chr11-61204153-C-T

Variant names:

• chr11-61204153-C-T
• rs1299591409
• NM_001079807.4:c.103C>T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_001079807.4(PGA3):​c.103C>T​(p.Arg35Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 16)
  • Exomes 𝑓: 0.0000032 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: PGA3 NM_001079807.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -1.71

Genes affected

PGA3 (HGNC:8885): (pepsinogen A3) This gene encodes a protein precursor of the digestive enzyme pepsin, a member of the peptidase A1 family of endopeptidases. The encoded precursor is secreted by gastric chief cells and undergoes autocatalytic cleavage in acidic conditions to form the active enzyme, which functions in the digestion of dietary proteins. This gene is found in a cluster of related genes on chromosome 11, each of which encodes one of multiple pepsinogens. Pepsinogen levels in serum may serve as a biomarker for atrophic gastritis and gastric cancer. [provided by RefSeq, Jul 2015]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.1646272).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PGA3	NM_001079807.4	c.103C>T	p.Arg35Cys	missense_variant	Exon 2 of 9	ENST00000325558.11	NP_001073275.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PGA3	ENST00000325558.11	c.103C>T	p.Arg35Cys	missense_variant	Exon 2 of 9	1	NM_001079807.4	ENSP00000322192.6
PGA3	ENST00000535551.1	n.847C>T		non_coding_transcript_exon_variant	Exon 1 of 3	3
PGA3	ENST00000537954.5	n.153C>T		non_coding_transcript_exon_variant	Exon 2 of 2	2
PGA3	ENST00000539649.1	n.153C>T		non_coding_transcript_exon_variant	Exon 2 of 3	2

Frequencies

GnomAD3 genomes Cov.: 16

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.00000316 AC: 4 AN: 1267736 Hom.: 0 Cov.: 26 AF XY: 0.00000157 AC XY: 1 AN XY: 635080

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: 0.0000122

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000317

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 16

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Jun 09, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.103C>T (p.R35C) alteration is located in exon 2 (coding exon 2) of the PGA3 gene. This alteration results from a C to T substitution at nucleotide position 103, causing the arginine (R) at amino acid position 35 to be replaced by a cysteine (C). 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	-0.31	T
BayesDel_noAF	Benign	-0.68
CADD	Benign	7.1
DANN	Benign	0.88
DEOGEN2	Benign	0.13	T
Eigen	Benign	-1.3
Eigen_PC	Benign	-1.5
FATHMM_MKL	Benign	0.071	N
LIST_S2	Benign	0.098	T
M_CAP	Benign	0.013	T
MetaRNN	Benign	0.16	T
MetaSVM	Benign	-0.84	T
MutationAssessor	Benign	1.9	L
PrimateAI	Benign	0.27	T
PROVEAN	Uncertain	-3.7	D
REVEL	Benign	0.12
Sift	Uncertain	0.0010	D
Sift4G	Pathogenic	0.0010	D
Vest4		0.14
MutPred		0.53		Loss of disorder (P = 0.0098);
MVP		0.043
MPC		2.9
ClinPred		0.82	D
GERP RS		-7.3
Varity_R		0.20
gMVP		0.12

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

Other links and lift over

dbSNP: rs1299591409; hg19: chr11-60971625; COSMIC: COSV100337347; COSMIC: COSV100337347;