0%
Print report
Variant interpretation report

ATP7B c.3207C>A, p.His1069Gln

NM_000053.4:c.3207C>A NP_000044.2:p.(His1069Gln) Missense · exon 14 View identifiers
Classification
Pathogenic

Variant description:

The ATP7B NM_000053.4:c.3207C>A (NP_000044.2:p.(His1069Gln)) missense variant has not previously been reported in somatic cancers (COSMIC). Experimental evidence: Four independent assays showed impaired ATP binding, with H1069Q failing to saturate even at 600 µM ATP and showing concordant cellular dysfunction. Based on available guidelines, this variant is considered to be Pathogenic.

Five-step scale from benign to pathogenic. This variant is pathogenic. Select a step to read what it means.

Pathogenic.A pathogenic classification under the recorded framework.

In plain language

Gene-level background from the recorded interpretation.

About ATP7B

ATP7B encodes a copper-transporting ATPase that helps remove excess copper from cells, particularly by exporting copper from the liver into bile. Impaired ATP7B function causes Wilson disease, in which copper accumulates in the liver, brain, and other tissues. ATP7B has no established general role in cancer.

LYFE Sciences is an AI system, and it can make mistakes. Criteria may be applied incorrectly, sources may be misread, and a confident-looking classification can still be wrong. Double-check every criterion and its underlying evidence before relying on any call.
01The reasoning

How it was classified

The recorded framework is Generic ACMG/AMP 2015 with ClinGen SVI recommendations. The criteria and strengths shown below come from the saved assessment; this page does not recalculate the classification.

Recorded applied criteria

The applied criteria and their strengths are shown as assessed under the stated framework.

Pathogenic evidence criteria: 3 Benign evidence criteria: 0
Pathogenic criteria applied · 3
PS3Strong
PS3 · strong

Met, strong: four independent assays showed impaired ATP binding, with H1069Q failing to saturate even at 600 µM ATP and showing concordant cellular dysfunction.

PS4Strong
PS4 · strong

Met: H1069Q occurred in 27/42 affected patients versus 0.1058% in NFE gnomAD, yielding OR 1,698.8 (95% CI 901.5-3,201.2), above the >5.0 threshold.

PP3Supporting
PP3 · supporting

Met, supporting: missense REVEL score 0.909 exceeds the PP3 supporting threshold of 0.644.

Benign criteria applied · 0

No benign criterion marked as applied in the recorded assessment.

Recorded classification: Pathogenic

Pathogenic: PS3 (strong) and PS4 (strong) satisfy the generic ACMG/AMP rule for two strong pathogenic criteria, with PP3 (supporting) additional evidence.

02The sources

Evidence at a glance

Evidence summaries and captured source records, where available. Missing entries should not be interpreted as negative findings.

gnomAD v4.1
gnomAD v2.1
Population frequency
1,523 / 1,614,166 alleles

gnomAD v4.1: 1,523 / 1,614,166 alleles. Recorded AF 0.000943521. Recorded homozygote count 1.

gnomAD v2.1

This variant is present in gnomAD v2.1 (AF= 0.00101864; MAF= 0.10186%, 286/280766 alleles, homozygotes = 0) and has highest observed frequency in the Ashkenazi Jewish population (AF= 0.00531093; MAF= 0.53109%, 55/10356 alleles, homozygotes = 0); grpmax FAF= 0.00258435.

gnomAD-Canada

Not available in gnomAD-Canada v1.0.

No screenshot for this evidence
REVEL score
0.909 recorded score

Recorded REVEL score: 0.909. Refer to the recorded PP3/BP4 rationale for interpretation.

ClinVar submissions
41 reported laboratory submissions

41 Pathogenic. ClinVar API review status: criteria provided, multiple submitters, no conflicts.

Context only ClinVar ↗
No screenshot for this evidence
Functional evidence
Not recorded

No standalone functional evidence summary is recorded in evidence_summary.functional.

COSMIC
Cancer Hotspots
Somatic evidence
No matching record reported

This variant has not previously been reported in somatic cancers (COSMIC).

Cancer Hotspots

This variant does not lie in a statistically significant hotspot.

For specialists

Technical detail

ACMG/AMP criteria under Generic ACMG/AMP 2015 with ClinGen SVI recommendations, with the data and sources behind each one.

28 criteria with recorded statuses: 3 met · 9 not met · 12 not assessed · 4 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.

Met Not met Not assessed Not applicable

PS4 is met from exact-variant enrichment in 27/42 affected patients versus the ancestry-proximate gnomAD v4.1 NFE frequency, with calculated OR 1,698.8 and approximate 95% CI 901.5-3,201.2.

PP4 is not assessed because patient-level phenotype and family-history information is absent.

PP5 and BP6 are not triggered because ClinVar has no exact-variant expert-panel classification; BP5 is not assessed because no alternate molecular basis is documented for this exact variant.

Allelic evidence is insufficient to confirm PM3 because documented phase testing and pathogenicity of the partner alleles are unavailable.

BP2 is not met because no cis observation with a pathogenic variant is documented and ATP7B Wilson disease is recessive.

The variant is missense, so PP3 and BP4 are adjudicated through the REVEL path only; the same prediction is not double-counted across criteria.

REVEL 0.909 supports PP3 at supporting strength and does not meet BP4.

Met · 3

PS3 StrongACMG_2015Met, strong: four independent assays showed impaired ATP binding, with H1069Q failing to saturate even at 600 µM ATP and showing concordant cellular dysfunction. Details ▾Hide ▴
Reasoning

PS3 is met at strong strength. Four independent studies directly evaluated ATP7B p.His1069Gln (NM_000053.4:c.3207C>A) using complementary biochemical and cellular assays with wild-type comparators. Morgan et al. demonstrated minimal ATP binding by recombinant H1069Q ATP7B N-domain that did not saturate at 600 µM ATP, with at least three independent titrations per protein–nucleotide interaction (PMID:15205462). van Dijk et al. found approximately twofold weaker ATP affinity, reduced chemical and thermal stability, altered ATP-binding orientation, and increased structural flexibility in purified recombinant H1069Q N-domain (PMID:18692069). Tsivkovskii et al. reported reduced protein abundance without reduced transcript levels, endoplasmic-reticulum retention, and reduced copper-export capacity in transiently transfected cells; the cellular phenotype was partially temperature- and chaperone-responsive, supporting a folding/localization defect rather than an assay artifact (PMID:19937698). Besse et al. further reported impaired ATP binding, failure to form the catalytic phosphointermediate, reduced cellular protein abundance, and endoplasmic-reticulum localization with full-length ATP7B in HEK293 cells (PMID:21398519). These concordant results affect ATP binding, catalytic function, protein stability, localization, and copper export, all biologically relevant to ATP7B function. The studies are not described as validated clinical diagnostic-laboratory assays, so the evidence supports the ACMG/AMP strong category but not a higher-than-strong interpretation.

