rs557601555

Positions:

chr20-17499000-C-G

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBS1_Supporting

The NM_001195.5(BFSP1):c.776G>C(p.Cys259Ser) variant causes a missense change. The variant allele was found at a frequency of 0.0000694 in 1,614,188 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (no stars).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000068 ( 1 hom. )

Consequence

BFSP1
NM_001195.5 missense

Scores

Clinical Significance

Uncertain significance no assertion criteria provided U:1

Conservation

PhyloP100: 4.50

Variant links:

Genes affected

BFSP1 (HGNC:1040): (beaded filament structural protein 1) This gene encodes a lens-specific intermediate filament-like protein named filensin. The encoded protein is expressed in lens fiber cells after differentiation has begun. This protein functions as a component of the beaded filament which is a cytoskeletal structure found in lens fiber cells. Mutations in this gene are the cause of autosomal recessive cortical juvenile-onset cataract. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013]

BFSP1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.013676822).

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.0000854 (13/152300) while in subpopulation SAS AF= 0.00269 (13/4828). AF 95% confidence interval is 0.00159. There are 0 homozygotes in gnomad4. There are 11 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
BFSP1	NM_001195.5 linkuse as main transcript	c.776G>C	p.Cys259Ser	missense_variant	6/8	ENST00000377873.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
BFSP1	ENST00000377873.8 linkuse as main transcript	c.776G>C	p.Cys259Ser	missense_variant	6/8	1	NM_001195.5	P1	Q12934-1
BFSP1	ENST00000377868.6 linkuse as main transcript	c.401G>C	p.Cys134Ser	missense_variant	6/8	1			Q12934-2
BFSP1	ENST00000536626.7 linkuse as main transcript	c.359G>C	p.Cys120Ser	missense_variant	7/9	2			Q12934-3

Frequencies

GnomAD3 genomes

AF:

0.0000854

AC:

AN:

152182

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:

0.00269

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000135

AC:

AN:

251468

Hom.:

AF XY:

0.000177

AC XY:

AN XY:

135912

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00108

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000677

AC:

AN:

1461888

Hom.:

Cov.:

AF XY:

0.0000921

AC XY:

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00107

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.0000854

AC:

AN:

152300

Hom.:

Cov.:

AF XY:

0.000148

AC XY:

AN XY:

74482

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00269

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ExAC

AF:

0.000148

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

Congenital ocular coloboma

Uncertain:1

Uncertain significance, no assertion criteria provided

research

Eye Genetics Research Group, Children's Medical Research Institute

Mar 30, 2012

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Benign

-0.34

BayesDel_noAF

Benign

-0.31

CADD

Benign

DANN

Benign

0.34

DEOGEN2

Benign

0.071

T;.;.

Eigen

Benign

-0.38

Eigen_PC

Benign

-0.23

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.71

T;T;T

M_CAP

Benign

0.019

MetaRNN

Benign

0.014

T;T;T

MetaSVM

Benign

-0.59

MutationAssessor

Benign

1.3

L;.;.

MutationTaster

Benign

0.97

D;D;D;D

PrimateAI

Benign

0.43

PROVEAN

Benign

-1.5

N;D;D

REVEL

Benign

0.12

Sift

Benign

1.0

T;T;T

Sift4G

Benign

1.0

T;.;T

Polyphen

0.039

B;B;.

Vest4

0.18

MutPred

0.36

Gain of disorder (P = 0.0133);.;.;

MVP

0.79

MPC

0.47

ClinPred

0.068

GERP RS

5.1

Varity_R

0.23

gMVP

0.082

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over