20-3227844-C-G

Variant names:

• chr20-3227844-C-G
• NM_001174089.2:c.2571G>C
• SLC4A11 p.Leu857Leu

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_001174089.2(SLC4A11):​c.2571G>C​(p.Leu857Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. L857L) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: SLC4A11 NM_001174089.2 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.125
• 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, PanelApp Australia, Labcorp Genetics (formerly Invitae), Orphanet
• corneal dystrophy-perceptive deafness syndrome

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

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.39).
• BP7: Synonymous conserved (PhyloP=0.125 with no splicing effect.

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.2571G>C	p.Leu857Leu	synonymous	Exon 20 of 20	NP_001167560.1	Q8NBS3-3
	SLC4A11	NM_001174090.2		c.2700G>C	p.Leu900Leu	synonymous	Exon 20 of 20	NP_001167561.1	Q8NBS3-4
	SLC4A11	NM_032034.4		c.2619G>C	p.Leu873Leu	synonymous	Exon 19 of 19	NP_114423.1	Q8NBS3-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC4A11	ENST00000642402.1	MANE Select	c.2571G>C	p.Leu857Leu	synonymous	Exon 20 of 20	ENSP00000493503.1	Q8NBS3-3
	SLC4A11	ENST00000380056.7	TSL:1	c.2619G>C	p.Leu873Leu	synonymous	Exon 19 of 19	ENSP00000369396.3	Q8NBS3-1
	SLC4A11	ENST00000380059.7	TSL:2	c.2700G>C	p.Leu900Leu	synonymous	Exon 20 of 20	ENSP00000369399.3	Q8NBS3-4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.39
CADD	Benign	5.8
DANN	Benign	0.70
PhyloP100		0.13

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr20-3208490;