rs121918236

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3PP5

The NM_001177316.2(SLC34A3):​c.846G>A​(p.Pro282Pro) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000416 in 1,612,238 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. P282P) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000042 ( 0 hom. )

Consequence

SLC34A3
NM_001177316.2 splice_region, synonymous

Scores

2
Splicing: ADA: 0.9913
2

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:7U:1

Conservation

PhyloP100: 0.476

Publications

9 publications found
Variant links:
Genes affected
SLC34A3 (HGNC:20305): (solute carrier family 34 member 3) This gene encodes a member of SLC34A transporter family of proteins, and is expressed primarily in the kidney. It is involved in transporting phosphate into cells via sodium cotransport in the renal brush border membrane, and contributes to the maintenance of inorganic phosphate concentration in the kidney. Mutations in this gene are associated with hereditary hypophosphatemic rickets with hypercalciuria. Alternatively spliced transcript variants varying in the 5' UTR have been found for this gene.[provided by RefSeq, Apr 2010]
SLC34A3 Gene-Disease associations (from GenCC):
  • hereditary hypophosphatemic rickets with hypercalciuria
    Inheritance: SD, AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

PM2
Very rare variant in population databases, with high coverage;
PP3
Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.
PP5
Variant 9-137233722-G-A is Pathogenic according to our data. Variant chr9-137233722-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 1429.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SLC34A3NM_001177316.2 linkc.846G>A p.Pro282Pro splice_region_variant, synonymous_variant Exon 8 of 13 ENST00000673835.1 NP_001170787.2 Q8N130

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SLC34A3ENST00000673835.1 linkc.846G>A p.Pro282Pro splice_region_variant, synonymous_variant Exon 8 of 13 NM_001177316.2 ENSP00000501114.1 Q8N130
SLC34A3ENST00000361134.2 linkc.846G>A p.Pro282Pro splice_region_variant, synonymous_variant Exon 8 of 13 2 ENSP00000355353.2 Q8N130
SLC34A3ENST00000538474.5 linkc.846G>A p.Pro282Pro splice_region_variant, synonymous_variant Exon 8 of 13 5 ENSP00000442397.1 Q8N130
SLC34A3ENST00000673865.1 linkc.846G>A p.Pro282Pro splice_region_variant, synonymous_variant Exon 8 of 10 ENSP00000501101.1 A0A669KB63

Frequencies

GnomAD3 genomes
AF:
0.0000395
AC:
6
AN:
152028
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.000193
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000589
Gnomad OTH
AF:
0.000478
GnomAD2 exomes
AF:
0.0000241
AC:
6
AN:
249112
AF XY:
0.0000221
show subpopulations
Gnomad AFR exome
AF:
0.0000624
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000546
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000357
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000418
AC:
61
AN:
1460092
Hom.:
0
Cov.:
36
AF XY:
0.0000413
AC XY:
30
AN XY:
726340
show subpopulations
African (AFR)
AF:
0.0000299
AC:
1
AN:
33468
American (AMR)
AF:
0.00
AC:
0
AN:
44708
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26128
East Asian (EAS)
AF:
0.0000252
AC:
1
AN:
39696
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86238
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
52080
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5634
European-Non Finnish (NFE)
AF:
0.0000441
AC:
49
AN:
1111798
Other (OTH)
AF:
0.000166
AC:
10
AN:
60342
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.470
Heterozygous variant carriers
0
4
8
12
16
20
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
4
8
12
16
20
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.0000394
AC:
6
AN:
152146
Hom.:
0
Cov.:
32
AF XY:
0.0000538
AC XY:
4
AN XY:
74372
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41508
American (AMR)
AF:
0.00
AC:
0
AN:
15296
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.000194
AC:
1
AN:
5160
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4822
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10610
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.0000589
AC:
4
AN:
67960
Other (OTH)
AF:
0.000473
AC:
1
AN:
2114
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.517
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.0000946
Hom.:
0
Bravo
AF:
0.0000227
Asia WGS
AF:
0.000289
AC:
1
AN:
3478
EpiCase
AF:
0.0000545
EpiControl
AF:
0.00

ClinVar

Significance: Pathogenic/Likely pathogenic
Submissions summary: Pathogenic:7Uncertain:1
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Autosomal recessive hypophosphatemic bone disease Pathogenic:6Uncertain:1
Feb 01, 2006
OMIM
Significance:Pathogenic
Review Status:no assertion criteria provided
Collection Method:literature only

- -

Sep 30, 2017
Institute of Human Genetics Munich, TUM University Hospital
Significance:Pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

May 01, 2025
Rare Kidney Stone Consortium and the Mayo Clinic Hyperoxaluria Center, Mayo Clinic
Significance:Likely pathogenic
Review Status:criteria provided, single submitter
Collection Method:research

ACMG: PS1, PP3, PP4 -

Aug 11, 2021
Laboratory of Functional Genomics, Research Centre for Medical Genetics
Significance:Likely pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing;in vitro

Synonymous variant c.846G>A in SLC34A3 could be classified as likely pathogenic variant according to ACMG criteria (PM2, PS3, PM3). The variant vas observed in 12 y.o. female patient with hypophosphatemic rickets with hypercalciuria in compound heterozygous state with c.1304delG variant in SLC34A3 gene. -

Jul 21, 2020
Revvity Omics, Revvity
Significance:Uncertain significance
Review Status:flagged submission
Collection Method:clinical testing

- -

Jun 20, 2019
Hadassah Hebrew University Medical Center
Significance:Likely pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Jun 14, 2024
Fulgent Genetics, Fulgent Genetics
Significance:Likely pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

not provided Pathogenic:1
Oct 24, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Likely pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change affects codon 282 of the SLC34A3 mRNA. It is a 'silent' change, meaning that it does not change the encoded amino acid sequence of the SLC34A3 protein. This variant also falls at the last nucleotide of exon 8, which is part of the consensus splice site for this exon. This variant is present in population databases (rs121918236, gnomAD 0.005%). This variant has been observed in individual(s) with hypophosphatemic rickets with hypercalciuria (PMID: 16358215, 31672324, 33223529, 34805638). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 1429). Variants that disrupt the consensus splice site are a relatively common cause of aberrant splicing (PMID: 17576681, 9536098). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.81
CADD
Benign
19
DANN
Benign
0.82
PhyloP100
0.48
Mutation Taster
=52/48
disease causing (ClinVar)

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
0.99
dbscSNV1_RF
Pathogenic
0.94
SpliceAI score (max)
0.72
Details are displayed if max score is > 0.2
DS_DL_spliceai
0.72
Position offset: 0

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs121918236; hg19: chr9-140128174; API