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ORPHA:617304

Amniotic fluid embolism

low confidenceDisorder

Publications

2,822

Trials

1

Interventional, condition-specific

Researchers

1,061

Distinct authors in sample

Gene link

—

Readiness

2/6

Stages with a signal

Clinical definition (Orphanet)

A rare obstetric condition characterized by entry of amniotic fluid and fetal elements into the maternal circulation, causing an emergency situation with sudden cardiovascular collapse, disseminated intravascular coagulation, and high lethality. In most instances it occurs during labor, cesarean delivery, or within 30 minutes postpartum. Patients present acute dyspnea and cough, acute hypotension, with altered mental status and , hypoxia and cyanosis, coagulopathy, severe hemorrhage, uterine atony, acute pulmonary hypertension, and cardiac arrest.

How rare: How common this is has not been clearly measured.

Orphanet entry

Cross-references

Joined from Mondo / Orphanet. MeSH labels may enter searches; UMLS / OMIM / NCIT are stored for reference.

Research stages

Trial readiness signals

Where this condition sits on an open-data research pipeline — not how close a treatment is, and not medical advice. Empty stages often mean “not in these databases under this Mondo ID,” not “impossible.”

2/6 stages with a signal

An interventional trial matched this condition name on ClinicalTrials.gov — see trials below.

  1. Gene identifiedNot found

    No GenCC disease–gene assertion in this build

  2. LiteraturePresent

    2,822 matched papers (1,445 in last 10 years) Source

  3. Phenotype characterisedNot checked

    Not yet enriched from Monarch / HPO

  4. Animal modelNot checked

    Not yet enriched from Monarch / Alliance

  5. Orphan designationNot checked

    FDA/EMA orphan-drug designation not enriched yet

  6. Interventional trialPresent

    1 matched on ClinicalTrials.gov

Biology

Genes and phenotypes

Gene–disease validity from GenCC, plus phenotypes and animal models joined from Monarch Initiative via Mondo ID — not a clinical diagnosis aid.

Do we know what causes it?

Not yet — the cause hasn't been pinned down in GenCC.

No strong gene–disease assertion joined for this Orphanet entity.

Phenotypes (Monarch / HPO)

Not enriched in this build — Monarch phenotype joins were not run for this record.

Animal models (Monarch / Alliance)

Not enriched in this build.

Literature

Is anyone studying this?

2,822

2,822 papers have been published on this condition. That is a real research literature — still far smaller than common diseases (breast cancer: over 700,000 papers). Median papers in the last 10 years for a rare disease in this dataset (publications denominator n=5449) is 41.

2,822 papers since the earliest indexed year in this search — median last-10-year count for a rare disease in this dataset is 41 (publications denominator n=5449).

1,445 in the last 10 years · low confidence

Phrase hits: 2,822 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

1,061

Distinct author names in 200 sampled papers — named people below.

Who's working on it?

People publishing on this condition (sampled Europe PMC records). Affiliation is the most recent found in that sample.

  1. 01
    Oda T5 papers · 2026

    Department of Obstetrics & Gynecology, Hamamatsu University School of Medicine, 1-20-1, Handayama, Higashi-ku, Hamamatsu, 431-3192, Japan. tomoakingdom@outlook.jp.

    Papers in Europe PMC
  2. 02
    Itoh H4 papers · 2024

    Department of Obstetrics & Gynecology, Hamamatsu University School of Medicine, 1-20-1, Handayama, Higashi-ku, Hamamatsu, 431-3192, Japan.

    Papers in Europe PMC
  3. 03
    Kanayama N4 papers · 2024

    Department of Obstetrics & Gynecology, Hamamatsu University School of Medicine, 1-20-1, Handayama, Higashi-ku, Hamamatsu, 431-3192, Japan.

    Papers in Europe PMC
  4. 04
    Li Y4 papers · 2025

    Department of Pathology, Xi'an People's Hospital (Xi'an No.4 hospital), Xi'an, 710004, People's Republic of China.

