chr16-2785471-C-A

Variant names:

• chr16-2785471-C-A
• rs916213722
• NM_152891.3:c.418G>T

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_152891.3(PRSS33):​c.418G>T​(p.Ala140Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000594 in 1,514,596 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0000059 (0 hom.)
• Consequence: PRSS33 NM_152891.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -2.46
• Publications: 0 publications found

Genes affected

PRSS33 (HGNC:30405): (serine protease 33) Enables serine-type endopeptidase activity. Involved in protein kinase C signaling and proteolysis. Located in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.030834317).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRSS33	NM_152891.3	c.418G>T	p.Ala140Ser	missense_variant	Exon 5 of 7	ENST00000682474.1	NP_690851.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PRSS33	ENST00000682474.1	c.418G>T	p.Ala140Ser	missense_variant	Exon 5 of 7		NM_152891.3	ENSP00000507560.1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152142 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000587 AC: 8 AN: 1362454 Hom.: 0 Cov.: 33 AF XY: 0.00000595 AC XY: 4 AN XY: 672212

African (AFR) AF: 0.000243 AC: 7 AN: 28814

American (AMR) AF: 0.00 AC: 0 AN: 33378

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 23958

East Asian (EAS) AF: 0.00 AC: 0 AN: 33544

South Asian (SAS) AF: 0.00 AC: 0 AN: 76878

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 33400

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4004

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1071748

Other (OTH) AF: 0.0000176 AC: 1 AN: 56730

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152142 Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1 AN XY: 74318

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

African (AFR) AF: 0.0000241 AC: 1 AN: 41440

American (AMR) AF: 0.00 AC: 0 AN: 15286

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5194

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10620

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 314

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67982

Other (OTH) AF: 0.00 AC: 0 AN: 2088

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000189

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Sep 09, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.418G>T (p.A140S) alteration is located in exon 4 (coding exon 4) of the PRSS33 gene. This alteration results from a G to T substitution at nucleotide position 418, causing the alanine (A) at amino acid position 140 to be replaced by a serine (S). 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	0.079
BayesDel_addAF	Benign	-0.16	T
BayesDel_noAF	Benign	-0.47
CADD	Benign	0.025
DANN	Benign	0.55
DEOGEN2	Benign	0.064	T;T;T
Eigen	Benign	-1.7
Eigen_PC	Benign	-1.7
FATHMM_MKL	Benign	0.094	N
LIST_S2	Benign	0.11	.;T;T
M_CAP	Uncertain	0.13	D
MetaRNN	Benign	0.031	T;T;T
MetaSVM	Benign	-0.95	T
MutationAssessor	Benign	-0.54	N;N;.
PhyloP100		-2.5
PrimateAI	Uncertain	0.66	T
PROVEAN	Benign	0.70	N;.;.
REVEL	Benign	0.14
Sift	Benign	0.80	T;.;.
Sift4G	Benign	0.68	T;T;.
Polyphen		0.0080	B;B;.
Vest4		0.056
MutPred		0.23		Gain of phosphorylation at A140 (P = 0.0502);Gain of phosphorylation at A140 (P = 0.0502);.;
MVP		0.14
MPC		0.34
ClinPred		0.046	T
GERP RS		-3.3
Varity_R		0.049
gMVP		0.33
Mutation Taster		=97/3	polymorphism

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

Other links and lift over

dbSNP: rs916213722; hg19: chr16-2835472;