17-5386213-T-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_002532.6(NUP88):c.2219A>T(p.Asn740Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,792 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 11/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

NUP88
NM_002532.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.12

Variant links:

Genes affected

NUP88 (HGNC:8067): (nucleoporin 88) The nuclear pore complex is a massive structure that extends across the nuclear envelope, forming a gateway that regulates the flow of macromolecules between the nucleus and the cytoplasm. Nucleoporins, a family of 50 to 100 proteins, are the main components of the nuclear pore complex in eukaryotic cells. The protein encoded by this gene belongs to the nucleoporin family and is associated with the oncogenic nucleoporin CAN/Nup214 in a dynamic subcomplex. This protein is also overexpressed in a large number of malignant neoplasms and precancerous dysplasias. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Mar 2016]

NUP88 links:

RABEP1 (HGNC:17677): (rabaptin, RAB GTPase binding effector protein 1) Enables protein domain specific binding activity and protein homodimerization activity. Involved in vesicle-mediated transport. Located in endocytic vesicle and endosome. Part of protein-containing complex. [provided by Alliance of Genome Resources, Apr 2022]

RABEP1 links:

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ACMG classification

Classification made for transcript

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=0.33295268).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NUP88	NM_002532.6 linkuse as main transcript	c.2219A>T	p.Asn740Ile	missense_variant	17/17	ENST00000573584.6
RABEP1	NM_004703.6 linkuse as main transcript	c.*2990T>A		3_prime_UTR_variant	18/18	ENST00000537505.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NUP88	ENST00000573584.6 linkuse as main transcript	c.2219A>T	p.Asn740Ile	missense_variant	17/17	1	NM_002532.6	P1
RABEP1	ENST00000537505.6 linkuse as main transcript	c.*2990T>A		3_prime_UTR_variant	18/18	1	NM_004703.6	P1	Q15276-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000399

AC:

AN:

250642

Hom.:

AF XY:

0.00000738

AC XY:

AN XY:

135526

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:

0.0000329

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460792

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726760

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000824

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 18, 2023

The c.2219A>T (p.N740I) alteration is located in exon 17 (coding exon 17) of the NUP88 gene. This alteration results from a A to T substitution at nucleotide position 2219, causing the asparagine (N) at amino acid position 740 to be replaced by an isoleucine (I). 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

0.20

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.43

Cadd

Benign

Dann

Uncertain

0.98

DEOGEN2

Benign

0.20

Eigen

Benign

-0.15

Eigen_PC

Benign

-0.14

FATHMM_MKL

Uncertain

0.91

LIST_S2

Benign

0.79

M_CAP

Benign

0.025

MetaRNN

Benign

0.33

MetaSVM

Benign

-0.83

MutationAssessor

Benign

2.0

MutationTaster

Benign

0.73

PrimateAI

Uncertain

0.58

Sift4G

Uncertain

0.0060

Polyphen

0.46

Vest4

0.52

MutPred

0.49

Loss of disorder (P = 0.0294);

MVP

0.55

MPC

0.29

ClinPred

0.76

GERP RS

1.4

Varity_R

0.29

gMVP

0.37

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

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