chr17-55773835-C-T

Variant names:

• chr17-55773835-C-T
• rs147596112
• NM_021213.4:c.451C>T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PP3_Moderate

The NM_021213.4(PCTP):​c.451C>T​(p.Arg151Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000812 in 1,612,870 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R151Q) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.00028 (0 hom., cov: 30)
  • Exomes 𝑓: 0.000060 (0 hom.)
• Consequence: PCTP NM_021213.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.82
• Publications: 1 publications found

Genes affected

PCTP (HGNC:8752): (phosphatidylcholine transfer protein) Enables phosphatidylcholine binding activity and phosphatidylcholine transporter activity. Involved in phospholipid transport. Predicted to be located in cytosol. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PP3: MetaRNN computational evidence supports a deleterious effect, 0.879

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PCTP	NM_021213.4	c.451C>T	p.Arg151Trp	missense_variant	Exon 4 of 6	ENST00000268896.10	NP_067036.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PCTP	ENST00000268896.10	c.451C>T	p.Arg151Trp	missense_variant	Exon 4 of 6	1	NM_021213.4	ENSP00000268896.4

Frequencies

GnomAD3 genomes AF: 0.000283 AC: 43 AN: 151846 Hom.: 0 Cov.: 30

Gnomad AFR AF: 0.00102

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000762 AC: 19 AN: 249400 AF XY: 0.0000371

Gnomad AFR exome AF: 0.00105

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000888

Gnomad OTH exome AF: 0.000165

GnomAD4 exome AF: 0.0000602 AC: 88 AN: 1460906 Hom.: 0 Cov.: 57 AF XY: 0.0000537 AC XY: 39 AN XY: 726608

African (AFR) AF: 0.00161 AC: 54 AN: 33466

American (AMR) AF: 0.00 AC: 0 AN: 44690

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26118

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39660

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86144

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53146

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5760

European-Non Finnish (NFE) AF: 0.0000162 AC: 18 AN: 1111552

Other (OTH) AF: 0.000215 AC: 13 AN: 60370

GnomAD4 genome AF: 0.000283 AC: 43 AN: 151964 Hom.: 0 Cov.: 30 AF XY: 0.000256 AC XY: 19 AN XY: 74280

African (AFR) AF: 0.00101 AC: 42 AN: 41432

American (AMR) AF: 0.00 AC: 0 AN: 15282

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5138

South Asian (SAS) AF: 0.00 AC: 0 AN: 4790

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10582

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 67960

Other (OTH) AF: 0.00 AC: 0 AN: 2106

Alfa AF: 0.000200 Hom.: 0

Bravo AF: 0.000385

ESP6500AA AF: 0.000908 AC: 4

ESP6500EA AF: 0.00 AC: 0

ExAC AF: 0.000107 AC: 13

EpiCase AF: 0.0000545

EpiControl AF: 0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Jun 22, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.451C>T (p.R151W) alteration is located in exon 4 (coding exon 4) of the PCTP gene. This alteration results from a C to T substitution at nucleotide position 451, causing the arginine (R) at amino acid position 151 to be replaced by a tryptophan (W). 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	Pathogenic	0.58
BayesDel_addAF	Pathogenic	0.17	D
BayesDel_noAF	Pathogenic	0.42
CADD	Pathogenic	32
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.78	D;D;D;.;T
Eigen	Pathogenic	0.70
Eigen_PC	Uncertain	0.62
FATHMM_MKL	Uncertain	0.86	D
LIST_S2	Pathogenic	0.98	D;D;D;D;D
M_CAP	Uncertain	0.24	D
MetaRNN	Pathogenic	0.88	D;D;D;D;D
MetaSVM	Pathogenic	0.97	D
MutationAssessor	Pathogenic	3.2	M;.;.;.;.
PhyloP100		2.8
PrimateAI	Benign	0.43	T
PROVEAN	Pathogenic	-7.8	D;.;.;.;.
REVEL	Pathogenic	0.91
Sift	Pathogenic	0.0	D;.;.;.;.
Sift4G	Pathogenic	0.0	D;D;D;D;D
Polyphen		1.0	D;.;.;.;.
Vest4		0.98
MVP		0.94
MPC		0.44
ClinPred		0.98	D
GERP RS		4.9
PromoterAI		-0.038	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.98
gMVP		0.84
Mutation Taster		=21/79	disease causing

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: rs147596112; hg19: chr17-53851196; COSMIC: COSV52122113;