11-62977256-C-G

Variant names:

• chr11-62977256-C-G
• NM_153276.3:c.1493G>C

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PVS1_Moderate PM2

The NM_153278.3(SLC22A6):​c.1362-1G>C variant causes a splice acceptor, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,810 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: SLC22A6 NM_153278.3 splice_acceptor, intron
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.21
• Publications: 0 publications found

Genes affected

SLC22A6 (HGNC:10970): (solute carrier family 22 member 6) The protein encoded by this gene is involved in the sodium-dependent transport and excretion of organic anions, some of which are potentially toxic. The encoded protein is an integral membrane protein and may be localized to the basolateral membrane. Four transcript variants encoding four different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ENSG00000301851 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.07115385 fraction of the gene. Cryptic splice site detected, with MaxEntScore 8.5, offset of 23, new splice context is: tgtcactgtcctcctgccAGaga. Cryptic site results in frameshift change. If cryptic site found is not functional and variant results in exon loss, it results in inframe change.
• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_153278.3. 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
	SLC22A6	NM_153276.3	MANE Select	c.1493G>C	p.Ser498Thr	missense	Exon 9 of 10	NP_695008.1	Q4U2R8-2
	SLC22A6	NM_004790.5		c.1493G>C	p.Ser498Thr	missense	Exon 9 of 10	NP_004781.2
	SLC22A6	NM_153278.3		c.1362-1G>C		splice_acceptor intron	N/A	NP_695010.1	Q4U2R8-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC22A6	ENST00000360421.9	TSL:1 MANE Select	c.1493G>C	p.Ser498Thr	missense	Exon 9 of 10	ENSP00000353597.4	Q4U2R8-2
	SLC22A6	ENST00000377871.7	TSL:1	c.1493G>C	p.Ser498Thr	missense	Exon 9 of 10	ENSP00000367102.3	Q4U2R8-1
	SLC22A6	ENST00000421062.2	TSL:1	c.1362-1G>C		splice_acceptor intron	N/A	ENSP00000404441.2	Q4U2R8-4

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461810 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727214

⚠️ 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: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

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

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53340

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1112010

Other (OTH) AF: 0.00 AC: 0 AN: 60394

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 31

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	0.25
BayesDel_addAF	Pathogenic	0.35	D
BayesDel_noAF	Benign	-0.40
CADD	Benign	22
DANN	Uncertain	0.99
Eigen	Benign	0.099
Eigen_PC	Benign	0.11
FATHMM_MKL	Uncertain	0.93	D
M_CAP	Benign	0.064	D
PhyloP100		3.2
ClinPred		0.94	D
GERP RS		4.5
Varity_R		0.28
Mutation Taster		=19/81	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.080		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

hg19: chr11-62744728;