Genetic Variant SLC26A1:c.*874C>G (chr4-987959-G-C) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 2P and 6B. PM2BP4_StrongBP6_Moderate

The NM_022042.4(SLC26A1):c.*874C>G variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000283 in 1,411,572 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: 0.0000028 ( 0 hom. )

Consequence

SLC26A1
NM_022042.4 3_prime_UTR

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.376

Publications

0 publications found

Variant links:

Genes affected

SLC26A1 (HGNC:10993): (solute carrier family 26 member 1) This gene is a member of a family of sulfate/anion transporter genes. Family members are well conserved in their genomic (number and size of exons) and protein (aa length among species) structures, but have markedly different tissue expression patterns. This gene is primarily expressed in the liver, pancreas, and brain. Three splice variants that encode different isoforms have been identified. [provided by RefSeq, Jul 2008]

SLC26A1 links:

IDUA (HGNC:5391): (alpha-L-iduronidase) This gene encodes an enzyme that hydrolyzes the terminal alpha-L-iduronic acid residues of two glycosaminoglycans, dermatan sulfate and heparan sulfate. This hydrolysis is required for the lysosomal degradation of these glycosaminoglycans. Mutations in this gene that result in enzymatic deficiency lead to the autosomal recessive disease mucopolysaccharidosis type I (MPS I). [provided by RefSeq, Jul 2008]

IDUA Gene-Disease associations (from GenCC):

mucopolysaccharidosis type 1
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen, Myriad Women’s Health
Scheie syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, G2P, Labcorp Genetics (formerly Invitae), Orphanet
Hurler syndrome
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp, PanelApp Australia
Hurler-Scheie syndrome
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet

IDUA links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 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 4-987959-G-C is Benign according to our data. Variant chr4-987959-G-C is described in ClinVar as Likely_benign. ClinVar VariationId is 798360.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC26A1	NM_022042.4 link	c.*874C>G		3_prime_UTR_variant	Exon 3 of 3	ENST00000398516.3	NP_071325.2
IDUA	NM_000203.5 link	c.299+10G>C		intron_variant	Intron 2 of 13	ENST00000514224.2	NP_000194.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC26A1	ENST00000398516.3 link	c.*874C>G		3_prime_UTR_variant	Exon 3 of 3	1	NM_022042.4	ENSP00000381528.2
IDUA	ENST00000514224.2 link	c.299+10G>C		intron_variant	Intron 2 of 13	2	NM_000203.5	ENSP00000425081.2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000594

AC:

AN:

168392

AF XY:

0.0000110

show subpopulations

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:

0.00000283

AC:

AN:

1411572

Hom.:

Cov.:

AF XY:

0.00000430

AC XY:

AN XY:

697384

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32170

American (AMR)

AF:

0.00

AC:

AN:

37820

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25312

East Asian (EAS)

AF:

0.00

AC:

AN:

36776

South Asian (SAS)

AF:

0.0000371

AC:

AN:

80792

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48634

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5276

European-Non Finnish (NFE)

AF:

9.20e-7

AC:

AN:

1086390

Other (OTH)

AF:

0.00

AC:

AN:

58402

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Mucopolysaccharidosis type 1

Benign:1

Oct 02, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.82

CADD

Benign

1.7

(source)

DANN

Benign

0.60

PhyloP100

-0.38

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over