Variant chr18-24178193-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.1913A>G(p.Asp638Gly) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000261 in 1,477,140 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00018 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00027 ( 0 hom. )

Consequence

OSBPL1A
NM_080597.4 missense, splice_region

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.01

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=0.09290865).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
OSBPL1A	NM_080597.4 linkuse as main transcript	c.1913A>G	p.Asp638Gly	missense_variant, splice_region_variant	21/28	ENST00000319481.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
OSBPL1A	ENST00000319481.8 linkuse as main transcript	c.1913A>G	p.Asp638Gly	missense_variant, splice_region_variant	21/28	1	NM_080597.4	P1	Q9BXW6-1

Frequencies

GnomAD3 genomes

AF:

0.000178

AC:

AN:

145914

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000686

Gnomad ASJ

AF:

0.00116

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000313

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000181

AC:

AN:

204914

Hom.:

AF XY:

0.000152

AC XY:

AN XY:

112044

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00227

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000171

Gnomad OTH exome

AF:

0.000868

GnomAD4 exome

AF:

0.000270

AC:

359

AN:

1331226

Hom.:

Cov.:

AF XY:

0.000263

AC XY:

173

AN XY:

656862

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00272

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000208

Gnomad4 NFE exome

AF:

0.000285

Gnomad4 OTH exome

AF:

0.0000558

GnomAD4 genome

AF:

0.000178

AC:

AN:

145914

Hom.:

Cov.:

AF XY:

0.000127

AC XY:

AN XY:

70712

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000686

Gnomad4 ASJ

AF:

0.00116

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000313

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000361

Hom.:

Bravo

AF:

0.000151

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000107

AC:

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

Mar 16, 2022

The c.1913A>G (p.D638G) alteration is located in exon 21 (coding exon 20) of the OSBPL1A gene. This alteration results from a A to G substitution at nucleotide position 1913, causing the aspartic acid (D) at amino acid position 638 to be replaced by a glycine (G). 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

0.12

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.32

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.13

T;.;.

Eigen

Uncertain

0.41

Eigen_PC

Uncertain

0.51

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.94

D;D;D

M_CAP

Benign

0.021

MetaRNN

Benign

0.093

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.4

L;.;.

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.72

PROVEAN

Uncertain

-3.1

D;D;D

REVEL

Benign

0.21

Sift

Benign

0.043

D;T;T

Sift4G

Uncertain

0.042

D;T;T

Polyphen

0.65

P;.;.

Vest4

0.36

MVP

0.44

MPC

1.4

ClinPred

0.19

GERP RS

5.7

Varity_R

0.55

gMVP

0.66

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