18-63897119-C-T

Variant names:

• chr18-63897119-C-T
• rs1026386750
• NM_002575.3:c.317C>T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_002575.3(SERPINB2):​c.317C>T​(p.Ser106Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,460,856 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: SERPINB2 NM_002575.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.271

Genes affected

SERPINB2 (HGNC:8584): (serpin family B member 2) Predicted to enable serine-type endopeptidase inhibitor activity. Predicted to be involved in negative regulation of endopeptidase activity. Predicted to be located in extracellular region and plasma membrane. Predicted to be active in extracellular space. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.2847442).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SERPINB2	NM_002575.3	c.317C>T	p.Ser106Phe	missense_variant	Exon 4 of 8	ENST00000299502.9	NP_002566.1
SERPINB2	NM_001143818.2	c.317C>T	p.Ser106Phe	missense_variant	Exon 5 of 9		NP_001137290.1
SERPINB2	XM_024451192.2	c.317C>T	p.Ser106Phe	missense_variant	Exon 4 of 8		XP_024306960.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SERPINB2	ENST00000299502.9	c.317C>T	p.Ser106Phe	missense_variant	Exon 4 of 8	1	NM_002575.3	ENSP00000299502.4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.00000399 AC: 1 AN: 250746 Hom.: 0 AF XY: 0.00000738 AC XY: 1 AN XY: 135520

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000291

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: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1460856 Hom.: 0 Cov.: 30 AF XY: 0.00000275 AC XY: 2 AN XY: 726720

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000224

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000232

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.18
BayesDel_addAF	Benign	-0.029	T
BayesDel_noAF	Benign	-0.20
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Benign	0.098	T;T;T;T;T
Eigen	Benign	-0.083
Eigen_PC	Benign	-0.12
FATHMM_MKL	Benign	0.11	N
LIST_S2	Benign	0.71	T;.;T;T;T
M_CAP	Benign	0.055	D
MetaRNN	Benign	0.28	T;T;T;T;T
MetaSVM	Benign	-0.49	T
MutationAssessor	Benign	1.8	.;L;L;.;.
PrimateAI	Benign	0.30	T
PROVEAN	Benign	-1.1	N;D;D;D;D
REVEL	Uncertain	0.37
Sift	Uncertain	0.019	D;D;D;D;D
Sift4G	Uncertain	0.0060	D;D;D;D;D
Polyphen		0.88	.;P;P;.;.
Vest4		0.28, 0.28
MutPred		0.59		Loss of disorder (P = 0.0051);Loss of disorder (P = 0.0051);Loss of disorder (P = 0.0051);Loss of disorder (P = 0.0051);Loss of disorder (P = 0.0051);
MVP		0.81
MPC		0.060
ClinPred		0.64	D
GERP RS		3.0
Varity_R		0.23
gMVP		0.50

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		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

Other links and lift over

dbSNP: rs1026386750; hg19: chr18-61564353;