Genetic Variant CYB5R4:p.Arg17Cys (chr6-83859831-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_016230.4(CYB5R4):c.49C>T(p.Arg17Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000616 in 1,461,104 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

CYB5R4
NM_016230.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.05

Publications

0 publications found

Variant links:

Genes affected

CYB5R4 (HGNC:20147): (cytochrome b5 reductase 4) NCB5OR is a flavohemoprotein that contains functional domains found in both cytochrome b5 (CYB5A; MIM 613218) and CYB5 reductase (CYB5R3; MIM 613213) (Zhu et al., 1999 [PubMed 10611283]).[supplied by OMIM, Jan 2010]

CYB5R4 links:

RIPPLY2-CYB5R4 (HGNC:):

RIPPLY2-CYB5R4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_016230.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CYB5R4	NM_016230.4	MANE Select	c.49C>T	p.Arg17Cys	missense	Exon 1 of 16	NP_057314.2	Q7L1T6
RIPPLY2-CYB5R4	NM_001400774.1		c.-27-4344C>T		intron	N/A	NP_001387703.1	B2R7W7
RIPPLY2-CYB5R4	NR_174603.1		n.235-4344C>T		intron	N/A

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CYB5R4	ENST00000369681.10	TSL:1 MANE Select	c.49C>T	p.Arg17Cys	missense	Exon 1 of 16	ENSP00000358695.3	Q7L1T6
CYB5R4	ENST00000942770.1		c.49C>T	p.Arg17Cys	missense	Exon 1 of 16	ENSP00000612829.1
CYB5R4	ENST00000942768.1		c.49C>T	p.Arg17Cys	missense	Exon 1 of 16	ENSP00000612827.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000407

AC:

AN:

245728

AF XY:

0.00

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000908

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000616

AC:

AN:

1461104

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

726848

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33468

American (AMR)

AF:

0.00

AC:

AN:

44668

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26098

East Asian (EAS)

AF:

0.00

AC:

AN:

39680

South Asian (SAS)

AF:

0.00

AC:

AN:

86106

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53138

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.00000809

AC:

AN:

1111838

Other (OTH)

AF:

0.00

AC:

AN:

60344

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000468

Hom.:

ExAC

AF:

0.00000824

AC:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.84

BayesDel_addAF

Uncertain

0.033

BayesDel_noAF

Benign

-0.19

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.22

Eigen

Benign

-0.30

Eigen_PC

Benign

-0.26

FATHMM_MKL

Benign

0.63

LIST_S2

Uncertain

0.96

M_CAP

Pathogenic

0.36

MetaRNN

Uncertain

0.70

MetaSVM

Benign

-0.98

MutationAssessor

Uncertain

2.4

PhyloP100

2.1

PrimateAI

Uncertain

0.68

PROVEAN

Uncertain

-2.9

REVEL

Benign

0.28

Sift

Uncertain

0.0020

Sift4G

Pathogenic

0.0010

Polyphen

0.76

Vest4

0.67

MutPred

0.33

Loss of MoRF binding (P = 0.0027)

MVP

0.83

MPC

0.73

ClinPred

0.98

GERP RS

3.8

PromoterAI

-0.010

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.42

gMVP

0.58

Mutation Taster

=69/31

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over