rs199757347

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_006846.4(SPINK5):​c.652C>G​(p.Arg218Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000018 in 1,611,218 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

SPINK5
NM_006846.4 missense

Scores

3
16

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0420

Publications

8 publications found
Variant links:
Genes affected
SPINK5 (HGNC:15464): (serine peptidase inhibitor Kazal type 5) This gene encodes a multidomain serine protease inhibitor that contains 15 potential inhibitory domains. The encoded preproprotein is proteolytically processed to generate multiple protein products, which may exhibit unique activities and specificities. These proteins may play a role in skin and hair morphogenesis, as well as anti-inflammatory and antimicrobial protection of mucous epithelia. Mutations in this gene may result in Netherton syndrome, a disorder characterized by ichthyosis, defective cornification, and atopy. This gene is present in a gene cluster on chromosome 5. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2015]
FBXO38-DT (HGNC:55589): (FBXO38 divergent transcript)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.09730002).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SPINK5NM_006846.4 linkc.652C>G p.Arg218Gly missense_variant Exon 8 of 33 ENST00000256084.8 NP_006837.2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SPINK5ENST00000256084.8 linkc.652C>G p.Arg218Gly missense_variant Exon 8 of 33 1 NM_006846.4 ENSP00000256084.7

Frequencies

GnomAD3 genomes
AF:
0.0000330
AC:
5
AN:
151726
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.000389
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000442
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000323
AC:
8
AN:
247388
AF XY:
0.0000149
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.000282
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000268
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000164
AC:
24
AN:
1459374
Hom.:
0
Cov.:
30
AF XY:
0.0000179
AC XY:
13
AN XY:
726052
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33312
American (AMR)
AF:
0.00
AC:
0
AN:
44538
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26046
East Asian (EAS)
AF:
0.000228
AC:
9
AN:
39454
South Asian (SAS)
AF:
0.0000348
AC:
3
AN:
86164
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53264
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5754
European-Non Finnish (NFE)
AF:
0.00000810
AC:
9
AN:
1110604
Other (OTH)
AF:
0.0000498
AC:
3
AN:
60238
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.444
Heterozygous variant carriers
0
2
3
5
6
8
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.0000329
AC:
5
AN:
151844
Hom.:
0
Cov.:
32
AF XY:
0.0000269
AC XY:
2
AN XY:
74220
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41446
American (AMR)
AF:
0.00
AC:
0
AN:
15208
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.000390
AC:
2
AN:
5130
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4822
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10580
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.0000442
AC:
3
AN:
67876
Other (OTH)
AF:
0.00
AC:
0
AN:
2104
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.485
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.00000483
Hom.:
0
ExAC
AF:
0.0000249
AC:
3
Asia WGS
AF:
0.000289
AC:
1
AN:
3478

ClinVar

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

Submissions by phenotype

Netherton syndrome Uncertain:1
Apr 24, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces arginine, which is basic and polar, with glycine, which is neutral and non-polar, at codon 218 of the SPINK5 protein (p.Arg218Gly). This variant is present in population databases (rs199757347, gnomAD 0.03%). This variant has not been reported in the literature in individuals affected with SPINK5-related conditions. ClinVar contains an entry for this variant (Variation ID: 968176). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.18
BayesDel_addAF
Benign
-0.21
T
BayesDel_noAF
Benign
-0.25
CADD
Benign
20
DANN
Uncertain
0.99
DEOGEN2
Benign
0.21
.;.;.;T
Eigen
Benign
-0.66
Eigen_PC
Benign
-0.89
FATHMM_MKL
Benign
0.048
N
LIST_S2
Benign
0.82
T;T;T;T
M_CAP
Benign
0.029
D
MetaRNN
Benign
0.097
T;T;T;T
MetaSVM
Benign
-0.80
T
MutationAssessor
Uncertain
2.6
M;M;.;M
PhyloP100
0.042
PrimateAI
Benign
0.42
T
PROVEAN
Benign
-2.0
N;N;N;N
REVEL
Benign
0.21
Sift
Benign
0.051
T;D;D;D
Sift4G
Uncertain
0.0060
D;D;D;D
Polyphen
1.0
D;P;.;D
Vest4
0.62
MutPred
0.40
Loss of MoRF binding (P = 0.0109);Loss of MoRF binding (P = 0.0109);.;Loss of MoRF binding (P = 0.0109);
MVP
0.45
MPC
0.53
ClinPred
0.31
T
GERP RS
-2.7
Varity_R
0.12
gMVP
0.46
Mutation Taster
=93/7
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: rs199757347; hg19: chr5-147470777; COSMIC: COSV108001585; API