rs866278783

Positions:

• chr1-42757902-C-A
• chr1-42757902-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_022356.4(P3H1):​c.961G>T​(p.Val321Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,874 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V321I) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: P3H1 NM_022356.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.67

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.40721262).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
P3H1	NM_022356.4	c.961G>T	p.Val321Phe	missense_variant	5/15	ENST00000296388.10	NP_071751.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
P3H1	ENST00000296388.10	c.961G>T	p.Val321Phe	missense_variant	5/15	1	NM_022356.4	ENSP00000296388.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461874 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 727242

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.36
BayesDel_addAF	Uncertain	0.029	T
BayesDel_noAF	Benign	-0.20
CADD	Benign	18
DANN	Uncertain	0.99
DEOGEN2	Benign	0.35	.;.;T
Eigen	Benign	-0.048
Eigen_PC	Benign	-0.0019
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Uncertain	0.93	D;D;D
M_CAP	Benign	0.065	D
MetaRNN	Benign	0.41	T;T;T
MetaSVM	Benign	-0.65	T
MutationAssessor	Uncertain	2.4	M;M;M
PrimateAI	Benign	0.29	T
PROVEAN	Benign	-2.1	N;N;N
REVEL	Uncertain	0.30
Sift	Uncertain	0.0090	D;D;D
Sift4G	Uncertain	0.038	D;D;D
Polyphen		0.94, 0.72	.;P;P
Vest4		0.49
MutPred		0.38		Gain of ubiquitination at K325 (P = 0.0797);Gain of ubiquitination at K325 (P = 0.0797);Gain of ubiquitination at K325 (P = 0.0797);
MVP		0.53
MPC		0.61
ClinPred		0.96	D
GERP RS		1.8
Varity_R		0.22
gMVP		0.69

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		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: rs866278783; hg19: chr1-43223573;