14-94378529-G-T

Variant summary

Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PM2PM5PP3_StrongPP5

The NM_000295.5(SERPINA1):​c.1177C>A​(p.Pro393Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,882 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 Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P393L) has been classified as Pathogenic.

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

SERPINA1
NM_000295.5 missense

Scores

9
6
4

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:1

Conservation

PhyloP100: 8.72
Variant links:
Genes affected
SERPINA1 (HGNC:8941): (serpin family A member 1) The protein encoded by this gene is a serine protease inhibitor belonging to the serpin superfamily whose targets include elastase, plasmin, thrombin, trypsin, chymotrypsin, and plasminogen activator. This protein is produced in the liver, the bone marrow, by lymphocytic and monocytic cells in lymphoid tissue, and by the Paneth cells of the gut. Defects in this gene are associated with chronic obstructive pulmonary disease, emphysema, and chronic liver disease. Several transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Aug 2020]

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 9 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PM5
Other missense variant is known to change same aminoacid residue: Variant chr14-94378528-G-A is described in Lovd as [Pathogenic].
PP3
MetaRNN computational evidence supports a deleterious effect, 0.987
PP5
Variant 14-94378529-G-T is Pathogenic according to our data. Variant chr14-94378529-G-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 219360.We mark this variant Likely_pathogenic, oryginal submissions are: {Uncertain_significance=1, Pathogenic=1}.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
SERPINA1NM_000295.5 linkuse as main transcriptc.1177C>A p.Pro393Thr missense_variant 5/5 ENST00000393087.9 NP_000286.3

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
SERPINA1ENST00000393087.9 linkuse as main transcriptc.1177C>A p.Pro393Thr missense_variant 5/51 NM_000295.5 ENSP00000376802.4 P01009-1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461882
Hom.:
0
Cov.:
33
AF XY:
0.00000138
AC XY:
1
AN XY:
727242
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:
8.99e-7
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
33

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Pathogenic:1Uncertain:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

Alpha-1-antitrypsin deficiency Pathogenic:1
Pathogenic, criteria provided, single submitterclinical testingHerediLab, Inc.Dec 02, 2015- -
not provided Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingEurofins Ntd Llc (ga)Oct 16, 2017- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.45
BayesDel_addAF
Pathogenic
0.56
D
BayesDel_noAF
Pathogenic
0.56
CADD
Benign
23
DANN
Uncertain
0.99
DEOGEN2
Uncertain
0.78
D;D;D;D;D;D;D;D;D
Eigen
Pathogenic
0.68
Eigen_PC
Uncertain
0.48
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Benign
0.57
.;.;.;T;.;.;.;.;.
M_CAP
Benign
0.055
D
MetaRNN
Pathogenic
0.99
D;D;D;D;D;D;D;D;D
MetaSVM
Pathogenic
1.1
D
MutationAssessor
Pathogenic
3.9
H;H;H;H;H;H;H;H;H
PrimateAI
Benign
0.45
T
PROVEAN
Pathogenic
-7.3
D;D;D;D;D;.;D;D;D
REVEL
Pathogenic
0.85
Sift
Uncertain
0.0010
D;D;D;D;D;.;D;D;D
Sift4G
Uncertain
0.0030
D;D;D;D;D;.;D;D;D
Polyphen
1.0
D;D;D;D;D;D;D;D;D
Vest4
0.88
MutPred
0.86
Gain of catalytic residue at F396 (P = 0.017);Gain of catalytic residue at F396 (P = 0.017);Gain of catalytic residue at F396 (P = 0.017);Gain of catalytic residue at F396 (P = 0.017);Gain of catalytic residue at F396 (P = 0.017);Gain of catalytic residue at F396 (P = 0.017);Gain of catalytic residue at F396 (P = 0.017);Gain of catalytic residue at F396 (P = 0.017);Gain of catalytic residue at F396 (P = 0.017);
MVP
1.0
MPC
0.32
ClinPred
1.0
D
GERP RS
4.5
Varity_R
0.71
gMVP
0.74

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: rs61761869; hg19: chr14-94844866; API