chr3-189994952-A-T

Variant names:

• chr3-189994952-A-T
• rs1719596
• NM_018192.4:c.633+338T>A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_018192.4(P3H2):​c.633+338T>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 30)
• Consequence: P3H2 NM_018192.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.263
• Publications: 1 publications found

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]

P3H2 Gene-Disease associations (from GenCC):

• myopia, high, with cataract and vitreoretinal degeneration

  Inheritance: AR Classification: STRONG, MODERATE Submitted by: G2P, Ambry Genetics

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.88).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018192.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	P3H2	NM_018192.4	MANE Select	c.633+338T>A		intron	N/A	NP_060662.2
	P3H2	NM_001134418.2		c.90+338T>A		intron	N/A	NP_001127890.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	P3H2	ENST00000319332.10	TSL:1 MANE Select	c.633+338T>A		intron	N/A	ENSP00000316881.5
	P3H2	ENST00000427335.6	TSL:1	c.90+338T>A		intron	N/A	ENSP00000408947.2
	P3H2	ENST00000444866.5	TSL:4	c.90+338T>A		intron	N/A	ENSP00000391374.1

Frequencies

GnomAD3 genomes Cov.: 30

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 30

Alfa AF: 0.00 Hom.: 47645

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
CADD	Benign	0.64
DANN	Benign	0.62
PhyloP100		-0.26

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

Other links and lift over

dbSNP: rs1719596; hg19: chr3-189712741;