rs74070022

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP6BS1BS2

The NM_022356.4(P3H1):​c.978C>T​(p.Thr326Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00218 in 1,614,188 control chromosomes in the GnomAD database, including 60 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 0.012 ( 28 hom., cov: 33)
Exomes 𝑓: 0.0012 ( 32 hom. )

Consequence

P3H1
NM_022356.4 synonymous

Scores

2

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:4

Conservation

PhyloP100: 1.25
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP6
Variant 1-42757885-G-A is Benign according to our data. Variant chr1-42757885-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 468990.We mark this variant Likely_benign, oryginal submissions are: {Benign=4, Uncertain_significance=1}.
BS1
Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0115 (1755/152314) while in subpopulation AFR AF= 0.0407 (1690/41560). AF 95% confidence interval is 0.0391. There are 28 homozygotes in gnomad4. There are 787 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
BS2
High Homozygotes in GnomAd4 at 28 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
P3H1NM_022356.4 linkc.978C>T p.Thr326Thr synonymous_variant Exon 5 of 15 ENST00000296388.10 NP_071751.3 Q32P28-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
P3H1ENST00000296388.10 linkc.978C>T p.Thr326Thr synonymous_variant Exon 5 of 15 1 NM_022356.4 ENSP00000296388.5 Q32P28-1

Frequencies

GnomAD3 genomes
AF:
0.0115
AC:
1752
AN:
152196
Hom.:
28
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0407
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00321
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000414
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000294
Gnomad OTH
AF:
0.00574
GnomAD3 exomes
AF:
0.00297
AC:
747
AN:
251490
Hom.:
11
AF XY:
0.00210
AC XY:
286
AN XY:
135920
show subpopulations
Gnomad AFR exome
AF:
0.0421
Gnomad AMR exome
AF:
0.00136
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.0000653
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000703
Gnomad OTH exome
AF:
0.000814
GnomAD4 exome
AF:
0.00121
AC:
1771
AN:
1461874
Hom.:
32
Cov.:
32
AF XY:
0.00101
AC XY:
731
AN XY:
727242
show subpopulations
Gnomad4 AFR exome
AF:
0.0453
Gnomad4 AMR exome
AF:
0.00159
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000812
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000216
Gnomad4 OTH exome
AF:
0.00240
GnomAD4 genome
AF:
0.0115
AC:
1755
AN:
152314
Hom.:
28
Cov.:
33
AF XY:
0.0106
AC XY:
787
AN XY:
74488
show subpopulations
Gnomad4 AFR
AF:
0.0407
Gnomad4 AMR
AF:
0.00320
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.000415
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000294
Gnomad4 OTH
AF:
0.00568
Alfa
AF:
0.00500
Hom.:
3
Bravo
AF:
0.0138
Asia WGS
AF:
0.00115
AC:
4
AN:
3478
EpiCase
AF:
0.000273
EpiControl
AF:
0.000237

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:4
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

Osteogenesis imperfecta type 8 Benign:2
Jan 29, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Oct 16, 2024
ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Osteogenesis Imperfecta, Recessive Uncertain:1
Apr 27, 2017
Illumina Laboratory Services, Illumina
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

not specified Benign:1
Jan 18, 2017
GeneDx
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Osteogenesis imperfecta Benign:1
Dec 06, 2021
Genome Diagnostics Laboratory, The Hospital for Sick Children
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.42
CADD
Benign
14
DANN
Benign
0.75
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.22
Details are displayed if max score is > 0.2
DS_AG_spliceai
0.22
Position offset: -28

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.

Other links and lift over

dbSNP: rs74070022; hg19: chr1-43223556; API