1-67004361-A-T

Variant names:

• chr1-67004361-A-T
• NM_015139.3:c.1047T>A
• SLC35D1 p.Ile349Ile

Variant summary

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

The NM_015139.3(SLC35D1):​c.1047T>A​(p.Ile349Ile) 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. I349I) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SLC35D1 NM_015139.3 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.323
• Publications: 0 publications found

Genes affected

SLC35D1 (HGNC:20800): (solute carrier family 35 member D1) Glycosylation of cellular glycoconjugates occurs in the endoplasmic reticulum (ER) and Golgi compartment, and requires transport of nucleotide sugars from the cytosol into the lumen of the ER and Golgi by specific transporters. The protein encoded by this gene resides in the ER, and transports both UDP-glucuronic acid (UDP-GlcA) and UDP-N-acetylgalactosamine (UDP-GalNAc) from the cytoplasm to the ER lumen. It may participate in glucuronidation and/or chondroitin sulfate biosynthesis. Mutations in this gene are associated with Schneckenbecken dysplasia.[provided by RefSeq, Sep 2009]

SLC35D1 Gene-Disease associations (from GenCC):

• schneckenbecken dysplasia

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

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=-0.83).
• BP7: Synonymous conserved (PhyloP=-0.323 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015139.3. 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
	SLC35D1	NM_015139.3	MANE Select	c.1047T>A	p.Ile349Ile	synonymous	Exon 12 of 12	NP_055954.1	Q9NTN3-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC35D1	ENST00000235345.6	TSL:1 MANE Select	c.1047T>A	p.Ile349Ile	synonymous	Exon 12 of 12	ENSP00000235345.5	Q9NTN3-1
	SLC35D1	ENST00000901512.1		c.1128T>A	p.Ile376Ile	synonymous	Exon 13 of 13	ENSP00000571571.1
	SLC35D1	ENST00000901514.1		c.1044T>A	p.Ile348Ile	synonymous	Exon 12 of 12	ENSP00000571573.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	2.5
DANN	Benign	0.76
PhyloP100		-0.32
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

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

Other links and lift over

hg19: chr1-67470044;