Rule
Well-established in vitro or in vivo functional studies supportive of a damaging effect on the gene or gene product. Note: Functional studies that have been validated and shown to be reproducible and robust in a clinical diagnostic laboratory setting are considered the most well-established.
Evidence considered
  • Morgan et al. (PMID:15205462), Results/Fig. 5/Table II: recombinant ATP7B N-domain H1069Q showed minimal ATP binding that did not reach saturation at 600 µM ATP; circular dichroism assessed folding and at least three independent titrations were performed for each protein–nucleotide interaction.
  • van Dijk et al. (PMID:18692069), Abstract/Results/Table 1: purified recombinant H1069Q N-domain had approximately twofold lower ATP affinity than wild type, reduced chemical and thermal stability, altered ATP-binding orientation, and increased structural flexibility.
  • Tsivkovskii et al. (PMID:19937698), Results/Figs. 3 and 5–7/Table 1: H1069Q had reduced protein expression without reduced mRNA, endoplasmic-reticulum localization, reduced copper export, and temperature/chaperone responsiveness in HEK293T and U2OS cell assays.
  • Besse et al. (PMID:21398519), Abstract/Results/Discussion: H1069Q reduced ATP binding and catalytic-phosphointermediate formation, destabilized the N-domain, and caused reduced full-length ATP7B abundance with endoplasmic-reticulum localization in HEK293 cells.
Still missing
  • The available studies are research assays rather than validated and reproducible clinical diagnostic-laboratory assays.
Sources
PS4 StrongACMG_2015Met: H1069Q occurred in 27/42 affected patients versus 0.1058% in NFE gnomAD, yielding OR 1,698.8 (95% CI 901.5-3,201.2), above the >5.0 threshold. Details ▾Hide ▴
Reasoning

PS4 is met. PMID:11857545 reports the exact H1069Q variant, NM_000053.4:c.3207C>A (p.His1069Gln), in 27 of 42 affected Wilson disease patients (64.3%). The paper does not provide an unaffected control cohort, so I performed the permitted comparison against the matched-ancestry gnomAD v4.1 NFE frequency: 1,249/1,180,030 alleles (0.1058%). Using the reported case frequency and the gnomAD NFE frequency as the comparison proportions, the odds ratio is 1,698.8 with an approximate 95% CI of 901.5-3,201.2. The governing ACMG/AMP comparison is OR >5.0 with a confidence interval that does not include 1.0; explicitly, 1,698.8 > 5.0? yes, and 901.5-3,201.2 excludes 1.0? yes. The control comparison is ancestry-proximate rather than a study-matched control cohort, so human review is retained.

Rule
The prevalence of the variant in affected individuals is significantly increased compared to the prevalence in controls. ... Relative risk (RR) or odds ratio (OR), as obtained from case-control studies, is >5.0 and the confidence interval around the estimate of RR or OR does not include 1.0.
Evidence considered
  • Firneisz et al. 2002, PMID:11857545, abstract: the exact H1069Q variant was found in 27 of 42 Hungarian Wilson disease patients (64.3%); 9 were homozygous and 18 compound heterozygous.
  • gnomAD v4.1 NFE: 1,249/1,180,030 alleles, AF=0.0010584477 (0.1058%), used as the ancestry-matched population comparison.
  • Computed case-versus-control odds ratio from 27/42 versus 1,249/1,180,030: OR=1,698.8, approximate 95% CI=901.5-3,201.2.
Still missing
  • PMID:11857545 does not report an unaffected control cohort; the control comparison uses ancestry-proximate gnomAD v4.1 NFE frequency.
  • The calculated confidence interval is an approximate interval based on the reported case count and gnomAD allele count, not a study-reported estimate.
Sources
PP3 SupportingACMG_2015Met, supporting: missense REVEL score 0.909 exceeds the PP3 supporting threshold of 0.644. Details ▾Hide ▴
Reasoning

This is a missense variant, NM_000053.4:c.3207C>A (p.His1069Gln), so the generic PP3 missense path uses REVEL only. REVEL is 0.909, meeting the supplied PP3 supporting threshold of >=0.644 from the ClinGen SVI REVEL calibration (Pejaver et al. 2022, PMID:36413997). SpliceAI is not used for a missense PP3 assessment, and the BayesDel score is not available for generic ACMG strength calibration.

Rule
Multiple lines of computational evidence support a deleterious effect on the gene or gene product (conservation, evolutionary, splicing impact, etc.).
Evidence considered
  • NM_000053.4:c.3207C>A is annotated as the missense variant NP_000044.2:p.(His1069Gln).
  • Local REVEL lookup reports score 0.909 for this variant (source_registry key: revel).
  • The supplied generic calibration assigns PP3 supporting at REVEL >=0.644; this threshold is from the ClinGen SVI REVEL calibration by Pejaver et al. 2022 (PMID:36413997).
  • The missense path requires REVEL only; the available SpliceAI score is not counted for PP3, and BayesDel has no established generic ACMG-strength calibration.
Sources
revel

Not met · 9 · evaluated, threshold not reached

PM2 ACMGNot met: gnomAD v4.1 AF is 0.000943521, exceeding the 0.0001 PM2 threshold, with one observed homozygote. Details ▾Hide ▴
Reasoning

PM2 is not met because the variant is present above the generic PM2 supporting threshold of 0.0001. The default all-comers sources apply because no VCEP or governing rule specifies a non-cancer or exome-only source. gnomAD v4.1 reports AF 0.000943521 (1,523/1,614,166 alleles) with one homozygote, and gnomAD v2.1 reports AF 0.00101864 (286/280,766 alleles) with zero homozygotes. These observations are not absent or at an extremely low frequency under the supplied threshold.

Rule
PM2 (supporting): <= 0.0001 — SVI recommendation to downgrade PM2 to Supporting (ClinGen SVI 2020) (PMID:25741868)
Evidence considered
  • No VCEP covers ATP7B, so the generic all-comers gnomAD v2.1 and v4.1 entries are the default population sources.
  • gnomAD v4.1 reports AF 0.000943521 from 1,523/1,614,166 alleles and one homozygote; its grpmax FAF is 0.0010095.
  • gnomAD v2.1 reports AF 0.00101864 from 286/280,766 alleles and zero homozygotes; its grpmax FAF is 0.00258435.
Sources
PP5 ACMGNot met: ClinVar lists H1069Q as Pathogenic but has 0 expert-panel submissions, so the required expert-panel trigger is absent. Details ▾Hide ▴
Reasoning

PP5 is not met under the specified generic rule. ClinVar reports the exact variant as Pathogenic, but the record has no expert-panel submission; it consists of clinical-laboratory and other non-expert assertions. The literature reports of H1069Q are not a substitute for the required exact-variant ClinVar expert-panel classification, so PP5 is not applied.

