dbSNP rs763328417: BLVRB:p.Ile94Thr (chr19-40458208-A-G) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_000713.3(BLVRB):c.281T>C(p.Ile94Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000261 in 1,607,056 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 Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000028 ( 0 hom. )

Consequence

BLVRB
NM_000713.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.59

Variant links:

Genes affected

BLVRB (HGNC:1063): (biliverdin reductase B) Enables biliverdin reductase (NAD(P)+) activity and riboflavin reductase (NADPH) activity. Involved in heme catabolic process. Located in cytosol; nucleoplasm; and plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

BLVRB links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.859

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BLVRB	NM_000713.3 link	c.281T>C	p.Ile94Thr	missense_variant	Exon 3 of 5	ENST00000263368.9	NP_000704.1	P30043V9HWI1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BLVRB	ENST00000263368.9 link	c.281T>C	p.Ile94Thr	missense_variant	Exon 3 of 5	1	NM_000713.3	ENSP00000263368.3		P30043

Frequencies

GnomAD3 genomes

AF:

0.00000663

AC:

AN:

150746

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:

0.0000148

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000200

AC:

AN:

250074

Hom.:

AF XY:

0.0000296

AC XY:

AN XY:

135310

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000444

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000282

AC:

AN:

1456310

Hom.:

Cov.:

AF XY:

0.0000290

AC XY:

AN XY:

724448

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000334

Gnomad4 OTH exome

AF:

0.0000666

GnomAD4 genome

AF:

0.00000663

AC:

AN:

150746

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

73602

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:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000148

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000329

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 01, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.281T>C (p.I94T) alteration is located in exon 3 (coding exon 3) of the BLVRB gene. This alteration results from a T to C substitution at nucleotide position 281, causing the isoleucine (I) at amino acid position 94 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.84

BayesDel_addAF

Pathogenic

0.16

BayesDel_noAF

Uncertain

0.13

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.093

T;T

Eigen

Pathogenic

0.76

Eigen_PC

Pathogenic

0.71

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.91

D;D

M_CAP

Uncertain

0.091

MetaRNN

Pathogenic

0.86

D;D

MetaSVM

Benign

-0.50

MutationAssessor

Pathogenic

3.1

.;M

PrimateAI

Pathogenic

0.80

PROVEAN

Uncertain

-4.0

.;D

REVEL

Uncertain

0.63

Sift

Uncertain

0.0010

.;D

Sift4G

Uncertain

0.0020

D;D

Polyphen

0.88

.;P

Vest4

0.86

MVP

0.68

MPC

0.79

ClinPred

0.95

GERP RS

5.0

Varity_R

0.76

gMVP

0.76

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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