19-40458447-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_000713.3(BLVRB):​c.178G>A​(p.Asp60Asn) variant causes a missense change. The variant allele was found at a frequency of 0.0000501 in 1,597,856 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 30)
Exomes 𝑓: 0.000048 ( 0 hom. )

Consequence

BLVRB
NM_000713.3 missense

Scores

9
10

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.36
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.27074522).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
BLVRBNM_000713.3 linkuse as main transcriptc.178G>A p.Asp60Asn missense_variant 2/5 ENST00000263368.9

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
BLVRBENST00000263368.9 linkuse as main transcriptc.178G>A p.Asp60Asn missense_variant 2/51 NM_000713.3 P1

Frequencies

GnomAD3 genomes
AF:
0.0000657
AC:
10
AN:
152196
Hom.:
0
Cov.:
30
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000196
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000827
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000441
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000110
AC:
24
AN:
217436
Hom.:
0
AF XY:
0.000161
AC XY:
19
AN XY:
117866
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.000349
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.000368
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000313
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000484
AC:
70
AN:
1445660
Hom.:
0
Cov.:
35
AF XY:
0.0000766
AC XY:
55
AN XY:
717650
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.000236
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.000576
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000634
Gnomad4 OTH exome
AF:
0.0000837
GnomAD4 genome
AF:
0.0000657
AC:
10
AN:
152196
Hom.:
0
Cov.:
30
AF XY:
0.000108
AC XY:
8
AN XY:
74354
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.000196
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.000827
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000441
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.0000756
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.0000909
AC:
11
Asia WGS
AF:
0.000866
AC:
3
AN:
3478

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingAmbry GeneticsNov 10, 2022The c.178G>A (p.D60N) alteration is located in exon 2 (coding exon 2) of the BLVRB gene. This alteration results from a G to A substitution at nucleotide position 178, causing the aspartic acid (D) at amino acid position 60 to be replaced by an asparagine (N). 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
Benign
0.25
BayesDel_addAF
Benign
-0.37
T
BayesDel_noAF
Benign
-0.46
CADD
Uncertain
25
DANN
Uncertain
1.0
DEOGEN2
Benign
0.055
.;T;T
Eigen
Uncertain
0.53
Eigen_PC
Uncertain
0.43
FATHMM_MKL
Uncertain
0.91
D
LIST_S2
Benign
0.83
T;T;T
M_CAP
Benign
0.056
D
MetaRNN
Benign
0.27
T;T;T
MetaSVM
Benign
-0.55
T
MutationAssessor
Uncertain
2.8
.;.;M
MutationTaster
Benign
1.0
D
PrimateAI
Uncertain
0.63
T
PROVEAN
Uncertain
-3.3
.;.;D
REVEL
Benign
0.24
Sift
Uncertain
0.0020
.;.;D
Sift4G
Uncertain
0.019
.;D;D
Polyphen
0.99
.;.;D
Vest4
0.34, 0.32
MVP
0.51
MPC
0.37
ClinPred
0.55
D
GERP RS
4.0
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.1
Varity_R
0.84
gMVP
0.71

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.

Other links and lift over

dbSNP: rs150228804; hg19: chr19-40964354; API