chr19-49857000-T-C

Position:

• chr19-49857000-T-C

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The ENST00000391842.6(PTOV1):​c.584T>C​(p.Ile195Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,228 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: PTOV1 ENST00000391842.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.178

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]

PTOV1-AS2 (HGNC:51284): (PTOV1 antisense RNA 2)

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.050928712).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PTOV1	NM_001394010.1	c.584T>C	p.Ile195Thr	missense_variant	6/12	ENST00000391842.6
PTOV1-AS2	NR_110730.1	n.566A>G		non_coding_transcript_exon_variant	5/5
PTOV1	NR_130963.2	n.664T>C		non_coding_transcript_exon_variant	6/13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PTOV1	ENST00000391842.6	c.584T>C	p.Ile195Thr	missense_variant	6/12	5	NM_001394010.1	P1
PTOV1-AS2	ENST00000593654.1	n.566A>G		non_coding_transcript_exon_variant	5/5	2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461228 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 726928

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

EpiCase AF: 0.0000545

EpiControl AF: 0.00

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

Mar 24, 2023

The c.584T>C (p.I195T) alteration is located in exon 6 (coding exon 6) of the PTOV1 gene. This alteration results from a T to C substitution at nucleotide position 584, causing the isoleucine (I) at amino acid position 195 to be replaced by a threonine (T). 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	Uncertain	0.42
BayesDel_addAF	Benign	-0.073	T
BayesDel_noAF	Benign	-0.34
CADD	Benign	18
DANN	Benign	0.85
DEOGEN2	Benign	0.0032	T;.;.;T;T;T;T
Eigen	Benign	-0.67
Eigen_PC	Benign	-0.47
FATHMM_MKL	Benign	0.53	D
LIST_S2	Benign	0.80	T;T;T;T;.;.;T
M_CAP	Benign	0.018	T
MetaRNN	Benign	0.051	T;T;T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.0	.;.;.;N;N;N;.
MutationTaster	Benign	0.70	N;N
PrimateAI	Uncertain	0.64	T
PROVEAN	Benign	1.1	.;.;.;N;.;.;.
REVEL	Benign	0.10
Sift	Benign	0.96	.;.;.;T;.;.;.
Sift4G	Benign	1.0	T;T;T;T;T;T;T
Polyphen		0.062	.;.;.;B;B;B;.
Vest4		0.33, 0.34, 0.32, 0.32
MutPred		0.30		.;.;.;Gain of catalytic residue at I195 (P = 0.0607);Gain of catalytic residue at I195 (P = 0.0607);Gain of catalytic residue at I195 (P = 0.0607);.;
MVP		0.39
MPC		0.14
ClinPred		0.081	T
GERP RS		4.3
Varity_R		0.051
gMVP		0.24

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-50360257;