Component

Rate of major congenital malformation

Rate of major congenital malformation. Species, exposure and limitations are retained in each linked claim.

1 recorded relationships. Experimental role, claim status and evidence remain attached to each record.

How nutrients influence it

Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.

How nutrients reach it in more than one step

Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.

Tracing routes…

What it does

Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.

Recorded relationships

What acts on it

  1. Among 192 pregnancies exposed to mebendazole and followed prospectively, 71.5% with first-trimester exposure, there was no increase in the rate of major malformations against a matched control group counselled for non-teratogenic exposure, 3.3% against 1.7%, though there was a higher rate of elective termination in the exposed group at 11.5% against 1.6%, and the authors conclude that mebendazole does not represent a major teratogenic risk in humans at the doses commonly used for pinworm.

    Mebendazole → Rate of major congenital malformation source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/mebendazole-research/12548230.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "08e6e832094453e69ff88f5daeb82e145cd70180f68658be2c0c30b686fd2fad", "start_char": 0, "end_char": 1183, "text_sha256": "08e6e832094453e69ff88f5daeb82e145cd70180f68658be2c0c30b686fd2fad"}
    experimental_model
    Prospective controlled cohort of 192 pregnancies followed by the Israeli Teratogen Information Service
    exposure
    Mebendazole exposure in pregnancy, 71.5% in the first trimester, against a matched non-teratogenic control group
    limitations
    A prospective cohort of 192 pregnancies, which can exclude a large risk but not a small one, at pinworm doses rather than the high doses used for echinococcosis or oncology.
    nutrient_topic
    Mebendazole research collection; topical membership is not evidence of a direct clinical effect, and mebendazole is recorded separately from albendazole, from the benzimidazole class and from its own crystal forms. · Mebendazole
    organism
    Human
    plain_language
    In nearly two hundred pregnancies there was no excess of birth defects, though many more of these pregnancies were ended by choice.
    primary_references
    [mbz-p12548230] Pregnancy outcome after gestational exposure to mebendazole: a prospective controlled cohort study. (2003). https://pubmed.ncbi.nlm.nih.gov/12548230/ DOI: 10.1067/mob.2003.79
    tissue_or_cell_type
    Pregnancy outcome

    Mebendazole: the tubulin it binds, why that is selective, the crystal form that decides whether any of it works, and the off-target that became an oncology programme (2026-09-22) · lines 615–626

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Prospective controlled cohort of 192 pregnancies followed by the Israeli Teratogen Information Service · source_derived_draft · unverified_draft

    ### mbz-no-major-teratogenic-signal Among 192 pregnancies exposed to mebendazole and followed prospectively, 71.5% with first-trimester exposure, there was no increase in the rate of major malformations against a matched control group counselled for non-teratogenic exposure, 3.3% against 1.7%, though there was a higher rate of elective termination in the exposed group at 11.5% against 1.6%, and the authors conclude that mebendazole does not represent a major teratogenic risk in humans at the doses commonly used for pinworm. Condition category: normal nutrient_topic: Mebendazole research collection; topical membership is not evidence of a direct clinical effect, and mebendazole is recorded separately from albendazole, from the benzimidazole class and from its own crystal forms. plain_language: In nearly two hundred pregnancies there was no excess of birth defects, though many more of these pregnancies were ended by choice. organism: Human tissue_or_cell_type: Pregnancy outcome experimental_model: Prospective controlled cohort of 192 pregnancies followed by the Israeli Teratogen Information Service limitations: A prospective cohort of 192 pregnancies, which can exclude a large risk but not a small one, at pinworm doses rather than the high doses used for echinococcosis or oncology. exposure: Mebendazole exposure in pregnancy, 71.5% in the first trimester, against a matched non-teratogenic control group evidence_span: {"source_cache": "artifacts/mebendazole-research/12548230.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "08e6e832094453e69ff88f5daeb82e145cd70180f68658be2c0c30b686fd2fad", "start_char": 0, "end_char": 1183, "text_sha256": "08e6e832094453e69ff88f5daeb82e145cd70180f68658be2c0c30b686fd2fad"} [mbz-p12548230] Pregnancy outcome after gestational exposure to mebendazole: a prospective controlled cohort study. (2003). https://pubmed.ncbi.nlm.nih.gov/12548230/ DOI: 10.1067/mob.2003.79
    Complete structured claim and evidence

In the sources

Preserved passages that mention this component, quoted exactly. Open one to read it in context.

    This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.

    Evidence, AI assistance and curation standards