rs200965114

chr17-80214335-G-Achr17-80214335-G-C

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 2P and 16B. PM2 BP4_Strong BP6_Very_Strong BS1

The NM_000199.5(SGSH):c.507-7C>T variant causes a splice region, splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000309 in 1,610,910 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.00054 (0 hom., cov: 33)
  • Exomes 𝑓: 0.00028 (0 hom.)
• Consequence: SGSH NM_000199.5 splice_region, splice_polypyrimidine_tract, intron
• Scores: Splicing: ADA: 0.00003243
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -1.48

Genes affected

SGSH (HGNC:10818): (N-sulfoglucosamine sulfohydrolase) This gene encodes the enzyme sulfamidase; one of several enzymes involved in the lysosomal degradation of heparan sulfate. Mutations in this gene are associated with the lysosomal storage disease mucopolysaccaridosis IIIA, also known as Sanfilippo syndrome A, which results from impaired degradation of heparan sulfate. Transcripts of varying sizes have been reported but their biological validity has not been determined. [provided by RefSeq, Jun 2017]

CARD14 (HGNC:16446): (caspase recruitment domain family member 14) This gene encodes a caspase recruitment domain-containing protein that is a member of the membrane-associated guanylate kinase (MAGUK) family of proteins. Members of this protein family are scaffold proteins that are involved in a diverse array of cellular processes including cellular adhesion, signal transduction and cell polarity control. This protein has been shown to specifically interact with BCL10, a protein known to function as a positive regulator of cell apoptosis and NF-kappaB activation. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Apr 2012]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.85).
• BP6: Variant 17-80214335-G-A is Benign according to our data. Variant chr17-80214335-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 255516.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.000545 (83/152362) while in subpopulation AMR AF= 0.00294 (45/15312). AF 95% confidence interval is 0.00226. There are 0 homozygotes in gnomad4. There are 39 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SGSH	NM_000199.5	c.507-7C>T		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant		ENST00000326317.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SGSH	ENST00000326317.11	c.507-7C>T		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant		1	NM_000199.5	P1

Frequencies

GnomAD3 genomes AF: 0.000545 AC: 83 AN: 152244 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000482

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00294

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000470

Gnomad OTH AF: 0.00191

GnomAD3 exomes AF: 0.000311 AC: 75 AN: 241174 Hom.: 0 AF XY: 0.000312 AC XY: 41 AN XY: 131532

Gnomad AFR exome AF: 0.000128

Gnomad AMR exome AF: 0.000728

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000406

Gnomad OTH exome AF: 0.000842

GnomAD4 exome AF: 0.000284 AC: 414 AN: 1458548 Hom.: 0 Cov.: 34 AF XY: 0.000272 AC XY: 197 AN XY: 725176

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.000896

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.000126

Gnomad4 SAS exome AF: 0.0000464

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000303

Gnomad4 OTH exome AF: 0.000448

GnomAD4 genome AF: 0.000545 AC: 83 AN: 152362 Hom.: 0 Cov.: 33 AF XY: 0.000523 AC XY: 39 AN XY: 74510

Gnomad4 AFR AF: 0.0000481

Gnomad4 AMR AF: 0.00294

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000470

Gnomad4 OTH AF: 0.00189

Alfa AF: 0.000379 Hom.: 1

Bravo AF: 0.000880

EpiCase AF: 0.000873

EpiControl AF: 0.000474

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

-

- -

Mucopolysaccharidosis, MPS-III-A Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Jan 29, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.85
Cadd	Benign	0.098
Dann	Benign	0.57

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000032
dbscSNV1_RF	Benign	0.0
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

Publications

LitVar

Other links and lift over

dbSNP: rs200965114; hg19: chr17-78188134;