chr1-42746753-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_022356.4(P3H1):c.2155G>A(p.Glu719Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000875 in 1,553,798 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000076 ( 0 hom. )

Consequence

P3H1
NM_022356.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: -2.93

Publications

1 publications found

Variant links:

Genes affected

P3H1 (HGNC:19316): (prolyl 3-hydroxylase 1) This gene encodes an enzyme that is a member of the collagen prolyl hydroxylase family. These enzymes are localized to the endoplasmic reticulum and their activity is required for proper collagen synthesis and assembly. Mutations in this gene are associated with osteogenesis imperfecta type VIII. Three alternatively spliced transcript variants encoding different isoforms have been described. Other variants may exist, but their biological validity has not been determined. [provided by RefSeq, Aug 2011]

P3H1 Gene-Disease associations (from GenCC):

osteogenesis imperfecta type 8
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
osteogenesis imperfecta type 2
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
osteogenesis imperfecta type 3
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

P3H1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.01901722).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
P3H1	NM_022356.4 link	c.2155G>A	p.Glu719Lys	missense_variant	Exon 15 of 15	ENST00000296388.10	NP_071751.3	Q32P28-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
P3H1	ENST00000296388.10 link	c.2155G>A	p.Glu719Lys	missense_variant	Exon 15 of 15	1	NM_022356.4	ENSP00000296388.5		Q32P28-1

Frequencies

GnomAD3 genomes

AF:

0.000197

AC:

AN:

152006

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000580

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000561

AC:

AN:

160458

AF XY:

0.0000588

show subpopulations

Gnomad AFR exome

AF:

0.000484

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000263

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000159

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000756

AC:

106

AN:

1401674

Hom.:

Cov.:

AF XY:

0.0000853

AC XY:

AN XY:

691566

show subpopulations

African (AFR)

AF:

0.000505

AC:

AN:

31678

American (AMR)

AF:

0.0000558

AC:

AN:

35832

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25198

East Asian (EAS)

AF:

0.000139

AC:

AN:

35874

South Asian (SAS)

AF:

0.0000377

AC:

AN:

79524

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49480

Middle Eastern (MID)

AF:

0.000176

AC:

AN:

5698

European-Non Finnish (NFE)

AF:

0.0000713

AC:

AN:

1080238

Other (OTH)

AF:

0.0000344

AC:

AN:

58152

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.456

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000197

AC:

AN:

152124

Hom.:

Cov.:

AF XY:

0.000188

AC XY:

AN XY:

74382

show subpopulations

African (AFR)

AF:

0.000578

AC:

AN:

41490

American (AMR)

AF:

0.000196

AC:

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3464

East Asian (EAS)

AF:

0.000193

AC:

AN:

5176

South Asian (SAS)

AF:

0.00

AC:

AN:

4814

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10602

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

67974

Other (OTH)

AF:

0.00

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000456

Hom.:

Bravo

AF:

0.000178

ESP6500AA

AF:

0.000723

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000371

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Osteogenesis imperfecta type 8

Uncertain:2

Aug 26, 2021

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces glutamic acid with lysine at codon 719 of the P3H1 protein (p.Glu719Lys). The glutamic acid residue is weakly conserved and there is a small physicochemical difference between glutamic acid and lysine. This variant is present in population databases (rs372407655, ExAC 0.09%). This variant has not been reported in the literature in individuals affected with P3H1-related conditions. ClinVar contains an entry for this variant (Variation ID: 536810). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The lysine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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. -

Apr 11, 2023

Genome-Nilou Lab

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Osteogenesis imperfecta

Uncertain:1

Apr 01, 2020

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Inborn genetic diseases

Uncertain:1

Nov 28, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.2155G>A (p.E719K) alteration is located in exon 15 (coding exon 15) of the P3H1 gene. This alteration results from a G to A substitution at nucleotide position 2155, causing the glutamic acid (E) at amino acid position 719 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.061

BayesDel_addAF

Benign

-0.60

BayesDel_noAF

Benign

-0.75

CADD

Benign

0.051

(source)

DANN

Benign

0.40

DEOGEN2

Benign

0.091

Eigen

Benign

-1.9

Eigen_PC

Benign

-2.0

FATHMM_MKL

Benign

0.012

LIST_S2

Benign

0.51

M_CAP

Benign

0.0074

MetaRNN

Benign

0.019

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.69

PhyloP100

-2.9

PROVEAN

Benign

-0.85

REVEL

Benign

0.042

Sift

Benign

0.56

Sift4G

Benign

0.48

Polyphen

0.0

Vest4

0.067

MVP

0.099

ClinPred

0.0078

GERP RS

-10

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.045

Mutation Taster

=98/2

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

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chr1-42746753-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over