3-189963671-C-T

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The NM_018192.4(P3H2):c.2034+287G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00905 in 388,160 control chromosomes in the GnomAD database, including 67 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.015 (38 hom., cov: 32)
  • Exomes 𝑓: 0.0053 (29 hom.)
• Consequence: P3H2 NM_018192.4 intron
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.794

Genes affected

P3H2 (HGNC:19317): (prolyl 3-hydroxylase 2) This gene encodes a member of the prolyl 3-hydroxylase subfamily of 2-oxo-glutarate-dependent dioxygenases. These enzymes play a critical role in collagen chain assembly, stability and cross-linking by catalyzing post-translational 3-hydroxylation of proline residues. Mutations in this gene are associated with nonsyndromic severe myopia with cataract and vitreoretinal degeneration, and downregulation of this gene may play a role in breast cancer. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Dec 2011]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-1.03).
• BP6: Variant 3-189963671-C-T is Benign according to our data. Variant chr3-189963671-C-T is described in ClinVar as [Benign]. Clinvar id is 1235572.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0149 (2267/152130) while in subpopulation AFR AF= 0.0482 (1998/41492). AF 95% confidence interval is 0.0464. There are 38 homozygotes in gnomad4. There are 1086 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd at 38 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
P3H2	NM_018192.4	c.2034+287G>A		intron_variant		ENST00000319332.10
P3H2	NM_001134418.2	c.1491+287G>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
P3H2	ENST00000319332.10	c.2034+287G>A		intron_variant		1	NM_018192.4	P1
P3H2	ENST00000427335.6	c.1491+287G>A		intron_variant		1
P3H2	ENST00000463171.5	n.542G>A		non_coding_transcript_exon_variant	3/3	5
P3H2	ENST00000490940.1	n.164+287G>A		intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes AF: 0.0149 AC: 2266 AN: 152012 Hom.: 38 Cov.: 32

Gnomad AFR AF: 0.0483

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00806

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.0216

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.000279

Gnomad OTH AF: 0.0105

GnomAD4 exome AF: 0.00528 AC: 1246 AN: 236030 Hom.: 29 Cov.: 0 AF XY: 0.00626 AC XY: 781 AN XY: 124800

Gnomad4 AFR exome AF: 0.0439

Gnomad4 AMR exome AF: 0.00355

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000732

Gnomad4 SAS exome AF: 0.0236

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000253

Gnomad4 OTH exome AF: 0.00506

GnomAD4 genome AF: 0.0149 AC: 2267 AN: 152130 Hom.: 38 Cov.: 32 AF XY: 0.0146 AC XY: 1086 AN XY: 74374

Gnomad4 AFR AF: 0.0482

Gnomad4 AMR AF: 0.00805

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.0216

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000279

Gnomad4 OTH AF: 0.0104

Alfa AF: 0.0122 Hom.: 3

Bravo AF: 0.0172

Asia WGS AF: 0.0180 AC: 62 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Feb 14, 2019

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-1.0
Cadd	Benign	0.65
Dann	Benign	0.68

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

Other links and lift over

dbSNP: rs143985056; hg19: chr3-189681460;