19-40451463-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_000713.3(BLVRB):​c.364C>T​(p.Pro122Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000283 in 1,613,320 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00030 ( 0 hom. )

Consequence

BLVRB
NM_000713.3 missense

Scores

6
7
6

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.41
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 2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
BLVRBNM_000713.3 linkuse as main transcriptc.364C>T p.Pro122Ser missense_variant 4/5 ENST00000263368.9

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
BLVRBENST00000263368.9 linkuse as main transcriptc.364C>T p.Pro122Ser missense_variant 4/51 NM_000713.3 P1

Frequencies

GnomAD3 genomes
AF:
0.000145
AC:
22
AN:
152098
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000483
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:
0.000294
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000116
AC:
29
AN:
249164
Hom.:
0
AF XY:
0.0000965
AC XY:
13
AN XY:
134720
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000291
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.0000469
Gnomad NFE exome
AF:
0.000213
Gnomad OTH exome
AF:
0.000495
GnomAD4 exome
AF:
0.000297
AC:
434
AN:
1461128
Hom.:
0
Cov.:
30
AF XY:
0.000257
AC XY:
187
AN XY:
726792
show subpopulations
Gnomad4 AFR exome
AF:
0.0000598
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000116
Gnomad4 FIN exome
AF:
0.0000562
Gnomad4 NFE exome
AF:
0.000378
Gnomad4 OTH exome
AF:
0.000133
GnomAD4 genome
AF:
0.000145
AC:
22
AN:
152192
Hom.:
0
Cov.:
32
AF XY:
0.000148
AC XY:
11
AN XY:
74382
show subpopulations
Gnomad4 AFR
AF:
0.0000481
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:
0.000294
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000233
Hom.:
0
Bravo
AF:
0.000155
TwinsUK
AF:
0.00
AC:
0
ALSPAC
AF:
0.000259
AC:
1
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000233
AC:
2
ExAC
AF:
0.000115
AC:
14
EpiCase
AF:
0.000164
EpiControl
AF:
0.000297

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 29, 2021The c.364C>T (p.P122S) alteration is located in exon 4 (coding exon 4) of the BLVRB gene. This alteration results from a C to T substitution at nucleotide position 364, causing the proline (P) at amino acid position 122 to be replaced by a serine (S). 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
0.63
BayesDel_addAF
Benign
-0.11
T
BayesDel_noAF
Uncertain
-0.080
CADD
Pathogenic
28
DANN
Pathogenic
1.0
DEOGEN2
Benign
0.21
.;T
Eigen
Pathogenic
0.82
Eigen_PC
Pathogenic
0.77
FATHMM_MKL
Uncertain
0.97
D
LIST_S2
Uncertain
0.90
D;D
M_CAP
Benign
0.019
T
MetaRNN
Uncertain
0.72
D;D
MetaSVM
Benign
-0.68
T
MutationAssessor
Pathogenic
3.0
.;M
MutationTaster
Benign
1.0
D
PrimateAI
Uncertain
0.61
T
PROVEAN
Pathogenic
-6.6
.;D
REVEL
Uncertain
0.47
Sift
Benign
0.039
.;D
Sift4G
Uncertain
0.043
.;D
Polyphen
1.0
.;D
Vest4
0.58
MVP
0.56
MPC
0.76
ClinPred
0.82
D
GERP RS
4.8
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.9
Varity_R
0.66
gMVP
0.75

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.

Other links and lift over

dbSNP: rs139843463; hg19: chr19-40957370; API