rs797045384

Variant names:

• chrX-78040707-AA-TTAC
• rs797045384
• NM_000052.7:c.3775_3776delAAinsTTAC

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The ENST00000341514.11(ATP7A):​c.3775_3776delAAinsTTAC​(p.Lys1259LeufsTer29) variant causes a frameshift, missense 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K1259E) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 22)
• Consequence: ATP7A ENST00000341514.11 frameshift, missense
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 9.20
• Publications: 0 publications found

Genes affected

ATP7A (HGNC:869): (ATPase copper transporting alpha) This gene encodes a transmembrane protein that functions in copper transport across membranes. This protein is localized to the trans Golgi network, where it is predicted to supply copper to copper-dependent enzymes in the secretory pathway. It relocalizes to the plasma membrane under conditions of elevated extracellular copper, and functions in the efflux of copper from cells. Mutations in this gene are associated with Menkes disease, X-linked distal spinal muscular atrophy, and occipital horn syndrome. Alternatively-spliced transcript variants have been observed. [provided by RefSeq, Aug 2013]

PGK1 (HGNC:8896): (phosphoglycerate kinase 1) The protein encoded by this gene is a glycolytic enzyme that catalyzes the conversion of 1,3-diphosphoglycerate to 3-phosphoglycerate. The encoded protein may also act as a cofactor for polymerase alpha. Additionally, this protein is secreted by tumor cells where it participates in angiogenesis by functioning to reduce disulfide bonds in the serine protease, plasmin, which consequently leads to the release of the tumor blood vessel inhibitor angiostatin. The encoded protein has been identified as a moonlighting protein based on its ability to perform mechanistically distinct functions. Deficiency of the enzyme is associated with a wide range of clinical phenotypes hemolytic anemia and neurological impairment. Pseudogenes of this gene have been defined on chromosomes 19, 21 and the X chromosome. [provided by RefSeq, Jan 2014]

PGK1 Gene-Disease associations (from GenCC):

• glycogen storage disease due to phosphoglycerate kinase 1 deficiency

  Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, G2P, Genomics England PanelApp

ACMG classification

Our verdict: Pathogenic. The variant received 12 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 X-78040707-AA-TTAC is Pathogenic according to our data. Variant chrX-78040707-AA-TTAC is described in ClinVar as Pathogenic. ClinVar VariationId is 210460.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000341514.11. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ATP7A	NM_000052.7	MANE Select	c.3775_3776delAAinsTTAC	p.Lys1259LeufsTer29	frameshift missense	Exon 19 of 23	NP_000043.4
	ATP7A	NM_001282224.2		c.3541_3542delAAinsTTAC	p.Lys1181LeufsTer29	frameshift missense	Exon 18 of 22	NP_001269153.1
	ATP7A	NR_104109.2		n.948_949delAAinsTTAC		non_coding_transcript_exon	Exon 6 of 10

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ATP7A	ENST00000341514.11	TSL:1 MANE Select	c.3775_3776delAAinsTTAC	p.Lys1259LeufsTer29	frameshift missense	Exon 19 of 23	ENSP00000345728.6
	ATP7A	ENST00000689767.1		c.3868_3869delAAinsTTAC	p.Lys1290LeufsTer29	frameshift missense	Exon 21 of 25	ENSP00000509406.1
	ATP7A	ENST00000343533.10	TSL:5	c.3805_3806delAAinsTTAC	p.Lys1269LeufsTer29	frameshift missense	Exon 20 of 24	ENSP00000343026.6

Frequencies

GnomAD3 genomes Cov.: 22

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

GnomAD4 genome Cov.: 22

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	Menkes kinky-hair syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		9.2

Splicing

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

Other links and lift over

dbSNP: rs797045384; hg19: chrX-77296205;