Cited by 283Metabolism and Genetic DisordersLysosomal Storage Disorders ResearchNeurological diseases and metabolism

X-linked adrenoleukodystrophy: Clinical, metabolic, genetic and pathophysiological aspects

Open access
Kemp, Stephan, Berger, Johannes, Aubourg, Patrick·2012·Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease

Abstract

X-linked adrenoleukodystrophy (X-ALD) is the most frequent peroxisomal disease. The two main clinical phenotypes of X-ALD are adrenomyeloneuropathy (AMN) and inflammatory cerebral ALD that manifests either in children or more rarely in adults. About 65% of heterozygote females develop symptoms by the age of 60years. Mutations in the ABCD1 gene affect the function of the encoded protein ALDP, an ATP-binding-cassette (ABC) transporter located in the peroxisomal membrane protein. ALDP deficiency impairs the peroxisomal beta-oxidation of very long-chain fatty acids (VLCFA) and facilitates their further chain elongation by ELOVL1 resulting in accumulation of VLCFA in plasma and tissues. While all patients have mutations in the ABCD1 gene, there is no general genotype-phenotype correlation. Environmental factors and a multitude of modifying genes appear to determine the clinical manifestation in this monogenetic but multifactorial disease. This review focuses on the clinical, biochemical, genetic and pathophysiological aspects of X-ALD.

Integrity signals

Registry

Crossref · 10.1016/j.bbadis.2012.03.012

Cites

107 of 107 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

0 of 80 cited sources checked · 0 supported · 0 flagged

  • Findingcitation

    A SNP has been identified in the promoter region of the ELOVL1 gene.

    “Interestingly, a SNP has been identified in the promoter region of the ELOVL1 (Kemp and Aubourg, unpublished observations).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Kemp and Aubourg, unpublished observations

      Not checked in the free run.

  • Premisecitation

    The real incidence of AMN in heterozygous women is likely to be close to 65% by the age of 60 years.

    “the real incidence of AMN in heterozygous women is likely to be close to 65% by the age of 60 years (Engelen et al., manuscript in preparation).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Engelen et al., manuscript in preparation

      Not checked in the free run.

  • Premisenone given

    About 10% of boys with cerebral ALD may not enter into the active inflammatory and devastating stage of the disease.

    “About 10% of boys with cerebral ALD may not enter into the active inflammatory and devastating stage of the disease.”
    Quote in the paperNot a substantial claim
  • Premisecitation

    VLCFA (in particular C26:0) are elevated in readily accessible materials like blood cells and plasma of X-ALD patients.

    “The discovery by Moser and coworkers that VLCFA (in particular C26:0) are also elevated in readily accessible materials like blood cells and plasma of X-ALD patients has been of crucial importance for the diagnosis of X-ALD [24].”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [24] 24. H.W. Moser, A.B. Moser, K.K. Frayer, W. Chen, J.D. Schulman, B.P. O'Neill, Y. Kishimoto, Adrenoleukodystrophy: increased plasma content of saturated very long chain fatty acids, Neurology 31 (1981) 1241-1249. source

      Not checked in the free run.

  • Premisenone given

    A newborn male with an ABCD1 gene mutation has a 35-40% risk to develop cerebral ALD between the ages of 5 and 12 years.

    “A newborn male with an ABCD1 gene mutation has a 35-40% risk to develop cerebral ALD between the ages of 5 and 12 years.”
    Quote in the paperNot a substantial claim
  • May combine two claims. 14
  • Classified as probably not a substantial claim. 10
  • May combine two claims.

    Premisecitation

    The first symptoms of AMN usually appear when male patients are between 20 and 30 years but usually before the fifth decade.

    “The first symptoms of AMN usually appear when male patients are between 20 and 30 years but usually before the fifth decade [3].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [3] 3. B.M. van Geel, L. Bezman, D.J. Loes, H.W. Moser, G.V. Raymond, Evolution of phe- notypes in adult male patients with X-linked adrenoleukodystrophy, Ann. Neu- rol. 49 (2001) 186-194.

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given

    35% of patients with AMN have a marked progression of their myelopathy within the first 3-5 years of clinical symptom onset.

    “However, 35% of patients with AMN have a marked progression of their myelopathy within the first 3-5 years of clinical symptom onset.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisenone given

    AMN males develop progressive stiffness and weakness of the legs, impaired vibration sense in the lower limbs, sphincter disturbances and impotence.

