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ORPHA:984

Pulmonary agenesis

high confidenceDisorder

Publications

579

67.5th percentile

Trials

0

Interventional, condition-specific

Researchers

950

Distinct authors in sample

Gene link

—

Readiness

1/6

Stages with a signal

Clinical definition (Orphanet)

A rare, non-syndromic respiratory or mediastinal characterized by unilateral complete absence of lung tissue, bronchi, and pulmonary vessels. It may be isolated or associated with malformations, most commonly with heart anomalies. Presentation is highly variable including airway narrowing, stridor, respiratory distress, recurrent respiratory tract infections, and pulmonary hypertension.

Orphanet entry

Cross-references

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

Additional Mondo synonyms (1)

congenital absence of lung

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.”

1/6 stages with a signal

Research-stage checklist from open sources (GenCC, literature, Monarch when enriched, ClinicalTrials.gov). Not a prognosis or care recommendation.

  1. Gene identifiedNot found

    No GenCC disease–gene assertion in this build

  2. LiteraturePresent

    579 matched papers (191 in last 10 years) Source

  3. Phenotype characterisedNot found

    No HPO disease–phenotype associations via Monarch for these Mondo IDs

  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?

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

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

Phenotypes (Monarch / HPO)

None returned for this Mondo ID. That often means “not linked under this ID,” not “no clinical features.”

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)

2 associated chemicals · 7 pathways. Therapeutic evidence is listed first when present — not a treatment recommendation.

  • Tretinoin · therapeutic
  • nitrofen · marker/mechanism

Pathways: Axon guidance; MicroRNAs in cancer; Developmental Biology; EPH-Ephrin signaling; EPHB-mediated forward signaling; Ephrin signaling; EPH-ephrin mediated repulsion of cells

MyDisease.info · MONDO:0020110

Literature

Is anyone studying this?

579

579 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.

579 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).

191 in the last 10 years · high confidence · 67.5th percentile (publications denominator)

Phrase hits: 579 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

950

Distinct author names in 200 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
    Morita K4 papers · 2025

    Department of Pediatric Surgery, Kobe Children's Hospital, 1-6-7 Minatojimaminami-machi, Chuo-ku, Kobe, Hyogo, 650-0047, Japan.

    Papers in Europe PMC
  2. 02
    Marchiori E3 papers · 2022

    . Universidade Federal do Rio de Janeiro, Rio de Janeiro (RJ) Brasil.

    Papers in Europe PMC
  3. 03
    Zhang L3 papers · 2025

    Department of Pediatric Intensive Care Unit, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, 518038, China.

    Papers in Europe PMC
  4. 04
    Zhang Y3 papers · 2025

    Department of Pediatric Intensive Care Unit, Shenzhen Children's Hospital Affiliated to China Medical University, No.7019, Yitian Road, Shenzhen, 518038, People's Republic of China.

    Papers in Europe PMC
  5. 05
    Boussoffara L2 papers · 2020

    Pulmonology Department, Tahar Sfar Hospital, Mahdia, Tunisia.

    Papers in Europe PMC
  6. 06
    Chen Y2 papers · 2024

    Guangzhou National Laboratory, Guangzhou, Guangdong Province, China.

    Papers in Europe PMC
  7. 07
    Das S2 papers · 2025

    Medical College Kolkata, Pulmonary Medicine, 88, College Street, Kolkata 700073, West Bengal, India.

    Papers in Europe PMC
  8. 08
    Eguchi Y2 papers · 2022

    Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.

    Papers in Europe PMC
  9. 09
    Fukuoka S2 papers · 2022

    Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.

    Papers in Europe PMC
  10. 10
    Garg A2 papers · 2018

    Department of Radiodiagnosis, Lok Nayak Hospital, New Delhi, India.

    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.

high 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 11 · after dedupe 11 · already on CT.gov 0 · kept 0 · parent 0 · uncertain 11 · dropped 0 · fetched 2026-07-29

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).

Uncertain / not reviewed (11)

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 Pulmonary agenesis — 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.

"Pulmonary agenesis" OR "congenital absence of lung" OR "congenital absence of the lung"

Run this search on Europe PMC

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

"Pulmonary agenesis" OR "congenital absence of lung" OR "congenital absence of the lung"

Study-type breakdown: 0 interventional · 0 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

Ingested 2026-07-26T16:07:17.368Z