20-62656893-A-G

Position:

• chr20-62656893-A-G

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_016354.4(SLCO4A1):​c.439A>G​(p.Ser147Gly) 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 Uncertain significance (★).

• Frequency: Genomes: not found (cov: 34)
• Consequence: SLCO4A1 NM_016354.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.08

Genes affected

SLCO4A1 (HGNC:10953): (solute carrier organic anion transporter family member 4A1) Predicted to enable sodium-independent organic anion transmembrane transporter activity and thyroid hormone transmembrane transporter activity. Predicted to be involved in sodium-independent organic anion transport. Predicted to be located in plasma membrane. Predicted to be integral component of plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.961

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SLCO4A1	NM_016354.4	c.439A>G	p.Ser147Gly	missense_variant	2/12	ENST00000217159.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SLCO4A1	ENST00000217159.6	c.439A>G	p.Ser147Gly	missense_variant	2/12	1	NM_016354.4	P1
SLCO4A1	ENST00000370507.5	c.439A>G	p.Ser147Gly	missense_variant	1/11	1		P1
SLCO4A1	ENST00000497209.5	c.439A>G	p.Ser147Gly	missense_variant, NMD_transcript_variant	2/10	1

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD3 exomes AF: 0.00000434 AC: 1 AN: 230502 Hom.: 0 AF XY: 0.00000807 AC XY: 1 AN XY: 123882

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000549

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 36

GnomAD4 genome Cov.: 34

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 28, 2023

The c.439A>G (p.S147G) alteration is located in exon 2 (coding exon 1) of the SLCO4A1 gene. This alteration results from a A to G substitution at nucleotide position 439, causing the serine (S) at amino acid position 147 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	0.11
BayesDel_addAF	Benign	-0.029	T
BayesDel_noAF	Benign	-0.11
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.21	T;T
Eigen	Uncertain	0.27
Eigen_PC	Uncertain	0.31
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Uncertain	0.90	D;.
M_CAP	Uncertain	0.12	D
MetaRNN	Pathogenic	0.96	D;D
MetaSVM	Benign	-0.77	T
MutationAssessor	Benign	1.6	L;L
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.57	T
PROVEAN	Uncertain	-3.4	D;D
REVEL	Uncertain	0.41
Sift	Benign	0.17	T;T
Sift4G	Benign	0.092	T;T
Polyphen		0.53	P;P
Vest4		0.81
MutPred		0.89		Loss of stability (P = 0.0521);Loss of stability (P = 0.0521);
MVP		0.80
MPC		0.79
ClinPred		0.93	D
GERP RS		4.6
Varity_R		0.44
gMVP		0.93

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: rs768271436; hg19: chr20-61288245;