rs121908405
Variant summary
Our verdict is Pathogenic. Variant got 13 ACMG points: 13P and 0B. PM1PM2PM4_SupportingPP5_Very_Strong
The NM_054027.6(ANKH):c.1129_1131del(p.Phe377del) variant causes a inframe deletion 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 (★★).
Frequency
Genomes: not found (cov: 33)
Consequence
ANKH
NM_054027.6 inframe_deletion
NM_054027.6 inframe_deletion
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: 9.32
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]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 13 ACMG points.
PM1
?
In a topological_domain Cytoplasmic (size 31) in uniprot entity ANKH_HUMAN there are 4 pathogenic changes around while only 1 benign (80%) in NM_054027.6
PM2
?
Very rare variant in population databases, with high coverage;
PM4
?
Nonframeshift variant in NON repetitive region in NM_054027.6. Strenght limited to Supporting due to length of the change: 1aa.
PP5
?
Variant 5-14716715-GGAA-G is Pathogenic according to our data. Variant chr5-14716715-GGAA-G is described in ClinVar as [Pathogenic]. Clinvar id is 5191.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr5-14716715-GGAA-G is described in Lovd as [Pathogenic].
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
ANKH | NM_054027.6 | c.1129_1131del | p.Phe377del | inframe_deletion | 9/12 | ENST00000284268.8 | |
ANKH | XM_017009644.3 | c.1045_1047del | p.Phe349del | inframe_deletion | 9/12 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
ANKH | ENST00000284268.8 | c.1129_1131del | p.Phe377del | inframe_deletion | 9/12 | 1 | NM_054027.6 | P1 | |
ANKH | ENST00000502585.1 | n.371_373del | non_coding_transcript_exon_variant | 1/4 | 2 |
Frequencies
GnomAD3 genomes ? Cov.: 33
GnomAD3 genomes
?
Cov.:
33
We have no GnomAD4 exomes data on this position. Probably position not covered by the project.
GnomAD4 genome ? Cov.: 33
GnomAD4 genome
?
Cov.:
33
ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
not provided Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Oct 25, 2023 | This variant, c.1129_1131del, results in the deletion of 1 amino acid(s) of the ANKH protein (p.Phe377del), but otherwise preserves the integrity of the reading frame. This variant is not present in population databases (gnomAD no frequency). This variant has been observed in individuals with craniometaphyseal dysplasia (PMID: 11326272). It has also been observed to segregate with disease in related individuals. Algorithms developed to predict the effect of variants on protein structure and function are not available or were not evaluated for this variant. Experimental studies have shown that this variant affects ANKH function (PMID: 30356088). For these reasons, this variant has been classified as Pathogenic. - |
Craniometaphyseal dysplasia, autosomal dominant Pathogenic:1
Pathogenic, no assertion criteria provided | literature only | OMIM | Jun 01, 2001 | - - |
Chondrocalcinosis 2 Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Mendelics | May 04, 2022 | - - |
Computational scores
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Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at