NM_021977.4:c.169G>A

Variant names:

• chr6-160348588-G-A
• rs1177376771
• NM_021977.4:c.169G>A

Variant summary

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

The NM_021977.4(SLC22A3):​c.169G>A​(p.Ala57Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000263 in 1,522,170 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. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0000015 (0 hom.)
• Consequence: SLC22A3 NM_021977.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.48
• Publications: 0 publications found

Genes affected

SLC22A3 (HGNC:10967): (solute carrier family 22 member 3) Polyspecific organic cation transporters in the liver, kidney, intestine, and other organs are critical for elimination of many endogenous small organic cations as well as a wide array of drugs and environmental toxins. This gene is one of three similar cation transporter genes located in a cluster on chromosome 6. The encoded protein contains twelve putative transmembrane domains and is a plasma integral membrane protein. [provided by RefSeq, Jul 2008]

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=0.12815917).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_021977.4. 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
	SLC22A3	NM_021977.4	MANE Select	c.169G>A	p.Ala57Thr	missense	Exon 1 of 11	NP_068812.1	O75751

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC22A3	ENST00000275300.3	TSL:1 MANE Select	c.169G>A	p.Ala57Thr	missense	Exon 1 of 11	ENSP00000275300.2	O75751
	SLC22A3	ENST00000855214.1		c.169G>A	p.Ala57Thr	missense	Exon 1 of 12	ENSP00000525273.1
	SLC22A3	ENST00000855213.1		c.169G>A	p.Ala57Thr	missense	Exon 1 of 7	ENSP00000525272.1

Frequencies

GnomAD3 genomes AF: 0.0000132 AC: 2 AN: 151994 Hom.: 0 Cov.: 33

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: 0.00637

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000146 AC: 2 AN: 1370068 Hom.: 0 Cov.: 65 AF XY: 0.00000295 AC XY: 2 AN XY: 678308

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

African (AFR) AF: 0.00 AC: 0 AN: 28368

American (AMR) AF: 0.00 AC: 0 AN: 34380

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24350

East Asian (EAS) AF: 0.00 AC: 0 AN: 32318

South Asian (SAS) AF: 0.0000128 AC: 1 AN: 77986

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 35704

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4024

European-Non Finnish (NFE) AF: 9.29e-7 AC: 1 AN: 1075990

Other (OTH) AF: 0.00 AC: 0 AN: 56948

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.00666416), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152102 Hom.: 0 Cov.: 33 AF XY: 0.0000134 AC XY: 1 AN XY: 74390

African (AFR) AF: 0.00 AC: 0 AN: 41530

American (AMR) AF: 0.00 AC: 0 AN: 15290

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5164

South Asian (SAS) AF: 0.00 AC: 0 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10556

Middle Eastern (MID) AF: 0.00685 AC: 2 AN: 292

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67946

Other (OTH) AF: 0.00 AC: 0 AN: 2116

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.094
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.58
CADD	Benign	16
DANN	Uncertain	0.99
DEOGEN2	Benign	0.11	T
Eigen	Benign	-0.83
Eigen_PC	Benign	-0.82
FATHMM_MKL	Benign	0.32	N
LIST_S2	Benign	0.58	T
M_CAP	Benign	0.025	T
MetaRNN	Benign	0.13	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.5	L
PhyloP100		2.5
PrimateAI	Uncertain	0.76	T
PROVEAN	Benign	-1.9	N
REVEL	Benign	0.097
Sift	Benign	0.12	T
Sift4G	Benign	0.17	T
Polyphen		0.0080	B
Vest4		0.13
MutPred		0.49		Gain of glycosylation at A57 (P = 0.0174)
MVP		0.53
MPC		0.36
ClinPred		0.26	T
GERP RS		1.7
PromoterAI		-0.023	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.6
Varity_R		0.052
gMVP		0.22
Mutation Taster		=94/6	polymorphism

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: rs1177376771; hg19: chr6-160769620; COSMIC: COSV105109164;