RARE DISEASERESEARCH ATLAS
Open navigation menu

ORPHA:101007

Autosomal recessive spastic paraplegia type 27

high confidenceDisorder

Also known as: SPG27

Query health: suspect — Only one of 2 strategies returned hits (phrase).

Publications

30

29.2th percentile

Trials

0

Interventional, condition-specific

Researchers

242

Distinct authors in sample

Gene link

—

Readiness

2/6

Stages with a signal

Clinical definition (Orphanet)

spastic paraplegia type 27 is a rare, pure or complex spastic paraplegia characterized by a variable onset of slowly lower limb spasticity, hyperreflexia and extensor plantar responses, that may be associated with sensorimotor polyneuropathy, decreased vibration sense, lower limb distal muscle wasting, dysarthria and mild to moderate .

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 (2)

autosomal recessive spastic paraplegia type 27 · hereditary spastic paraplegia type 27

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

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

    30 matched papers (11 in last 10 years) Source

  3. Phenotype characterisedPresent

    16 HPO annotations (e.g. Spastic paraplegia; Lower limb hyperreflexia; Babinski sign) 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?

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

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

Phenotypes (Monarch / HPO)

16

Associated phenotypes · MONDO:0012181

  • Spastic paraplegia
  • Lower limb hyperreflexia
  • Babinski sign
  • Spastic/hyperactive bladder
  • Impaired vibration sensation at ankles

Showing 5 of 16 — 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?

30

30 papers have ever been published on this condition (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=3967) is 59.

30 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).

11 in the last 10 years · high confidence · 29.2th percentile (publications denominator)

Phrase hits: 30 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

242

Distinct author names in 30 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
    Stevanin G7 papers · 2021

    Centre de Recherche de l'Institut du Cerveau et de la Moelle épinière, INSERM U1127, CNRS UMR7225; UPMC Univ Paris VI UMR_S975, 75013 Paris, France.

    Papers in Europe PMC
  2. 02
    Brice A4 papers · 2014

    Centre de Recherche de l'Institut du Cerveau et de la Moelle épinière, INSERM U1127, CNRS UMR7225; UPMC Univ Paris VI UMR_S975, 75013 Paris, France.

    Papers in Europe PMC
  3. 03
    Durr A4 papers · 2014

    Centre de Recherche de l'Institut du Cerveau et de la Moelle épinière, INSERM U1127, CNRS UMR7225; UPMC Univ Paris VI UMR_S975, 75013 Paris, France.

    Papers in Europe PMC
  4. 04
    Rouleau GA3 papers · 2014

    Montreal Neurological Institute and Hospital, Department of Neurology and Neurosurgery, McGill University, Montreal, QC H3A 2B4, Canada.

    Papers in Europe PMC
  5. 05
    Bouslam N2 papers · 2014

    Université Mohammed V Souissi, Equipe de Recherchéde Maladies Neurodégéneratives (ERMN) and Centre de Recherche en Épidémiologie Clinique et Essais Thérapeutiques (CRECET), 6402 Rabat, Morocco.

    Papers in Europe PMC
  6. 06
    El-Hachimi KH2 papers · 2014

    Université Pierre and Marie Curie - Paris VI, Unité Mixte de Recherche S975, Centre de Recherche de l'Institut du Cerveau et de la Moelle épinière, Groupe Hospitalier Pitié-Salpêtrière, 75013 Paris, France; Institut National de la Santé et de la Recherche Médicale, Unité 975, 75013 Paris, France; Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7225, 75013 Paris, France; Laboratoire de Neurogénétique, Ecole Pratique des Hautes Etudes, Institut du Cerveau et de la Moelle épinière, Groupe Hospitalier Pitié-Salpêtrière, 75013 Paris, France.

    Papers in Europe PMC
  7. 07
    Gaussen M2 papers · 2014

    Université Pierre and Marie Curie - Paris VI, Unité Mixte de Recherche S975, Centre de Recherche de l'Institut du Cerveau et de la Moelle épinière, Groupe Hospitalier Pitié-Salpêtrière, 75013 Paris, France; Institut National de la Santé et de la Recherche Médicale, Unité 975, 75013 Paris, France; Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7225, 75013 Paris, France; Laboratoire de Neurogénétique, Ecole Pratique des Hautes Etudes, Institut du Cerveau et de la Moelle épinière, Groupe Hospitalier Pitié-Salpêtrière, 75013 Paris, France.

    Papers in Europe PMC
  8. 08
    Grewal SI2 papers · 1998

    Gene Regulation and Chromosome Biology Laboratory, National Cancer Institute-Frederick Cancer Research and Development Center, Maryland 21702-1201, USA.

    Papers in Europe PMC
  9. 09
    Klar AJ2 papers · 1998
    Papers in Europe PMC
  10. 10
    Mundwiller E2 papers · 2014

    Institut du Cerveau et de la Moelle épinière, Groupe Hospitalier Pitié-Salpêtrière, 75013 Paris, France.

    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 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 Autosomal recessive spastic paraplegia type 27 — 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.

"Autosomal recessive spastic paraplegia type 27" OR "SPG27" OR "hereditary spastic paraplegia type 27"

Run this search on Europe PMC

MeSH descriptor terms unioned into the query: Spastic Paraplegia 27, Autosomal Recessive

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

"Autosomal recessive spastic paraplegia type 27" OR "SPG27" OR "hereditary spastic paraplegia type 27" OR "Spastic Paraplegia 27, Autosomal Recessive"

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

Query health: suspect — strategies attempted: phrase, mesh; 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 2026-07-27T07:12:00.248Z