19-49854442-G-T

Position:

• chr19-49854442-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The ENST00000391842.6(PTOV1):​c.208G>T​(p.Gly70Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,459,650 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: PTOV1 ENST00000391842.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.752

Genes affected

PTOV1 (HGNC:9632): (PTOV1 extended AT-hook containing adaptor protein) This gene encodes a protein that was found to be overexpressed in prostate adenocarcinomas. The encoded protein was found to interact with the lipid raft protein flotillin-1 and shuttle it from the cytoplasm to the nucleus in a cell cycle dependent manner. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Feb 2015]

(HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.19150677).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PTOV1	NM_001394010.1	c.208G>T	p.Gly70Cys	missense_variant	2/12	ENST00000391842.6
PTOV1	NR_130963.2	n.288G>T		non_coding_transcript_exon_variant	2/13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PTOV1	ENST00000391842.6	c.208G>T	p.Gly70Cys	missense_variant	2/12	5	NM_001394010.1	P1
	ENST00000601211.1	n.161+13C>A		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1459650 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 726140

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: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 12, 2021

The c.208G>T (p.G70C) alteration is located in exon 2 (coding exon 2) of the PTOV1 gene. This alteration results from a G to T substitution at nucleotide position 208, causing the glycine (G) at amino acid position 70 to be replaced by a cysteine (C). 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	0.12
BayesDel_addAF	Uncertain	0.013	T
BayesDel_noAF	Benign	-0.22
CADD	Benign	18
DANN	Uncertain	0.99
DEOGEN2	Benign	0.022	T;.;.;T;T;T;T
Eigen	Benign	-0.46
Eigen_PC	Benign	-0.48
FATHMM_MKL	Benign	0.53	D
LIST_S2	Benign	0.75	T;T;T;T;.;.;T
M_CAP	Uncertain	0.11	D
MetaRNN	Benign	0.19	T;T;T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.0	.;.;.;N;N;N;.
MutationTaster	Benign	0.99	N;N
PrimateAI	Uncertain	0.73	T
PROVEAN	Benign	-1.3	.;.;.;N;.;.;.
REVEL	Benign	0.13
Sift	Uncertain	0.0030	.;.;.;D;.;.;.
Sift4G	Uncertain	0.031	D;D;D;D;D;D;D
Polyphen		0.99	.;.;.;D;D;D;.
Vest4		0.50, 0.49, 0.52, 0.50
MutPred		0.26		.;.;.;Loss of glycosylation at S72 (P = 0.0493);Loss of glycosylation at S72 (P = 0.0493);Loss of glycosylation at S72 (P = 0.0493);.;
MVP		0.70
MPC		0.52
ClinPred		0.53	D
GERP RS		2.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.20
gMVP		0.40

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-50357699;