chr20-3230515-C-T

Position:

• chr20-3230515-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PM1 PM2 PP3_Strong PP5

The NM_001174089.2(SLC4A11):​c.1415G>A​(p.Arg472Lys) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 34)
• Consequence: SLC4A11 NM_001174089.2 missense, splice_region
• Scores: Splicing: ADA: 1.000
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 7.84

Genes affected

SLC4A11 (HGNC:16438): (solute carrier family 4 member 11) This gene encodes a voltage-regulated, electrogenic sodium-coupled borate cotransporter that is essential for borate homeostasis, cell growth and cell proliferation. Mutations in this gene have been associated with a number of endothelial corneal dystrophies including recessive corneal endothelial dystrophy 2, corneal dystrophy and perceptive deafness, and Fuchs endothelial corneal dystrophy. Multiple transcript variants encoding different isoforms have been described. [provided by RefSeq, Mar 2010]

ACMG classification

Verdict is Likely_pathogenic. Variant got 9 ACMG points.

• PM1: In a topological_domain Cytoplasmic (size 7) in uniprot entity S4A11_HUMAN there are 5 pathogenic changes around while only 0 benign (100%) in NM_001174089.2
• PM2: Very rare variant in population databases, with high coverage
• PP3: Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.
• PP5: Variant 20-3230515-C-T is Pathogenic according to our data. Variant chr20-3230515-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 1314.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr20-3230515-C-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SLC4A11	NM_001174089.2	c.1415G>A	p.Arg472Lys	missense_variant, splice_region_variant	12/20	ENST00000642402.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SLC4A11	ENST00000642402.1	c.1415G>A	p.Arg472Lys	missense_variant, splice_region_variant	12/20		NM_001174089.2	P2

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 38

GnomAD4 genome Cov.: 34

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Corneal dystrophy-perceptive deafness syndrome Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

May 01, 2007

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.34
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.33
CADD	Pathogenic	36
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.72	D;.;.;.;.;.;.
Eigen	Pathogenic	0.73
Eigen_PC	Pathogenic	0.71
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Uncertain	0.87	D;D;.;D;D;D;D
M_CAP	Uncertain	0.17	D
MetaRNN	Pathogenic	0.97	D;D;D;D;D;D;D
MetaSVM	Uncertain	0.39	D
MutationAssessor	Pathogenic	3.0	M;.;.;.;.;.;.
MutationTaster	Benign	1.0	A;A;A
PrimateAI	Uncertain	0.54	T
PROVEAN	Uncertain	-2.5	N;N;.;.;.;.;N
REVEL	Pathogenic	0.85
Sift	Benign	0.048	D;D;.;.;.;.;T
Sift4G	Benign	0.070	T;T;.;.;.;.;T
Polyphen		0.92	P;.;.;.;.;.;.
Vest4		0.97
MutPred		0.93		Gain of ubiquitination at R488 (P = 0.0203);.;.;.;.;.;.;
MVP		0.98
MPC		0.92
ClinPred		0.99	D
GERP RS		5.1
Varity_R		0.60
gMVP		0.96

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	1.0
SpliceAI score (max)		0.89		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.56		Position offset: -15
DS_DL_spliceai		0.89		Position offset: 0

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

Publications

LitVar

Other links and lift over

dbSNP: rs121909393; hg19: chr20-3211161;