Variant 7-142749486-T-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PVS1PM2

The NM_002769.5(PRSS1):c.2T>A(p.Met1?) variant causes a start lost change. The variant allele was found at a frequency of 0.000000684 in 1,461,876 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

PRSS1
NM_002769.5 start_lost

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.77

Variant links:

Genes affected

PRSS1 (HGNC:9475): (serine protease 1) This gene encodes a trypsinogen, which is a member of the trypsin family of serine proteases. This enzyme is secreted by the pancreas and cleaved to its active form in the small intestine. It is active on peptide linkages involving the carboxyl group of lysine or arginine. Mutations in this gene are associated with hereditary pancreatitis. This gene and several other trypsinogen genes are localized to the T cell receptor beta locus on chromosome 7. [provided by RefSeq, Jul 2008]

PRSS1 links:

TRB (HGNC:12155):

TRB links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 10 ACMG points.

PVS1

Start lost variant, no new inframe start found.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PRSS1	NM_002769.5 link	c.2T>A	p.Met1?	start_lost	1/5	ENST00000311737.12	NP_002760.1	P07477

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
PRSS1	ENST00000311737.12 link	c.2T>A	p.Met1?	start_lost	1/5	1	NM_002769.5	ENSP00000308720.7	P07477
PRSS1	ENST00000486171.5 link	c.2T>A	p.Met1?	start_lost	1/6	5		ENSP00000417854.1	E7EQ64
PRSS1	ENST00000485223.1 link	n.15T>A		non_coding_transcript_exon_variant	1/2	2
PRSS1	ENST00000497041.1 link	n.6T>A		non_coding_transcript_exon_variant	1/2	2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461876

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727244

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:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Hereditary pancreatitis

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 11, 2024

The p.M1? variant (also known as c.2T>A) is located in coding exon 1 of the PRSS1 gene and results from a T to A substitution at nucleotide position 2. This alters the methionine residue at the initiation codon (ATG). This amino acid position is highly conserved in available vertebrate species. Sequence variations that modify the initiation codon are expected to result in either loss of translation initiation, N-terminal truncation, or cause a shift in the mRNA reading frame. However, loss of function of PRSS1 has not been established as a mechanism of disease. Based on the available evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.32

BayesDel_noAF

Pathogenic

0.22

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Uncertain

0.55

.;.;D

Eigen

Uncertain

0.19

Eigen_PC

Benign

0.030

FATHMM_MKL

Pathogenic

0.98

M_CAP

Pathogenic

0.77

MetaRNN

Pathogenic

0.99

D;D;D

MetaSVM

Uncertain

0.64

PROVEAN

Uncertain

-4.1

D;.;D

REVEL

Pathogenic

0.81

Sift

Pathogenic

0.0

D;.;D

Sift4G

Pathogenic

0.0

D;D;D

Polyphen

1.0

.;.;D

Vest4

0.92

MutPred

0.96

Gain of sheet (P = 0.0061);Gain of sheet (P = 0.0061);Gain of sheet (P = 0.0061);

MVP

0.93

ClinPred

1.0

GERP RS

3.3

Varity_R

0.75

gMVP

0.87

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over