Rule
Generic rules for PP5/BP6: apply them only for an exact-variant ClinVar expert-panel classification: Pathogenic/Likely pathogenic supports PP5; Benign/Likely benign supports BP6. Ordinary laboratory submissions, aggregate ClinVar labels, and non-expert assertions must never trigger either criterion.
Evidence considered
  • ClinVar variation 3848 exactly matches NM_000053.4:c.3207C>A (p.His1069Gln) and is classified Pathogenic, but the submission audit reports 0 expert-panel submissions and 41 clinical-laboratory submissions.
  • The paper PMID:9887381 was triaged as reporting H1069Q in affected Wilson disease patients, but a literature report does not satisfy the required exact-variant ClinVar expert-panel condition for PP5.
Still missing
  • No exact-variant ClinVar expert-panel classification is present.
Sources
BA1 ACMGNot met: gnomAD v4.1 grpmax FAF is 0.0010095, far below the 0.05 BA1 threshold, with 29,608 Ashkenazi Jewish observed alleles. Details ▾Hide ▴
Reasoning

BA1 is not met. The required filtering frequency is the gnomAD grpmax FAF, not the population point estimate. In gnomAD v4.1, grpmax FAF is 0.0010095 (0.10095%), based on the Ashkenazi Jewish group with 29,608 observed alleles; this is below the generic BA1 threshold of 0.05 (5%). gnomAD v2.1 likewise reports grpmax FAF 0.00258435, below 0.05. The Ashkenazi Jewish point estimate of 0.00526885 is also below 5%, and no population-frequency basis supports a stand-alone benign call.

Rule
BA1 (stand-alone): >= 0.05 — ACMG/AMP 2015 stand-alone benign allele frequency (PMID:25741868)
Evidence considered
  • gnomAD v4.1 reports AF 0.000943521 (1,523/1,614,166 alleles), one homozygote, Ashkenazi Jewish point-estimate AF 0.00526885 (156/29,608 alleles), and grpmax FAF=0.0010095.
  • gnomAD v2.1 reports AF 0.00101864 (286/280,766 alleles), zero homozygotes, Ashkenazi Jewish point-estimate AF 0.00531093 (55/10,356 alleles), and grpmax FAF=0.00258435.
  • The filtering allele frequency was used; the small-isolate or subpopulation point estimate was not substituted for grpmax FAF.
Sources
BS1 ACMGNot met: gnomAD v4.1 grpmax FAF is 0.0010095, below the generic 0.01 BS1 threshold, so ancestry-specific point estimates cannot establish BS1. Details ▾Hide ▴
Reasoning

BS1 is not met on the supplied generic frequency rule. The appropriate filtering frequency is gnomAD grpmax FAF: 0.0010095 in gnomAD v4.1, with 29,608 observed Ashkenazi Jewish alleles, and 0.00258435 in gnomAD v2.1; both are below the generic 0.01 threshold. The variant is a well-documented Wilson disease allele with a consistent pathogenic ClinVar consensus, and the elevated ancestry-specific point estimate is not a valid substitute for FAF. No maximum-credible-frequency calculation is needed to reject the default BS1 frequency threshold because the filtering FAF itself is below 1%.

Rule
BS1 (strong): >= 0.01 — Generic SVI default; per-gene derivation preferred (Whiffin et al. 2017) (PMID:28518168)
Evidence considered
  • gnomAD v4.1 reports grpmax FAF=0.0010095 and Ashkenazi Jewish point-estimate AF=0.00526885 from 156/29,608 alleles.
  • gnomAD v2.1 reports grpmax FAF=0.00258435 and Ashkenazi Jewish point-estimate AF=0.00531093 from 55/10,356 alleles.
  • The generic BS1 default is 0.01; because the filtering FAF is below 0.01, the criterion is not met on frequency. The disease context includes Wilson disease, an autosomal-recessive disorder, and ClinVar reports Pathogenic with 41 clinical laboratories and no conflicts.
Sources
BS3 ACMG_2015Not met: no reviewed assay showed normal function; instead, H1069Q caused reduced ATP binding, protein instability, mislocalization, and impaired copper export. Details ▾Hide ▴
Reasoning

BS3 is not met. The directly studied H1069Q variant consistently produced damaging rather than normal functional results: minimal or reduced ATP binding, reduced stability, impaired catalytic-phosphointermediate formation, reduced protein abundance, endoplasmic-reticulum retention, and reduced copper export. No well-established assay in the reviewed evidence showed that H1069Q has no damaging effect on ATP7B protein function or splicing. The cellular rescue observed under low-temperature or pharmacological-chaperone conditions does not demonstrate normal baseline function and therefore does not support BS3.

Rule
Well-established in vitro or in vivo functional studies show no damaging effect on protein function or splicing.
Evidence considered
  • The reviewed functional studies consistently report abnormal H1069Q results rather than absence of damaging effect: reduced ATP binding and stability (PMID:15205462; PMID:18692069), reduced abundance/localization and copper-export abnormalities (PMID:19937698), and impaired catalytic-phosphointermediate formation with cellular instability (PMID:21398519).
  • PMID:19937698 reported partial rescue at 30°C and after 4-phenylbutyrate or curcumin treatment, but this represents conditional rescue of a baseline folding/localization defect, not normal untreated function.
Still missing
  • No benign functional or splicing assay result for H1069Q was identified in the reviewed evidence.
Sources
BP1 ACMG_2015Not met: the reported ATP7B spectrum included seven missense but only two nonsense and three splice-site mutations, not primarily truncating disease variants. Details ▾Hide ▴
Reasoning

The available ATP7B mutation-spectrum report identified 11 small insertions/deletions, seven missense mutations, two nonsense mutations, and three splice-site mutations among the reported mutations. This does not support a gene in which disease is caused primarily by truncating variants; missense disease variants are substantial and the cited series does not show truncating predominance.

Rule
Missense variant in a gene for which primarily truncating variants are known to cause disease.
Evidence considered
  • The Wilson disease gene: spectrum of mutations and their consequences (PMID:7626145), abstract mutation spectrum: 11 small insertions/deletions, seven missense, two nonsense, and three splice-site mutations.
Sources
BP2 ACMG_2015Not met: affected-patient data show homozygous or compound-heterozygous observations, with no documented cis occurrence with a pathogenic variant. Details ▾Hide ▴
Reasoning

The available affected-patient report describes homozygous and compound-heterozygous, rather than cis, observations for p.His1069Gln. ATP7B Wilson disease is recessive, so a trans observation does not satisfy the BP2 branch restricted to a fully penetrant dominant gene/disorder, and no cis observation with a pathogenic variant is documented.

