5-102950813-C-T

Position:

• chr5-102950813-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001177306.2(PAM):​c.898C>T​(p.His300Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PAM NM_001177306.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.32

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 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.10435712).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PAM	NM_001177306.2	c.898C>T	p.His300Tyr	missense_variant	12/26	ENST00000438793.8	NP_001170777.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PAM	ENST00000438793.8	c.898C>T	p.His300Tyr	missense_variant	12/26	1	NM_001177306.2	ENSP00000396493	P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 25

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

Mar 26, 2024

The c.898C>T (p.H300Y) alteration is located in exon 11 (coding exon 11) of the PAM gene. This alteration results from a C to T substitution at nucleotide position 898, causing the histidine (H) at amino acid position 300 to be replaced by a tyrosine (Y). 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	-0.15	T
BayesDel_noAF	Benign	-0.45
CADD	Benign	20
DANN	Benign	0.95
DEOGEN2	Benign	0.15	T;.;.;.;.
Eigen	Benign	0.038
Eigen_PC	Benign	0.18
FATHMM_MKL	Benign	0.68	D
LIST_S2	Uncertain	0.89	D;D;D;D;D
M_CAP	Benign	0.017	T
MetaRNN	Benign	0.10	T;T;T;T;T
MetaSVM	Benign	-0.80	T
MutationAssessor	Benign	-1.2	N;N;N;N;N
MutationTaster	Benign	1.0	D;N;N;N;N;N;N
PrimateAI	Uncertain	0.66	T
PROVEAN	Benign	-0.12	N;N;N;N;N
REVEL	Benign	0.074
Sift	Benign	0.59	T;T;T;T;T
Sift4G	Benign	0.98	T;T;T;T;T
Polyphen		0.0010	B;B;B;B;B
Vest4		0.31
MutPred		0.65		Gain of sheet (P = 0.039);Gain of sheet (P = 0.039);Gain of sheet (P = 0.039);Gain of sheet (P = 0.039);Gain of sheet (P = 0.039);
MVP		0.56
MPC		0.29
ClinPred		0.30	T
GERP RS		5.5
Varity_R		0.042
gMVP		0.71

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr5-102286517;