rs180982841

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBP6

The NM_000532.5(PCCB):c.763+10C>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000377 in 1,457,310 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00049 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00036 ( 1 hom. )

Consequence

PCCB
NM_000532.5 intron

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:2

Conservation

PhyloP100: 0.0910

Variant links:

Genes affected

PCCB (HGNC:8654): (propionyl-CoA carboxylase subunit beta) The protein encoded by this gene is a subunit of the propionyl-CoA carboxylase (PCC) enzyme, which is involved in the catabolism of propionyl-CoA. PCC is a mitochondrial enzyme that probably acts as a dodecamer of six alpha subunits and six beta subunits. This gene encodes the beta subunit of PCC. Defects in this gene are a cause of propionic acidemia type II (PA-2). Multiple transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, May 2010]

PCCB links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.82).

BP6

Variant 3-136293874-C-G is Benign according to our data. Variant chr3-136293874-C-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 523374.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=2, Likely_benign=1, Benign=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	MANE
PCCB	NM_000532.5 linkuse as main transcript	c.763+10C>G	intron_variant	ENST00000251654.9
PCCB	NM_001178014.2 linkuse as main transcript	c.823+10C>G	intron_variant
PCCB	XM_011512873.2 linkuse as main transcript	c.763+10C>G	intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PCCB	ENST00000251654.9 linkuse as main transcript	c.763+10C>G		intron_variant		1	NM_000532.5	P2	P05166-1

Frequencies

GnomAD3 genomes

AF:

0.000493

AC:

AN:

152096

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000725

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00471

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000323

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000458

AC:

115

AN:

250998

Hom.:

AF XY:

0.000472

AC XY:

AN XY:

135628

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00386

Gnomad NFE exome

AF:

0.000264

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000363

AC:

474

AN:

1305096

Hom.:

Cov.:

AF XY:

0.000368

AC XY:

242

AN XY:

657786

show subpopulations

Gnomad4 AFR exome

AF:

0.0000983

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000120

Gnomad4 FIN exome

AF:

0.00389

Gnomad4 NFE exome

AF:

0.000260

Gnomad4 OTH exome

AF:

0.000109

GnomAD4 genome

AF:

0.000493

AC:

AN:

152214

Hom.:

Cov.:

AF XY:

0.000631

AC XY:

AN XY:

74434

show subpopulations

Gnomad4 AFR

AF:

0.0000722

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00471

Gnomad4 NFE

AF:

0.000323

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000430

Hom.:

Bravo

AF:

0.000136

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Propionic acidemia

Uncertain:2Benign:1

Benign, criteria provided, single submitter	clinical testing	Invitae	Jan 31, 2024	- -
Uncertain significance, no assertion criteria provided	clinical testing	Natera, Inc.	Jan 05, 2020	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Global developmental delay;C5574662:Hyperammonemia

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Centre for Mendelian Genomics, University Medical Centre Ljubljana

Jan 01, 2017

- -

PCCB-related disorder

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Oct 16, 2023

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.82

Cadd

Benign

Dann

Benign

0.59

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

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

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