18-45627041-C-G

Position:

• chr18-45627041-C-G

Variant summary

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

The NM_007163.4(SLC14A2):​c.415C>G​(p.Leu139Val) 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 1,461,316 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: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: SLC14A2 NM_007163.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.747

Genes affected

SLC14A2 (HGNC:10919): (solute carrier family 14 member 2) The protein encoded by this gene belongs to the urea transporter family. In mammalian cells, urea is the chief end product of nitrogen catabolism, and plays an important role in the urinary concentration mechanism. This protein is expressed in the inner medulla of the kidney, and mediates rapid transepithelial urea transport across the inner medullary collecting duct. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Sep 2011]

LOC105372093 (HGNC:):

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=0.106103).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SLC14A2	NM_007163.4	c.415C>G	p.Leu139Val	missense_variant	4/20	ENST00000255226.11
LOC105372093	XR_935423.3	n.1207+9782G>C		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SLC14A2	ENST00000255226.11	c.415C>G	p.Leu139Val	missense_variant	4/20	1	NM_007163.4	P1
SLC14A2	ENST00000586448.5	c.415C>G	p.Leu139Val	missense_variant	5/21	2		P1
SLC14A2	ENST00000323329.3	c.415C>G	p.Leu139Val	missense_variant, NMD_transcript_variant	4/11	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461316 Hom.: 0 Cov.: 33 AF XY: 0.00000275 AC XY: 2 AN XY: 726936

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.: 32

Bravo AF: 0.00000378

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

Feb 13, 2023

The c.415C>G (p.L139V) alteration is located in exon 4 (coding exon 3) of the SLC14A2 gene. This alteration results from a C to G substitution at nucleotide position 415, causing the leucine (L) at amino acid position 139 to be replaced by a valine (V). 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	0.11
BayesDel_addAF	Benign	-0.25	T
BayesDel_noAF	Benign	-0.59
CADD	Benign	0.97
DANN	Benign	0.92
DEOGEN2	Benign	0.20	T;T
Eigen	Benign	-1.3
Eigen_PC	Benign	-1.4
FATHMM_MKL	Benign	0.13	N
M_CAP	Benign	0.0097	T
MetaRNN	Benign	0.11	T;T
MetaSVM	Benign	-0.99	T
MutationAssessor	Uncertain	2.3	M;M
MutationTaster	Benign	1.0	N;N;N;N
PrimateAI	Benign	0.27	T
PROVEAN	Benign	0.020	.;N
REVEL	Benign	0.12
Sift	Benign	0.13	.;T
Sift4G	Uncertain	0.022	D;D
Polyphen		0.0030	B;B
Vest4		0.21
MutPred		0.59		Gain of sheet (P = 0.0149);Gain of sheet (P = 0.0149);
MVP		0.18
MPC		0.074
ClinPred		0.095	T
GERP RS		-8.2
Varity_R		0.079
gMVP		0.14

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: rs908077709; hg19: chr18-43207006;