19-49908363-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_016553.5(NUP62):c.1445T>A(p.Met482Lys) variant causes a missense change. 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 Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M482L) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: NUP62 NM_016553.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.02

Genes affected

NUP62 (HGNC:8066): (nucleoporin 62) 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 are the main components of the nuclear pore complex in eukaryotic cells. The protein encoded by this gene is a member of the FG-repeat containing nucleoporins and is localized to the nuclear pore central plug. This protein associates with the importin alpha/beta complex which is involved in the import of proteins containing nuclear localization signals. Multiple transcript variants of this gene encode a single protein isoform. [provided by RefSeq, Jul 2008]

IL4I1 (HGNC:19094): (interleukin 4 induced 1) This gene encodes a secreted L-amino acid oxidase protein which primarily catabolizes L-phenylalanine and, to a lesser extent, L-arginine. The expression of this gene is induced by the cytokine interleukin 4 in B cells. This gene is also expressed in macrophages and dendritic cells. This protein may play a role immune system escape as it is expressed in tumor-associated macrophages and suppresses T-cell responses. This protein also contains domains thought to be involved in the binding of flavin adenine dinucleotide (FAD) cofactor. Multiple transcript variants encoding different isoforms have been found for this gene. Some transcripts of this gene share a promoter and exons of the 5' UTR with the overlapping NUP62 gene. [provided by RefSeq, Jul 2020]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.903

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NUP62	NM_016553.5	c.1445T>A	p.Met482Lys	missense_variant	3/3	ENST00000352066.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NUP62	ENST00000352066.8	c.1445T>A	p.Met482Lys	missense_variant	3/3	1	NM_016553.5	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

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

May 11, 2022

The c.1445T>A (p.M482K) alteration is located in exon 3 (coding exon 1) of the NUP62 gene. This alteration results from a T to A substitution at nucleotide position 1445, causing the methionine (M) at amino acid position 482 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	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.30	D
BayesDel_noAF	Pathogenic	0.20
Cadd	Uncertain	25
Dann	Uncertain	0.98
DEOGEN2	Uncertain	0.58	D;D;D;.;D
Eigen	Uncertain	0.37
Eigen_PC	Uncertain	0.36
FATHMM_MKL	Uncertain	0.96	D
M_CAP	Benign	0.080	D
MetaRNN	Pathogenic	0.90	D;D;D;D;D
MetaSVM	Benign	-0.95	T
MutationAssessor	Pathogenic	3.2	M;M;M;.;M
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.77	T
PROVEAN	Pathogenic	-4.8	D;D;.;.;.
REVEL	Uncertain	0.41
Sift	Uncertain	0.0010	D;D;.;.;.
Sift4G	Uncertain	0.0060	D;D;D;D;D
Polyphen		0.73	P;P;P;.;P
Vest4		0.89
MutPred		0.76		Gain of ubiquitination at M482 (P = 0.0428);Gain of ubiquitination at M482 (P = 0.0428);Gain of ubiquitination at M482 (P = 0.0428);.;Gain of ubiquitination at M482 (P = 0.0428);
MVP		0.72
MPC		0.70
ClinPred		1.0	D
GERP RS		2.8
Varity_R		0.80
gMVP		0.92

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-50411620;