rs771566450

Variant names:

• chr17-39658439-C-G
• rs771566450
• NM_006804.4:c.464C>G

Your query was ambiguous. Multiple possible variants found:

• chr17-39658439-C-G
• chr17-39658439-C-T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_006804.4(STARD3):​c.464C>G​(p.Pro155Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,846 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. P155L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: STARD3 NM_006804.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.57
• Publications: 0 publications found

Genes affected

STARD3 (HGNC:17579): (StAR related lipid transfer domain containing 3) This gene encodes a member of a subfamily of lipid trafficking proteins that are characterized by a C-terminal steroidogenic acute regulatory domain and an N-terminal metastatic lymph node 64 domain. The encoded protein localizes to the membranes of late endosomes and may be involved in exporting cholesterol. Alternative splicing results in multiple transcript variants.[provided by RefSeq, Oct 2009]

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006804.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	STARD3	NM_006804.4	MANE Select	c.464C>G	p.Pro155Arg	missense	Exon 6 of 15	NP_006795.3
	STARD3	NM_001165937.2		c.451C>G	p.Pro151Ala	missense	Exon 6 of 15	NP_001159409.1	Q14849-3
	STARD3	NM_001165938.2		c.410C>G	p.Pro137Arg	missense	Exon 5 of 14	NP_001159410.1	Q14849-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	STARD3	ENST00000336308.10	TSL:1 MANE Select	c.464C>G	p.Pro155Arg	missense	Exon 6 of 15	ENSP00000337446.5	Q14849-1
	STARD3	ENST00000580611.5	TSL:5	c.386C>G	p.Pro129Arg	missense	Exon 5 of 14	ENSP00000463613.1	J3QLM1
	STARD3	ENST00000936728.1		c.502C>G	p.Pro168Ala	missense	Exon 6 of 15	ENSP00000606787.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461846 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 727230

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26130

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00000270 AC: 3 AN: 1111980

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Uncertain	0.014	T
BayesDel_noAF	Uncertain	0.12
CADD	Pathogenic	29
DANN	Benign	0.88
Eigen	Pathogenic	0.80
Eigen_PC	Pathogenic	0.77
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.40	T
M_CAP	Benign	0.067	D
MetaRNN	Uncertain	0.63	D
MetaSVM	Benign	-0.53	T
PhyloP100		7.6
PROVEAN	Benign	0.71	N
REVEL	Uncertain	0.37
Sift	Benign	0.72	T
Sift4G	Benign	0.12	T
Vest4		0.35
MutPred		0.35		Gain of helix (P = 0.0143)
MVP		0.79
ClinPred		0.97	D
GERP RS		5.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.47

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

Other links and lift over

dbSNP: rs771566450; hg19: chr17-37814692;