    “AMN males develop progressive stiffness and weakness of the legs, impaired vibration sense in the lower limbs, sphincter disturbances and impotence.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given

    Addison's disease is present in less than 1% of heterozygous women.

    “Addison's disease is present in less than 1% of heterozygous women.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationnone given

    Cerebral ALD presents usually with a rapidly progressive inflammatory demyelination within the brain resulting in severe cognitive and neurologic disability, a vegetative state within two to five years of clinical symptom onset and death thereafter.

    “Cerebral ALD presents usually with a rapidly progressive inflammatory demyelination within the brain resulting in severe cognitive and neurologic disability, a vegetative state within two to five years of clinical symptom onset and death thereafter.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisenone given

    Adrenocortical insufficiency (Addison's disease) is present in approximately two-thirds of males with AMN but is often latent without evident clinical manifestations.

    “Adrenocortical insufficiency (Addison's disease) is present in approximately two-thirds of males with AMN but is often latent without evident clinical manifestations, including melanoderma.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given

    In two-thirds of AMN patients, the neurologic disability progresses slowly.

    “In two-thirds of AMN patients, the neurologic disability progresses slowly.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    A Dutch kindred has been described in which all heterozygous females are asymptomatic and all X-ALD males are either still asymptomatic at old age or show mild phenotypes including gonadal insufficiency and AMN without cerebral involvement.

    “For example, a Dutch kindred has been described in which all heterozygous females are asymptomatic and all X-ALD males are either still asymptomatic at old age or show mild phenotypes including gonadal insufficiency and AMN without cerebral involvement [64].”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [64] 64. S. Kemp, A. Pujol, H.R. Waterham, B.M. van Geel, C.D. Boehm, G.V. Raymond, G.R. Cutting, R.J. Wanders, H.W. Moser, ABCD1 mutations and the X-linked adreno- leukodystrophy mutation database: role in diagnosis and clinical correlations, Hum. Mutat. 18 (2001) 499-515. source

      Not checked in the free run.

  • May combine two claims.

    Premisenone given

    All X-ALD patients have mutations within the ABCD1 gene, which confirmed that this is the genetic cause of X-ALD.

    “All X-ALD patients have mutations within the ABCD1 gene, which confirmed that this is the genetic cause of X-ALD.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationcitation

    VLCFA cause cell death by a combination of a disturbance in calcium homeostasis and mitochondrial dysfunction, but not primarily via ROS-production.

    “Based on the results obtained the authors concluded that VLCFA cause cell death by a combination of a disturbance in calcium homeostasis and mitochondrial dysfunction, but not primarily via ROS-production.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationcitation

    ALDP deficiency in X-ALD impairs peroxisomal VLCFA beta-oxidation and raises cytosolic VLCFacyl-CoA levels.

    “ALDP deficiency in X-ALD has two major effects: 1) it impairs peroxisomal VLCFA beta-oxidation and 2) it raises cytosolic VLCFacyl-CoA levels [50].”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [50] 50. R. Ofman, I.M. Dijkstra, C.W. van Roermund, N. Burger, M. Turkenburg, A. van Cruchten, C.E. van Engen, R.J. Wanders, S. Kemp, The role of ELOVL1 in very long-chain fatty acid homeostasis and X-linked adrenoleukodystrophy, EMBO Mol. Med. 2 (2010) 90-97. source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    The affected members of this kindred carry a missense mutation p.Arg389His that results in stable ALDP correctly localized to peroxisomes.

    “The affected members of this kindred carry a missense mutation p.Arg389His that results in stable ALDP correctly localized to peroxisomes.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [64] 64. S. Kemp, A. Pujol, H.R. Waterham, B.M. van Geel, C.D. Boehm, G.V. Raymond, G.R. Cutting, R.J. Wanders, H.W. Moser, ABCD1 mutations and the X-linked adreno- leukodystrophy mutation database: role in diagnosis and clinical correlations, Hum. Mutat. 18 (2001) 499-515. source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    ELOVL1 knockdown reduces elongation of C22:0 to C26:0 and lowers C26:0 levels in X-ALD fibroblasts.

