Cited by 375Metabolism and Genetic DisordersCholesterol and Lipid MetabolismPediatric Hepatobiliary Diseases and Treatments

Identification of a new inborn error in bile acid synthesis: mutation of the oxysterol 7alpha-hydroxylase gene causes severe neonatal liver disease.

Open access
Setchell, K D, Schwarz, M, O'Connell, N C, Lund, E G, Davis, D L, Lathe, R, Thompson, H R, Weslie Tyson, R +2 more·1998·Journal of Clinical Investigation

Abstract

We describe a metabolic defect in bile acid synthesis involving a deficiency in 7alpha-hydroxylation due to a mutation in the gene for the microsomal oxysterol 7alpha-hydroxylase enzyme, active in the acidic pathway for bile acid synthesis. The defect, identified in a 10-wk-old boy presenting with severe cholestasis, cirrhosis, and liver synthetic failure, was established by fast atom bombardment ionization-mass spectrometry, which revealed elevated urinary bile acid excretion, a mass spectrum with intense ions at m/z 453 and m/z 510 corresponding to sulfate and glycosulfate conjugates of unsaturated monohydroxy-cholenoic acids, and an absence of primary bile acids. Gas chromatography-mass spectrometric analysis confirmed the major products of hepatic synthesis to be 3beta-hydroxy-5-cholenoic and 3beta-hydroxy-5-cholestenoic acids, which accounted for 96% of the total serum bile acids. Levels of 27-hydroxycholesterol were > 4,500 times normal. The biochemical findings were consistent with a deficiency in 7alpha-hydroxylation, leading to the accumulation of hepatotoxic unsaturated monohydroxy bile acids. Hepatic microsomal oxysterol 7alpha-hydroxylase activity was undetectable in the patient. Gene analysis revealed a cytosine to thymidine transition mutation in exon 5 that converts an arginine codon at position 388 to a stop codon. The truncated protein was inactive when expressed in 293 cells. These findings indicate the quantitative importance of the acidic pathway in early life in humans and define a further inborn error in bile acid synthesis as a metabolic cause of severe cholestatic liver disease.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1172/jci2962

Cites

85 of 85 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

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?

  • Cyp7b1 knockout selectively reduced TCDCA.

    “whereas Cyp7b1 KO (sgCyp7b1) selectively reduced the presence of TCDCA (22)”

    From Bile acid synthesis impedes tumor-specific T cell responses during liver cancer (2025) · cites this paper as [22]

    The Discussion reports that chenodeoxycholic acid was low in a patient with a CYP7B1 mutation, at 6% of the level in normal adult liver tissue. But the paper studies a human mutation, not a Cyp7b1 knockout, and does not show a selective reduction in taurochenodeoxycholic acid (TCDCA); the biochemical findings also describe low cholic acid. (LLM, conf=0.86)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. [25]25. Setchell, K.D.R., D. Kritchevsky, and P.P. Nair. 1988. The Bile Acids. Chemistry, Physiology and Metabolism. Volume 4: Methods and Applications. Plenum Press, New York/London. 582 pp.
  2. [65]65. Hoshita, T. 1985. Bile alcohols and primative bile acids. In Sterols and Bile Acids. H. Danielsson and J. Sjovall, editors. Elsevier Science Publishers BV, Amsterdam. 279-302.

Cited by

Sorted by citations

Authors
Setchell, K. D., Schwarz, M., O'Connell, N. C., Lund, E. G., Davis, D. L., Lathe, R., Thompson, H. R., Weslie Tyson, R., Sokol, R. J., & Russell, D. W.
Affiliations
  • Cincinnati Children's Hospital Medical Center (US)
  • The University of Texas Southwestern Medical Center (US)
  • University of Edinburgh (GB)
  • University of Colorado Denver (US)
Venue
Journal of Clinical Investigation
Published
1998-11-01
Volume
102
Issue
9
Pages
1690-1703
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2123957814
Cited by
375
References
85
Citations by year
2026: 12 · 2025: 12 · 2024: 12 · 2023: 12 · 2022: 10 · 2021: 14 · 2020: 7 · 2019: 12 · 2018: 14 · 2017: 14 · 2016: 8 · 2015: 6 · 2014: 13 · 2013: 12 · 2012: 10
FWCI
10.88
Type
journal article
Language
en
Open access
Licence
other-oa
Locations
  • Journal of Clinical Investigation (publishedVersion, other-oa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Edinburgh Research Explorer (University of Edinburgh) (submittedVersion, other-oa)
Funders
  • National Organization for Rare Disorders
  • Deutsche Forschungsgemeinschaft
  • National Institutes of Health (HL20948, RR00069)
  • Directorate for Biological Sciences
  • Medical Research Council
  • National Heart, Lung, and Blood Institute (HL-20948, P01HL020948)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01 DK-38446, R01DK038446)
  • National Center for Research Resources (RROOO69, M01RR000069)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
  • Health Sciences › Medicine › Surgery › Pediatric Hepatobiliary Diseases and Treatments
Keywords
neonatal cholestasis, liver cirrhosis, 27-hydroxycholesterol, stop codon mutation, cholestatic liver disease
MeSH terms
Cytochrome P450 Family 7, Amino Acid Sequence, Animals, Base Sequence, Bile Acids and Salts, Cell Line, Transformed, Cytochrome P-450 Enzyme System, Cricetinae, Humans, Infant, Liver, Liver Diseases, Male, Metabolism, Inborn Errors, Microsomes, Liver, Molecular Sequence Data, Mutation, Steroid Hydroxylases, Sterols, Liver Transplantation, CHO Cells, DNA, Complementary, Cholic Acid

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.

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