dbSNP rs767897913: NPM1:p.Asp173del (chr5-171392964-GGAT-G) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_002520.7(NPM1):c.519_521delTGA(p.Asp173del) variant causes a disruptive inframe deletion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000864 in 1,609,368 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000072 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000088 ( 1 hom. )

Consequence

NPM1
NM_002520.7 disruptive_inframe_deletion

Scores

Not classified

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.00

Variant links:

Genes affected

NPM1 (HGNC:7910): (nucleophosmin 1) The protein encoded by this gene is involved in several cellular processes, including centrosome duplication, protein chaperoning, and cell proliferation. The encoded phosphoprotein shuttles between the nucleolus, nucleus, and cytoplasm, chaperoning ribosomal proteins and core histones from the nucleus to the cytoplasm. This protein is also known to sequester the tumor suppressor ARF in the nucleolus, protecting it from degradation until it is needed. Mutations in this gene are associated with acute myeloid leukemia. Dozens of pseudogenes of this gene have been identified. [provided by RefSeq, Aug 2017]

NPM1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAd4 at 11 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NPM1	NM_002520.7 link	c.519_521delTGA	p.Asp173del	disruptive_inframe_deletion	Exon 6 of 11	ENST00000296930.10	NP_002511.1	P06748-1A0A0S2Z491

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NPM1	ENST00000296930.10 link	c.519_521delTGA	p.Asp173del	disruptive_inframe_deletion	Exon 6 of 11	1	NM_002520.7	ENSP00000296930.5		P06748-1

Frequencies

GnomAD3 genomes

AF:

0.0000723

AC:

AN:

152090

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00104

Gnomad FIN

AF:

0.000189

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000137

AC:

AN:

248270

Hom.:

AF XY:

0.000186

AC XY:

AN XY:

134460

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000720

Gnomad FIN exome

AF:

0.000324

Gnomad NFE exome

AF:

0.0000360

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.0000878

AC:

128

AN:

1457160

Hom.:

AF XY:

0.000106

AC XY:

AN XY:

725152

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.000988

Gnomad4 FIN exome

AF:

0.000169

Gnomad4 NFE exome

AF:

0.0000244

Gnomad4 OTH exome

AF:

0.0000830

GnomAD4 genome

AF:

0.0000723

AC:

AN:

152208

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74422

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00104

Gnomad4 FIN

AF:

0.000189

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000434

Hom.:

Bravo

AF:

0.0000340

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

NPM1-related disorder

Uncertain:1

Oct 05, 2022

PreventionGenetics, part of Exact Sciences

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The NPM1 c.519_521delTGA variant is predicted to result in an in-frame deletion (p.Asp173del). To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.072% of alleles in individuals of South Asian descent in gnomAD (http://gnomad.broadinstitute.org/variant/5-170819968-GGAT-G). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over