    “Importantly, ELOVL1 knockdown reduces elongation of C22:0 to C26:0 and lowers C26:0 levels in X-ALD fibroblasts [50].”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [50] 50. R. Ofman, I.M. Dijkstra, C.W. van Roermund, N. Burger, M. Turkenburg, A. van Cruchten, C.E. van Engen, R.J. Wanders, S. Kemp, The role of ELOVL1 in very long-chain fatty acid homeostasis and X-linked adrenoleukodystrophy, EMBO Mol. Med. 2 (2010) 90-97. source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    Among 489 X-ALD families tested at the Kennedy Krieger Institute, 4.1% of the patients were affected by a de novo mutation in the index case, which indicates that the mutation occurred in the germ line.

    “Wang and coworkers reported that among 489 X-ALD families tested at the Kennedy Krieger Institute, 4.1% of the patients were affected by a de novo mutation in the index case, which indicates that the mutation occurred in the germ line [62].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [62] 62. Y. Wang, R. Busin, C. Reeves, L. Bezman, G. Raymond, C.J. Toomer, P.A. Watkins, A. Snowden, A. Moser, S. Naidu, G. Bibat, S. Hewson, K. Tam, J.T. Clarke, L. Charnas, G. Stetten, B. Karczeski, G. Cutting, S. Steinberg, X-linked adrenoleuko- dystrophy: ABCD1 de novo mutations and mosaicism, Mol. Genet. Metab. 104 (2011) 160-166.

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    Abcd1 knockout mice display oxidative damage to proteins in the spinal cord already at the age of 3 months, long before the first neuropathological lesions in the spinal cord at around 16 months of age and clinical signs at 20 months of age.

    “Interestingly, Abcd1 knockout mice display oxidative damage to proteins in the spinal cord already at the age of 3 months [39], long before the first neuropathological lesions in the spinal cord at around 16 months of age and clinical signs at 20 months of age [40].”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites [39] 39. S. Fourcade, J. Lopez-Erauskin, J. Galino, C. Duval, A. Naudi, M. Jove, S. Kemp, F. Villarroya, I. Ferrer, R. Pamplona, M. Portero-Otin, A. Pujol, Early oxidative dam- age underlying neurodegeneration in X-adrenoleukodystrophy, Hum. Mol. Genet. 17 (2008) 1762-1773. source

      Not checked in the free run.

    • cites [40] 40. A. Pujol, C. Hindelang, N. Callizot, U. Bartsch, M. Schachner, J.L. Mandel, Late onset neurological phenotype of the X-ALD gene inactivation in mice: a mouse model for adrenomyeloneuropathy, Hum. Mol. Genet. 11 (2002) 499-505. source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationreasoning

    The small sample size in rare diseases is a general problem.

    “This is a general problem associated with rare diseases in which the sample size is relatively small, but nevertheless it likely provides evidence for a possible involvement in the molecular mechanism of X-ALD.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Many multifactorial diseases involve many rare genetic variant interactions.

    “This is the experience that is observed in many multifactorial diseases [81].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [81] 81. W. Bodmer, C. Bonilla, Common and rare variants in multifactorial susceptibility to common diseases, Nat. Genet. 40 (2008) 695-701. source

      Not checked in the free run.

  • Classified as probably not a substantial claim.

    Interpretationreasoning

    It is possible that the primary consequence of the loss of ALDP function in oligodendrocytes triggers progressive axonal damage without significant demyelination.

    “It is therefore possible that the primary consequence of the loss of ALDP function in oligodendrocytes triggers progressive axonal damage without significant demyelination.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Premisecitation

    The Abcd1 knockout mouse develops a phenotype that resembles AMN at 18-20 months of age, but no cerebral demyelination.

    “The Abcd1 knockout mouse develops a phenotype that resembles AMN at 18-20 months of age, but no cerebral demyelination [40].”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [40] 40. A. Pujol, C. Hindelang, N. Callizot, U. Bartsch, M. Schachner, J.L. Mandel, Late onset neurological phenotype of the X-ALD gene inactivation in mice: a mouse model for adrenomyeloneuropathy, Hum. Mol. Genet. 11 (2002) 499-505. source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    A deficiency in ALDP impairs peroxisomal VLCFA beta-oxidation but also raises cytosolic levels of C24:0/C26:0-CoA which are substrate for further elongation by ELOVL1.

