20-2836283-A-T

Position:

• chr20-2836283-A-T

Variant summary

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

The NM_022760.6(PCED1A):​c.873T>A​(p.Asn291Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/21 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)
• Consequence: PCED1A NM_022760.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.323

Genes affected

PCED1A (HGNC:16212): (PC-esterase domain containing 1A) The protein encoded by this gene is a member of the GDSL/SGNH superfamily. Members of this family are hydrolytic enzymes with esterase and lipase activity and broad substrate specificity. This protein belongs to the Pmr5-Cas1p-esterase subfamily in that it contains the catalytic triad comprised of serine, aspartate and histidine and lacks two conserved regions (glycine after strand S2 and GxND motif). A pseudogene of this gene has been identified on the long arm of chromosome 2. Alternative splicing results in multiple transcript variants that encode different protein isoforms. [provided by RefSeq, Sep 2012]

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=0.0877797).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PCED1A	NM_022760.6	c.873T>A	p.Asn291Lys	missense_variant	7/8	ENST00000360652.7	NP_073597.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PCED1A	ENST00000360652.7	c.873T>A	p.Asn291Lys	missense_variant	7/8	1	NM_022760.6	ENSP00000353868	P1
PCED1A	ENST00000356872.7	c.720T>A	p.Asn240Lys	missense_variant	7/8	2		ENSP00000349334
PCED1A	ENST00000474714.5	c.136-574T>A		intron_variant		3		ENSP00000474824
PCED1A	ENST00000487501.2	n.245-173T>A		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 35

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

Feb 17, 2024

The c.873T>A (p.N291K) alteration is located in exon 7 (coding exon 6) of the PCED1A gene. This alteration results from a T to A substitution at nucleotide position 873, causing the asparagine (N) at amino acid position 291 to be replaced by a lysine (K). 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	0.11
BayesDel_addAF	Benign	-0.31	T
BayesDel_noAF	Benign	-0.69
CADD	Benign	9.8
DANN	Benign	0.86
DEOGEN2	Benign	0.0087	T;.
Eigen	Benign	-0.83
Eigen_PC	Benign	-0.69
FATHMM_MKL	Benign	0.26	N
LIST_S2	Benign	0.68	T;T
M_CAP	Benign	0.0061	T
MetaRNN	Benign	0.088	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.34	N;.
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.31	T
PROVEAN	Benign	-0.030	N;N
REVEL	Benign	0.060
Sift	Benign	0.23	T;T
Sift4G	Benign	0.90	T;T
Polyphen		0.0070	B;B
Vest4		0.16
MutPred		0.64		Gain of ubiquitination at N291 (P = 0.0121);.;
MVP		0.12
MPC		0.47
ClinPred		0.049	T
GERP RS		0.059
Varity_R		0.037
gMVP		0.13

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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: chr20-2816929;