rs797045192

chr20-765602-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_033409.4(SLC52A3):c.173T>A(p.Val58Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as not provided (no stars). Synonymous variant affecting the same amino acid position (i.e. V58V) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 31)
• Consequence: SLC52A3 NM_033409.4 missense
• Clinical Significance: not provided no classification provided O:1
• Conservation: PhyloP100: 9.24

Genes affected

SLC52A3 (HGNC:16187): (solute carrier family 52 member 3) This gene encodes a riboflavin transporter protein that is strongly expressed in the intestine and likely plays a role in intestinal absorption of riboflavin. The protein is predicted to have eleven transmembrane domains and a cell surface localization signal in the C-terminus. Mutations at this locus have been associated with Brown-Vialetto-Van Laere syndrome and Fazio-Londe disease. [provided by RefSeq, Mar 2012]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.889

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SLC52A3	NM_033409.4	c.173T>A	p.Val58Asp	missense_variant	2/5	ENST00000645534.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SLC52A3	ENST00000645534.1	c.173T>A	p.Val58Asp	missense_variant	2/5		NM_033409.4	P1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 37

GnomAD4 genome Cov.: 31

ClinVar

Significance: not provided

Submissions summary: Other:1

Revision: no classification provided

Submissions by phenotype

Brown-Vialetto-van Laere syndrome 1 Other:1

not provided, no classification provided

literature only

GeneReviews

-

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.80
BayesDel_addAF	Pathogenic	0.44	D
BayesDel_noAF	Pathogenic	0.40
Cadd	Pathogenic	29
Dann	Uncertain	0.99
DEOGEN2	Benign	0.24	T;T;.;T;T
Eigen	Pathogenic	0.83
Eigen_PC	Pathogenic	0.83
FATHMM_MKL	Pathogenic	0.99	D
M_CAP	Pathogenic	0.34	D
MetaRNN	Pathogenic	0.89	D;D;D;D;D
MetaSVM	Uncertain	0.57	D
MutationAssessor	Pathogenic	3.1	M;M;M;M;M
MutationTaster	Benign	1.0	D;D
PrimateAI	Benign	0.45	T
Polyphen		1.0	D;D;D;D;D
Vest4		0.93, 0.89, 0.93
MutPred		0.60		Gain of helix (P = 0.0349);Gain of helix (P = 0.0349);Gain of helix (P = 0.0349);Gain of helix (P = 0.0349);Gain of helix (P = 0.0349);
MVP		0.86
MPC		1.2
ClinPred		1.0	D
GERP RS		5.8
Varity_R		0.87
gMVP		0.95

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

Other links and lift over

dbSNP: rs797045192; hg19: chr20-746246;