6-87477486-C-T

Variant names:

• chr6-87477486-C-T
• rs762355511
• NM_006416.5:c.141C>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Moderate BP6 BP7

The NM_006416.5(SLC35A1):​c.141C>T​(p.Ala47Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000103 in 1,461,760 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (no stars).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.000010 (0 hom.)
• Consequence: SLC35A1 NM_006416.5 synonymous
• Clinical Significance: Likely benign no assertion criteria provided B:1
• Conservation: PhyloP100: -1.44
• Publications: 0 publications found

Genes affected

SLC35A1 (HGNC:11021): (solute carrier family 35 member A1) The protein encoded by this gene is found in the membrane of the Golgi apparatus, where it transports nucleotide sugars into the Golgi. One such nucleotide sugar is CMP-sialic acid, which is imported into the Golgi by the encoded protein and subsequently glycosylated. Defects in this gene are a cause of congenital disorder of glycosylation type 2F (CDG2F). Two transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Dec 2009]

SLC35A1 Gene-Disease associations (from GenCC):

• SLC35A1-congenital disorder of glycosylation

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, G2P

ENSG00000213204 (HGNC:):

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=-0.36).
• BP6: Variant 6-87477486-C-T is Benign according to our data. Variant chr6-87477486-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 3043390.Status of the report is no_assertion_criteria_provided, 0 stars.
• BP7: Synonymous conserved (PhyloP=-1.44 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006416.5. 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
	SLC35A1	NM_006416.5	MANE Select	c.141C>T	p.Ala47Ala	synonymous	Exon 2 of 8	NP_006407.1	P78382-1
	SLC35A1	NM_001168398.2		c.141C>T	p.Ala47Ala	synonymous	Exon 2 of 7	NP_001161870.1	P78382-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC35A1	ENST00000369552.9	TSL:1 MANE Select	c.141C>T	p.Ala47Ala	synonymous	Exon 2 of 8	ENSP00000358565.4	P78382-1
	SLC35A1	ENST00000369556.7	TSL:1	c.141C>T	p.Ala47Ala	synonymous	Exon 2 of 7	ENSP00000358569.3	P78382-2
	ENSG00000213204	ENST00000507897.5	TSL:2	n.*185C>T		non_coding_transcript_exon	Exon 14 of 16	ENSP00000426769.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.0000199 AC: 5 AN: 251448 AF XY: 0.0000147

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: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000103 AC: 15 AN: 1461760 Hom.: 0 Cov.: 31 AF XY: 0.0000138 AC XY: 10 AN XY: 727180

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.0000224 AC: 1 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26130

East Asian (EAS) AF: 0.00 AC: 0 AN: 39678

South Asian (SAS) AF: 0.0000580 AC: 5 AN: 86242

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53412

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 0.00000809 AC: 9 AN: 1111942

Other (OTH) AF: 0.00 AC: 0 AN: 60390

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
-	-	1	SLC35A1-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.36
CADD	Benign	7.9
DANN	Benign	0.72
PhyloP100		-1.4
Mutation Taster		=287/13	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: rs762355511; hg19: chr6-88187204;