Genetic Variant AP1M2:p.Pro374His (chr19-10574956-G-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_005498.5(AP1M2):c.1121C>A(p.Pro374His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000245 in 1,593,178 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000025 ( 0 hom. )

Consequence

AP1M2
NM_005498.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.81

Variant links:

Genes affected

AP1M2 (HGNC:558): (adaptor related protein complex 1 subunit mu 2) This gene encodes a subunit of the heterotetrameric adaptor-related protein comlex 1 (AP-1), which belongs to the adaptor complexes medium subunits family. This protein is capable of interacting with tyrosine-based sorting signals. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2014]

AP1M2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AP1M2	NM_005498.5 link	c.1121C>A	p.Pro374His	missense_variant	Exon 10 of 12	ENST00000250244.11	NP_005489.2	Q9Y6Q5-1
AP1M2	NM_001300887.2 link	c.1127C>A	p.Pro376His	missense_variant	Exon 10 of 12		NP_001287816.1	Q9Y6Q5-2Q53GI5
AP1M2	XM_047438018.1 link	c.1049C>A	p.Pro350His	missense_variant	Exon 10 of 12		XP_047293974.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AP1M2	ENST00000250244.11 link	c.1121C>A	p.Pro374His	missense_variant	Exon 10 of 12	1	NM_005498.5	ENSP00000250244.5		Q9Y6Q5-1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152030

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000656

Gnomad ASJ

AF:

0.000577

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000844

AC:

AN:

225044

Hom.:

AF XY:

0.0000735

AC XY:

AN XY:

122378

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000189

Gnomad ASJ exome

AF:

0.00101

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000361

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000996

Gnomad OTH exome

AF:

0.000371

GnomAD4 exome

AF:

0.0000250

AC:

AN:

1441148

Hom.:

Cov.:

AF XY:

0.0000266

AC XY:

AN XY:

714888

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000141

Gnomad4 ASJ exome

AF:

0.000675

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000358

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000454

Gnomad4 OTH exome

AF:

0.0000841

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152030

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74250

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000656

Gnomad4 ASJ

AF:

0.000577

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000879

Hom.:

Bravo

AF:

0.0000340

ExAC

AF:

0.0000497

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 25, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1121C>A (p.P374H) alteration is located in exon 10 (coding exon 10) of the AP1M2 gene. This alteration results from a C to A substitution at nucleotide position 1121, causing the proline (P) at amino acid position 374 to be replaced by a histidine (H). 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

0.31

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.14

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.21

.;.;T;T

Eigen

Pathogenic

0.88

Eigen_PC

Pathogenic

0.77

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.97

D;D;D;D

M_CAP

Uncertain

0.12

MetaRNN

Uncertain

0.69

D;D;D;D

MetaSVM

Benign

-0.36

MutationAssessor

Pathogenic

4.0

.;.;H;.

PrimateAI

Uncertain

0.78

PROVEAN

Uncertain

-4.3

.;.;D;.

REVEL

Uncertain

0.43

Sift

Uncertain

0.016

.;.;D;.

Sift4G

Uncertain

0.014

D;D;D;D

Polyphen

0.97, 1.0

.;D;D;.

Vest4

0.81

MutPred

0.69

.;.;Loss of catalytic residue at P374 (P = 0.0069);.;

MVP

0.64

MPC

0.69

ClinPred

0.98

GERP RS

4.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.40

gMVP

0.56

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

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