ORPHA:391392
Familial episodic pain syndrome with predominantly lower limb involvement
Publications
1,128
Trials
0
Interventional, condition-specific
Researchers
4
Distinct authors in sample
Gene link
SCN11A
Definitive
Readiness
4/6
Stages with a signal
Clinical definition (Orphanet)
A subtype of familial episodic pain syndrome characterized by intense, episodic and/or cyclic pain mainly localized in the distal lower limbs (occasionally affecting upper limbs as well) which is triggered/exacerbated by fatigue, cold exposure and/or weather changes and alleviated with anti-inflammatory medication, that has a tendancy to diminish in frequency with age. Episodes usually occur late in the day, last 15-30 min and associate sweating and a cold sensation of affected area.
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.
Cross-references
Joined from Mondo / Orphanet. MeSH labels may enter searches; UMLS / OMIM / NCIT are stored for reference.
- MONDO:0014247
- OMIM:615552
- UMLS:C3809899
- NCIT:C125390
Additional Mondo synonyms (1)
episodic pain syndrome, familial, type 3
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.”
4/6 stages with a signal
No matched interventional trial, but a gene association and an animal model are on record — often described as translation-ready / stalled at the clinical step.
- Gene identifiedPresent
Definitive — SCN11A
- LiteraturePresent
1,128 matched papers (791 in last 10 years) Source
- Phenotype characterisedPresent
2 HPO annotations (e.g. Abnormal autonomic nervous system physiology; Pain) Source
- Animal modelPresent
1 genotype model (Mus musculus) Source
- Orphan designationNot found
No FDA or EMA orphan-drug designation matched this disease via UMLS or preferred name Source
- 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 (SCN11A).
GenCC classification: Definitive.
Phenotypes (Monarch / HPO)
2
Associated phenotypes · MONDO:0014247
- Abnormal autonomic nervous system physiology
- Pain
Animal models (Monarch / Alliance)
1
Model associations linked to this Mondo ID
- Scn11aem1Akoi/Scn11a+ [background:] involves: C57BL/6·MGI:6392909·Mus musculus
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?
1,128
1,128 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.
1,128 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).
791 in the last 10 years · low confidence
Phrase hits: 1 · MeSH hits: 0
Who's working on it?
4
Distinct author names in 1 sampled paper — 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.
- 01Kostareva AA1 paper · 2025
Almazov National Medical Research Centre, 197341 St. Petersburg, Russia.
Papers in Europe PMC - 02Kulichik OE1 paper · 2025
Almazov National Medical Research Centre, 197341 St. Petersburg, Russia.
Papers in Europe PMC - 03Zaytseva AK1 paper · 2025
Almazov National Medical Research Centre, 197341 St. Petersburg, Russia.
Papers in Europe PMC - 04Zhorov BS1 paper · 2025
Almazov National Medical Research Centre, 197341 St. Petersburg, Russia.
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.
Broader category familial episodic pain syndrome also has no matched interventional trial. See who's working on it — people publishing on this disease are often the practical next contact when no trial is listed.
Broader category: familial episodic pain syndrome
0
Interventional trials for the parent category, exclusive of NCT IDs already counted above. Eligibility for this subtype is not guaranteed.
Parent-category matching found a broader label but no interventional trials under it. How we count trials.
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 60 · after dedupe 59 · already on CT.gov 0 · kept 0 · parent 0 · uncertain 59 · 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).
