Genetic Variant PAM:p.Pro228Thr (chr5-102949575-C-A) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_001177306.2(PAM):c.682C>A(p.Pro228Thr) variant causes a missense change. The variant allele was found at a frequency of 0.000000714 in 1,399,668 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 7.1e-7 ( 0 hom. )

Consequence

PAM
NM_001177306.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.41

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 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.766

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PAM	NM_001177306.2 link	c.682C>A	p.Pro228Thr	missense_variant	Exon 10 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.682C>A	p.Pro228Thr	missense_variant	Exon 10 of 26	1	NM_001177306.2	ENSP00000396493.3		P19021-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000401

AC:

AN:

249516

Hom.:

AF XY:

0.00000741

AC XY:

AN XY:

134902

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000891

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

7.14e-7

AC:

AN:

1399668

Hom.:

Cov.:

AF XY:

0.00000143

AC XY:

AN XY:

699662

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:

9.47e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Alfa

AF:

0.000111

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 21, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.682C>A (p.P228T) alteration is located in exon 9 (coding exon 9) of the PAM gene. This alteration results from a C to A substitution at nucleotide position 682, causing the proline (P) at amino acid position 228 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

0.25

BayesDel_addAF

Uncertain

0.13

BayesDel_noAF

Uncertain

-0.050

CADD

Pathogenic

DANN

Benign

0.96

DEOGEN2

Uncertain

0.69

D;.;.;.;.

Eigen

Uncertain

0.43

Eigen_PC

Uncertain

0.54

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.92

D;D;D;D;D

M_CAP

Benign

0.028

MetaRNN

Pathogenic

0.77

D;D;D;D;D

MetaSVM

Benign

-0.75

MutationAssessor

Benign

1.1

L;L;L;L;L

PrimateAI

Uncertain

0.69

PROVEAN

Uncertain

-3.4

D;D;D;D;D

REVEL

Uncertain

0.33

Sift

Benign

0.075

T;T;T;T;T

Sift4G

Benign

0.22

T;T;T;T;T

Polyphen

0.94

P;P;P;P;P

Vest4

0.80

MutPred

0.57

Loss of methylation at K225 (P = 0.083);Loss of methylation at K225 (P = 0.083);Loss of methylation at K225 (P = 0.083);Loss of methylation at K225 (P = 0.083);Loss of methylation at K225 (P = 0.083);

MVP

0.73

MPC

0.69

ClinPred

0.91

GERP RS

6.0

Varity_R

0.37

gMVP

0.84

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