20-3227874-C-A

Variant names:

• chr20-3227874-C-A
• rs765705738
• NM_001174089.2:c.2559-18G>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001174089.2(SLC4A11):​c.2559-18G>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,458,868 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: SLC4A11 NM_001174089.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.466
• Publications: 0 publications found

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]

SLC4A11 Gene-Disease associations (from GenCC):

• corneal dystrophy, Fuchs endothelial, 4

  Inheritance: AD Classification: STRONG, LIMITED Submitted by: PanelApp Australia, G2P, Labcorp Genetics (formerly Invitae)
• congenital hereditary endothelial dystrophy of cornea

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), PanelApp Australia, Orphanet
• corneal dystrophy-perceptive deafness syndrome

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)
• Fuchs' endothelial dystrophy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.88).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001174089.2. 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
	SLC4A11	NM_001174089.2	MANE Select	c.2559-18G>T		intron	N/A	NP_001167560.1	Q8NBS3-3
	SLC4A11	NM_001174090.2		c.2688-18G>T		intron	N/A	NP_001167561.1	Q8NBS3-4
	SLC4A11	NM_032034.4		c.2607-18G>T		intron	N/A	NP_114423.1	Q8NBS3-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC4A11	ENST00000642402.1	MANE Select	c.2559-18G>T		intron	N/A	ENSP00000493503.1	Q8NBS3-3
	SLC4A11	ENST00000380056.7	TSL:1	c.2607-18G>T		intron	N/A	ENSP00000369396.3	Q8NBS3-1
	SLC4A11	ENST00000380059.7	TSL:2	c.2688-18G>T		intron	N/A	ENSP00000369399.3	Q8NBS3-4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000409 AC: 1 AN: 244204 AF XY: 0.00000756

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000906

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1458868 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 725458

African (AFR) AF: 0.00 AC: 0 AN: 33458

American (AMR) AF: 0.00 AC: 0 AN: 44474

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26094

East Asian (EAS) AF: 0.00 AC: 0 AN: 39650

South Asian (SAS) AF: 0.00 AC: 0 AN: 85912

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52254

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5752

European-Non Finnish (NFE) AF: 9.00e-7 AC: 1 AN: 1110986

Other (OTH) AF: 0.00 AC: 0 AN: 60288

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
CADD	Benign	7.1
DANN	Benign	0.54
PhyloP100		0.47

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: rs765705738; hg19: chr20-3208520;