3-53287601-G-T

Variant summary

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

The NM_018403.7(DCP1A):c.1728C>A(p.Asn576Lys) 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. 10/15 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 29)
• Consequence: DCP1A NM_018403.7 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.26

Genes affected

DCP1A (HGNC:18714): (decapping mRNA 1A) Decapping is a key step in general and regulated mRNA decay. The protein encoded by this gene is a decapping enzyme. This protein and another decapping enzyme form a decapping complex, which interacts with the nonsense-mediated decay factor hUpf1 and may be recruited to mRNAs containing premature termination codons. This protein also participates in the TGF-beta signaling pathway. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Feb 2014]

LOC107986087 (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=0.22395608).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DCP1A	NM_018403.7	c.1728C>A	p.Asn576Lys	missense_variant	10/10	ENST00000610213.6
LOC107986087	XR_001740702.3	n.208-5298G>T		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DCP1A	ENST00000610213.6	c.1728C>A	p.Asn576Lys	missense_variant	10/10	1	NM_018403.7	P1
DCP1A	ENST00000294241.10	c.1614C>A	p.Asn538Lys	missense_variant	9/9	2
DCP1A	ENST00000558034.1	n.357C>A		non_coding_transcript_exon_variant	2/2	2

Frequencies

GnomAD3 genomes Cov.: 29

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 29

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 27, 2023

The c.1728C>A (p.N576K) alteration is located in exon 10 (coding exon 10) of the DCP1A gene. This alteration results from a C to A substitution at nucleotide position 1728, causing the asparagine (N) at amino acid position 576 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	-0.017	T
BayesDel_noAF	Benign	-0.26
Cadd	Benign	19
Dann	Benign	0.79
DEOGEN2	Benign	0.033	T;.
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Benign	0.76	T;T
M_CAP	Benign	0.080	D
MetaRNN	Benign	0.22	T;T
MutationAssessor	Benign	1.9	M;.
PrimateAI	Uncertain	0.60	T
Sift4G	Uncertain	0.040	D;D
Polyphen		0.19	B;.
Vest4		0.40
MVP		0.52
GERP RS		2.8
Varity_R		0.19
gMVP		0.26

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

LitVar

Other links and lift over

dbSNP: rs78996616; hg19: chr3-53321619;