7-142752957-A-T

Variant names:

• chr7-142752957-A-T
• NM_002769.5:c.681A>T
• PRSS1 p.Gly227Gly

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_002769.5(PRSS1):​c.681A>T​(p.Gly227Gly) variant causes a synonymous 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. G227G) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 28)
• Consequence: PRSS1 NM_002769.5 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -5.49
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• hereditary chronic pancreatitis

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Illumina, ClinGen, Labcorp Genetics (formerly Invitae), Orphanet
• malignant pancreatic neoplasm

  Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp

TRB (HGNC:12155):

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.72).
• BP7: Synonymous conserved (PhyloP=-5.49 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002769.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PRSS1	NM_002769.5	MANE Select	c.681A>T	p.Gly227Gly	synonymous	Exon 5 of 5	NP_002760.1	P07477
	PRSS1	NR_172947.1		n.623A>T		non_coding_transcript_exon	Exon 5 of 5
	PRSS1	NR_172948.1		n.620A>T		non_coding_transcript_exon	Exon 5 of 5

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PRSS1	ENST00000311737.12	TSL:1 MANE Select	c.681A>T	p.Gly227Gly	synonymous	Exon 5 of 5	ENSP00000308720.7	P07477
	PRSS1	ENST00000486171.5	TSL:5	c.723A>T	p.Gly241Gly	synonymous	Exon 6 of 6	ENSP00000417854.1	E7EQ64
	PRSS1	ENST00000492062.2	TSL:2	c.*85A>T		3_prime_UTR	Exon 5 of 5	ENSP00000419912.2	H0Y8D1

Frequencies

GnomAD3 genomes Cov.: 28

GnomAD2 exomes AF: 0.00 AC: 0 AN: 251480 AF XY: 0.00

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 FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 50

GnomAD4 genome Cov.: 28

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.72
CADD	Benign	4.0
DANN	Benign	0.55
PhyloP100		-5.5

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr7-142460808;