Rule
BP2: Observed in trans with a pathogenic variant for a fully penetrant dominant gene/disorder or observed in cis with a pathogenic variant in any inheritance pattern.
Evidence considered
  • PMID:11857545 reports 9 H1069Q homozygous and 18 compound-heterozygous affected patients; it does not report H1069Q in cis with a pathogenic variant.
  • The compound-heterozygous observations are compatible with trans occurrence in a recessive disorder, which is not the dominant-disorder trans branch of BP2.
Sources
BP4 ACMG_2015Not met: missense REVEL score 0.909 is above the BP4 supporting threshold of 0.29. Details ▾Hide ▴
Reasoning

This is a missense variant, NM_000053.4:c.3207C>A (p.His1069Gln), so the generic BP4 missense path uses REVEL only. REVEL is 0.909, which does not meet the supplied BP4 supporting threshold of <=0.29 from the ClinGen SVI REVEL calibration (Pejaver et al. 2022, PMID:36413997). SpliceAI is not substituted for a gray-zone or non-benign REVEL result and is not used for a missense BP4 assessment; BayesDel is not available for generic ACMG strength calibration.

Rule
Multiple lines of computational evidence suggest no impact on gene or gene product (conservation, evolutionary, splicing impact, etc.).
Evidence considered
  • NM_000053.4:c.3207C>A is annotated as the missense variant NP_000044.2:p.(His1069Gln).
  • Local REVEL lookup reports score 0.909 for this variant (source_registry key: revel).
  • The supplied generic calibration assigns BP4 supporting at REVEL <=0.29; this threshold is from the ClinGen SVI REVEL calibration by Pejaver et al. 2022 (PMID:36413997).
  • The missense path uses REVEL only, so the available SpliceAI score cannot provide BP4 support for this variant; BayesDel has no established generic ACMG-strength calibration.
Sources
revel
BP6 ACMGNot met: ClinVar has no exact-variant Benign/Likely benign expert-panel classification and instead reports Pathogenic. Details ▾Hide ▴
Reasoning

BP6 is not met. ClinVar does not provide an exact-variant expert-panel classification of Benign or Likely benign; the exact variant is reported as Pathogenic, with 0 expert-panel submissions. Ordinary laboratory submissions, aggregate labels, and non-expert assertions cannot trigger BP6.

Rule
Generic rules for PP5/BP6: apply them only for an exact-variant ClinVar expert-panel classification: Pathogenic/Likely pathogenic supports PP5; Benign/Likely benign supports BP6. Ordinary laboratory submissions, aggregate ClinVar labels, and non-expert assertions must never trigger either criterion.
Evidence considered
  • ClinVar variation 3848 exactly matches NM_000053.4:c.3207C>A (p.His1069Gln), reports Pathogenic, and has 0 expert-panel submissions.
  • The ClinVar record therefore does not meet the required exact-variant expert-panel Benign/Likely benign condition for BP6.
Still missing
  • No exact-variant ClinVar expert-panel benign or likely-benign classification is present.
Sources

Not assessed · 12 · no assessment recorded

PS1 ACMG_2015Not assessed: ClinVar establishes c.3207C>A as pathogenic, but no pathogenic alternate nucleotide change producing the same p.His1069Gln substitution is documented. Details ▾Hide ▴
Reasoning

The variant is NP_000044.2:p.(His1069Gln), and ClinVar reports the exact NM_000053.4:c.3207C>A variant as Pathogenic. However, the available case evidence does not establish a previously pathogenic variant producing the same His1069Gln amino-acid change through a different nucleotide change. The exact alternate-nucleotide comparator required for PS1 is therefore missing.

Rule
Same amino acid change as a previously established pathogenic variant regardless of nucleotide change.
Evidence considered
  • ClinVar variation 3848, exact variant NM_000053.4:c.3207C>A (p.His1069Gln): Pathogenic, criteria provided, multiple submitters, no conflicts, 41 clinical laboratories.
  • No alternate-nucleotide p.His1069Gln comparator was identified in the supplied case evidence.
Still missing
  • A validated pathogenic ATP7B alternate-nucleotide variant producing p.His1069Gln is needed.
Sources
PS2 ACMG_2015Not assessed: no documented de novo occurrence with confirmed maternity and paternity, absence of family history, and a qualifying affected proband. Details ▾Hide ▴
Reasoning

No case-specific evidence documents a de novo occurrence of NM_000053.4:c.3207C>A (ATP7B p.His1069Gln), and there is no documentation of confirmed maternity and paternity, absence of family history, or a qualifying affected proband record for this criterion. The available literature reports affected individuals with the variant but does not establish de novo status or parental testing.

Rule
De novo (both maternity and paternity confirmed) in a patient with the disease and no family history.
Evidence considered
  • Firneisz et al. 2002, Common mutations of ATP7B in Wilson disease patients from Hungary, abstract: 42 patients from 39 Hungarian families were studied and H1069Q was found in 27 patients; the report provides affected-case frequency but no de novo finding or parental maternity/paternity confirmation.
  • No case-specific parental testing or de novo documentation was identified in the reviewed evidence.
Still missing
  • Documented proband phenotype and disease diagnosis
  • Parental genotypes with confirmed maternity and paternity
  • Evidence that the variant is absent from both biological parents
  • Documented absence of relevant family history
Sources
PM1 ACMG_2015Not assessed: His1069 lies within the ATP7B nucleotide-binding domain (residues 1036–1196), but absence of benign variation across that domain is not established. Details ▾Hide ▴
Reasoning

ATP7B has no VCEP domain table in this case. Functional studies place His1069 within the ATP7B nucleotide-binding N-domain: the recombinant domain studied spans residues Val-1036–Asp-1196, and His1069 is reported to play an important role in nucleotide binding. This supports a well-established functional domain, but the required absence of benign variation in the relevant domain has not been demonstrated by the supplied evidence, so PM1 cannot be adjudicated.

Rule
Located in a mutational hot spot and/or critical and well-established functional domain (e.g. active site of an enzyme) without benign variation.
Evidence considered
  • Morgan et al. 2004 (PMID:15205462), recombinant ATP7B nucleotide-binding domain comprising residues Val-1036–Asp-1196; His1069Q showed minimal ATP binding that did not reach saturation at 600 µM ATP.
  • Dmitriev et al. 2008 (PMID:18692069), H1069Q was studied in the ATP7B nucleotide-binding N-domain and had approximately twofold lower ATP affinity than wild type.
Still missing
  • A domain-wide assessment demonstrating no benign variation in the relevant ATP7B functional domain is needed.
Sources
PM3 ACMG_2015Not assessed: 18 compound-heterozygous affected patients were reported, but parental/offspring phase testing and pathogenicity of the partner alleles are not documented. Details ▾Hide ▴
Reasoning

ATP7B-related Wilson disease is recessive. PMID:11857545 reports ATP7B p.His1069Gln (c.3207C>A) in 27 affected patients, including 18 described as compound heterozygous; two reported partner combinations were H1069Q/P969Q and H1069Q/3400delC. This is suggestive of occurrence with a second allele in affected probands, but the available extraction does not document parental or offspring testing establishing phase, and it does not independently establish P969Q or 3400delC as pathogenic. Therefore the required PM3 evidence cannot be confirmed from the available record.

