5-102926666-G-C

Variant summary

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

The NM_001177306.2(PAM):c.524G>C(p.Arg175Thr) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PAM NM_001177306.2 missense, splice_region
• Scores: Splicing: ADA: 0.01056
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.48

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]

ACMG classification

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/exons	MANE	UniProt
PAM	NM_001177306.2	c.524G>C	p.Arg175Thr	missense_variant, splice_region_variant	7/26	ENST00000438793.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PAM	ENST00000438793.8	c.524G>C	p.Arg175Thr	missense_variant, splice_region_variant	7/26	1	NM_001177306.2	P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 22

GnomAD4 genome Cov.: 32

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

Jul 27, 2021

The c.524G>C (p.R175T) alteration is located in exon 6 (coding exon 6) of the PAM gene. This alteration results from a G to C substitution at nucleotide position 524, causing the arginine (R) at amino acid position 175 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	0.26
BayesDel_addAF	Uncertain	0.079	D
BayesDel_noAF	Benign	-0.12
Cadd	Uncertain	24
Dann	Uncertain	0.98
DEOGEN2	Benign	0.41	T;.;.;.;.
Eigen	Benign	0.0085
Eigen_PC	Uncertain	0.23
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Pathogenic	0.97	D;D;D;D;D
M_CAP	Benign	0.010	T
MetaRNN	Uncertain	0.45	T;T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.63	N;N;N;N;N
MutationTaster	Benign	1.0	D;D;D;D;D;D;N
PrimateAI	Uncertain	0.67	T
PROVEAN	Uncertain	-2.4	N;N;N;N;N
REVEL	Benign	0.18
Sift	Uncertain	0.027	D;D;T;D;D
Sift4G	Benign	0.16	T;T;T;T;T
Polyphen		0.051	B;B;B;B;B
Vest4		0.67
MutPred		0.64		Gain of ubiquitination at K179 (P = 0.0657);Gain of ubiquitination at K179 (P = 0.0657);Gain of ubiquitination at K179 (P = 0.0657);Gain of ubiquitination at K179 (P = 0.0657);Gain of ubiquitination at K179 (P = 0.0657);
MVP		0.50
MPC		0.75
ClinPred		0.73	D
GERP RS		6.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.087
gMVP		0.79

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.011
dbscSNV1_RF	Benign	0.044
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: chr5-102262370;