rs121908408

Variant names:

• chr5-14711205-TCTC-T
• rs121908408
• NM_054027.6:c.1468_1470delGAG

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM4_Supporting PP5 BS2

The NM_054027.6(ANKH):​c.1468_1470delGAG​(p.Glu490del) variant causes a conservative inframe deletion change. The variant allele was found at a frequency of 0.0000274 in 1,461,752 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000027 (0 hom.)
• Consequence: ANKH NM_054027.6 conservative_inframe_deletion
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 6.75
• Publications: 7 publications found

Genes affected

ANKH (HGNC:15492): (ANKH inorganic pyrophosphate transport regulator) This gene encodes a multipass transmembrane protein that is expressed in joints and other tissues and controls pyrophosphate levels in cultured cells. Progressive ankylosis-mediated control of pyrophosphate levels has been suggested as a possible mechanism regulating tissue calcification and susceptibility to arthritis in higher animals. Mutations in this gene have been associated with autosomal dominant craniometaphyseal dysplasia. [provided by RefSeq, Jul 2008]

OTULIN (HGNC:25118): (OTU deubiquitinase with linear linkage specificity) This gene encodes a member of the peptidase C65 family of ubiquitin isopeptidases. Members of this family remove ubiquitin from proteins. The encoded enzyme specifically recognizes and removes M1(Met1)-linked, or linear, ubiquitin chains from protein substrates. Linear ubiquitin chains are known to regulate the NF-kappa B signaling pathway in the context of immunity and inflammation. Mutations in this gene cause a potentially fatal autoinflammatory syndrome in human patients. [provided by RefSeq, Sep 2016]

OTULIN Gene-Disease associations (from GenCC):

• autoinflammation, panniculitis, and dermatosis syndrome, autosomal recessive

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: G2P, Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae)
• hereditary periodic fever syndrome

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
• immunodeficiency 107, susceptibility to invasive staphylococcus aureus infection

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM4: Nonframeshift variant in NON repetitive region in NM_054027.6. Strenght limited to Supporting due to length of the change: 1aa.
• PP5: Variant 5-14711205-TCTC-T is Pathogenic according to our data. Variant chr5-14711205-TCTC-T is described in ClinVar as Pathogenic. ClinVar VariationId is 5197.Status of the report is no_assertion_criteria_provided, 0 stars.
• BS2: High AC in GnomAdExome4 at 40 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_054027.6. 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
	ANKH	NM_054027.6	MANE Select	c.1468_1470delGAG	p.Glu490del	conservative_inframe_deletion	Exon 12 of 12	NP_473368.1	Q9HCJ1-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ANKH	ENST00000284268.8	TSL:1 MANE Select	c.1468_1470delGAG	p.Glu490del	conservative_inframe_deletion	Exon 12 of 12	ENSP00000284268.6	Q9HCJ1-1
	ANKH	ENST00000887636.1		c.1462_1464delGAG	p.Glu488del	conservative_inframe_deletion	Exon 12 of 12	ENSP00000557695.1
	ANKH	ENST00000964374.1		c.1462_1464delGAG	p.Glu488del	conservative_inframe_deletion	Exon 12 of 12	ENSP00000634433.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.0000159 AC: 4 AN: 251494 AF XY: 0.00000736

Gnomad AFR exome AF: 0.0000615

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: 0.0000176

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.0000274 AC: 40 AN: 1461752 Hom.: 0 AF XY: 0.0000275 AC XY: 20 AN XY: 727188

African (AFR) AF: 0.0000299 AC: 1 AN: 33474

American (AMR) AF: 0.0000224 AC: 1 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39696

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53414

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000324 AC: 36 AN: 1111898

Other (OTH) AF: 0.0000331 AC: 2 AN: 60390

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000434 Hom.: 0

Bravo AF: 0.0000227

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	CHONDROCALCINOSIS 2, SPORADIC (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		6.7
Mutation Taster		=13/87	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		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: rs121908408; hg19: chr5-14711314;