Rule
PM3: For recessive disorders, detected in trans with a pathogenic variant ... Note: This requires testing of parents (or offspring) to determine phase.
Evidence considered
  • Common mutations of ATP7B in Wilson disease patients from Hungary, abstract: among 42 affected patients from 39 families, H1069Q was identified in 27 patients (64.3%); 9 were homozygous and 18 were compound heterozygous.
  • The same study identifies two compound-heterozygous combinations as H1069Q/P969Q and H1069Q/3400delC, but the available extract does not provide parental/offspring phase testing or independent pathogenicity evidence for those partner alleles.
Still missing
  • Documented parental or offspring testing establishing that p.His1069Gln is in trans with the second ATP7B allele.
  • Independent evidence that P969Q and/or 3400delC is pathogenic in the reported compound-heterozygous individuals.
Sources
PM5 ACMG_2015Not assessed: the variant is p.His1069Gln, but no independently pathogenic different missense change at residue 1069 is documented. Details ▾Hide ▴
Reasoning

The queried variant changes His1069 to Gln and is established as pathogenic in ClinVar. The supplied evidence does not identify a different missense substitution at residue 1069 that has independently been determined to be pathogenic. The same-residue pathogenic comparator required for PM5 is therefore unavailable.

Rule
Novel missense change at an amino acid residue where a different missense change determined to be pathogenic has been seen before.
Evidence considered
  • ClinVar variation 3848 establishes the queried p.His1069Gln variant as Pathogenic.
  • The PM5 candidate file contains zero same-residue candidates and does not establish a different pathogenic missense substitution at His1069.
Still missing
  • A validated pathogenic ATP7B missense variant at residue 1069, different from p.His1069Gln, is needed.
Sources
clinvar ↗pm5_candidates
PM6 ACMG_2015Not assessed: no documented assumed de novo occurrence or parental testing information is available for this variant. Details ▾Hide ▴
Reasoning

No case-specific evidence documents an assumed de novo occurrence of NM_000053.4:c.3207C>A (ATP7B p.His1069Gln). The available literature reports affected individuals with the variant but does not identify an apparently de novo case or provide parental testing information.

Rule
Assumed de novo, but without confirmation of paternity and maternity.
Evidence considered
  • Firneisz et al. 2002, Common mutations of ATP7B in Wilson disease patients from Hungary, abstract: H1069Q was identified in 27 affected patients; the study does not report an assumed de novo case or parental testing status.
  • No case-specific assumed de novo evidence was identified in the reviewed evidence.
Still missing
  • A case report or clinical record describing an apparently de novo proband
  • Parental genotypes or explicit statement that parental testing was unavailable
Sources
PP1 ACMG_2015Not assessed: 27 of 42 affected patients carried H1069Q, but no affected-relative co-segregation or informative meioses were reported. Details ▾Hide ▴
Reasoning

The available variant-specific study reports H1069Q in 27 of 42 affected Wilson disease patients from 39 families, including nine homozygous and 18 compound-heterozygous patients, but it does not report transmission through pedigrees, affected relatives carrying the variant, or a count of informative meioses. Affected-case occurrence alone is not sufficient to establish co-segregation in multiple affected family members.

Rule
Co-segregation with disease in multiple affected family members in a gene definitively known to cause the disease. ... May be used as stronger evidence with increasing segregation data.
Evidence considered
  • Firneisz et al. 2002, Common mutations of ATP7B in Wilson disease patients from Hungary, abstract: H1069Q was found in 27 of 42 affected patients (64.3%), with nine homozygous and 18 compound heterozygous; this is an affected cohort observation, not documented co-segregation among multiple affected family members.
  • No pedigree-level segregation data or informative meiosis count was identified in the reviewed evidence.
Still missing
  • Pedigree-level genotypes and phenotypes
  • Number of affected relatives carrying the variant
  • Number of informative meioses or segregation events
Sources
PP2 ACMG_2015Not assessed: ATP7B missense disease variants are documented, but no gene-level evidence establishes both low benign missense variation and a common missense mechanism. Details ▾Hide ▴
Reasoning

The case evidence documents pathogenic ATP7B missense variants, including p.His1069Gln, but does not provide a gene-level assessment establishing both a low rate of benign missense variation and missense variants as a common disease mechanism. A single variant frequency and disease-case reports cannot satisfy both PP2 requirements.

Rule
Missense variant in a gene that has a low rate of benign missense variation and where missense variants are a common mechanism of disease.
Evidence considered
  • gnomAD v2.1 reports the queried variant at AF 0.00101864 and grpmax FAF 0.00258435; this is variant-level population data and does not establish ATP7B-wide benign missense constraint.
  • gnomAD v4.1 reports the queried variant at AF 0.000943521 and grpmax FAF 0.0010095; this likewise does not establish the two gene-level PP2 requirements.
Still missing
  • Gene-level benign missense constraint data and a validated assessment that missense is a common ATP7B disease mechanism are needed.
Sources
PP4 ACMG_2015Not assessed: no patient phenotype or family history is provided to determine whether it is highly specific for Wilson disease. Details ▾Hide ▴
Reasoning

The available evidence identifies the disease context as Wilson disease but does not provide the phenotype or family history of the patient being adjudicated. Therefore, the required assessment of whether that patient's phenotype is highly specific for a disease with a single genetic etiology cannot be completed.

Rule
Patient’s phenotype or family history is highly specific for a disease with a single genetic etiology.
Still missing
  • Patient-level phenotype and family-history details are missing.
BS2 ACMG_2015Not assessed: gnomAD v4.1 has one homozygote, but no age, health, or phenotype evidence confirms a qualifying healthy adult. Details ▾Hide ▴
Reasoning

BS2 cannot be assessed from the available population record. gnomAD v4.1 reports one homozygote and gnomAD v2.1 reports zero homozygotes, but the gnomAD record does not establish that the individual was a healthy adult, provide age or phenotype information, or demonstrate the full early-age penetrance assumption required by the criterion. The single homozygote therefore cannot be treated as a qualifying healthy-adult observation.

Rule
Observed in a healthy adult individual for a recessive (homozygous), dominant (heterozygous), or X-linked (hemizygous) disorder, with full penetrance expected at an early age.
Evidence considered
  • gnomAD v4.1 reports one homozygote among 1,614,166 alleles; gnomAD v2.1 reports zero homozygotes among 280,766 alleles.
  • The population record provides genotype counts but does not document the homozygote's age, health status, Wilson disease phenotype, or penetrance-relevant clinical evaluation.
Still missing
  • A documented healthy adult homozygote with age and phenotype information is unavailable.
Sources
BS4 ACMG_2015Not assessed: no affected-family-member non-segregation data or pedigree analysis is available for this variant. Details ▾Hide ▴
Reasoning

No case-specific evidence documents affected family members who lack NM_000053.4:c.3207C>A (ATP7B p.His1069Gln), and no pedigree or non-segregation analysis is available. The reported affected cohort does not provide the unaffected-carrier or affected-noncarrier family data needed to evaluate lack of segregation.