    “A deficiency in ALDP impairs peroxisomal VLCFA beta-oxidation but also raises cytosolic levels of C24:0/C26:0-CoA which are substrate for further elongation by ELOVL1 (adapted from[51]).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [51] 51. S. Kemp, R. Wanders, Biochemical aspects of X-linked adrenoleukodystrophy, Brain Pathol. 20 (2010) 831-837. source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    A decrease in plasmalogen levels could alter the transport of cholesterol, which is an essential component of the myelin sheath.

    “A decrease in plasmalogen levels could alter the transport of cholesterol which is an essential component of the myelin sheath [96], it could increase the oxidation of cholesterol in phospholipid bilayers [97] which in turn may result in cytotoxic, oxidative and inflammatory activities [98] and increased oxidative stress in glial cells [99].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [96] 96. N.J. Munn, E. Arnio, D. Liu, R.A. Zoeller, L. Liscum, Deficiency in ethanolamine plas- malogen leads to altered cholesterol transport, J. Lipid Res. 44 (2003) 182-192.

      Not checked in the free run.

  • Classified as probably not a substantial claim.

    Premisecitation

    A decrease in plasmalogen levels could increase the oxidation of cholesterol in phospholipid bilayers.

    “A decrease in plasmalogen levels could alter the transport of cholesterol which is an essential component of the myelin sheath [96], it could increase the oxidation of cholesterol in phospholipid bilayers [97] which in turn may result in cytotoxic, oxidative and inflammatory activities [98] and increased oxidative stress in glial cells [99].”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [97] 97. R. Maeba, N. Ueta, Ethanolamine plasmalogens prevent the oxidation of choles- terol by reducing the oxidizability of cholesterol in phospholipid bilayers, J. Lipid Res. 44 (2003) 164-171.

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationreasoning

    Polymorphisms in genes involved in the different pathways that promote or counteract this pro-inflammatory stage may also play an important role in advancing or preventing the transition from a proinflammatory to a full-blown neuroinflammatory stage.

    “Polymorphisms in genes involved in the different pathways that promote or counteract this pro-inflammatory stage may also play an important role in advancing or preventing the transition from a proinflammatory to a full-blown neuroinflammatory stage.”
    Quote in the paperNot a substantial claim
23 of 23
  • The paper relies on this without support.

    Not all X-ALD males develop cerebral demyelination with severe neuroinflammation.

    “Not all X-ALD males develop cerebral demyelination with severe neuroinflammation.”
  • The paper relies on this without support.

    There is an absence of general genotype-phenotype correlation in X-ALD.

    “Because of the absence of general genotype-phenotype correlation in X-ALD, it is likely that a combination of genetic, epigenetic and environmental factors play an essential role as triggers for the development of cerebral ALD.”
  • The paper relies on this without support.

    There is no correlation between the levels of VLCFA in plasma or fibroblasts and the X-ALD phenotype.

    “Even though there is no correlation between the levels of VLCFA in plasma or fibroblasts and the X-ALD phenotype, VLCFA are highly elevated in myelinspecific lipid species [18,[26][27][28][29].”
  • The paper relies on this without support.

    A significant number of heterozygous women develop AMN in adulthood.

    “A significant number of heterozygous women develop AMN in adulthood and prenatal diagnosis of a female fetus to establish whether the fetus has X-ALD may be offered on an individual basis.”
4 of 4

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • X-ALD is primarily caused by mutations in the ABCD1 gene located on the X chromosome (Xq28), which spans 19.9 kb and 10 exons.

    “X-ALD is primarily caused by mutations in the ABCD1 gene located on the X chromosome (Xq28), which spans for 19.9 kb and 10 exons (11).”

    From X-linked adrenoleukodystrophy and primary adrenal insufficiency (2023) · cites this paper as [11]

    Section 3, “Genetic aspects of X-ALD” (page not available), identifies ABCD1 mutations as the genetic cause of X-ALD, describes X-linked inheritance, and states that the gene covers 19.9 kb and contains 10 exons. Our copy does not specify the Xq28 location, so that part of the claim is not supported by this source. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • In approximately 85% of individuals with clinical symptoms, brain MRI shows a characteristic pattern of symmetric confluent hyperintense lesions in T2 and FLAIR images, usually first appearing in the parieto-occipital region of both hemispheres.

