rs1057521927

Variant names:

• chr1-151017860-G-A
• rs1057521927
• NM_021222.3:c.88G>A

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PM2 PP3_Moderate PP5_Very_Strong

The NM_021222.3(PRUNE1):​c.88G>A​(p.Asp30Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: PRUNE1 NM_021222.3 missense
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:4
• Conservation: PhyloP100: 8.51
• Publications: 8 publications found

Genes affected

PRUNE1 (HGNC:13420): (prune exopolyphosphatase 1) This gene encodes a member of the DHH protein superfamily of phosphoesterases. This protein has been found to function as both a nucleotide phosphodiesterase and an exopolyphosphatase. This protein is believed to stimulate cancer progression and metastases through the induction of cell motility. A pseuodgene has been identified on chromosome 13. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2014]

PRUNE1 Gene-Disease associations (from GenCC):

• neurodevelopmental disorder with microcephaly, hypotonia, and variable brain anomalies

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics

ACMG classification

Our verdict: Pathogenic. The variant received 12 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.939
• PP5: Variant 1-151017860-G-A is Pathogenic according to our data. Variant chr1-151017860-G-A is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 384334.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRUNE1	NM_021222.3	c.88G>A	p.Asp30Asn	missense_variant	Exon 2 of 8	ENST00000271620.8	NP_067045.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PRUNE1	ENST00000271620.8	c.88G>A	p.Asp30Asn	missense_variant	Exon 2 of 8	1	NM_021222.3	ENSP00000271620.3

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 31

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Neurodevelopmental disorder with microcephaly, hypotonia, and variable brain anomalies Pathogenic:2

Sep 19, 2017

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

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CENTOGENE GmbH and LLC - Guiding Precision Medicine

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Abnormal brain morphology Pathogenic:1

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Lupski Lab, Baylor-Hopkins CMG, Baylor College of Medicine

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: research

There are 3 more families with similar phenotype -

not provided Pathogenic:1

Oct 13, 2020

GeneDx

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Published functional studies demonstrate a damaging effect with impaired microtubule polymerization, cell migration, and cell proliferation properties (Zollo et al., 2017); Not observed in large population cohorts (Lek et al., 2016); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 26539891, 28334956) -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Benign	-0.029	T
BayesDel_noAF	Benign	-0.28
CADD	Pathogenic	31
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.73	.;D
Eigen	Pathogenic	0.91
Eigen_PC	Pathogenic	0.81
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.97	D;D
M_CAP	Benign	0.037	D
MetaRNN	Pathogenic	0.94	D;D
MetaSVM	Benign	-0.77	T
PhyloP100		8.5
PrimateAI	Uncertain	0.72	T
PROVEAN	Pathogenic	-4.4	.;D
REVEL	Uncertain	0.56
Sift	Pathogenic	0.0	.;D
Sift4G	Pathogenic	0.0	.;D
Polyphen		1.0	.;D
Vest4		0.98
MutPred		0.91		Loss of stability (P = 0.117);Loss of stability (P = 0.117);
MVP		0.58
MPC		0.71
ClinPred		1.0	D
GERP RS		4.8
Varity_R		0.82
gMVP		0.79
Mutation Taster		=156/144	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs1057521927; hg19: chr1-150990336; COSMIC: COSV54958239; COSMIC: COSV54958239;