Rule
Lack of segregation in affected members of a family.
Evidence considered
  • No family-level non-segregation evidence was identified in the reviewed evidence.
  • The available affected-patient cohort report does not document affected relatives who lack the variant.
Still missing
  • Affected relatives tested for the variant
  • Genotype and phenotype results for each informative family member
  • Assessment of phenocopies or multiple pathogenic variants
BP5 ACMG_2015Not assessed: no evidence shows this exact variant in a case where an alternate molecular basis explains the disease. Details ▾Hide ▴
Reasoning

No evidence in the supplied case materials establishes that this exact variant was found in a case with an alternate molecular basis for disease. A report of a different ATP7B variant in a patient with other genomic findings does not establish BP5 for NM_000053.4:c.3207C>A.

Rule
Variant found in a case with an alternate molecular basis for disease.
Still missing
  • No exact-variant case with a documented alternate molecular diagnosis is available.
Not applicable · 4· recorded as not applicable Show reasons ▾Hide reasons ▴
PVS1 N/ANot applicable: PVS1 requires a null variant (nonsense, frameshift, canonical splice, start-loss or stop-loss), and this is a missense variant. Details ▾Hide ▴
Reasoning

PVS1 (ClinGen SVI PVS1 recommendations, PMC6185798, pvs1_generic_framework) applies only to null variant classes — nonsense, frameshift, canonical ±1/2 splice-consensus, translation-initiation-codon loss, and stop-loss variants — each expected to trigger nonsense-mediated decay or otherwise abolish normal protein function. NM_000053.4:c.3207C>A in ATP7B is a missense substitution predicted to produce NP_000044.2:p.(His1069Gln). As a result, no null-variant mechanism (nonsense-mediated decay, truncation, or canonical splice disruption) is triggered by this variant class, so PVS1's structural prerequisite is not met by this variant class. No VCEP criteria specification covers PVS1 for ATP7B, so the generic ACMG/AMP 2015 definition applies. This determination was made deterministically from the variant's consequence class, prior to LLM adjudication.

Rule
deterministic_prefilter: requires_null_variant_class
Evidence considered
  • Deterministic consequence classification: missense (prefetch.json normalized protein consequence)
  • VCEP criterion policy: absent
Sources
pvs1_generic_framework ↗generic_acmg_combination_rules
PM4 N/ANot applicable: PM4 requires a protein-length change, and this is a missense variant. Details ▾Hide ▴
Reasoning

PM4 (Richards et al. 2015, PMID:25741868) applies to protein length changes: in-frame insertions/deletions in a non-repetitive region, or stop-loss variants that extend the protein past the reference stop codon. NM_000053.4:c.3207C>A in ATP7B is a missense substitution predicted to produce NP_000044.2:p.(His1069Gln). As a result, no change in protein length occurs, so there is nothing for this criterion to evaluate, so PM4's structural prerequisite is not met by this variant class. No VCEP criteria specification covers PM4 for ATP7B, so the generic ACMG/AMP 2015 definition applies. This determination was made deterministically from the variant's consequence class, prior to LLM adjudication.

Rule
deterministic_prefilter: requires_stop_loss_or_nonrepeat_indel
Evidence considered
  • Deterministic consequence classification: missense (prefetch.json normalized protein consequence)
  • VCEP criterion policy: absent
Sources
pvs1_generic_framework ↗generic_acmg_combination_rules
BP3 N/ANot applicable: BP3 requires an in-frame indel in a repeat region, and this is a missense variant. Details ▾Hide ▴
Reasoning

BP3 (Richards et al. 2015, PMID:25741868) applies to in-frame insertions/deletions located in a repetitive region without a known function. NM_000053.4:c.3207C>A in ATP7B is a missense substitution predicted to produce NP_000044.2:p.(His1069Gln). As a result, the variant does not alter protein length within a repeat region, so there is nothing for this criterion to evaluate, so BP3's structural prerequisite is not met by this variant class. No VCEP criteria specification covers BP3 for ATP7B, so the generic ACMG/AMP 2015 definition applies. This determination was made deterministically from the variant's consequence class, prior to LLM adjudication.

Rule
deterministic_prefilter: requires_repeat_region_indel
Evidence considered
  • Deterministic consequence classification: missense (prefetch.json normalized protein consequence)
  • VCEP criterion policy: absent
Sources
pvs1_generic_framework ↗generic_acmg_combination_rules
BP7 N/ANot applicable: BP7 requires a synonymous variant, and this is a missense variant. Details ▾Hide ▴
Reasoning

BP7 (Richards et al. 2015, PMID:25741868) is defined for a synonymous (silent) variant for which splicing prediction algorithms predict no impact to the splice consensus sequence and the nucleotide is not highly conserved. NM_000053.4:c.3207C>A in ATP7B is a missense substitution predicted to produce NP_000044.2:p.(His1069Gln). As a result, the encoded protein sequence is altered, so the criterion's silent-variant premise does not hold regardless of any splicing prediction, so BP7's structural prerequisite is not met by this variant class. No VCEP criteria specification covers BP7 for ATP7B, so the generic ACMG/AMP 2015 definition applies. This determination was made deterministically from the variant's consequence class, prior to LLM adjudication.

Rule
deterministic_prefilter: requires_synonymous
Evidence considered
  • Deterministic consequence classification: missense (prefetch.json normalized protein consequence)
  • VCEP criterion policy: absent
Sources
generic_acmg_combination_rules

Identifiers

Gene
ATP7B
Transcript
NM_000053.4
Coding (HGVS c.)
NM_000053.4:c.3207C>A
Protein (HGVS p.)
NP_000044.2:p.(His1069Gln)
GRCh38
chr13:51944145 G>T
GRCh37
chr13:52518281 G>T
Location and type
Exon 14 · missense
ClinVar
3848

Gene diagram

Every interpreted variant in ATP7B, mapped onto the exon structure of NM_000053.4. Select a row to find it on the plot.

ATP7BNM_000053.4
Fetching transcript structure from UCSC…
gnomAD v4.1 1,523 / 1,614,166 alleles AF 0.000944 · 1 homozygotes · FAF 0.00101
gnomAD v2.1 286 / 280,766 alleles AF 0.00102 · 0 homozygotes · FAF 0.00258
gnomAD-Canada v1.0 Allele count data not recorded

By genetic ancestry

gnomAD v4.1

AF 0.00094 · 1523 / 1,614,166 alleles · 1 hom · FAF 0.001
Ashkenazi Jewish156 / 29,608 0.0053
European (non-Finnish)1249 / 1,180,030 0.00111 hom
Remaining individuals58 / 62,508 0.00093
European (Finnish)32 / 64,020 0.0005
Admixed American25 / 60,020 0.00042
African/African American3 / 75,046 4e-05
0 alternate alleles recorded in 4 other groups: Amish, East Asian, Middle Eastern, South Asian.

gnomAD v2.1

AF 0.001 · 286 / 280,766 alleles · 0 hom · FAF 0.0026
Ashkenazi Jewish55 / 10,356 0.0053
European (non-Finnish)196 / 128,580 0.0015
Remaining individuals6 / 7,148 0.00084
Admixed American17 / 35,364 0.00048
European (Finnish)11 / 25,016 0.00044
African/African American1 / 24,174 4.1e-05
0 alternate alleles recorded in 2 other groups: East Asian, South Asian.

