Variant chr2-85665659-C-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The ENST00000519937.7(SFTPB):c.529G>C(p.Val177Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,822 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. 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. V177I) has been classified as Benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

SFTPB
ENST00000519937.7 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.0820

Variant links:

Genes affected

SFTPB (HGNC:10801): (surfactant protein B) This gene encodes the pulmonary-associated surfactant protein B (SPB), an amphipathic surfactant protein essential for lung function and homeostasis after birth. Pulmonary surfactant is a surface-active lipoprotein complex composed of 90% lipids and 10% proteins which include plasma proteins and apolipoproteins SPA, SPB, SPC and SPD. The surfactant is secreted by the alveolar cells of the lung and maintains the stability of pulmonary tissue by reducing the surface tension of fluids that coat the lung. The SPB enhances the rate of spreading and increases the stability of surfactant monolayers in vitro. Multiple mutations in this gene have been identified, which cause pulmonary surfactant metabolism dysfunction type 1, also called pulmonary alveolar proteinosis due to surfactant protein B deficiency, and are associated with fatal respiratory distress in the neonatal period. Alternatively spliced transcript variants encoding the same protein have been identified.[provided by RefSeq, Feb 2010]

SFTPB links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.13776636).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SFTPB	NM_000542.5 linkuse as main transcript	c.529G>C	p.Val177Leu	missense_variant	5/11	ENST00000519937.7	NP_000533.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris
SFTPB	ENST00000519937.7 linkuse as main transcript	c.529G>C	p.Val177Leu	missense_variant	5/11	1	NM_000542.5	ENSP00000428719	P1
SFTPB	ENST00000393822.7 linkuse as main transcript	c.529G>C	p.Val177Leu	missense_variant	6/12	1		ENSP00000377409	P1
SFTPB	ENST00000409383.6 linkuse as main transcript	c.529G>C	p.Val177Leu	missense_variant	6/12	1		ENSP00000386346	P1
SFTPB	ENST00000428225.5 linkuse as main transcript	c.520G>C	p.Val174Leu	missense_variant	5/11	2		ENSP00000415347

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251052

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135772

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 SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1461822

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727212

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:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000270

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.46

CADD

Benign

2.3

DANN

Benign

0.97

DEOGEN2

Benign

0.16

T;T;T

Eigen

Benign

-0.73

Eigen_PC

Benign

-0.72

FATHMM_MKL

Benign

0.15

LIST_S2

Benign

0.73

.;T;T

M_CAP

Benign

0.017

MetaRNN

Benign

0.14

T;T;T

MetaSVM

Benign

-0.97

MutationAssessor

Benign

1.4

L;L;.

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.36

PROVEAN

Benign

-1.1

.;.;N

REVEL

Benign

0.074

Sift

Benign

0.19

.;.;T

Sift4G

Benign

0.062

T;T;T

Polyphen

0.10

B;B;B

Vest4

0.13

MutPred

0.24

.;.;Loss of methylation at K187 (P = 0.0753);

MVP

0.65

MPC

0.29

ClinPred

0.059

GERP RS

0.70

Varity_R

0.048

gMVP

0.39

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

LitVar

Other links and lift over