Genetic Variant PAM:p.Met355Thr (chr5-102960033-T-C) – 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_001177306.2(PAM):c.1064T>C(p.Met355Thr) variant causes a missense change. The variant allele was found at a frequency of 0.0000249 in 1,603,850 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

PAM
NM_001177306.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.37

Variant links:

Genes affected

PAM (HGNC:8596): (peptidylglycine alpha-amidating monooxygenase) This gene encodes a multifunctional protein. The encoded preproprotein is proteolytically processed to generate the mature enzyme. This enzyme includes two domains with distinct catalytic activities, a peptidylglycine alpha-hydroxylating monooxygenase (PHM) domain and a peptidyl-alpha-hydroxyglycine alpha-amidating lyase (PAL) domain. These catalytic domains work sequentially to catalyze the conversion of neuroendocrine peptides to active alpha-amidated products. Alternative splicing results in multiple transcript variants, at least one of which encodes an isoform that is proteolytically processed. [provided by RefSeq, Jan 2016]

PAM links:

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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=0.07865098).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PAM	NM_001177306.2 link	c.1064T>C	p.Met355Thr	missense_variant	Exon 13 of 26	ENST00000438793.8	NP_001170777.1	P19021-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PAM	ENST00000438793.8 link	c.1064T>C	p.Met355Thr	missense_variant	Exon 13 of 26	1	NM_001177306.2	ENSP00000396493.3		P19021-1

Frequencies

GnomAD3 genomes

AF:

0.000112

AC:

AN:

152070

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00105

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000321

AC:

AN:

249052

Hom.:

AF XY:

0.0000372

AC XY:

AN XY:

134512

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000234

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000158

AC:

AN:

1451780

Hom.:

Cov.:

AF XY:

0.0000221

AC XY:

AN XY:

722680

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000158

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000136

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.000112

AC:

AN:

152070

Hom.:

Cov.:

AF XY:

0.000162

AC XY:

AN XY:

74280

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00105

Gnomad4 ASJ

AF:

0.00

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

Bravo

AF:

0.0000831

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 07, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1064T>C (p.M355T) alteration is located in exon 12 (coding exon 12) of the PAM gene. This alteration results from a T to C substitution at nucleotide position 1064, causing the methionine (M) at amino acid position 355 to be replaced by a threonine (T). 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

0.097

BayesDel_addAF

Benign

-0.34

BayesDel_noAF

Benign

-0.43

CADD

Benign

DANN

Benign

0.74

DEOGEN2

Benign

0.37

T;.;.;.;.

Eigen

Benign

-0.25

Eigen_PC

Benign

-0.074

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.79

T;T;T;T;T

M_CAP

Benign

0.019

MetaRNN

Benign

0.079

T;T;T;T;T

MetaSVM

Benign

-0.96

MutationAssessor

Benign

1.9

L;L;L;L;L

PrimateAI

Uncertain

0.59

PROVEAN

Benign

-2.1

N;N;N;N;N

REVEL

Benign

0.093

Sift

Benign

0.15

T;T;T;T;T

Sift4G

Benign

0.40

T;T;T;T;T

Polyphen

0.0

B;B;B;B;B

Vest4

0.26

MutPred

0.29

Gain of glycosylation at M355 (P = 0.0156);Gain of glycosylation at M355 (P = 0.0156);Gain of glycosylation at M355 (P = 0.0156);Gain of glycosylation at M355 (P = 0.0156);Gain of glycosylation at M355 (P = 0.0156);

MVP

0.39

MPC

0.40

ClinPred

0.15

GERP RS

4.4

Varity_R

0.22

gMVP

0.65

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