Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PM2PM5PP3_StrongPP5_Moderate

The NM_000397.4(CYBB):c.1499A>G(p.Asp500Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D500Y) has been classified as Pathogenic.

Frequency

Genomes: not found (cov: 23)

Consequence

CYBB
NM_000397.4 missense

Scores

Clinical Significance

Pathogenic criteria provided, single submitter P:2O:1

Conservation

PhyloP100: 8.89

Publications

14 publications found

Variant links:

Genes affected

CYBB (HGNC:2578): (cytochrome b-245 beta chain) Cytochrome b (-245) is composed of cytochrome b alpha (CYBA) and beta (CYBB) chain. It has been proposed as a primary component of the microbicidal oxidase system of phagocytes. CYBB deficiency is one of five described biochemical defects associated with chronic granulomatous disease (CGD). In this disorder, there is decreased activity of phagocyte NADPH oxidase; neutrophils are able to phagocytize bacteria but cannot kill them in the phagocytic vacuoles. The cause of the killing defect is an inability to increase the cell's respiration and consequent failure to deliver activated oxygen into the phagocytic vacuole. [provided by RefSeq, Jul 2008]

CYBB Gene-Disease associations (from GenCC):

granulomatous disease, chronic, X-linked
Inheritance: XL Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
chronic granulomatous disease
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
X-linked Mendelian susceptibility to mycobacterial diseases due to CYBB deficiency
Inheritance: XL, Unknown Classification: SUPPORTIVE, LIMITED Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)

CYBB links:

ENSG00000250349 (HGNC:):

ENSG00000250349 links:

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ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 10 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chrX-37809603-G-T is described in ClinVar as Pathogenic. ClinVar VariationId is 2581828.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.99

PP5

Variant X-37809604-A-G is Pathogenic according to our data. Variant chrX-37809604-A-G is described in ClinVar as Pathogenic. ClinVar VariationId is 10931.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000397.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CYBB	NM_000397.4	MANE Select	c.1499A>G	p.Asp500Gly	missense	Exon 12 of 13	NP_000388.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CYBB	ENST00000378588.5	TSL:1 MANE Select	c.1499A>G	p.Asp500Gly	missense	Exon 12 of 13	ENSP00000367851.4
ENSG00000250349	ENST00000465127.1	TSL:5	c.171+383604A>G		intron	N/A	ENSP00000417050.1
CYBB	ENST00000696171.1		c.1403A>G	p.Asp468Gly	missense	Exon 11 of 12	ENSP00000512462.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

ClinVar submissions as Germline

Significance:Pathogenic

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Granulomatous disease, chronic, X-linked (2)

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.73

BayesDel_noAF

Pathogenic

0.82

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.92

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.97

M_CAP

Pathogenic

0.96

MetaRNN

Pathogenic

0.99

MetaSVM

Pathogenic

1.1

MutationAssessor

Pathogenic

3.9

PhyloP100

8.9

PrimateAI

Uncertain

0.73

PROVEAN

Pathogenic

-6.7

REVEL

Pathogenic

0.98

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0040

Polyphen

1.0

Vest4

0.67

MutPred

0.96

Gain of sheet (P = 0.0827)

MVP

1.0

MPC

1.8

ClinPred

1.0

GERP RS

5.8

Varity_R

0.98

gMVP

0.88

Mutation Taster

=10/90

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.11

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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rs28935181

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

ClinVar submissions as Germline

Computational scores

Splicing

Publications

Other links and lift over