rs35523678

Variant summary

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

The NM_001379610.1(SPINK1):​c.200G>T​(p.Arg67Leu) 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 1,461,702 control chromosomes in the GnomAD database, with no homozygous occurrence. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R67H) has been classified as Benign.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

SPINK1
NM_001379610.1 missense

Scores

3
15

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0970

Publications

14 publications found
Variant links:
Genes affected
SPINK1 (HGNC:11244): (serine peptidase inhibitor Kazal type 1) The protein encoded by this gene is a trypsin inhibitor, which is secreted from pancreatic acinar cells into pancreatic juice. It is thought to function in the prevention of trypsin-catalyzed premature activation of zymogens within the pancreas and the pancreatic duct. Mutations in this gene are associated with hereditary pancreatitis and tropical calcific pancreatitis. [provided by RefSeq, Oct 2008]
SPINK1 Gene-Disease associations (from GenCC):
  • hereditary chronic pancreatitis
    Inheritance: AD, Unknown Classification: STRONG, SUPPORTIVE, NO_KNOWN Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), PanelApp Australia
  • tropical pancreatitis
    Inheritance: AD Classification: STRONG Submitted by: PanelApp Australia

Genome browser will be placed here

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
SPINK1NM_001379610.1 linkc.200G>T p.Arg67Leu missense_variant Exon 4 of 4 ENST00000296695.10 NP_001366539.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SPINK1ENST00000296695.10 linkc.200G>T p.Arg67Leu missense_variant Exon 4 of 4 1 NM_001379610.1 ENSP00000296695.5
SPINK1ENST00000505722.1 linkn.115G>T non_coding_transcript_exon_variant Exon 2 of 2 2

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD2 exomes
AF:
0.00000399
AC:
1
AN:
250356
AF XY:
0.00
show subpopulations
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:
0.00000885
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461702
Hom.:
0
Cov.:
31
AF XY:
0.00
AC XY:
0
AN XY:
727152
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33476
American (AMR)
AF:
0.00
AC:
0
AN:
44714
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26132
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39680
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86256
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53370
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5766
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1111928
Other (OTH)
AF:
0.0000166
AC:
1
AN:
60380
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.425
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
Cov.:
32
Alfa
AF:
0.00000312
Hom.:
21

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Hereditary pancreatitis Uncertain:1
Sep 22, 2023
Ambry Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The p.R67L variant (also known as c.200G>T), located in coding exon 4 of the SPINK1 gene, results from a G to T substitution at nucleotide position 200. The arginine at codon 67 is replaced by leucine, an amino acid with dissimilar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.21
BayesDel_addAF
Benign
-0.018
T
BayesDel_noAF
Benign
-0.26
CADD
Benign
13
DANN
Uncertain
0.99
DEOGEN2
Benign
0.28
T
Eigen
Benign
-0.21
Eigen_PC
Benign
-0.37
FATHMM_MKL
Benign
0.092
N
LIST_S2
Benign
0.46
T
M_CAP
Benign
0.057
D
MetaRNN
Uncertain
0.46
T
MetaSVM
Benign
-0.70
T
PhyloP100
0.097
PrimateAI
Benign
0.35
T
PROVEAN
Uncertain
-3.9
D
REVEL
Benign
0.29
Sift
Benign
0.32
T
Sift4G
Benign
0.29
T
Polyphen
0.96
D
Vest4
0.47
MutPred
0.34
Gain of ubiquitination at K66 (P = 0.0371);
MVP
0.80
MPC
0.079
ClinPred
0.82
D
GERP RS
3.3
Varity_R
0.36
gMVP
0.69
Mutation Taster
=73/27
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

Publications

Other links and lift over

dbSNP: rs35523678; hg19: chr5-147204264; API