rs886038601

Variant names:

• chr13-23353890-G-A
• rs886038601
• NM_014363.6:c.2094-14C>T

Your query was ambiguous. Multiple possible variants found:

• chr13-23353890-G-A
• chr13-23353890-G-T

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 2P and 12B. PM2 BP4_Strong BP6_Very_Strong

The NM_014363.6(SACS):​c.2094-14C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000806 in 1,241,058 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 (★★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 8.1e-7 (0 hom.)
• Consequence: SACS NM_014363.6 intron
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -0.132
• Publications: 0 publications found

Genes affected

SACS (HGNC:10519): (sacsin molecular chaperone) This gene encodes the sacsin protein, which includes a UbL domain at the N-terminus, a DnaJ domain, and a HEPN domain at the C-terminus. The gene is highly expressed in the central nervous system, also found in skin, skeletal muscles and at low levels in the pancreas. This gene includes a very large exon spanning more than 12.8 kb. Mutations in this gene result in autosomal recessive spastic ataxia of Charlevoix-Saguenay (ARSACS), a neurodegenerative disorder characterized by early-onset cerebellar ataxia with spasticity and peripheral neuropathy. The authors of a publication on the effects of siRNA-mediated sacsin knockdown concluded that sacsin protects against mutant ataxin-1 and suggest that "the large multi-domain sacsin protein is able to recruit Hsp70 chaperone action and has the potential to regulate the effects of other ataxia proteins" (Parfitt et al., PubMed: 19208651). A pseudogene associated with this gene is located on chromosome 11. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, May 2013]

SACS Gene-Disease associations (from GenCC):

• Charlevoix-Saguenay spastic ataxia

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), Myriad Women’s Health

ACMG classification

Our verdict: Benign. The variant received -10 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).
• BP6: Variant 13-23353890-G-A is Benign according to our data. Variant chr13-23353890-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 260395.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014363.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SACS	NM_014363.6	MANE Select	c.2094-14C>T		intron	N/A	NP_055178.3
	SACS	NM_001437336.1		c.2094-14C>T		intron	N/A	NP_001424265.1
	SACS	NM_001278055.2		c.1653-14C>T		intron	N/A	NP_001264984.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SACS	ENST00000382292.9	TSL:5 MANE Select	c.2094-14C>T		intron	N/A	ENSP00000371729.3
	SACS	ENST00000455470.6	TSL:1	c.2094-14C>T		intron	N/A	ENSP00000406565.2
	SACS	ENST00000682944.1		c.2094-14C>T		intron	N/A	ENSP00000507173.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 8.06e-7 AC: 1 AN: 1241058 Hom.: 0 Cov.: 20 AF XY: 0.00000159 AC XY: 1 AN XY: 629036

African (AFR) AF: 0.00 AC: 0 AN: 29078

American (AMR) AF: 0.00 AC: 0 AN: 44432

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24834

East Asian (EAS) AF: 0.00 AC: 0 AN: 38600

South Asian (SAS) AF: 0.0000122 AC: 1 AN: 81724

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53292

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5392

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 910588

Other (OTH) AF: 0.00 AC: 0 AN: 53118

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions as Germline

Significance: Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	1	not specified (1)
-	-	1	Spastic paraplegia (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	2.8
DANN	Benign	0.26
PhyloP100		-0.13

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: rs886038601; hg19: chr13-23928029;