Genetic Variant NM_001085.5:c.233T>A (chr14-94614674-T-A) – ACMG Classification: Uncertain_significance (5 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2PM5PP3

The NM_001085.5(SERPINA3):c.233T>A(p.Leu78Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L78P) has been classified as Pathogenic.

Frequency

Genomes: not found (cov: 32)

Consequence

SERPINA3
NM_001085.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.35

Publications

7 publications found

Variant links:

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]

SERPINA3 links:

ENSG00000273259 (HGNC:):

ENSG00000273259 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr14-94614674-T-C is described in ClinVar as Pathogenic. ClinVar VariationId is 18049.Status of the report is no_assertion_criteria_provided, 0 stars.

PP3

Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001085.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SERPINA3	NM_001085.5	MANE Select	c.233T>A	p.Leu78Gln	missense	Exon 2 of 5	NP_001076.2
SERPINA3	NM_001384672.1		c.233T>A	p.Leu78Gln	missense	Exon 2 of 5	NP_001371601.1
SERPINA3	NM_001384673.1		c.233T>A	p.Leu78Gln	missense	Exon 3 of 6	NP_001371602.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SERPINA3	ENST00000393078.5	TSL:1 MANE Select	c.233T>A	p.Leu78Gln	missense	Exon 2 of 5	ENSP00000376793.3
SERPINA3	ENST00000393080.8	TSL:1	c.233T>A	p.Leu78Gln	missense	Exon 2 of 5	ENSP00000376795.4
ENSG00000273259	ENST00000553947.1	TSL:2	n.*1059T>A		non_coding_transcript_exon	Exon 5 of 8	ENSP00000452367.2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000586

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.32

BayesDel_addAF

Pathogenic

0.21

BayesDel_noAF

Uncertain

0.060

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.72

Eigen

Uncertain

0.46

Eigen_PC

Uncertain

0.26

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.93

M_CAP

Benign

0.025

MetaRNN

Pathogenic

0.93

MetaSVM

Pathogenic

0.93

MutationAssessor

Pathogenic

3.8

PhyloP100

3.4

PrimateAI

Benign

0.27

PROVEAN

Pathogenic

-4.8

REVEL

Pathogenic

0.65

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0030

Polyphen

1.0

Vest4

0.59

MutPred

0.75

Gain of catalytic residue at A83 (P = 0.0021)

MVP

0.96

MPC

0.072

ClinPred

0.99

GERP RS

5.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.84

gMVP

0.27

Mutation Taster

=26/74

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.52

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.52

Position offset: 2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over