    Papers in Europe PMC
  5. 05
    Liu X4 papers · 2026

    The Second Obstetrics Department, Gansu Provincial Maternity and Child Health Hospital/Gansu Provincial General Hospital, Lanzhou, Gansu Province, China.

    Papers in Europe PMC
  6. 06
    Ma X4 papers · 2026

    Department of Critical Care Medicine, Weifang People's Hospital, Shandong Second Medical University, Weifang, China.

    Papers in Europe PMC
  7. 07
    Tamura N4 papers · 2024

    Department of Obstetrics & Gynecology, Hamamatsu University School of Medicine, 1-20-1, Handayama, Higashi-ku, Hamamatsu, 431-3192, Japan.

    Papers in Europe PMC
  8. 08
    Wang Y4 papers · 2026

    Department of Laboratory Medicine, West China Second University Hospital, Sichuan University, Chengdu, People's Republic of China.

    Papers in Europe PMC
  9. 09
    Zhang X4 papers · 2025

    Department of Anesthesiology, Peking University Third Hospital, Beijing, 100191, People's Republic of China.

    Papers in Europe PMC
  10. 10
    Collins PW3 papers · 2026

    Department of Haematology, University Hospital of Wales, Cardiff and Vale University Health Board, Heath Park, Cardiff, UK.

    Papers in Europe PMC

Clinical research

Is a treatment being tested?

1

interventional trials for this specific condition

1 interventional trial matched this specific condition name; none in our sample are currently recruiting.

Data as of 27 July 2026

1 interventional trial — more than 73% of diseases in the trials denominator have none at all (5114 of 7003; this disease is at the 76.8th percentile).

low confidence · 76.8th percentile (trials denominator)

Recruiting interventional trials

From the matched ClinicalTrials.gov set

1 interventional trials matched after quoted-phrase search and title/condition post-filter.

No currently recruiting studies in the matched set. Open the same search on ClinicalTrials.gov.

Observational and natural-history studies

3 observational studies match this condition. These do not test a treatment and are not counted in the interventional-trial headline, but they are genuine research: natural-history work often defines the endpoints needed for a future rare-disease trial, and families may be able to enroll.

Recruiting or not-yet-recruiting

Open the complete matched search on ClinicalTrials.gov

Where to find support

We do not yet link condition-specific patient organisations. These umbrella groups support undiagnosed and ultra-rare families:

India — NPRD

Last verified 2026-07-26

This ORPHAcode is not on our curated NPRD list (direct or Mondo-parent match). That does not decide clinical eligibility; families in India should ask a notified Centre of Excellence about current coverage.

Hand-curated for this project. ORPHAcode mappings are best-effort and may be incomplete or imprecise for umbrella categories. Parent (Mondo) matches mean the policy lists a broader category — confirm eligibility with a Centre of Excellence. Financial entitlements summarised from public policy statements and may change. This is not official government guidance.

How we counted this

Europe PMC query (preferred label + any corrected label + Orphanet and Mondo exact synonyms, stoplisted; unioned with resolved MeSH labels when available). UMLS / OMIM / NCIT cross-references are stored on the overview but are not added to the query string.

"Amniotic fluid embolism"

Run this search on Europe PMC

ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):

"Amniotic fluid embolism"

Interventional trials matched via: phrase (mesh = registered under a MeSH descriptor no name phrase would catch; recall-expansion = gene / selected parent terms used only for trials).

Study-type breakdown: 1 interventional · 3 observational · 0 expanded access. Only interventional studies enter the trial headline.

Query health: ok — strategies attempted: phrase; with hits: phrase

Run this search on ClinicalTrials.gov

Confidence reasoning

  • Preferred label is multi-word and distinctive
  • No synonyms dropped by stoplist
  • No label/synonym collisions with other diseases in this corpus
  • Publication count (2822) is extremely high with unknown/missing prevalence — treat as possible over-matching, not proven research intensity

Ingested 2026-07-27T19:05:48.162Z