chr14-94614458-C-T

Position:

• chr14-94614458-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001085.5(SERPINA3):​c.17C>T​(p.Pro6Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000536 in 1,613,982 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.00055 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00053 (0 hom.)
• Consequence: SERPINA3 NM_001085.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -1.85

Genes affected

SERPINA3 (HGNC:16): (serpin family A member 3) The protein encoded by this gene is a member of the serpin family of proteins, a group of proteins that inhibit serine proteases. This gene is one in a cluster of serpin genes located on the q arm of chromosome 14. Polymorphisms in this protein appear to be tissue specific and influence protease targeting. Variations in this protein's sequence have been implicated in Alzheimer's disease, and deficiency of this protein has been associated with liver disease. Mutations have been identified in patients with Parkinson disease and chronic obstructive pulmonary disease. [provided by RefSeq, Jun 2020]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.016086698).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SERPINA3	NM_001085.5	c.17C>T	p.Pro6Leu	missense_variant	2/5	ENST00000393078.5
SERPINA3	NM_001384672.1	c.17C>T	p.Pro6Leu	missense_variant	2/5
SERPINA3	NM_001384673.1	c.17C>T	p.Pro6Leu	missense_variant	3/6
SERPINA3	NM_001384674.1	c.17C>T	p.Pro6Leu	missense_variant	3/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SERPINA3	ENST00000393078.5	c.17C>T	p.Pro6Leu	missense_variant	2/5	1	NM_001085.5	P1

Frequencies

GnomAD3 genomes AF: 0.000552 AC: 84 AN: 152120 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000724

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000720

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000208

Gnomad FIN AF: 0.00170

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000750

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000666 AC: 167 AN: 250908 Hom.: 0 AF XY: 0.000804 AC XY: 109 AN XY: 135620

Gnomad AFR exome AF: 0.0000617

Gnomad AMR exome AF: 0.000636

Gnomad ASJ exome AF: 0.000298

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000163

Gnomad FIN exome AF: 0.00111

Gnomad NFE exome AF: 0.000978

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.000534 AC: 781 AN: 1461744 Hom.: 0 Cov.: 29 AF XY: 0.000575 AC XY: 418 AN XY: 727178

Gnomad4 AFR exome AF: 0.000179

Gnomad4 AMR exome AF: 0.000559

Gnomad4 ASJ exome AF: 0.000383

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000128

Gnomad4 FIN exome AF: 0.000957

Gnomad4 NFE exome AF: 0.000573

Gnomad4 OTH exome AF: 0.000580

GnomAD4 genome AF: 0.000552 AC: 84 AN: 152238 Hom.: 0 Cov.: 32 AF XY: 0.000712 AC XY: 53 AN XY: 74438

Gnomad4 AFR AF: 0.0000722

Gnomad4 AMR AF: 0.000719

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000208

Gnomad4 FIN AF: 0.00170

Gnomad4 NFE AF: 0.000750

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000695 Hom.: 0

Bravo AF: 0.000416

TwinsUK AF: 0.000270 AC: 1

ALSPAC AF: 0.000778 AC: 3

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000814 AC: 7

ExAC AF: 0.000749 AC: 91

Asia WGS AF: 0.000289 AC: 1 AN: 3478

EpiCase AF: 0.00136

EpiControl AF: 0.00136

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 17, 2023

The c.17C>T (p.P6L) alteration is located in exon 2 (coding exon 1) of the SERPINA3 gene. This alteration results from a C to T substitution at nucleotide position 17, causing the proline (P) at amino acid position 6 to be replaced by a leucine (L). 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	0.13
BayesDel_addAF	Benign	-0.34	T
BayesDel_noAF	Benign	-0.32
CADD	Benign	1.0
DANN	Benign	0.61
DEOGEN2	Benign	0.10	T;T;.;T
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.045	N
LIST_S2	Benign	0.55	T;.;T;.
M_CAP	Benign	0.021	T
MetaRNN	Benign	0.016	T;T;T;T
MetaSVM	Benign	-0.82	T
MutationAssessor	Benign	1.1	L;L;.;L
MutationTaster	Benign	1.0	N;N;N;N
PrimateAI	Benign	0.29	T
PROVEAN	Benign	-1.3	N;N;N;N
REVEL	Benign	0.28
Sift	Benign	0.27	T;T;T;T
Sift4G	Benign	0.76	T;T;T;T
Polyphen		0.061	B;B;.;B
Vest4		0.15
MVP		0.46
MPC		0.011
ClinPred		0.0034	T
GERP RS		-0.28
Varity_R		0.024
gMVP		0.21

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

Other links and lift over

dbSNP: rs138583013; hg19: chr14-95080795;