19-7630627-G-C

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_001171155.2(PET100):c.82G>C(p.Glu28Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000722 in 1,384,928 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E28K) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 7.2e-7 ( 0 hom. )

Consequence

PET100
NM_001171155.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.49

Publications

0 publications found

Variant links:

Genes affected

PET100 (HGNC:40038): (PET100 cytochrome c oxidase chaperone) Mitochondrial complex IV, or cytochrome c oxidase, is a large transmembrane protein complex that is part of the respiratory electron transport chain of mitochondria. The small protein encoded by this gene plays a role in the biogenesis of mitochondrial complex IV. This protein localizes to the inner mitochondrial membrane and is exposed to the intermembrane space. Mutations in this gene are associated with mitochondrial complex IV deficiency. This gene has a pseudogene on chromosome 3. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2014]

PET100 links:

ENSG00000268400 (HGNC:):

ENSG00000268400 links:

STXBP2 (HGNC:11445): (syntaxin binding protein 2) This gene encodes a member of the STXBP/unc-18/SEC1 family. The encoded protein is involved in intracellular trafficking, control of SNARE (soluble NSF attachment protein receptor) complex assembly, and the release of cytotoxic granules by natural killer cells. Mutations in this gene are associated with familial hemophagocytic lymphohistiocytosis. Alternatively spliced transcript variants encoding different isoforms have been noted for this gene. [provided by RefSeq, Jan 2013]

STXBP2 Gene-Disease associations (from GenCC):

familial hemophagocytic lymphohistiocytosis 5
Inheritance: AR, AD Classification: DEFINITIVE, STRONG, LIMITED Submitted by: Ambry Genetics, ClinGen, Labcorp Genetics (formerly Invitae)
hereditary hemophagocytic lymphohistiocytosis
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
microvillus inclusion disease
Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

STXBP2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.2892535).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PET100	NM_001171155.2 link	c.82G>C	p.Glu28Gln	missense_variant	Exon 2 of 4	ENST00000594797.6	NP_001164626.1	P0DJ07
PET100	NR_033242.2 link	n.123G>C		non_coding_transcript_exon_variant	Exon 2 of 5
STXBP2	NM_001414484.1 link	c.-116G>C		5_prime_UTR_variant	Exon 2 of 21		NP_001401413.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PET100	ENST00000594797.6 link	c.82G>C	p.Glu28Gln	missense_variant	Exon 2 of 4	1	NM_001171155.2	ENSP00000470539.1		P0DJ07
ENSG00000268400	ENST00000698368.1 link	n.82G>C		non_coding_transcript_exon_variant	Exon 2 of 20			ENSP00000513686.1		A0A8V8TM65

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.22e-7

AC:

AN:

1384928

Hom.:

Cov.:

AF XY:

0.00000146

AC XY:

AN XY:

683396

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31592

American (AMR)

AF:

0.00

AC:

AN:

35700

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25182

East Asian (EAS)

AF:

0.00

AC:

AN:

35734

South Asian (SAS)

AF:

0.00

AC:

AN:

79234

European-Finnish (FIN)

AF:

0.00

AC:

AN:

35016

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5696

European-Non Finnish (NFE)

AF:

9.27e-7

AC:

AN:

1078858

Other (OTH)

AF:

0.00

AC:

AN:

57916

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Sep 01, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces glutamic acid, which is acidic and polar, with glutamine, which is neutral and polar, at codon 28 of the PET100 protein (p.Glu28Gln). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with PET100-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.096

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.47

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.010

T;.

Eigen

Benign

-0.13

Eigen_PC

Benign

-0.063

FATHMM_MKL

Benign

0.74

LIST_S2

Benign

0.83

T;T

M_CAP

Benign

0.010

MetaRNN

Benign

0.29

T;T

MetaSVM

Benign

-1.0

PhyloP100

2.5

PrimateAI

Benign

0.35

Sift4G

Benign

0.063

T;D

Polyphen

0.30

B;.

Vest4

0.31

MutPred

0.70

Loss of sheet (P = 0.1907);Loss of sheet (P = 0.1907);

MVP

0.072

ClinPred

0.90

GERP RS

1.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.13

gMVP

0.84

Mutation Taster

=97/3

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over