Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM1PP2PP3_ModeratePP5

The ENST00000378043.9(BEST1):c.355G>C(p.Glu119Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00002 in 1,550,448 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E119K) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000019 ( 0 hom. )

Consequence

BEST1
ENST00000378043.9 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:2U:3O:1

Conservation

PhyloP100: 9.79

Publications

10 publications found

Variant links:

Genes affected

BEST1 (HGNC:12703): (bestrophin 1) This gene encodes a member of the bestrophin gene family. This small gene family is characterized by proteins with a highly conserved N-terminus with four to six transmembrane domains. Bestrophins may form chloride ion channels or may regulate voltage-gated L-type calcium-ion channels. Bestrophins are generally believed to form calcium-activated chloride-ion channels in epithelial cells but they have also been shown to be highly permeable to bicarbonate ion transport in retinal tissue. Mutations in this gene are responsible for juvenile-onset vitelliform macular dystrophy (VMD2), also known as Best macular dystrophy, in addition to adult-onset vitelliform macular dystrophy (AVMD) and other retinopathies. Alternative splicing results in multiple variants encoding distinct isoforms.[provided by RefSeq, Nov 2008]

BEST1 Gene-Disease associations (from GenCC):

autosomal dominant vitreoretinochoroidopathy
Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae), PanelApp Australia, G2P
inherited retinal dystrophy
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
retinitis pigmentosa
Inheritance: AD, AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, G2P
vitelliform macular dystrophy 2
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet
autosomal recessive bestrophinopathy
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
retinitis pigmentosa 50
Inheritance: AD Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
adult-onset foveomacular vitelliform dystrophy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
MRCS syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
nanophthalmia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

BEST1 links:

LOC107984334 (HGNC:):

LOC107984334 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM1

In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 6 uncertain in ENST00000378043.9

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 209 curated pathogenic missense variants (we use a threshold of 10). The gene has 23 curated benign missense variants. Gene score misZ: 0.61695 (below the threshold of 3.09). Trascript score misZ: 0.88358 (below the threshold of 3.09). GenCC associations: The gene is linked to vitelliform macular dystrophy 2, MRCS syndrome, autosomal recessive bestrophinopathy, autosomal dominant vitreoretinochoroidopathy, retinitis pigmentosa, retinitis pigmentosa 50, inherited retinal dystrophy, adult-onset foveomacular vitelliform dystrophy, nanophthalmia.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.925

PP5

Variant 11-61955825-G-C is Pathogenic according to our data. Variant chr11-61955825-G-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 2735.

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000378043.9. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
BEST1	NM_004183.4	MANE Select	c.355G>C	p.Glu119Gln	missense	Exon 4 of 11	NP_004174.1
BEST1	NM_001440571.1		c.355G>C	p.Glu119Gln	missense	Exon 4 of 10	NP_001427500.1
BEST1	NM_001440572.1		c.355G>C	p.Glu119Gln	missense	Exon 4 of 9	NP_001427501.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
BEST1	ENST00000378043.9	TSL:1 MANE Select	c.355G>C	p.Glu119Gln	missense	Exon 4 of 11	ENSP00000367282.4
BEST1	ENST00000449131.6	TSL:1	c.175G>C	p.Glu59Gln	missense	Exon 3 of 9	ENSP00000399709.2
BEST1	ENST00000526988.1	TSL:2	c.37G>C	p.Glu13Gln	missense	Exon 3 of 9	ENSP00000433195.1

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152252

Hom.:

Cov.:

show subpopulations

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:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000267

AC:

AN:

149758

AF XY:

0.0000126

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000728

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000186

AC:

AN:

1398196

Hom.:

Cov.:

AF XY:

0.0000131

AC XY:

AN XY:

689644

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31592

American (AMR)

AF:

0.00

AC:

AN:

35730

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25172

East Asian (EAS)

AF:

0.00

AC:

AN:

35824

South Asian (SAS)

AF:

0.00

AC:

AN:

79234

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48116

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5664

European-Non Finnish (NFE)

AF:

0.0000222

AC:

AN:

1078882

Other (OTH)

AF:

0.0000345

AC:

AN:

57982

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152252

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74378

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41474

American (AMR)

AF:

0.00

AC:

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5202

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68042

Other (OTH)

AF:

0.00

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000194

Hom.:

Bravo

AF:

0.0000151

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000123

AC:

ExAC

AF:

0.0000235

AC:

ClinVar

ClinVar submissions as Germline

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (4)

Retinal dystrophy (1)

Vitelliform macular dystrophy 2 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Pathogenic

0.41

BayesDel_noAF

Pathogenic

0.54

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.94

Eigen

Pathogenic

0.83

Eigen_PC

Pathogenic

0.79

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.87

M_CAP

Pathogenic

0.74

MetaRNN

Pathogenic

0.93

MetaSVM

Pathogenic

1.1

MutationAssessor

Pathogenic

3.2

PhyloP100

9.8

PrimateAI

Uncertain

0.53

PROVEAN

Uncertain

-2.8

REVEL

Pathogenic

0.94

Sift

Benign

0.074

Sift4G

Benign

0.10

Polyphen

1.0

Vest4

0.82

MVP

0.99

MPC

0.97

ClinPred

0.94

GERP RS

5.0

Varity_R

0.73

gMVP

0.74

Mutation Taster

=164/136

polymorphism

(source)

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

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

ClinVar submissions as Germline

Computational scores

Splicing

Publications

Other links and lift over