6-170583573-T-C

Variant summary

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

The NM_002598.4(PDCD2):c.458A>G(p.Tyr153Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000616 in 1,461,612 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 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: 0.0000062 (0 hom.)
• Consequence: PDCD2 NM_002598.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.697

Genes affected

PDCD2 (HGNC:8762): (programmed cell death 2) This gene encodes a nuclear protein expressed in a variety of tissues. Expression of this gene has been shown to be repressed by B-cell CLL/lymphoma 6 (BCL6), a transcriptional repressor required for lymph node germinal center development, suggesting that BCL6 regulates apoptosis by its effects on this protein. Alternative splicing results in multiple transcript variants and pseudogenes have been identified on chromosomes 9 and 12. [provided by RefSeq, Dec 2010]

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=0.2851165).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PDCD2	NM_002598.4	c.458A>G	p.Tyr153Cys	missense_variant	2/6	ENST00000541970.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PDCD2	ENST00000541970.6	c.458A>G	p.Tyr153Cys	missense_variant	2/6	1	NM_002598.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000796 AC: 2 AN: 251192 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135756

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000544

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000616 AC: 9 AN: 1461612 Hom.: 0 Cov.: 32 AF XY: 0.00000413 AC XY: 3 AN XY: 727122

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: 0.00000720

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

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

Dec 15, 2023

The c.458A>G (p.Y153C) alteration is located in exon 2 (coding exon 2) of the PDCD2 gene. This alteration results from a A to G substitution at nucleotide position 458, causing the tyrosine (Y) at amino acid position 153 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	0.067
BayesDel_addAF	Benign	-0.35	T
BayesDel_noAF	Benign	-0.57
Cadd	Benign	14
Dann	Uncertain	0.98
DEOGEN2	Benign	0.20	T;.;.;.;.;T;.
Eigen	Benign	-0.32
Eigen_PC	Benign	-0.48
FATHMM_MKL	Benign	0.34	N
LIST_S2	Benign	0.70	T;T;T;T;T;T;T
M_CAP	Benign	0.0037	T
MetaRNN	Benign	0.29	T;T;T;T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.1	L;.;.;L;.;.;.
MutationTaster	Benign	1.0	N;N;N;N;N;N
PrimateAI	Benign	0.45	T
PROVEAN	Uncertain	-2.6	D;N;D;N;D;.;D
REVEL	Benign	0.11
Sift	Benign	0.16	T;T;T;T;T;.;T
Sift4G	Benign	0.16	T;T;T;T;T;T;T
Polyphen		0.84	P;.;P;.;.;.;.
Vest4		0.34
MutPred		0.57		Loss of sheet (P = 0.0228);.;Loss of sheet (P = 0.0228);Loss of sheet (P = 0.0228);.;Loss of sheet (P = 0.0228);.;
MVP		0.19
MPC		0.35
ClinPred		0.47	T
GERP RS		-1.9
Varity_R		0.096
gMVP		0.35

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs748435640; hg19: chr6-170892661;