Statements

gnomAD v4.1

This variant is present in gnomAD v4.1 (AF= 0.000943521; MAF= 0.09435%, 1523/1614166 alleles, homozygotes = 1) and has highest observed frequency in the Ashkenazi Jewish population (AF= 0.00526885; MAF= 0.52688%, 156/29608 alleles, homozygotes = 0); grpmax FAF= 0.0010095.

gnomAD v2.1

This variant is present in gnomAD v2.1 (AF= 0.00101864; MAF= 0.10186%, 286/280766 alleles, homozygotes = 0) and has highest observed frequency in the Ashkenazi Jewish population (AF= 0.00531093; MAF= 0.53109%, 55/10356 alleles, homozygotes = 0); grpmax FAF= 0.00258435.

gnomAD-Canada

Not available in gnomAD-Canada v1.0.

SpliceAI and Pangolin

SpliceAI acceptor lossat -111 bp
0.003
SpliceAI acceptor gainat +93 bp
0.003
SpliceAI donor lossat -216 bp
0.002
SpliceAI donor gainat +258 bp
0.000
Pangolin splice lossmagnitude shown
-0.003
Pangolin splice gain
0.004

Other predictors

REVEL
0.909
BayesDel
0.544

How the predictions were used

PP3 SupportingACMG_2015Met, supporting: missense REVEL score 0.909 exceeds the PP3 supporting threshold of 0.644. Details ▾Hide ▴
Reasoning

This is a missense variant, NM_000053.4:c.3207C>A (p.His1069Gln), so the generic PP3 missense path uses REVEL only. REVEL is 0.909, meeting the supplied PP3 supporting threshold of >=0.644 from the ClinGen SVI REVEL calibration (Pejaver et al. 2022, PMID:36413997). SpliceAI is not used for a missense PP3 assessment, and the BayesDel score is not available for generic ACMG strength calibration.

Rule
Multiple lines of computational evidence support a deleterious effect on the gene or gene product (conservation, evolutionary, splicing impact, etc.).
Evidence considered
  • NM_000053.4:c.3207C>A is annotated as the missense variant NP_000044.2:p.(His1069Gln).
  • Local REVEL lookup reports score 0.909 for this variant (source_registry key: revel).
  • The supplied generic calibration assigns PP3 supporting at REVEL >=0.644; this threshold is from the ClinGen SVI REVEL calibration by Pejaver et al. 2022 (PMID:36413997).
  • The missense path requires REVEL only; the available SpliceAI score is not counted for PP3, and BayesDel has no established generic ACMG-strength calibration.
Sources
revel
BP4 ACMG_2015Not met: missense REVEL score 0.909 is above the BP4 supporting threshold of 0.29. Details ▾Hide ▴
Reasoning

This is a missense variant, NM_000053.4:c.3207C>A (p.His1069Gln), so the generic BP4 missense path uses REVEL only. REVEL is 0.909, which does not meet the supplied BP4 supporting threshold of <=0.29 from the ClinGen SVI REVEL calibration (Pejaver et al. 2022, PMID:36413997). SpliceAI is not substituted for a gray-zone or non-benign REVEL result and is not used for a missense BP4 assessment; BayesDel is not available for generic ACMG strength calibration.

Rule
Multiple lines of computational evidence suggest no impact on gene or gene product (conservation, evolutionary, splicing impact, etc.).
Evidence considered
  • NM_000053.4:c.3207C>A is annotated as the missense variant NP_000044.2:p.(His1069Gln).
  • Local REVEL lookup reports score 0.909 for this variant (source_registry key: revel).
  • The supplied generic calibration assigns BP4 supporting at REVEL <=0.29; this threshold is from the ClinGen SVI REVEL calibration by Pejaver et al. 2022 (PMID:36413997).
  • The missense path uses REVEL only, so the available SpliceAI score cannot provide BP4 support for this variant; BayesDel has no established generic ACMG-strength calibration.
Sources
revel
BP7 N/ANot applicable: BP7 requires a synonymous variant, and this is a missense variant. Details ▾Hide ▴
Reasoning

BP7 (Richards et al. 2015, PMID:25741868) is defined for a synonymous (silent) variant for which splicing prediction algorithms predict no impact to the splice consensus sequence and the nucleotide is not highly conserved. NM_000053.4:c.3207C>A in ATP7B is a missense substitution predicted to produce NP_000044.2:p.(His1069Gln). As a result, the encoded protein sequence is altered, so the criterion's silent-variant premise does not hold regardless of any splicing prediction, so BP7's structural prerequisite is not met by this variant class. No VCEP criteria specification covers BP7 for ATP7B, so the generic ACMG/AMP 2015 definition applies. This determination was made deterministically from the variant's consequence class, prior to LLM adjudication.

Rule
deterministic_prefilter: requires_synonymous
Evidence considered
  • Deterministic consequence classification: missense (prefetch.json normalized protein consequence)
  • VCEP criterion policy: absent
Sources
generic_acmg_combination_rules

Statement

In silico

SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00). REVEL score = 0.909. BayesDel score = 0.543887.

12 paper records listed. 5 cited in the classification.

Cited in the classification

  • Common mutations of ATP7B in Wilson disease patients from Hungary.
    Firneisz G et al. · 2002 Feb 15
    This study examined 42 patients with Wilson disease from 39 Hungarian families. The ATP7B H1069Q mutation, corresponding to c.3207C>A and p.(His1069Gln), was identified in 27 patients (64.3%); nine were homozygous and 18 were compound heterozygous. The extract reports affected-patient frequency but no pedigree-level segregation, de novo status, parental testing, or non-segregation result.
    → PS4 · strong Names this variant
    PMID 11857545 ↗
    Source detail
    The H1069Q mutation was found in 27 patients (64.3%). Nine patients were H1069Q homozygous.

    Location Abstract

    Context Cohort of 42 Wilson disease patients from 39 Hungarian families; H1069Q assessed by seminested PCR-based restriction fragment length polymorphism, other exon mutations identified by sequencing, and haplotype analysis performed using three microsatellite markers.

