Genetic Variant SFTPA1:p.Pro91Ser (chr10-79612410-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_005411.5(SFTPA1):c.271C>T(p.Pro91Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,418 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign 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. P91A) has been classified as Benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

SFTPA1
NM_005411.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.759

Publications

12 publications found

Variant links:

Genes affected

SFTPA1 (HGNC:10798): (surfactant protein A1) This gene encodes a lung surfactant protein that is a member of a subfamily of C-type lectins called collectins. The encoded protein binds specific carbohydrate moieties found on lipids and on the surface of microorganisms. This protein plays an essential role in surfactant homeostasis and in the defense against respiratory pathogens. Mutations in this gene are associated with idiopathic pulmonary fibrosis. Alternate splicing results in multiple transcript variants. [provided by RefSeq, May 2010]

SFTPA1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.39254963).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SFTPA1	NM_005411.5 link	c.271C>T	p.Pro91Ser	missense_variant	Exon 4 of 6	ENST00000398636.8	NP_005402.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
SFTPA1	ENST00000398636.8 link	c.271C>T	p.Pro91Ser	missense_variant	Exon 4 of 6	1	NM_005411.5	ENSP00000381633.3
SFTPA1	ENST00000419470.6 link	c.316C>T	p.Pro106Ser	missense_variant	Exon 4 of 6	1		ENSP00000397082.2
SFTPA1	ENST00000428376.6 link	c.271C>T	p.Pro91Ser	missense_variant	Exon 3 of 5	1		ENSP00000411102.2
SFTPA1	ENST00000429958.5 link	c.271C>T	p.Pro91Ser	missense_variant	Exon 3 of 5	1		ENSP00000395527.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000398

AC:

AN:

251330

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461418

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727038

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44706

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26118

East Asian (EAS)

AF:

0.00

AC:

AN:

39684

South Asian (SAS)

AF:

0.00

AC:

AN:

86248

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53326

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

9.00e-7

AC:

AN:

1111720

Other (OTH)

AF:

0.00

AC:

AN:

60376

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Uncertain

0.11

BayesDel_noAF

Benign

-0.090

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.13

T;T;.;.;.

Eigen

Benign

-0.070

Eigen_PC

Benign

-0.13

FATHMM_MKL

Benign

0.52

LIST_S2

Uncertain

0.92

.;D;D;.;D

M_CAP

Uncertain

0.099

MetaRNN

Benign

0.39

T;T;T;T;T

MetaSVM

Uncertain

0.34

MutationAssessor

Uncertain

2.0

M;M;.;.;.

PhyloP100

0.76

PrimateAI

Uncertain

0.49

PROVEAN

Uncertain

-2.4

N;N;N;D;D

REVEL

Uncertain

0.47

Sift

Benign

0.11

T;T;T;T;T

Sift4G

Benign

0.15

T;T;T;T;T

Polyphen

0.72

P;P;.;.;.

Vest4

0.35

MutPred

0.40

Gain of phosphorylation at P91 (P = 0.0061);Gain of phosphorylation at P91 (P = 0.0061);.;Gain of phosphorylation at P91 (P = 0.0061);Gain of phosphorylation at P91 (P = 0.0061);

MVP

0.93

MPC

0.13

ClinPred

0.63

GERP RS

2.7

Varity_R

0.062

gMVP

0.26

Mutation Taster

=91/9

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over