ORPHA:85112
Palmoplantar keratoderma-XX sex reversal-predisposition to squamous cell carcinoma syndrome
Also known as: Palmoplantar hyperkeratosis-XX sex reversal-predisposition to squamous cell carcinoma syndrome
Query health: suspect — Only one of 3 strategies returned hits (phrase).
Publications
7
21.7th percentile
Trials
0
Interventional, condition-specific
Researchers
56
Distinct authors in sample
Gene link
RSPO1
Strong
Readiness
2/6
Stages with a signal
Clinical definition (Orphanet)
Palmoplantar keratoderma-XX sex reversal-predisposition to squamous cell carcinoma syndrome is characterised by sex reversal in males with a 46, XX (SRY-negative) karyotype, palmoplantar hyperkeratosis and a predisposition to squamous cell carcinoma. To date, five cases (four of whom were brothers) have been described. The aetiology is unknown.
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:0012530
- MeSH:C567165
- OMIM:610644
- UMLS:C3149931
Additional Mondo synonyms (2)
palmoplantar hyperkeratosis with squamous cell carcinoma of skin and sex reversal · palmoplantar hyperkeratosis-XX sex reversal-predisposition to squamous cell carcinoma syndrome
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
No matched interventional trial; the gene is known and literature exists — preclinical or natural-history work may still be the practical next step.
- Gene identifiedPresent
Strong — RSPO1
- LiteraturePresent
7 matched papers (6 in last 10 years) Source
- Phenotype characterisedNot checked
Not yet enriched from Monarch / HPO
- Animal modelNot checked
Not yet enriched from Monarch / Alliance
- Orphan designationNot checked
FDA/EMA orphan-drug designation not enriched yet
- 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 (RSPO1).
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?
7
7 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.
7 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).
6 in the last 10 years · high confidence · 21.7th percentile (publications denominator)
Phrase hits: 7 · MeSH hits: 0
Who's working on it?
56
Distinct author names in 7 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.
- 01
- 02Wang L2 papers · 2023
BGI-Wuhan Clinical Laboratory, BGI-Shenzhen, 430074, Wuhan, China.
Papers in Europe PMC - 03Aggarwal S1 paper · 2018
Department of Medical Genetics, Nizam's Institute of Medical Genetics, Hyderabad, Telangana, India.
Papers in Europe PMC - 04Aston KI1 paper · 2021
Andrology and IVF Laboratory, Division of Urology, Department of Surgery, University of Utah School of Medicine, Salt Lake City, UT, USA.
Papers in Europe PMC - 05Chen F1 paper · 2022
Central Laboratory, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, PR China.
Papers in Europe PMC - 06Conrad DF1 paper · 2021
Division of Genetics, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR, USA.
Papers in Europe PMC - 07Dalal A1 paper · 2018
Diagnostics Division, Centre for DNA Fingerprinting and Diagnostics, Hyderabad, Telangana, India.
Papers in Europe PMC - 08Du L1 paper · 2023
BGI-Wuhan Clinical Laboratory, BGI-Shenzhen, 430074, Wuhan, China.
Papers in Europe PMC - 09Fan Y1 paper · 2017
Department of Pediatric Endocrinology/Genetics, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Institute for Pediatric Research, Shanghai, 200092, China.
Papers in Europe PMC - 10Feng Y1 paper · 2022
Central Laboratory, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, PR China.
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 27 July 2026
No matched interventional trials. This is true for 73% of diseases in the trials denominator (5114 of 7003). Here are the researchers publishing on it.
high confidence · 36.5th 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.
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 2026-07-26This 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.
"Palmoplantar keratoderma-XX sex reversal-predisposition to squamous cell carcinoma syndrome" OR "Palmoplantar hyperkeratosis-XX sex reversal-predisposition to squamous cell carcinoma syndrome" OR "palmoplantar hyperkeratosis with squamous cell carcinoma of skin and sex reversal" OR "palmoplantar hyperkeratosis with squamous cell carcinoma of the skin and sex reversal"
MeSH descriptor terms unioned into the query: Palmoplantar Hyperkeratosis And True Hermaphroditism
ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):
"Palmoplantar keratoderma-XX sex reversal-predisposition to squamous cell carcinoma syndrome" OR "Palmoplantar hyperkeratosis-XX sex reversal-predisposition to squamous cell carcinoma syndrome" OR "palmoplantar hyperkeratosis with squamous cell carcinoma of skin and sex reversal" OR "palmoplantar hyperkeratosis with squamous cell carcinoma of the skin and sex reversal" OR "Palmoplantar Hyperkeratosis And True Hermaphroditism" OR "RSPO1" OR "diffuse palmoplantar keratoderma" OR "hereditary palmoplantar keratoderma"
Recall-expansion terms: RSPO1, diffuse palmoplantar keratoderma, hereditary palmoplantar keratoderma
Study-type breakdown: 0 interventional · 0 observational · 0 expanded access. Only interventional studies enter the trial headline.
Query health: suspect — strategies attempted: phrase, mesh, recall-expansion; 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 2026-07-27T02:44:40.166Z