18-63978310-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PVS1_SupportingPM2PP5_Moderate

The NM_002640.4(SERPINB8):​c.2T>C​(p.Met1?) variant causes a start lost change. The variant allele was found at a frequency of 0.0000675 in 1,614,086 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000073 ( 0 hom. )

Consequence

SERPINB8
NM_002640.4 start_lost

Scores

9
5
2

Clinical Significance

Pathogenic criteria provided, single submitter P:2

Conservation

PhyloP100: 7.05
Variant links:
Genes affected
SERPINB8 (HGNC:8952): (serpin family B member 8) The protein encoded by this gene is a member of the ov-serpin family of serine protease inhibitors. The encoded protein is produced by platelets and can bind to and inhibit the function of furin, a serine protease involved in platelet functions. In addition, this protein has been found to enhance the mechanical stability of cell-cell adhesion in the skin, and defects in this gene have been associated with an autosomal-recessive form of exfoliative ichthyosis. [provided by RefSeq, Jan 2017]
HMSD (HGNC:23037): (histocompatibility minor serpin domain containing) This gene encodes a serpin-domain containing protein that may function as a serine protease inhibitor. This gene is primarily expressed in cells of myeloid lineage. A polymorphism in this gene may result in the expression a splice variant that encodes a minor histocompatibility antigen. [provided by RefSeq, Oct 2010]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 5 ACMG points.

PVS1
Start lost variant, no pathogenic variants between lost start and next in-frame start position. Next in-frame start position is after 33 codons. Genomic position: 63978405. Lost 0.086 part of the original CDS.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 18-63978310-T-C is Pathogenic according to our data. Variant chr18-63978310-T-C is described in ClinVar as [Pathogenic]. Clinvar id is 254199.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SERPINB8NM_002640.4 linkc.2T>C p.Met1? start_lost Exon 2 of 7 ENST00000397985.7 NP_002631.3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SERPINB8ENST00000397985.7 linkc.2T>C p.Met1? start_lost Exon 2 of 7 1 NM_002640.4 ENSP00000381072.2 P50452-1

Frequencies

GnomAD3 genomes
AF:
0.0000131
AC:
2
AN:
152210
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:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000294
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000279
AC:
7
AN:
251188
Hom.:
0
AF XY:
0.0000221
AC XY:
3
AN XY:
135780
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 SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000529
Gnomad OTH exome
AF:
0.000163
GnomAD4 exome
AF:
0.0000732
AC:
107
AN:
1461876
Hom.:
0
Cov.:
31
AF XY:
0.0000770
AC XY:
56
AN XY:
727236
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000926
Gnomad4 OTH exome
AF:
0.0000497
GnomAD4 genome
AF:
0.0000131
AC:
2
AN:
152210
Hom.:
0
Cov.:
32
AF XY:
0.0000134
AC XY:
1
AN XY:
74358
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000294
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000116
Hom.:
0
Bravo
AF:
0.0000189
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.0000330
AC:
4
EpiCase
AF:
0.000109
EpiControl
AF:
0.00

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Peeling skin syndrome 5 Pathogenic:2
Oct 04, 2024
Al Jalila Children’s Genomics Center, Al Jalila Childrens Speciality Hospital
Significance: Pathogenic
Review Status: criteria provided, single submitter
Collection Method: research

PVS1,PS3,PM2 -

Sep 13, 2016
OMIM
Significance: Pathogenic
Review Status: no assertion criteria provided
Collection Method: literature only

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.50
D
BayesDel_noAF
Pathogenic
0.39
CADD
Uncertain
24
DANN
Uncertain
0.99
DEOGEN2
Benign
0.37
T;T;.;.;T;T
Eigen
Uncertain
0.57
Eigen_PC
Uncertain
0.53
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Uncertain
0.90
.;D;D;D;D;D
M_CAP
Pathogenic
0.52
D
MetaRNN
Pathogenic
0.94
D;D;D;D;D;D
MetaSVM
Uncertain
0.57
D
PROVEAN
Pathogenic
-5.5
D;D;.;D;D;D
REVEL
Pathogenic
0.88
Sift
Pathogenic
0.0
D;D;.;D;D;D
Sift4G
Pathogenic
0.0
D;D;.;D;D;D
Polyphen
1.0
D;D;.;.;.;.
Vest4
0.99
MVP
0.97
ClinPred
0.98
D
GERP RS
4.9
Varity_R
0.90
gMVP
0.81

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs374612640; hg19: chr18-61645544; API