    “In approximately 85% of the individuals with clinical symptoms, brain magnetic resonance imaging (MRI) shows a characteristic pattern of symmetric confluent hyperintense lesions in T2 and FLAIR images, usually first appearing in the parieto-occipital region of both hemispheres.”

    From X-linked adrenoleukodystrophy and primary adrenal insufficiency (2023) · cites this paper as [11]

    Section 1.2 (page unavailable) describes cerebral ALD lesions as hyperintense on T2 and FLAIR MRI and says they usually begin in the corpus callosum before extending into parieto-occipital or, alternatively, frontal white matter. It does not give an 85% figure for symptomatic individuals or describe the lesions as necessarily symmetric and confluent; it explicitly says they can be asymmetric. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • CerALD is the most severe form of X-ALD, typically affecting young boys between 4 and 8 years of age, and is characterized by progressive inflammatory demyelination in the cerebral white matter.

    “This is the most severe form of X-ALD, typically affecting young boys (typically between 4 and 8 years of age). It is characterized by progressive inflammatory demyelination in the cerebral white matter.”

    From X-linked adrenoleukodystrophy and primary adrenal insufficiency (2023) · cites this paper as [11]

    Section 1.2 calls cerebral ALD the most severe X-ALD phenotype and describes demyelination of cerebral white matter that can become rapidly progressive and inflammatory. It gives ages 5–12 years, not 4–8, and notes that lesions are initially noninflammatory. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • AMN is the most common form of adult-onset X-ALD.

    “AMN is the most common form of adult-onset X-ALD.”
  • AMN primarily affects hemizygous males, although heterozygous females can also be affected to a lesser extent, with similar but later progression usually after the 4th or 5th decade of life.

    “It primarily affects hemizygous males, although heterozygous females can also be affected to a lesser extent, with a similar but later progression of symptoms (usually after the 4th-or 5th decade of life).”

Cites

Flagged first, then by citations

1 of the 108 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. Smith, 1991, A genetic basis for the multiple phenotypes of X-linked adrenoleukodystrophy, Am. J. Hum. Genet., 49, 165

Cited by

Sorted by citations

Authors
Kemp, S., Berger, J., & Aubourg, P.
Affiliations
  • Amsterdam UMC Location University of Amsterdam (NL)
  • Medical University of Vienna (AT)
  • Inserm (FR)
Corresponding author
Kemp, Stephan
Venue
Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease
Publisher
Elsevier BV
Published
2012-09
Volume
1822
Issue
9
Pages
1465-1474
ISSN
0925-4439 (ISSN-L)
OpenAlex
W2073937441
Cited by
283
References
108
Citations by year
2026: 11 · 2025: 10 · 2024: 24 · 2023: 16 · 2022: 19 · 2021: 29 · 2020: 15 · 2019: 22 · 2018: 19 · 2017: 23 · 2016: 16 · 2015: 28 · 2014: 30 · 2013: 15 · 2012: 5
FWCI
2.99
Type
journal article
Language
en
Open access
Locations
  • Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease (publishedVersion)
  • PubMed (publishedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
  • Pure Amsterdam UMC (submittedVersion)
Funders
  • Netherlands Organization for Scientific Research (91786328)
  • Vienna Science and Technology Fund (LS154)
  • INSERM
  • European Union Framework Programme 7 (241622)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
  • Health Sciences › Medicine › Physiology › Lysosomal Storage Disorders Research
  • Life Sciences › Neuroscience › Neurology › Neurological diseases and metabolism
Keywords
X-linked adrenoleukodystrophy, ABCD1 gene, ALDP, peroxisomal disorders, very long chain fatty acids, peroxisomal beta-oxidation, ELOVL1, adrenomyeloneuropathy, genotype-phenotype correlation, peroxisomal membrane proteins, disease pathophysiology
MeSH terms
ATP Binding Cassette Transporter, Subfamily D, Member 1, Adrenoleukodystrophy, Animals, Brain, Fatty Acids, Female, Humans, Mutation, Phenotype, Pregnancy, Prenatal Diagnosis, ATP-Binding Cassette Transporters

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Claims read by deepseek-v4.1-flash under definition version 3 (extract-v3) on 2026-10-11.

Classified by jev-1.13-20260917 (gold-guideline-v0.2) on 2026-10-11.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review