rs71627068

Variant names:

• chr5-74685135-C-A
• rs71627068
• ENST00000511181.5:c.-376-4193C>A

Your query was ambiguous. Multiple possible variants found:

• chr5-74685135-C-A
• chr5-74685135-C-G
• chr5-74685135-C-T

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_001292004.2(HEXB):​c.-376-4193C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.0 (0 hom., cov: 31)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: HEXB NM_001292004.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.274
• Publications: 7 publications found

Genes affected

HEXB (HGNC:4879): (hexosaminidase subunit beta) Hexosaminidase B is the beta subunit of the lysosomal enzyme beta-hexosaminidase that, together with the cofactor GM2 activator protein, catalyzes the degradation of the ganglioside GM2, and other molecules containing terminal N-acetyl hexosamines. Beta-hexosaminidase is composed of two subunits, alpha and beta, which are encoded by separate genes. Both beta-hexosaminidase alpha and beta subunits are members of family 20 of glycosyl hydrolases. Mutations in the alpha or beta subunit genes lead to an accumulation of GM2 ganglioside in neurons and neurodegenerative disorders termed the GM2 gangliosidoses. Beta subunit gene mutations lead to Sandhoff disease (GM2-gangliosidosis type II). Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2014]

HEXB Gene-Disease associations (from GenCC):

• Sandhoff disease

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Myriad Women’s Health, ClinGen, Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P

ENSG00000306131 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.52).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001292004.2. 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
	HEXB	NM_001292004.2		c.-376-4193C>A		intron	N/A	NP_001278933.1	Q5URX0
	HEXB	NM_000521.4	MANE Select	c.-126C>A		upstream_gene	N/A	NP_000512.2	P07686

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HEXB	ENST00000511181.5	TSL:1	c.-376-4193C>A		intron	N/A	ENSP00000426285.1	Q5URX0
	HEXB	ENST00000261416.12	TSL:1 MANE Select	c.-126C>A		upstream_gene	N/A	ENSP00000261416.7	P07686
	HEXB	ENST00000513079.5	TSL:2	n.-61C>A		upstream_gene	N/A

Frequencies

GnomAD3 genomes AF: 0.00 AC: 0 AN: 151300 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 903668 Hom.: 0 Cov.: 12 AF XY: 0.00 AC XY: 0 AN XY: 448710

African (AFR) AF: 0.00 AC: 0 AN: 17636

American (AMR) AF: 0.00 AC: 0 AN: 12624

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 15214

East Asian (EAS) AF: 0.00 AC: 0 AN: 27570

South Asian (SAS) AF: 0.00 AC: 0 AN: 50316

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 29512

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 2832

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 707888

Other (OTH) AF: 0.00 AC: 0 AN: 40076

GnomAD4 genome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 151300 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 73834

African (AFR) AF: 0.00 AC: 0 AN: 41168

American (AMR) AF: 0.00 AC: 0 AN: 15236

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5078

South Asian (SAS) AF: 0.00 AC: 0 AN: 4810

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10478

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67758

Other (OTH) AF: 0.00 AC: 0 AN: 2088

Alfa AF: 0.00 Hom.: 693

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.52
CADD	Benign	15
DANN	Benign	0.97
PhyloP100		-0.27
PromoterAI		-0.14	Neutral

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs71627068; hg19: chr5-73980960;