Genetic Variant STARD5:p.Glu15Lys (chr15-81324057-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_181900.3(STARD5):c.43G>A(p.Glu15Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000693 in 1,586,208 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000070 ( 0 hom. )

Consequence

STARD5
NM_181900.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.11

Variant links:

Genes affected

STARD5 (HGNC:18065): (StAR related lipid transfer domain containing 5) Proteins containing a steroidogenic acute regulatory-related lipid transfer (START) domain are often involved in the trafficking of lipids and cholesterol between diverse intracellular membranes. This gene is a member of the StarD subfamily that encodes START-related lipid transfer proteins. The protein encoded by this gene is a cholesterol transporter and is also able to bind and transport other sterol-derived molecules related to the cholesterol/bile acid biosynthetic pathways such as 25-hydroxycholesterol. Its expression is upregulated during endoplasmic reticulum (ER) stress. The protein is thought to act as a cytosolic sterol transporter that moves cholesterol between intracellular membranes such as from the cytoplasm to the ER and from the ER to the Golgi apparatus. Alternative splicing of this gene produces multiple transcript variants. [provided by RefSeq, Jan 2016]

STARD5 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.26489836).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
STARD5	NM_181900.3 link	c.43G>A	p.Glu15Lys	missense_variant	Exon 1 of 6	ENST00000302824.7	NP_871629.1	Q9NSY2-1
STARD5	NR_135013.2 link	n.85G>A		non_coding_transcript_exon_variant	Exon 1 of 5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
STARD5	ENST00000302824.7 link	c.43G>A	p.Glu15Lys	missense_variant	Exon 1 of 6	1	NM_181900.3	ENSP00000304032.6		Q9NSY2-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152262

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000309

AC:

AN:

226622

Hom.:

AF XY:

0.0000243

AC XY:

AN XY:

123432

show subpopulations

Gnomad AFR exome

AF:

0.0000735

Gnomad AMR exome

AF:

0.000125

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000612

Gnomad SAS exome

AF:

0.0000357

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000697

AC:

AN:

1433946

Hom.:

Cov.:

AF XY:

0.00000843

AC XY:

AN XY:

711588

show subpopulations

Gnomad4 AFR exome

AF:

0.0000307

Gnomad4 AMR exome

AF:

0.000117

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000263

Gnomad4 SAS exome

AF:

0.0000120

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000183

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152262

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74392

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000329

Hom.:

Bravo

AF:

0.0000151

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 30, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.43G>A (p.E15K) alteration is located in exon 1 (coding exon 1) of the STARD5 gene. This alteration results from a G to A substitution at nucleotide position 43, causing the glutamic acid (E) at amino acid position 15 to be replaced by a lysine (K). 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

0.096

BayesDel_addAF

Benign

-0.056

BayesDel_noAF

Uncertain

-0.080

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.025

Eigen

Benign

-0.38

Eigen_PC

Benign

-0.41

FATHMM_MKL

Benign

0.76

LIST_S2

Benign

0.76

M_CAP

Uncertain

0.14

MetaRNN

Benign

0.26

MetaSVM

Benign

-0.69

MutationAssessor

Uncertain

2.4

PrimateAI

Uncertain

0.51

PROVEAN

Benign

-1.5

REVEL

Uncertain

0.33

Sift

Benign

0.082

Sift4G

Benign

0.12

Polyphen

0.76

Vest4

0.38

MutPred

0.54

Gain of MoRF binding (P = 0.0034);

MVP

0.77

MPC

0.26

ClinPred

0.091

GERP RS

4.1

Varity_R

0.42

gMVP

0.48

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