Genetic Variant NM_000097.7:c.883C>G (chr3-98588783-G-C) – ACMG Classification: Likely_pathogenic (7 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM2PP3_StrongPP5

The NM_000097.7(CPOX):c.883C>G(p.His295Asp) 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 (no stars).

Frequency

Genomes: not found (cov: 33)

Consequence

CPOX
NM_000097.7 missense

Scores

Clinical Significance

Pathogenic no assertion criteria provided P:1

Conservation

PhyloP100: 9.56

Publications

4 publications found

Variant links:

Genes affected

CPOX (HGNC:2321): (coproporphyrinogen oxidase) The protein encoded by this gene is the sixth enzyme of the heme biosynthetic pathway. The encoded enzyme is soluble and found in the intermembrane space of mitochondria. This enzyme catalyzes the stepwise oxidative decarboxylation of coproporphyrinogen III to protoporphyrinogen IX, a precursor of heme. Defects in this gene are a cause of hereditary coproporphyria (HCP).[provided by RefSeq, Oct 2009]

CPOX Gene-Disease associations (from GenCC):

CPOX-related hereditary coproporphyria
Inheritance: SD Classification: DEFINITIVE Submitted by: ClinGen
hereditary coproporphyria
Inheritance: AD, AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Genomics England PanelApp
harderoporphyria
Inheritance: AR Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Genomics England PanelApp

CPOX links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.985

PP5

Variant 3-98588783-G-C is Pathogenic according to our data. Variant chr3-98588783-G-C is described in ClinVar as Pathogenic. ClinVar VariationId is 456.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000097.7. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CPOX	NM_000097.7	MANE Select	c.883C>G	p.His295Asp	missense	Exon 4 of 7	NP_000088.3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CPOX	ENST00000647941.2	MANE Select	c.883C>G	p.His295Asp	missense	Exon 4 of 7	ENSP00000497326.1
CPOX	ENST00000946176.1		c.970C>G	p.His324Asp	missense	Exon 5 of 8	ENSP00000616235.1
CPOX	ENST00000932270.1		c.880C>G	p.His294Asp	missense	Exon 4 of 7	ENSP00000602329.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

ClinVar

ClinVar submissions as Germline

Significance:Pathogenic

Revision:no assertion criteria provided

View on ClinVar

Pathogenic

VUS

Benign

Condition

Coproporphyria (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.45

BayesDel_addAF

Pathogenic

0.52

BayesDel_noAF

Pathogenic

0.50

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.74

Eigen

Pathogenic

1.0

Eigen_PC

Pathogenic

0.97

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.98

M_CAP

Pathogenic

0.31

MetaRNN

Pathogenic

0.99

MetaSVM

Pathogenic

1.0

MutationAssessor

Uncertain

2.8

PhyloP100

9.6

PrimateAI

Uncertain

0.60

PROVEAN

Pathogenic

-8.4

REVEL

Pathogenic

0.92

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0020

Polyphen

1.0

Vest4

0.88

MutPred

0.87

Gain of helix (P = 0.132)

MVP

0.99

MPC

1.7

ClinPred

1.0

GERP RS

5.9

Varity_R

0.94

gMVP

0.93

Mutation Taster

=8/92

disease causing (ClinVar)

(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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over