22-32218591-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_014227.3(SLC5A4):c.1903T>C(p.Ser635Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,870 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: SLC5A4 NM_014227.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.206

Genes affected

SLC5A4 (HGNC:11039): (solute carrier family 5 member 4) Predicted to enable glucose:sodium symporter activity and proton transmembrane transporter activity. Predicted to be involved in sodium ion transport. Predicted to act upstream of or within proton transmembrane transport. Predicted to be active in plasma membrane. Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

SLC5A4-AS1 (HGNC:53163): (SLC5A4 antisense RNA 1)

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.12225294).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SLC5A4	NM_014227.3	c.1903T>C	p.Ser635Pro	missense_variant	15/15	ENST00000266086.6
SLC5A4-AS1	NR_149072.1	n.274+11315A>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SLC5A4	ENST00000266086.6	c.1903T>C	p.Ser635Pro	missense_variant	15/15	1	NM_014227.3	P1
SLC5A4-AS1	ENST00000452181.2	n.274+11315A>G		intron_variant, non_coding_transcript_variant		5
SLC5A4-AS1	ENST00000434942.2	n.225-10499A>G		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461870 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727238

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 31

Alfa AF: 0.0000712 Hom.: 0

Bravo AF: 0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 26, 2023

The c.1903T>C (p.S635P) alteration is located in exon 15 (coding exon 15) of the SLC5A4 gene. This alteration results from a T to C substitution at nucleotide position 1903, causing the serine (S) at amino acid position 635 to be replaced by a proline (P). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.072
BayesDel_addAF	Benign	-0.12	T
BayesDel_noAF	Benign	-0.41
Cadd	Benign	14
Dann	Uncertain	0.98
DEOGEN2	Benign	0.0076	T
Eigen	Benign	-0.73
Eigen_PC	Benign	-0.67
FATHMM_MKL	Benign	0.17	N
LIST_S2	Benign	0.48	T
M_CAP	Benign	0.015	T
MetaRNN	Benign	0.12	T
MetaSVM	Benign	-0.74	T
MutationAssessor	Benign	0.20	N
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.37	T
PROVEAN	Benign	-1.2	N
REVEL	Benign	0.18
Sift	Benign	0.042	D
Sift4G	Benign	0.14	T
Polyphen		0.050	B
Vest4		0.13
MutPred		0.53		Gain of glycosylation at S635 (P = 0.0136);
MVP		0.45
MPC		0.20
ClinPred		0.23	T
GERP RS		3.2
Varity_R		0.20
gMVP		0.64

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

Other links and lift over

dbSNP: rs1398391200; hg19: chr22-32614578;