Genetic Variant PRSS58:p.Pro91Thr (chr7-142255220-G-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001001317.5(PRSS58):c.271C>A(p.Pro91Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,656 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P91S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

PRSS58
NM_001001317.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.13

Publications

0 publications found

Variant links:

Genes affected

PRSS58 (HGNC:39125): (serine protease 58) This gene encodes a member of the trypsin family of serine proteases. This gene and several related trypsinogen genes are localized to the T cell receptor beta locus on chromosome 7. This gene was previously described as a trypsinogen-like pseudogene, but it is now thought to be a protein-coding gene. [provided by RefSeq, Jul 2008]

PRSS58 links:

ENSG00000241881 (HGNC:):

ENSG00000241881 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRSS58	NM_001001317.5 link	c.271C>A	p.Pro91Thr	missense_variant	Exon 4 of 6	ENST00000547058.6	NP_001001317.1	Q8IYP2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
PRSS58	ENST00000547058.6 link	c.271C>A	p.Pro91Thr	missense_variant	Exon 4 of 6	1	NM_001001317.5	ENSP00000447588.2	Q8IYP2
PRSS58	ENST00000552471.1 link	c.271C>A	p.Pro91Thr	missense_variant	Exon 3 of 5	2		ENSP00000446916.1	Q8IYP2
ENSG00000241881	ENST00000486508.2 link	n.254+6437G>T		intron_variant	Intron 1 of 2	3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461656

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727164

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33468

American (AMR)

AF:

0.00

AC:

AN:

44714

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.00

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53408

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111824

Other (OTH)

AF:

0.00

AC:

AN:

60388

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.325

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.34

BayesDel_addAF

Pathogenic

0.22

BayesDel_noAF

Uncertain

0.070

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.74

D;D

Eigen

Uncertain

0.61

Eigen_PC

Uncertain

0.45

FATHMM_MKL

Uncertain

0.80

M_CAP

Benign

0.064

MetaRNN

Uncertain

0.71

D;D

MetaSVM

Uncertain

0.76

MutationAssessor

Pathogenic

3.9

H;H

PhyloP100

2.1

PrimateAI

Uncertain

0.49

PROVEAN

Pathogenic

-6.9

D;D

REVEL

Uncertain

0.52

Sift

Uncertain

0.0010

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;D

Vest4

0.41

MutPred

0.64

Gain of ubiquitination at K86 (P = 0.1446);Gain of ubiquitination at K86 (P = 0.1446);

MVP

0.85

MPC

0.24

ClinPred

0.98

GERP RS

4.9

Varity_R

0.38

gMVP

0.52

Mutation Taster

=63/37

polymorphism

(source)

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

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7-142255220-G-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over