chr8-61526021-AGGTT-CCC

Position:

• chr8-61526021-AGGTT-CCC

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PVS1 PM2 PP5

The NM_004318.4(ASPH):​c.1852_1856delinsGGG​(p.Asn618GlyfsTer20) variant causes a frameshift change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (no stars). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ASPH NM_004318.4 frameshift
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 8.69

Genes affected

ASPH (HGNC:757): (aspartate beta-hydroxylase) This gene is thought to play an important role in calcium homeostasis. The gene is expressed from two promoters and undergoes extensive alternative splicing. The encoded set of proteins share varying amounts of overlap near their N-termini but have substantial variations in their C-terminal domains resulting in distinct functional properties. The longest isoforms (a and f) include a C-terminal Aspartyl/Asparaginyl beta-hydroxylase domain that hydroxylates aspartic acid or asparagine residues in the epidermal growth factor (EGF)-like domains of some proteins, including protein C, coagulation factors VII, IX, and X, and the complement factors C1R and C1S. Other isoforms differ primarily in the C-terminal sequence and lack the hydroxylase domain, and some have been localized to the endoplasmic and sarcoplasmic reticulum. Some of these isoforms are found in complexes with calsequestrin, triadin, and the ryanodine receptor, and have been shown to regulate calcium release from the sarcoplasmic reticulum. Some isoforms have been implicated in metastasis. [provided by RefSeq, Sep 2009]

ACMG classification

Verdict is Pathogenic. Variant got 11 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 8-61526021-AGGTT-CCC is Pathogenic according to our data. Variant chr8-61526021-AGGTT-CCC is described in ClinVar as [Pathogenic]. Clinvar id is 137614.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ASPH	NM_004318.4	c.1852_1856delinsGGG	p.Asn618GlyfsTer20	frameshift_variant	22/25	ENST00000379454.9	NP_004309.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ASPH	ENST00000379454.9	c.1852_1856delinsGGG	p.Asn618GlyfsTer20	frameshift_variant	22/25	1	NM_004318.4	ENSP00000368767	P3
ASPH	ENST00000541428.5	c.1765_1769delinsGGG	p.Asn589GlyfsTer20	frameshift_variant	22/25	2		ENSP00000437864	A2
ASPH	ENST00000521909.1	n.62_66delinsGGG		non_coding_transcript_exon_variant	1/3	3

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Facial dysmorphism-lens dislocation-anterior segment abnormalities-spontaneous filtering blebs syndrome Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

May 01, 2014

- -

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs879255574; hg19: chr8-62438580;