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ORPHA:1497

X-linked complicated corpus callosum dysgenesis

high confidenceSubtype of disorder

Publications

2

12.1th percentile

Trials

1

Interventional, condition-specific

Researchers

19

Distinct authors in sample

Gene link

L1CAM

Strong

Readiness

3/6

Stages with a signal

Clinical definition (Orphanet)

A , X-linked, clinical subtype of L1 syndrome, characterized by variable spastic paraplegia, mild to moderate , and , hypoplasia or aplasia of the corpus callosum. In this subtype hydrocephalus, adducted thumbs, or absent speech are not observed.

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)

corpus callosum, partial agenesis of, X-linked recessive

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

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

  1. Gene identifiedPresent

    Strong — L1CAM

  2. LiteraturePresent

    2 matched papers (2 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?

Yes — we know a specific gene responsible (L1CAM).

GenCC classification: Strong.

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

2 papers have ever been indexed under this name. For scale, breast cancer has over 700,000. Median papers in the last 10 years for a rare disease in this dataset (publications denominator n=5449) is 41.

2 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).

2 in the last 10 years · high confidence · 12.1th percentile (publications denominator)

Phrase hits: 2 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

19

Distinct author names in 2 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
    Samara AA2 papers · 2024

    Department of Embryology, University of Thessaly, Larissa, GRC.

    Papers in Europe PMC
  2. 02
    Anastasakis E1 paper · 2024

    Department of Embryology, University of Thessaly, Larissa, GRC.

    Papers in Europe PMC
  3. 03
    Cao Y1 paper · 2024

    Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong, China.

    Papers in Europe PMC
  4. 04
    Choy KW1 paper · 2024

    Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong, China.

    Papers in Europe PMC
  5. 05
    Dong Z1 paper · 2024

    Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong, China.

    Papers in Europe PMC
  6. 06
    Gao Z1 paper · 2024

    Genetics and Prenatal Diagnosis Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.

    Papers in Europe PMC
  7. 07
    Hua C1 paper · 2024

    Genetics and Prenatal Diagnosis Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.

    Papers in Europe PMC
  8. 08
    Jiang J1 paper · 2024

    Department of Obstetrics and Gynecology, The First Affiliated Hospital of Xiamen University, Xiamen, China.

    Papers in Europe PMC
  9. 09
    Kong X1 paper · 2024

    Genetics and Prenatal Diagnosis Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.

    Papers in Europe PMC
  10. 10
    Liu M1 paper · 2024

    Prenatal Diagnosis Center, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China.

    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).

high 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

1 observational study matches 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.

None of the matched observational studies is currently listed as 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.

"X-linked complicated corpus callosum dysgenesis" OR "corpus callosum, partial agenesis of, X-linked recessive"

Run this search on Europe PMC

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

"X-linked complicated corpus callosum dysgenesis" OR "corpus callosum, partial agenesis of, X-linked recessive" OR "L1CAM"

Recall-expansion terms: L1CAM

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 · 1 observational · 0 expanded access. Only interventional studies enter the trial headline.

Query health: ok — strategies attempted: phrase, recall-expansion; with hits: phrase, recall-expansion

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 2026-07-26T17:34:14.592Z