Genetic Variant METAP1:p.Leu122Phe (chr4-99039397-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_015143.3(METAP1):c.364C>T(p.Leu122Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000559 in 1,610,542 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

METAP1
NM_015143.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.21

Variant links:

Genes affected

METAP1 (HGNC:15789): (methionyl aminopeptidase 1) Predicted to enable aminopeptidase activity and metalloexopeptidase activity. Involved in platelet aggregation. Predicted to be located in cytosol. [provided by Alliance of Genome Resources, Apr 2022]

METAP1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

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=0.1311135).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
METAP1	NM_015143.3 link	c.364C>T	p.Leu122Phe	missense_variant	Exon 5 of 11	ENST00000296411.11	NP_055958.2	P53582

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
METAP1	ENST00000296411.11 link	c.364C>T	p.Leu122Phe	missense_variant	Exon 5 of 11	1	NM_015143.3	ENSP00000296411.6		P53582

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

152000

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:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000480

AC:

AN:

1458542

Hom.:

Cov.:

AF XY:

0.00000689

AC XY:

AN XY:

725642

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000631

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000132

AC:

AN:

152000

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74218

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:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000565

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.00000828

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 13, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.364C>T (p.L122F) alteration is located in exon 5 (coding exon 5) of the METAP1 gene. This alteration results from a C to T substitution at nucleotide position 364, causing the leucine (L) at amino acid position 122 to be replaced by a phenylalanine (F). 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

0.25

BayesDel_addAF

Benign

-0.029

BayesDel_noAF

Benign

-0.28

CADD

Benign

DANN

Benign

0.92

DEOGEN2

Benign

0.11

Eigen

Benign

-0.080

Eigen_PC

Benign

0.087

FATHMM_MKL

Benign

0.69

LIST_S2

Uncertain

0.95

M_CAP

Benign

0.0050

MetaRNN

Benign

0.13

MetaSVM

Benign

-0.97

MutationAssessor

Benign

1.4

PrimateAI

Uncertain

0.78

PROVEAN

Benign

-1.4

REVEL

Benign

0.095

Sift

Benign

0.72

Sift4G

Benign

0.73

Polyphen

0.0

Vest4

0.38

MutPred

0.28

Gain of methylation at K123 (P = 0.0298);

MVP

0.65

MPC

0.43

ClinPred

0.38

GERP RS

4.9

Varity_R

0.16

gMVP

0.54

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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