chr2-27200457-G-A

Variant names:

• chr2-27200457-G-A
• rs41288805
• NM_021095.4:c.1887C>T

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_021095.4(SLC5A6):​c.1887C>T​(p.Ile629Ile) 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.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SLC5A6 NM_021095.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0110
• Publications: 1 publications found

Genes affected

SLC5A6 (HGNC:11041): (solute carrier family 5 member 6) Enables biotin transmembrane transporter activity and pantothenate transmembrane transporter activity. Involved in anion transmembrane transport and transport across blood-brain barrier. Located in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

SLC5A6 Gene-Disease associations (from GenCC):

• neurodegeneration, infantile-onset, biotin-responsive

  Inheritance: AR Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics, PanelApp Australia
• peripheral motor neuropathy, childhood-onset, biotin-responsive

  Inheritance: AR Classification: STRONG Submitted by: PanelApp Australia
• inherited neurodegenerative disorder

  Inheritance: AR Classification: MODERATE Submitted by: Illumina

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.55).
• BP7: Synonymous conserved (PhyloP=-0.011 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_021095.4. 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
	SLC5A6	NM_021095.4	MANE Select	c.1887C>T	p.Ile629Ile	synonymous	Exon 17 of 17	NP_066918.2	Q9Y289
	SLC5A6	NR_028323.2		n.2695C>T		non_coding_transcript_exon	Exon 16 of 17

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC5A6	ENST00000310574.8	TSL:1 MANE Select	c.1887C>T	p.Ile629Ile	synonymous	Exon 17 of 17	ENSP00000310208.3	Q9Y289
	SLC5A6	ENST00000408041.5	TSL:1	c.1887C>T	p.Ile629Ile	synonymous	Exon 18 of 18	ENSP00000384853.1	Q9Y289
	SLC5A6	ENST00000892752.1		c.1920C>T	p.Ile640Ile	synonymous	Exon 17 of 17	ENSP00000562811.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.55
CADD	Benign	5.7
DANN	Benign	0.68
PhyloP100		-0.011
Mutation Taster		=100/0	polymorphism

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: rs41288805; hg19: chr2-27423325; COSMIC: COSV104633807; COSMIC: COSV104633807;