Variant chr18-24172478-T-C details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_080597.4(OSBPL1A):c.2099A>G(p.Asn700Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000616 in 1,460,104 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 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: 0.0000062 ( 0 hom. )

Consequence

OSBPL1A
NM_080597.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.32

Variant links:

Genes affected

OSBPL1A (HGNC:16398): (oxysterol binding protein like 1A) This gene encodes a member of the oxysterol-binding protein (OSBP) family, a group of intracellular lipid receptors. Most members contain an N-terminal pleckstrin homology domain and a highly conserved C-terminal OSBP-like sterol-binding domain, although some members contain only the sterol-binding domain. Transcript variants derived from alternative promoter usage and/or alternative splicing exist; they encode different isoforms. [provided by RefSeq, Jul 2008]

OSBPL1A 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=0.1198504).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
OSBPL1A	NM_080597.4 linkuse as main transcript	c.2099A>G	p.Asn700Ser	missense_variant	22/28	ENST00000319481.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
OSBPL1A	ENST00000319481.8 linkuse as main transcript	c.2099A>G	p.Asn700Ser	missense_variant	22/28	1	NM_080597.4	P1	Q9BXW6-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000399

AC:

AN:

250720

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135484

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000616

AC:

AN:

1460104

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

726432

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:

0.00000720

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 12, 2023

The c.2099A>G (p.N700S) alteration is located in exon 22 (coding exon 21) of the OSBPL1A gene. This alteration results from a A to G substitution at nucleotide position 2099, causing the asparagine (N) at amino acid position 700 to be replaced by a serine (S). 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

0.061

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.67

CADD

Benign

DANN

Benign

0.92

DEOGEN2

Benign

0.078

T;.;.;.

Eigen

Benign

-0.31

Eigen_PC

Benign

-0.21

FATHMM_MKL

Uncertain

0.86

LIST_S2

Uncertain

0.90

D;D;D;D

M_CAP

Benign

0.0034

MetaRNN

Benign

0.12

T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.8

L;.;.;.

MutationTaster

Benign

0.99

D;D;D

PrimateAI

Benign

0.37

PROVEAN

Benign

-2.3

N;D;D;.

REVEL

Benign

0.17

Sift

Benign

0.10

T;T;T;.

Sift4G

Benign

0.15

T;T;T;T

Polyphen

0.0

B;.;.;.

Vest4

0.12

MutPred

0.51

Loss of catalytic residue at N700 (P = 0.0062);.;.;.;

MVP

0.34

MPC

0.52

ClinPred

0.11

GERP RS

0.33

Varity_R

0.27

gMVP

0.25

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.070

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