chr8-42416877-G-A

Variant names:

• chr8-42416877-G-A
• rs575143642
• NM_001257180.2:c.*926C>T

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The NM_001257180.2(SLC20A2):​c.*926C>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000661 in 152,810 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.00066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0020 (0 hom.)
• Consequence: SLC20A2 NM_001257180.2 3_prime_UTR
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -4.13
• Publications: 0 publications found

Genes affected

SLC20A2 (HGNC:10947): (solute carrier family 20 member 2) This gene encodes a member of the inorganic phosphate transporter family. The encoded protein is a type 3 sodium-dependent phosphate symporter that plays an important role in phosphate homeostasis by mediating cellular phosphate uptake. The encoded protein also confers susceptibility to viral infection as a gamma-retroviral receptor. Mutations in this gene may play a role in familial idiopathic basal ganglia calcification. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Mar 2012]

SLC20A2 Gene-Disease associations (from GenCC):

• basal ganglia calcification, idiopathic, 1

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), PanelApp Australia
• bilateral striopallidodentate calcinosis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.98).
• BP6: Variant 8-42416877-G-A is Benign according to our data. Variant chr8-42416877-G-A is described in ClinVar as Benign. ClinVar VariationId is 363054.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.000657 (100/152302) while in subpopulation NFE AF = 0.000838 (57/68020). AF 95% confidence interval is 0.000664. There are 0 homozygotes in GnomAd4. There are 54 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
• BS2: High AC in GnomAd4 at 100 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001257180.2. 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
	SLC20A2	NM_001257180.2	MANE Select	c.*926C>T		3_prime_UTR	Exon 11 of 11	NP_001244109.1	A0A384MR38
	SLC20A2	NM_001257181.2		c.*926C>T		3_prime_UTR	Exon 11 of 11	NP_001244110.1	Q08357
	SLC20A2	NM_006749.5		c.*926C>T		3_prime_UTR	Exon 11 of 11	NP_006740.1	Q08357

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC20A2	ENST00000520262.6	TSL:2 MANE Select	c.*926C>T		3_prime_UTR	Exon 11 of 11	ENSP00000429754.1	Q08357
	SLC20A2	ENST00000342228.7	TSL:1	c.*926C>T		3_prime_UTR	Exon 11 of 11	ENSP00000340465.3	Q08357
	SLC20A2	ENST00000965915.1		c.*926C>T		3_prime_UTR	Exon 12 of 12	ENSP00000635974.1

Frequencies

GnomAD3 genomes AF: 0.000664 AC: 101 AN: 152184 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000265

Gnomad AMI AF: 0.0208

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00104

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000853

Gnomad OTH AF: 0.000478

GnomAD4 exome AF: 0.00197 AC: 1 AN: 508 Hom.: 0 Cov.: 0 AF XY: 0.00313 AC XY: 1 AN XY: 320

African (AFR) AF: 0.00 AC: 0 AN: 2

American (AMR) AF: 0.00 AC: 0 AN: 2

Ashkenazi Jewish (ASJ) AC: 0 AN: 0

East Asian (EAS) AF: 0.00 AC: 0 AN: 4

South Asian (SAS) AC: 0 AN: 0

European-Finnish (FIN) AF: 0.00226 AC: 1 AN: 442

Middle Eastern (MID) AC: 0 AN: 0

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 44

Other (OTH) AF: 0.00 AC: 0 AN: 14

GnomAD4 genome AF: 0.000657 AC: 100 AN: 152302 Hom.: 0 Cov.: 32 AF XY: 0.000725 AC XY: 54 AN XY: 74478

African (AFR) AF: 0.000265 AC: 11 AN: 41582

American (AMR) AF: 0.00 AC: 0 AN: 15280

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5186

South Asian (SAS) AF: 0.000207 AC: 1 AN: 4822

European-Finnish (FIN) AF: 0.00104 AC: 11 AN: 10620

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.000838 AC: 57 AN: 68020

Other (OTH) AF: 0.000473 AC: 1 AN: 2116

Alfa AF: 0.000555 Hom.: 0

Bravo AF: 0.000620

ClinVar

ClinVar submissions

Significance: Benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	Idiopathic basal ganglia calcification 1 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.98
CADD	Benign	0.067
DANN	Benign	0.46
PhyloP100		-4.1

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: rs575143642; hg19: chr8-42274395; COSMIC: COSV105903968; COSMIC: COSV105903968;