene encodes a protein that contains laminin EGF motifs, a pentaxin domain, and many fibronectin type III motifs. The protein is found in the basement membrane, and may be important in development and homeostasis of the inner ear and retina. Mutations within this gene have been associated with Usher syndrome type IIa and retinitis pigmentosa. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2008]

USH2A Gene-Disease associations (from GenCC):

• Usher syndrome type 2A

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
• Usher syndrome type 2

  Inheritance: Unknown, AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
• retinitis pigmentosa 39

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• retinitis pigmentosa

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 8 uncertain in NM_206933.4
• PP5: Variant 1-216325522-G-A is Pathogenic according to our data. Variant chr1-216325522-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 438032.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_206933.4. 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
	USH2A	NM_206933.4	MANE Select	c.926C>T	p.Pro309Leu	missense	Exon 6 of 72	NP_996816.3	O75445-1
	USH2A	NM_007123.6		c.926C>T	p.Pro309Leu	missense	Exon 6 of 21	NP_009054.6

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	USH2A	ENST00000307340.8	TSL:1 MANE Select	c.926C>T	p.Pro309Leu	missense	Exon 6 of 72	ENSP00000305941.3	O75445-1
	USH2A	ENST00000366942.3	TSL:1	c.926C>T	p.Pro309Leu	missense	Exon 6 of 21	ENSP00000355909.3	O75445-2
	USH2A	ENST00000674083.1		c.926C>T	p.Pro309Leu	missense	Exon 6 of 73	ENSP00000501296.1	O75445-3

Frequencies

GnomAD3 genomes AF: 0.00 AC: 0 AN: 152060 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000753 AC: 11 AN: 1461434 Hom.: 0 Cov.: 31 AF XY: 0.00000550 AC XY: 4 AN XY: 727012

African (AFR) AF: 0.0000299 AC: 1 AN: 33454

American (AMR) AF: 0.00 AC: 0 AN: 44656

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26128

East Asian (EAS) AF: 0.00 AC: 0 AN: 39628

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53410

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5758

European-Non Finnish (NFE) AF: 0.00000810 AC: 9 AN: 1111774

Other (OTH) AF: 0.00 AC: 0 AN: 60372

GnomAD4 genome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 152060 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74258

African (AFR) AF: 0.00 AC: 0 AN: 41410

American (AMR) AF: 0.00 AC: 0 AN: 15246

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5172

South Asian (SAS) AF: 0.00 AC: 0 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10608

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68014

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.000142 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	1	-	not provided (1)
1	-	-	Retinitis pigmentosa (1)
1	-	-	Retinitis pigmentosa 39 (1)
-	1	-	Usher syndrome type 2A (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.30
BayesDel_addAF	Uncertain	0.068	T
BayesDel_noAF	Benign	-0.14
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.49	T
Eigen	Pathogenic	0.77
Eigen_PC	Pathogenic	0.70
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.92	D
M_CAP	Uncertain	0.14	D
MetaRNN	Uncertain	0.73	D
MetaSVM	Benign	-0.75	T
MutationAssessor	Pathogenic	3.2	M
PhyloP100		6.2
PrimateAI	Uncertain	0.51	T
PROVEAN	Pathogenic	-6.5	D
REVEL	Uncertain	0.49
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.73
MutPred		0.72		Loss of disorder (P = 0.0239)
MVP		0.93
MPC		0.24
ClinPred		1.0	D
GERP RS		4.9
Varity_R		0.56
gMVP		0.93
Mutation Taster		=2/98	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs1359713084; hg19: chr1-216498864;