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ORPHA:217266

BNAR syndrome

low confidenceDisorder

Also known as: Bifid nose with or without anorectal and renal anomalies

Publications

804

Trials

0

Interventional, condition-specific

Researchers

343

Distinct authors in sample

Gene link

FREM1

Strong

Readiness

3/6

Stages with a signal

Clinical definition (Orphanet)

BNAR syndrome is a very rare multiple anomaly syndrome characterized by a bifid nose (with bulbous nasal tip but not associated with hypertelorism) with or without the presence of anal defects (i.e. anteriorly placed anus, rectal stenosis or atresia) and renal (unilateral or bilateral renal agenesis) and without . BNAR syndrome is phenotypically related to Fraser syndrome and oculotrichoanal syndrome.

How rare: <1 / 1 000 000 — fewer than one in a million. In a city the size of Kolkata, that might mean on the order of fifteen people.

Orphanet entry

Cross-references

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

Additional Mondo synonyms (1)

bifid nose with or without anorectal and renal anomalies

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.”

3/6 stages with a signal

No matched interventional trial; the gene is known and literature exists — preclinical or natural-history work may still be the practical next step.

  1. Gene identifiedPresent

    Strong — FREM1

  2. LiteraturePresent

    804 matched papers (601 in last 10 years) Source

  3. Phenotype characterisedPresent

    24 HPO annotations (e.g. Anal stenosis; Anteriorly placed anus; Abnormal fifth toe morphology) Source

  4. Animal modelNot found

    No Alliance genotype “model of” associations via Monarch for these Mondo IDs

  5. Orphan designationNot found

    No FDA or EMA orphan-drug designation matched this disease via UMLS or preferred name Source

  6. Interventional trialNot found

    No matched interventional trial under our ClinicalTrials.gov rules

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?

Yes — we know a specific gene responsible (FREM1).

GenCC classification: Strong.

Phenotypes (Monarch / HPO)

24

Associated phenotypes · MONDO:0012165

  • Anal stenosis
  • Anteriorly placed anus
  • Abnormal fifth toe morphology
  • Renal agenesis
  • Abnormal respiratory system morphology

Showing 5 of 24 — open Monarch for the full list.

Animal models (Monarch / Alliance)

None returned for this Mondo ID. Empty here is not proof that no model organism work exists under another name or gene.

Monarch fetch 2026-07-29

Therapies

Designations, candidates, and chemicals

FDA OOPD and EMA orphan designations, Open Targets clinical candidates, and CTD chemical associations via MyDisease.info. These never change the interventional-trial headline.

Orphan designation (FDA · EMA)

No designation matched this disease via UMLS or preferred name on the FDA OOPD mirror or EMA orphan register. Absence here is not proof that none exists under another wording.

Open Targets candidates

No drugs or clinical candidates returned for this Mondo ID on Open Targets.

CTD chemicals (MyDisease.info)

No CTD chemical associations returned for this Mondo ID.

Literature

Is anyone studying this?

804

804 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=3967) is 59.

804 papers since the earliest indexed year in this search — median last-10-year count for a rare disease in this dataset is 59 (publications denominator n=3967).

601 in the last 10 years · low confidence

Phrase hits: 36 · MeSH hits: 1

Open Europe PMC search

Who's working on it?

343

Distinct author names in 36 sampled papers — named people below.

Who's working on it?

No interventional trial matched this name; these authors publish on it in the sampled literature — a practical starting point for contact.

  1. 01
    Liu Y4 papers · 2026

    Department of Genetics, Jiangxi Maternal and Child Health Hospital, 330006, Nanchang, China.

    Papers in Europe PMC
  2. 02
    Beck TF3 papers · 2015

    Departments of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, United States of America.

    Papers in Europe PMC
  3. 03
    Schanze D3 papers · 2021

    Institute of Human Genetics, University Hospital Magdeburg Leipziger Str. 44 39120 Magdeburg Germany.

    Papers in Europe PMC
  4. 04
    Scott DA3 papers · 2015
    Papers in Europe PMC
  5. 05
    Tasic V3 papers · 2025

    Department of Pediatric Nephrology, University Children's Hospital, Skopje, Macedonia; and.

    Papers in Europe PMC
  6. 06
    Zenker M3 papers · 2021

    Institute of Human Genetics, University Hospital Magdeburg Leipziger Str. 44 39120 Magdeburg Germany.

    Papers in Europe PMC
  7. 07
    Cox TC2 papers · 2011
    Papers in Europe PMC
  8. 08
    Feingold E2 papers · 2018

    Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, 15261, USA.

    Papers in Europe PMC
  9. 09
    Hildebrandt F2 papers · 2018

    Divison of Nephrology, Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts Friedhelm.Hildebrandt@childrens.harvard.edu.

    Papers in Europe PMC
  10. 10
    Justice MJ2 papers · 2013
    Papers in Europe PMC

Clinical research

Is a treatment being tested?

0

interventional trials for this specific condition

No interventional trial testing a treatment matched this specific condition name on ClinicalTrials.gov (observational studies and pan-disease registries are listed separately when present).

Data as of 11 September 2026 · last trial check 11 September 2026

No matched interventional trials. This is true for 77.2% of diseases in the trials denominator (5501 of 7126). Here are the researchers publishing on it.

low confidence · 38.6th percentile (trials denominator)

Recruiting interventional trials

From the matched ClinicalTrials.gov set

No interventional trial testing a treatment was found for this specific condition name on ClinicalTrials.gov.

See who's working on it — people publishing on this disease are often the practical next contact when no trial is listed.

Other registries (secondary)

Broader net from EU CTIS, ISRCTN, and ICTRP when available — deduped against ClinicalTrials.gov IDs already counted above. Dual-model LLM relevance gates what we keep. These rows are not added to the interventional headline.

raw 0 · after dedupe 0 · already on CT.gov 0 · kept 0 · parent 0 · uncertain 0 · dropped 0 · fetched 2026-07-30

Source notes: ictrp: Error: ICTRP public search unavailable (WHO portal is SPA-only; SOAP needs partnership). Tried: https://apps.who.int/tri

No secondary-registry studies passed dual-model relevance for this condition name (after dedupe).

Where to find support

Condition-specific patient organisations, when Orphanet lists them, are on the disease’s Orphanet page. We also link umbrella groups that support undiagnosed and ultra-rare families.

Orphanet entry for BNAR syndrome — check Associations / patient organisations on that page.

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.

("BNAR syndrome" OR "Bifid nose with or without anorectal and renal anomalies") OR (MESH:"Bifid Nose With Or Without Anorectal And Renal Anomalies") OR ("FREM1" OR "FREM1 syndrome" OR "FREM1-related" OR "BNAR" OR "BNAR-related")

Run this search on Europe PMC

MeSH descriptor terms unioned into the query: Bifid Nose With Or Without Anorectal And Renal Anomalies

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

"BNAR syndrome" OR "Bifid nose with or without anorectal and renal anomalies"

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

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

Run this search on ClinicalTrials.gov

Confidence reasoning

  • Preferred label is short or not clearly distinctive
  • No synonyms dropped by stoplist
  • No label/synonym collisions with other diseases in this corpus
  • Publication count (804) is implausibly high for prevalence class "<1 / 1 000 000" — treat as possible over-matching, not a measure of research intensity

Ingested 2026-07-27T09:46:27.363Z