Uncertain / not reviewed (59)
- ctis·2025-523662-24-00·Authorised·Phase 3 Single-Arm Open-Label Study to Evaluate the Efficacy and Safety of Zodasiran in Adolescent Subjects (age 12 to <18 years) with Homozygous Familial Hypercholesterolemia (SPRUCE)
skipped — LLM skipped (--skip-llm)
- ctis·2026-525282-50-00·Authorised·A Phase 1b-2, Multicenter, Trial to Evaluate the Efficacy, Safety, Pharmacokinetics, and Pharmacodynamics of REC-4881 in Patients with Familial Adenomatous Polyposis (FAP)
skipped — LLM skipped (--skip-llm)
- ctis·2024-514190-21-00·Authorised, ongoing·Long-term Follow-up (LTFU) Study of Participants in any iECURE Protocol Using an Investigational Product
skipped — LLM skipped (--skip-llm)
- ctis·2025-522964-33-00·Authorised·A Phase 4, Multicenter, Double-blind, Study to Investigate the Efficacy, Safety, and Tolerability of 3 Active Doses of Respreeza® / Zemaira® Weekly Intravenous Infusions Administered over 3 Years as Longterm Maintenance Therapy in Adult Subjects with Emphysema Related to Alpha1 Antitrypsin Deficiency
skipped — LLM skipped (--skip-llm)
- ctis·2025-521589-83-00·Authorised·Reassessment of statin-associated musscle symptoms in adults with familial hypercholesterolemia: A phase IV randomized double-blinded n-of-1 crossover trial including periods with atorvastatin, placebo and no study treatment
skipped — LLM skipped (--skip-llm)
- ctis·2025-524214-28-00·Authorised, recruiting·Randomized, Placebo-Controlled, Double-Blind, Phase 3b Study to Evaluate the Efficacy and Safety of Lerodalcibep in Children and Adolescents, 6 to 17 Years of Age, with Heterozygous Familial Hypercholesterolemia on Stable Diet and Oral Lipid-Lowering Therapy (LIBerate-Kids)
skipped — LLM skipped (--skip-llm)
- ctis·2025-524265-24-00·Authorised, ongoing·A Double-Blind, Randomized, Comparative Study of Obicetrapib and Bempedoic Acid on top of Maximally Tolerated Lipid-Lowering Therapy in Patients With Dyslipidemia at High to Very High Cardiovascular Risk (MEDICI Study)
skipped — LLM skipped (--skip-llm)
- ctis·2025-521154-42-00·Authorised, recruiting·Phase 2a, Multicenter, Randomized, Double-blind, Placebo-controlled Study to Assess the Safety of Anumigilimab (CSL324) in Adults with Sickle Cell Disease
skipped — LLM skipped (--skip-llm)
- ctis·2025-521628-31-00·Authorised·A Phase 3 Randomized, Double-Blind, Placebo-Controlled, Multicenter Study to Evaluate the Efficacy and Safety of Subcutaneous Nomlabofusp in Subjects with Friedreich’s Ataxia
skipped — LLM skipped (--skip-llm)
- ctis·2023-507010-27-00·Authorised·CUSHMAH - Benefit of steroidogenesis inhibitors in Mild Cushing syndrome (Mild Autonomous Cortisol Secretion): a randomized trial in patients with Primary Bilateral Macronodular Adrenocortical Hyperplasia
skipped — LLM skipped (--skip-llm)
- ctis·2025-524679-22-00·Authorised, ongoing·Up-titration of sulfonylurea (SU) in individuals with HNF1A- and HNF4A-MODY – A Steno MODERN-MODY project (MM-SUUP)
skipped — LLM skipped (--skip-llm)
- ctis·2025-524343-13-00·Authorised·Pilot study of the efficacy of nicotinamide (vitamin B3) in Leber's hereditary optic neuropathy - NICOLHON
skipped — LLM skipped (--skip-llm)
- ctis·2025-522383-33-00·Authorised, ongoing·A double blind, randomized, placebo-controlled exploratory trial to investigate the efficacy and safety of nerandomilast over 24 months when administered in individuals with interstitial lung abnormalities and a family history of pulmonary fibrosis to reduce the risk of worsening (DROP-FPF)
skipped — LLM skipped (--skip-llm)
- ctis·2025-522553-19-00·Authorised, recruiting·A Phase 2b/3, Adaptive, Randomized, Double-blind, Placebo-controlled, Multicenter Study to Assess the Efficacy and Safety of Danicamtiv in Participants with Symptomatic Genetic and Familial Dilated Cardiomyopathy (KINSHIP-DCM).
