17-1575683-C-T

Variant names:

• chr17-1575683-C-T
• rs541726546
• NM_152346.3:c.1631G>A

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_152346.3(SLC43A2):​c.1631G>A​(p.Arg544Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000167 in 1,614,088 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. 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. R544L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000018 (0 hom.)
• Consequence: SLC43A2 NM_152346.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0580
• Publications: 1 publications found

Genes affected

SLC43A2 (HGNC:23087): (solute carrier family 43 member 2) This gene encodes a member of the L-amino acid transporter-3 or SLC43 family of transporters. The encoded protein mediates sodium-, chloride-, and pH-independent transport of L-isomers of neutral amino acids, including leucine, phenylalanine, valine and methionine. This protein may contribute to the transfer of amino acids across the placental membrane to the fetus. [provided by RefSeq, Mar 2016]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.07005352).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC43A2	NM_152346.3	c.1631G>A	p.Arg544Gln	missense_variant	Exon 14 of 14	ENST00000301335.10	NP_689559.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC43A2	ENST00000301335.10	c.1631G>A	p.Arg544Gln	missense_variant	Exon 14 of 14	1	NM_152346.3	ENSP00000301335.5
SLC43A2	ENST00000571650.5	c.1643G>A	p.Arg548Gln	missense_variant	Exon 15 of 15	1		ENSP00000461382.1
SLC43A2	ENST00000412517.3	c.1220G>A	p.Arg407Gln	missense_variant	Exon 10 of 10	2		ENSP00000408284.3

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152182 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000654

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: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000805 AC: 2 AN: 248310 AF XY: 0.00000742

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000290

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000901

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000178 AC: 26 AN: 1461788 Hom.: 0 Cov.: 31 AF XY: 0.0000138 AC XY: 10 AN XY: 727196

African (AFR) AF: 0.0000299 AC: 1 AN: 33474

American (AMR) AF: 0.00 AC: 0 AN: 44722

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

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53398

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5754

European-Non Finnish (NFE) AF: 0.0000216 AC: 24 AN: 1111968

Other (OTH) AF: 0.0000166 AC: 1 AN: 60390

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152300 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74474

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 41554

American (AMR) AF: 0.0000653 AC: 1 AN: 15304

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5180

South Asian (SAS) AF: 0.00 AC: 0 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10628

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68022

Other (OTH) AF: 0.00 AC: 0 AN: 2110

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000113

ExAC AF: 0.0000165 AC: 2

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.070
BayesDel_addAF	Benign	-0.12	T
BayesDel_noAF	Benign	-0.32
CADD	Benign	13
DANN	Uncertain	1.0
DEOGEN2	Benign	0.28	T;.;.
Eigen	Benign	-0.50
Eigen_PC	Benign	-0.52
FATHMM_MKL	Benign	0.16	N
M_CAP	Benign	0.063	D
MetaRNN	Benign	0.070	T;T;T
MetaSVM	Benign	-0.64	T
MutationAssessor	Uncertain	2.3	M;.;.
PhyloP100		0.058
PrimateAI	Benign	0.26	T
PROVEAN	Benign	-1.2	N;.;N
REVEL	Benign	0.13
Sift	Benign	0.14	T;.;T
Sift4G	Benign	0.080	T;T;T
Polyphen		0.27	B;P;.
Vest4		0.11
MutPred		0.34		Gain of disorder (P = 0.15);.;.;
MVP		0.82
MPC		0.54
ClinPred		0.27	T
GERP RS		1.1
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.047
gMVP		0.43
Mutation Taster		=94/6	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs541726546; hg19: chr17-1478977;