Genetic Variant NM_206943.4:c.359C>T (chr2-32947683-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

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

The NM_206943.4(LTBP1):c.359C>T(p.Pro120Leu) 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. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 7.4e-7 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

LTBP1
NM_206943.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.139

Variant links:

Genes affected

LTBP1 (HGNC:6714): (latent transforming growth factor beta binding protein 1) The protein encoded by this gene belongs to the family of latent TGF-beta binding proteins (LTBPs). The secretion and activation of TGF-betas is regulated by their association with latency-associated proteins and with latent TGF-beta binding proteins. The product of this gene targets latent complexes of transforming growth factor beta to the extracellular matrix, where the latent cytokine is subsequently activated by several different mechanisms. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Jul 2008]

LTBP1 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=0.1644659).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LTBP1	NM_206943.4 link	c.359C>T	p.Pro120Leu	missense_variant	Exon 1 of 34	ENST00000404816.7	NP_996826.3	Q14766-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LTBP1	ENST00000404816.7 link	c.359C>T	p.Pro120Leu	missense_variant	Exon 1 of 34	5	NM_206943.4	ENSP00000386043.2		Q14766-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

7.43e-7

AC:

AN:

1346322

Hom.:

Cov.:

AF XY:

0.00000150

AC XY:

AN XY:

666140

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:

9.48e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000902

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 03, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.359C>T (p.P120L) alteration is located in exon 1 (coding exon 1) of the LTBP1 gene. This alteration results from a C to T substitution at nucleotide position 359, causing the proline (P) at amino acid position 120 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.091

BayesDel_addAF

Benign

-0.095

BayesDel_noAF

Benign

-0.37

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.15

Eigen

Benign

-0.64

Eigen_PC

Benign

-0.59

FATHMM_MKL

Benign

0.20

LIST_S2

Benign

0.63

M_CAP

Pathogenic

0.82

MetaRNN

Benign

0.16

MetaSVM

Benign

-0.71

MutationAssessor

Benign

0.69

PrimateAI

Pathogenic

0.87

PROVEAN

Benign

-1.1

REVEL

Benign

0.11

Sift

Uncertain

0.0030

Sift4G

Uncertain

0.0090

Vest4

0.16

MutPred

0.20

Loss of sheet (P = 0.1907);

MVP

0.043

MPC

0.13

ClinPred

0.64

GERP RS

2.4

Varity_R

0.066

gMVP

0.26

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

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over