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Brachydactyly-syndactyly, Zhao type is a recently described syndrome associating a brachydactyly type A4 (short middle phalanges of the 2nd and 5th fingers and absence of middle phalanges of the 2nd to 5th toes) and a syndactyly of the 2nd and 3rd toes. Metacarpals and metatarsals anomalies are common.
Features include: Camptodactyly, Oligodactyly, Brachydactyly, and Short digit and 3 more.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Arms and legs | 3 | Short digit, Finger syndactyly, Short phalanx of finger |
HOXD13 encodes homeobox D13 (343 aa). Sequence-specific transcription factor that binds gene promoters and activates their transcription. Highest expression in Colon Sigmoid (34.0 TPM) and Vagina (31.9 TPM).
Brachydactyly-syndactyly syndrome is associated with mutations in the HOXD13 gene on chromosome 2.
HOXD13 is classified as a druggable target (Clinically Actionable and Transcription Factor categories) with score 26.1.
Genetic testing for HOXD13 is available. Testing is considered confirmatory for diagnosis.
Biomarker and diagnostic research for brachydactyly-syndactyly syndrome has been reported in the published literature.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for brachydactyly-syndactyly syndrome.
166 publications have been identified in PubMed for brachydactyly-syndactyly syndrome. Research spans Review / Meta-Analysis (55%), Basic Science / Preclinical (20%), and Case Report / Case Series (8%).
Research Type | Count | % of Total |
|---|---|---|
Research summaries | 91 | 55% |
Data assembled from 6 of 12 sources · Last updated Sep 19, 2026, 1:12 PM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center
Laboratory research
34 |
20% |
Patient case studies | 14 | 8% |
Disease patterns and progression | 14 | 8% |
Testing and diagnosis research | 6 | 4% |
Clinical study results | 5 | 3% |
Other research | 1 | 1% |
New treatment approaches | 1 | 1% |
Lee S (2026). [PMID: 41206258](https://pubmed.ncbi.nlm.nih.gov/41206258/). *Am J Geriatr Psychiatry*. [Review / Meta-Analysis]
Amado C (2026). [PMID: 40975490](https://pubmed.ncbi.nlm.nih.gov/40975490/). *Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology*. [Clinical Trial Publication]
Sebode M (2026). [PMID: 41432137](https://pubmed.ncbi.nlm.nih.gov/41432137/). *Current opinion in gastroenterology*. [Review / Meta-Analysis]
Ferri C (2026). [PMID: 41798958](https://pubmed.ncbi.nlm.nih.gov/41798958/). *Front Immunol*. [Review / Meta-Analysis]
Wu D (2026). [PMID: 41072814](https://pubmed.ncbi.nlm.nih.gov/41072814/). *Survey of ophthalmology*. [Basic Science / Preclinical]
Buel KL (2026). [PMID: 41569909](https://pubmed.ncbi.nlm.nih.gov/41569909/). *FP Essent*. [Review / Meta-Analysis]
Anderson EN (2026). [PMID: 41468891](https://pubmed.ncbi.nlm.nih.gov/41468891/). *Am J Hum Genet*. [Basic Science / Preclinical]
Mokhtari A (2026). [PMID: 40842263](https://pubmed.ncbi.nlm.nih.gov/40842263/). *Clinical genetics*. [Diagnostic / Biomarker]
Elsherbini A (2026). [PMID: 41689580](https://pubmed.ncbi.nlm.nih.gov/41689580/). *J Hand Surg Am*. [Review / Meta-Analysis]
Papazachariou A (2026). [PMID: 41128447](https://pubmed.ncbi.nlm.nih.gov/41128447/). *Curr Opin Clin Nutr Metab Care*. [Review / Meta-Analysis]