Variant chr16-69447277-C-T details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_030579.3(CYB5B):c.302C>T(p.Pro101Leu) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000756 in 1,613,022 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000078 ( 0 hom. )

Consequence

CYB5B
NM_030579.3 missense, splice_region

Scores

Splicing: ADA: 0.9893

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.96

Variant links:

Genes affected

CYB5B (HGNC:24374): (cytochrome b5 type B) Enables heme binding activity. Contributes to nitrite reductase (NO-forming) activity. Involved in nitric oxide biosynthetic process. Located in membrane. Part of nitric-oxide synthase complex. [provided by Alliance of Genome Resources, Apr 2022]

CYB5B links:

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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	Protein	UniProt
CYB5B	NM_030579.3 linkuse as main transcript	c.302C>T	p.Pro101Leu	missense_variant, splice_region_variant	2/5	ENST00000307892.13	NP_085056.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CYB5B	ENST00000307892.13 linkuse as main transcript	c.302C>T	p.Pro101Leu	missense_variant, splice_region_variant	2/5	1	NM_030579.3	ENSP00000308430	P2

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152126

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000623

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000129

AC:

AN:

248552

Hom.:

AF XY:

0.000171

AC XY:

AN XY:

134874

show subpopulations

Gnomad AFR exome

AF:

0.0000646

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000916

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.000166

GnomAD4 exome

AF:

0.0000780

AC:

114

AN:

1460778

Hom.:

Cov.:

AF XY:

0.0000922

AC XY:

AN XY:

726674

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000101

Gnomad4 SAS exome

AF:

0.000777

Gnomad4 FIN exome

AF:

0.0000378

Gnomad4 NFE exome

AF:

0.0000315

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.0000525

AC:

AN:

152244

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74442

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000623

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000453

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000121

AC:

ExAC

AF:

0.000149

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.0000547

EpiControl

AF:

0.00

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 submitter

clinical testing

Ambry Genetics

Aug 12, 2021

The c.302C>T (p.P101L) alteration is located in exon 2 (coding exon 2) of the CYB5B gene. This alteration results from a C to T substitution at nucleotide position 302, causing the proline (P) at amino acid position 101 to be replaced by a leucine (L). 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

0.30

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.22

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.23

T;.;T;T

Eigen

Uncertain

0.52

Eigen_PC

Uncertain

0.54

FATHMM_MKL

Uncertain

0.83

LIST_S2

Benign

0.83

T;T;T;T

M_CAP

Uncertain

0.12

MetaRNN

Benign

0.11

T;T;T;T

MetaSVM

Uncertain

0.41

MutationAssessor

Benign

1.9

L;.;.;.

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Benign

0.46

PROVEAN

Pathogenic

-7.9

D;D;D;D

REVEL

Uncertain

0.48

Sift

Uncertain

0.0010

D;D;D;D

Sift4G

Uncertain

0.0070

D;T;D;D

Polyphen

0.90

P;.;D;.

Vest4

0.22

MVP

0.92

MPC

0.28

ClinPred

0.30

GERP RS

5.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.8

Varity_R

0.89

gMVP

0.49

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

0.99

dbscSNV1_RF

Pathogenic

0.85

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