skipped — LLM skipped (--skip-llm)
- ctis·2024-519068-42-00·Authorised, recruiting·An Operationally Seamless Phase 2/3 Study to Evaluate the Safety, Efficacy, and Pharmacokinetics of Enlicitide Decanoate in Pediatric Participants with Heterozygous Familial Hypercholesterolemia
skipped — LLM skipped (--skip-llm)
- ctis·2025-521792-31-01·Authorised, recruiting·Phase 3 Study to Evaluate the Efficacy and Safety of Zodasiran in Adolescent and Adult Subjects with Homozygous Familial Hypercholesterolemia (YOSEMITE)
skipped — LLM skipped (--skip-llm)
- ctis·2025-521013-10-00·Authorised, ongoing·A RANDOMIZED, DOUBLE-BLIND, PLACEBO-CONTROLLED, PARALLEL-GROUP, MULTICENTER, PHASE 2B TRIAL TO ASSESS THE EFFICACY, SAFETY, AND TOLERABILITY OF AEF0217 FOR 24 WEEKS IN ADULTS AND OLDER ADOLESCENTS WITH DOWN SYNDROME
skipped — LLM skipped (--skip-llm)
- ctis·2025-520846-31-00·Authorised·Cannabidiol (Epidyolex) for behavioural problems in patients with Tuberous Sclerosis Complex, Sanfilippo and Fragile X syndrome: an N-of-1 series
skipped — LLM skipped (--skip-llm)
- ctis·2025-522946-37-00·Authorised, ongoing·A Phase 3, Multi-Site, Prospective, Randomized, Double-Blind, Placebo-Controlled Trial of eRapa to Improve Clinical Outcomes in Participants with Familial Adenomatous Polyposis
skipped — LLM skipped (--skip-llm)
- ctis·2024-519674-40-00·Authorised, recruiting·A Phase 1/2, Open-Label, Dose Finding Study to Investigate the Safety, Tolerability, and
Efficacy of ALXN2350 Gene Therapy in Adult Participants with Symptomatic BAG3
Mutation-Associated Dilated Cardiomyopathy
skipped — LLM skipped (--skip-llm)
- ctis·2024-516652-18-00·Authorised, ongoing·A Phase 3 Randomized, Double-blind, Placebo-controlled Study to Evaluate the Impactof Maridebart Cafraglutide on Cardiovascular Outcomes in Participants with Atherosclerotic Cardiovascular Disease and Overweight or Obesity (MARITIME-CV)
skipped — LLM skipped (--skip-llm)
- ctis·2025-520520-17-00·Expired·A Phase III, Randomised, Double-Blind, Placebo-Controlled, Parallel Group Study to Assess the Effect of AZD0780 on Low Density Lipoprotein Cholesterol in Patients With Heterozygous Familial Hypercholesterolaemia
skipped — LLM skipped (--skip-llm)
- ctis·2024-520413-53-00·Authorised, ongoing·A randomized, parallel-arm, double blind, placebo-controlled study to assess the efficacy of fampridine for patients with spinocerebellar ataxia SCA27B caused by a GAA expansion in the FGF14 gene.(TREAT-FGF14)
skipped — LLM skipped (--skip-llm)
- ctis·2024-511985-34-00·Authorised, recruiting·Clairance de la morPHinE et filtration glomérulaire chez le Drepanocytaire en crise en REAnimation_PHEDREA
skipped — LLM skipped (--skip-llm)
- ctis·2025-521906-16-00·Expired·Evaluation of the efficacy and safety of drug treatment in familial polycythemia associated with an EPO gene mutation: a multicentre, open-label, phase I trial
skipped — LLM skipped (--skip-llm)
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 Familial episodic pain syndrome with predominantly lower limb involvement — check Associations / patient organisations on that page.
India — NPRD
Last verified 2026-07-26This 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.
("Familial episodic pain syndrome with predominantly lower limb involvement" OR "episodic pain syndrome, familial, type 3") OR ("SCN11A" OR "SCN11A syndrome" OR "SCN11A-related")ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):
"Familial episodic pain syndrome with predominantly lower limb involvement" OR "episodic pain syndrome, familial, type 3"
Study-type breakdown: 0 interventional · 0 observational · 0 expanded access. Only interventional studies enter the trial headline.
Parent-category trials query:
"familial episodic pain syndrome"
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 (1128) is implausibly high for prevalence class "<1 / 1 000 000" — treat as possible over-matching, not a measure of research intensity
Ingested 2026-07-27T15:04:10.356Z