rs1303

Variant names:

• chr14-94378506-T-A
• rs1303
• NM_000295.5:c.1200A>T

Your query was ambiguous. Multiple possible variants found:

• chr14-94378506-T-A
• chr14-94378506-T-C
• chr14-94378506-T-G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 4P and 4B. PM1 PM2 BP4_Strong

The NM_000295.5(SERPINA1):​c.1200A>T​(p.Glu400Asp) 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 benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Likely benign in ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SERPINA1 NM_000295.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.75
• Publications: 0 publications found

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]

SERPINA1 Gene-Disease associations (from GenCC):

• alpha 1-antitrypsin deficiency

  Inheritance: AR Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Genomics England PanelApp, Orphanet, PanelApp Australia, Labcorp Genetics (formerly Invitae)
• hemorrhagic disease due to alpha-1-antitrypsin Pittsburgh mutation

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• cystic fibrosis

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM1: In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 2 uncertain in NM_000295.5
• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.047739).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000295.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SERPINA1	NM_000295.5	MANE Select	c.1200A>T	p.Glu400Asp	missense	Exon 5 of 5	NP_000286.3
	SERPINA1	NM_001002235.3		c.1200A>T	p.Glu400Asp	missense	Exon 5 of 5	NP_001002235.1	E9KL23
	SERPINA1	NM_001002236.3		c.1200A>T	p.Glu400Asp	missense	Exon 7 of 7	NP_001002236.1	E9KL23

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SERPINA1	ENST00000393087.9	TSL:1 MANE Select	c.1200A>T	p.Glu400Asp	missense	Exon 5 of 5	ENSP00000376802.4	P01009-1
	SERPINA1	ENST00000355814.8	TSL:1	c.1200A>T	p.Glu400Asp	missense	Exon 5 of 5	ENSP00000348068.4	P01009-1
	SERPINA1	ENST00000393088.8	TSL:1	c.1200A>T	p.Glu400Asp	missense	Exon 7 of 7	ENSP00000376803.4	P01009-1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 36

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.20	T
BayesDel_noAF	Benign	-0.53
CADD	Benign	0.0010
DANN	Benign	0.12
DEOGEN2	Benign	0.12	T
Eigen	Benign	-2.1
Eigen_PC	Benign	-2.2
FATHMM_MKL	Benign	0.028	N
LIST_S2	Benign	0.31	T
M_CAP	Benign	0.060	D
MetaRNN	Benign	0.048	T
MetaSVM	Benign	-0.63	T
MutationAssessor	Benign	-0.58	N
PhyloP100		-2.8
PrimateAI	Benign	0.31	T
PROVEAN	Benign	1.5	N
REVEL	Benign	0.16
Sift	Benign	1.0	T
Sift4G	Benign	1.0	T
Polyphen		0.0	B
Vest4		0.036
MutPred		0.35		Gain of catalytic residue at Q401 (P = 9e-04)
MVP		0.85
MPC		0.042
ClinPred		0.052	T
GERP RS		-9.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.29
gMVP		0.37
Mutation Taster		=100/0	polymorphism

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

Other links and lift over

dbSNP: rs1303; hg19: chr14-94844843;