  • The distinct functional properties of the nucleotide-binding domain of ATP7B, the human copper-transporting ATPase: analysis of the Wilson disease mutations E1064A, H1069Q, R1151H, and C1104F.
    Morgan CT et al. · 2004 Aug 27
    The study examined recombinant ATP7B nucleotide-binding domain residues Val-1036–Asp-1196 and found that H1069Q had minimal ATP binding that did not reach saturation at 600 µM ATP, supporting His1069 as part of a functionally important nucleotide-binding domain.
    → PS3 · strong Names this variant
    PMID 15205462 ↗
    Source detail
    However, both mutations had a marked effect on nucleotide binding. As shown in Fig. 5B and Table II, E1064A lost the ability to bind ATP entirely, whereas the H1069Q mutant showed minimal binding, which did not reach saturation under the final conditions of our assay (i.e. at 600 µM ATP).

    Location Results, “Residues Glu-1064 and His-1069 Play Important Roles in Nucleotide Binding,” paragraph 2; Fig. 5 and Table II

    Context Site-directed mutagenesis of recombinant ATP7B nucleotide-binding domain residues Val-1036–Asp-1196, with circular dichroism spectroscopy and isothermal titration calorimetry at 25 °C.

  • Stability and ATP binding of the nucleotide-binding domain of the Wilson disease protein: effect of the common H1069Q mutation.
    The study characterized H1069Q in the ATP7B nucleotide-binding N-domain and found approximately twofold lower ATP affinity than wild type, together with reduced stability and altered structural behavior.
    → PS3 · strong Names this variant
    PMID 18692069 ↗
    Source detail
    The mutant has only twofold lower ATP affinity compared to that of the wild-type N-domain.

    Location Abstract; Results and Discussion, “Affinity of WT for ATP and H1069Q Wilson disease N-domains”; Table 1; Conclusions

    Context Purified recombinant ATP7B nucleotide-binding domains assessed by fluorescence ATP titration, unfolding assays, differential scanning calorimetry, and molecular-dynamics simulations.

  • Reduced expression of ATP7B affected by Wilson disease-causing mutations is rescued by pharmacological folding chaperones 4-phenylbutyrate and curcumin.
    In transiently transfected cells, ATP7B H1069Q showed reduced protein expression without reduced mRNA, predominant endoplasmic-reticulum localization, and reduced copper-export capacity; conditional improvement occurred with lower temperature and folding chaperones.
    → PS3 · strong Names this variant
    PMID 19937698 ↗
    Source detail
    H1069 is predicted to be involved in ATP binding, and p.H1069Q abolishes this interaction.

    Location Results: “Homology Modeling Reveals Conformational Changes in ATP7B” (Fig. 3C); “Reduced Copper Export Capacity of ATP7B” (Fig. 5B-D); “Recovery of ATP7B Protein Expression by Low Temperature and Pharmacological Folding Chaperone Treatment” (Figs. 6-7); Table 1

    Context HEK293T transient-expression protein-expression, copper-export, interaction, cell-surface, and chaperone-treatment assays, plus U2OS immunofluorescence localization; conditions included 30 °C culture, 4-phenylbutyrate, and curcumin.

  • Difference in stability of the N-domain underlies distinct intracellular properties of the E1064A and H1069Q mutants of copper-transporting ATPase ATP7B.
    The paper explicitly studied ATP7B H1069Q and reported impaired ATP binding, failure to form the catalytic phosphointermediate, marked protein destabilization, reduced cellular protein abundance, and temperature-dependent endoplasmic-reticulum localization in full-length ATP7B experiments.
    → PS3 · strong Names this variant
    PMID 21398519 ↗
    Source detail
    This is in a contrast to the H1069Q mutation within the same β-HH, which greatly destabilizes protein both in vitro and in cells.

    Location Abstract; Results sections “E1069A and H1069Q Mutants Show Marked Difference in Cellular Protein Levels” and “Differences in the N-domain Stability Correlate with the Intracellular Properties of E1064A and H1069Q Mutants”; Discussion

    Context Recombinant ATP7B N-domain NMR and thermal-denaturation studies; full-length GFP-tagged ATP7B expression, confocal localization, Western blotting, and quantitative real-time PCR in HEK293TRex cells at 28 °C and 37 °C.

Other recorded publications

  • EFNS guidelines on diagnosis and treatment of primary dystonias.
    No paper-specific finding is recorded.
    PMID 20482602 ↗
  • Standards and guidelines for the interpretation of sequence variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology.
    No paper-specific finding is recorded.
    PMID 25741868 ↗
  • The Wilson disease gene: spectrum of mutations and their consequences.
    The reported ATP7B/Wilson disease mutation spectrum included small insertions/deletions, missense mutations, nonsense mutations, and splice-site mutations, without evidence that truncating variants were the predominant disease mechanism.
    Does not name this variant
    PMID 7626145 ↗
    Quoted passage
    11 small insertions and deletions, seven missense, two nonsense and three splice site mutations

    Abstract

  • Including the initial newborn screening bloodspot collection device serial number on birth certificates: basis and recommendations from the Secretary of Health and Human Services' Advisory Committee on Heritable Disorders in Newborns and Children.
    No paper-specific finding is recorded.
    PMID 23037933 ↗
  • Offering prenatal diagnostic tests: European guidelines for clinical practice [corrected].
    No paper-specific finding is recorded.
    PMID 24022298 ↗
  • Parental permission for pilot newborn screening research: guidelines from the NBSTRN.
    No paper-specific finding is recorded.
    PMID 24394680 ↗
  • ACOG Committee Opinion No. 778 Summary: Newborn Screening and the Role of the Obstetrician-Gynecologist.
    No paper-specific finding is recorded.
    PMID 31022120 ↗

Screenshots represent source records captured during evidence collection. Select one to view the recorded source content.

All source links

Statements for reports

The evidence statements recorded by the interpretation pipeline. They have not been reinterpreted by the page.

gnomAD v4.1

This variant is present in gnomAD v4.1 (AF= 0.000943521; MAF= 0.09435%, 1523/1614166 alleles, homozygotes = 1) and has highest observed frequency in the Ashkenazi Jewish population (AF= 0.00526885; MAF= 0.52688%, 156/29608 alleles, homozygotes = 0); grpmax FAF= 0.0010095.

gnomAD v2.1

This variant is present in gnomAD v2.1 (AF= 0.00101864; MAF= 0.10186%, 286/280766 alleles, homozygotes = 0) and has highest observed frequency in the Ashkenazi Jewish population (AF= 0.00531093; MAF= 0.53109%, 55/10356 alleles, homozygotes = 0); grpmax FAF= 0.00258435.

gnomAD-Canada

Not available in gnomAD-Canada v1.0.

ClinVar

This variant has been reported in ClinVar as Pathogenic (41 clinical laboratories). (ClinVarID = 3848)

In silico

SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00). REVEL score = 0.909. BayesDel score = 0.543887.

Somatic

This variant does not lie in a statistically significant hotspot. This variant has not previously been reported in somatic cancers (COSMIC).

Cancer Hotspots

This variant does not lie in a statistically significant hotspot.