rs767708918

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 4P and 5B. PVS1_ModeratePM2BP6BS1

The NM_020708.5(SLC12A5):​c.3126-3dupC variant causes a splice acceptor, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00007 in 1,613,988 control chromosomes in the GnomAD database, including 1 homozygotes. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00044 ( 1 hom., cov: 32)
Exomes 𝑓: 0.000031 ( 0 hom. )

Consequence

SLC12A5
NM_020708.5 splice_acceptor, intron

Scores

Not classified

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:2

Conservation

PhyloP100: 3.48
Variant links:
Genes affected
SLC12A5 (HGNC:13818): (solute carrier family 12 member 5) K-Cl cotransporters are proteins that lower intracellular chloride concentrations below the electrochemical equilibrium potential. The protein encoded by this gene is an integral membrane K-Cl cotransporter that can function in either a net efflux or influx pathway, depending on the chemical concentration gradients of potassium and chloride. The encoded protein can act as a homomultimer, or as a heteromultimer with other K-Cl cotransporters, to maintain chloride homeostasis in neurons. Alternative splicing results in two transcript variants encoding different isoforms. [provided by RefSeq, Sep 2008]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PVS1
Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.039988063 fraction of the gene. Cryptic splice site detected, with MaxEntScore 9.4, offset of 0 (no position change), new splice context is: ctcctccttcctgccgccAGgaa. Cryptic site results in inframe change. If cryptic site found is not functional and variant results in exon loss, it results in frameshift change.
PM2
Very rare variant in population databases, with high coverage;
BP6
Variant 20-46057166-G-GC is Benign according to our data. Variant chr20-46057166-G-GC is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 542328.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=1}.
BS1
Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00044 (67/152264) while in subpopulation AFR AF= 0.00152 (63/41556). AF 95% confidence interval is 0.00122. There are 1 homozygotes in gnomad4. There are 28 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SLC12A5NM_020708.5 linkc.3126-3dupC splice_acceptor_variant, intron_variant Intron 24 of 25 ENST00000243964.7 NP_065759.1 Q9H2X9-2
SLC12A5NM_001134771.2 linkc.3195-3dupC splice_acceptor_variant, intron_variant Intron 24 of 25 NP_001128243.1 Q9H2X9-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SLC12A5ENST00000243964.7 linkc.3126-4_3126-3insC splice_region_variant, intron_variant Intron 24 of 25 1 NM_020708.5 ENSP00000243964.4 Q9H2X9-2

Frequencies

GnomAD3 genomes
AF:
0.000434
AC:
66
AN:
152146
Hom.:
1
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00150
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000196
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:
0.000478
GnomAD3 exomes
AF:
0.000112
AC:
28
AN:
250824
Hom.:
0
AF XY:
0.000103
AC XY:
14
AN XY:
135770
show subpopulations
Gnomad AFR exome
AF:
0.00143
Gnomad AMR exome
AF:
0.000116
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000882
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000315
AC:
46
AN:
1461724
Hom.:
0
Cov.:
31
AF XY:
0.0000261
AC XY:
19
AN XY:
727146
show subpopulations
Gnomad4 AFR exome
AF:
0.00105
Gnomad4 AMR exome
AF:
0.000134
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.0000828
GnomAD4 genome
AF:
0.000440
AC:
67
AN:
152264
Hom.:
1
Cov.:
32
AF XY:
0.000376
AC XY:
28
AN XY:
74448
show subpopulations
Gnomad4 AFR
AF:
0.00152
Gnomad4 AMR
AF:
0.000196
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.000473
Alfa
AF:
0.000214
Hom.:
0
Bravo
AF:
0.000623

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:2
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not specified Uncertain:1
Jun 30, 2022
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

Unlikely to be causative of SLC12A5-related epilepsy (AD) Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Developmental and epileptic encephalopathy, 34 Benign:1
Jan 27, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

SLC12A5-related disorder Benign:1
Dec 19, 2022
PreventionGenetics, part of Exact Sciences
Significance: Likely benign
Review Status: no assertion criteria provided
Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction

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

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs767708918; hg19: chr20-44685805; API